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Model year

2025 Mercedes-Benz GLC 300

SUV, gasoline, AWD/All-Wheel Drive, built in Germany. Owner complaints on file from Jan 14, 2025 to Aug 22, 2026.

Recall campaigns covering this model year3241k vehicles or units across those campaigns
Owner complaints16Close to the median 2025 suv
Severity index25.02025 suvs average 8.9
First 24 months16Complaints in its first two years
Complaints over time

Complaints about the 2025 Mercedes-Benz GLC 300 peaked in 2025, with 10 filed

Owner complaints about this model year, by the year they were filed with NHTSA.

02.557.5102025102026
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

75% of complaints about the 2025 Mercedes-Benz GLC 300 name electrical system

Owner complaints by component. Hover or focus a bar for the crash, fire, injury or death count.

Electrical system
12
Engine and cooling
3
Driver assistance
3
Seats
2
Brakes
2
Speed control
2
Lighting
1
Fuel system
1
Steering
1
Structure
1
Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

3 recall campaigns cover the 2025 Mercedes-Benz GLC 300

Check a specific vehicle by VIN on NHTSA's site: a campaign may cover only part of a model year's production.

Recall campaigns for the 2025 Mercedes-Benz GLC 300
CampaignFiledSubjectComponentVehiclesRemedy
26V-281May 1, 2026Infotainment control unit may reset while the vehicle is in motion and cause the instrument panel display to go blankElectrical system144,049Software update
25V-533Aug 20, 2025Steering coupling bolt may have been improperly tightened, allowing the steering coupling to loosen from the steering rackSteering3,749Repair or modification
25V-379Jun 6, 2025In certain crash scenarios, where the rear occupant's head contacts the C-pillar, the pillar may not absorb an adequate amount of the impactStructure92,851Repair or modification
Source: NHTSA ODI recalls file.
Owner complaints

What owners reported about the 2025 Mercedes-Benz GLC 300

The full text of every complaint filed with NHTSA about this model year, newest first. Complaints are filed by owners and are not verified by NHTSA; NHTSA removes personal details before publishing.

16 complaints on file, page 1 of 1.

  1. Filed Aug 22, 2026Failure Aug 3, 2026Wilmington, NCElectrical system

    Information screens; speed, gear etc. and middle screen, radio, gps, etc, go blank. Screens are black with no information. There’s also a popping sound happening in the background over the speakers. You can start the car and put it in gear and drive - but with no information in either computer screens. Safety issue for sure! After waiting approximately 3 hours, the 2 screens come on when car is started.

    NHTSA complaint 11758716
  2. Filed Aug 1, 2026Failure Dec 9, 2025Providence Forge, VAExterior lighting, Unknown or other, Vehicle speed control

    The screen goes blank not only in the middle where the maps, air conditioning and radio is but the screen where the speed gas tank are as well. We have taken the car in at least 5 times stayed the issue and were told there’s no recall yet for the car. I see here that there is. The car was a Richmond Mercedes today the screen went down amd I was told there’s no fix but maybe I could look on the internet. So here I am!

    NHTSA complaint 11754184
  3. Filed Jul 21, 2026Failure Jul 21, 2026Los Angeles, CAElectrical system

    My vehicle's infotainment system both center console and dashbboard went completely black 2 weeks after I purchased the car in August of 2025. The vehicle was in the shop for a week and a half, and they finally fixed the issue. The vehicle at the time was bought used with about 2,200 miles on it at time of purchase. Now in July of 2026, exactly one year from the day i bought the car, with only 9,500 miles on it, we are having the same issue again with both the dashboard and center console going completely dark, not allowing us to see any critical information such as MPH, gas fuel, tire pressure, etc. Other than that the car seems to drive just fine. I noticed there was a mass recall of 144,000 cars because of this same issue with Mercedes Benz. The GLC-class was in fact listed on this list of eligible recall vehicles. However my VIN # was not eligible for some reason, even though it is the exact issue that the recalls were happening on, and fits within the recall class type and year of manufacture (2024-2026). I am simply requesting to be put on this recall list because it seems like this issue will continue to persist and we do not want to be turning this in every year and also risk our lives driving a car that does not give us very critical information in order to drive safely.

    NHTSA complaint 11751934
  4. Filed Jun 4, 2026Failure May 26, 202617,107 milesChicago, ILElectrical system, Engine, Vehicle speed controlCrash

    The contact owns a 2025 Mercedes-Benz GLC 300. The contact stated that while her husband was driving at 5 to 10 MPH attempting to park the vehilce lunged forward traveling 20 feet and crashed into the house. The air bags deployed. No warning lights were illuminated , There was no injuries or fire. A police report was filed. The gas company was on the scene due to a gas leak. Additionally the vehilce was serviced for electrical issues. While reversing in the snow the vehilce lunged 20 feet and crashed into a unknown vehicle causing a scratch. The local dealer was contacted where the EDR was requested. The vehicle was not diagnosed or repaired. The vehilce was towed to a towing lot. The manufacturer was not contacted The failure mileage was approximately 17,107. The vehicle was deemed a total lost.

    NHTSA complaint 11741988
  5. Filed May 12, 2026Failure May 6, 2026Midland, TXElectrical system, Hatchback/liftgate1 injured

    In multiple incidents, the tailgate has begun to close while I am loading or unloading items from the trunk, hitting me in the head. My natural reaction is to lift up, causing injury to my neck. The dealer unsuccessfully "fixed" the problem. Additionally, and unrelated to the closing problem, on multiple occasions, upon pushing the close button on the tailgate when it was in an open position, the tailgate reaches the floor of the trunk, then without locking, opens about one (1) foot. The dealer "could not duplicate" the problem. I have to manually close the tailgate. You ask when did this happen, the latest incident is the date reported below, but the two issues/problems have reoccurred time and time again since we bought the vehicle new.

    NHTSA complaint 11737239
  6. Filed Mar 23, 2026Failure Mar 18, 20264,700 milesWillis, TXElectrical system

    The contact leased a 2025 Mercedes-Benz GLC300. The contact stated that while driving at 45 MPH, the instrument panel and the infotainment system screen turned black, and the vehicle made abnormal electrical snapping sounds. The vehicle was taken to the dealer, where two software resets were performed days apart; however, the failure persisted. The dealer informed the contact that upon performing a third software reset and replacing the circuit breaker fuse, the vehicle would be repaired. The dealer and the manufacturer were contacted and informed the contact that it was a common failure. The failure mileage was approximately 4,700.

    NHTSA complaint 11726336
  7. Filed Oct 21, 2025Failure Oct 21, 2025Texarkana, ARElectrical system

    The infotainment and instrument panel screens blacked out after the vehicle was started a few miles away from our home. I was unable to see the speedometer while driving back home. This was the first time that this has happened to us. After a Google search of Mercedes Benz 2025 GLC 300, this event appears to be fairly common.

    NHTSA complaint 11694886
  8. Filed Oct 10, 2025Failure Oct 8, 2025Ridgewood, NJElectrical system, Seats, Service brakesCrash

    When I entered my vehicle after it was washed at the Mercedes-Benz service location, I pressed Memory 1 button and the seat returned to my normal position. Without any further input, I started the engine, and the driver's seat automatically moved backward by itself. When I readjusted the seat and shifted into Drive, it continued moving rearward. As the seat moved backward, my feet could no longer reach the brake pedal. At the same time, the car began to move forward, and I lost control of the vehicle, resulting in a collision that damaged the right side doors. This malfunction occurred suddenly and without any warning lights or messages. The seat moved by itself twice-once when the engine started and again when I shifted into Drive. The issue appears to be related to the seat's electrical control system or memory setting malfunction. The dealership has inspected the vehicle but was unable to determine the cause of the problem. I am deeply concerned that this may happen again and could cause a serious injury or major traffic accident. The vehicle has approximately 2200 miles and was purchased new in March 2025. I am requesting a formal investigation to determine the cause of this automatic seat movement and whether other vehicles of the same model are affected.

    NHTSA complaint 11692559
  9. Filed Sep 6, 2025Failure Sep 6, 2025Danbury, CTUnknown or other

    The entire main console display AND the digital instrument cluster screen have completely frozen. Additionally, the gas gauge for how much fuel is in the vehicle is nowhere to be found. Temperature touch controls (no physical option), volume, car settings (which can adjust safety features, multimedia features, accessibility features), etc. are all completely unavailable and unable to use. For example, if the defrost option was on which defaults to full blast heat, I would’ve unable to turn it off. The only information that is properly updating is MPH, headlamp status, time, Emerfency brake, Gear, and outside temperature. RPMs cannot be seen. Some of the pictures attached show that I’ve been on a phone call for 3.5 hours. I’m not.

    NHTSA complaint 11685518
  10. Filed Sep 4, 2025Failure Aug 29, 2025Branchburg, NJAutomatic emergency braking, Warnings, Service brakesCrash

    The brakes did not function at all. Upon trying to brake, the brake pedal was hard and the car would not stop. The car went into s storefront where the cashier is located and could have resulted in serious injury or death to anyone waiting to pay at the store. The forward collision alarm did not sound, the dashboard indicator for an impending forward collision did not illuminated. The car did not slow down or stop to avoid the collision. The car is currently at the body shop.

    NHTSA complaint 11684967
  11. Filed Aug 28, 2025Failure Jun 11, 20252,000 milesHillsdale, NJElectrical system, Dynamic brake support/brake assist

    The contact owns a 2025 Mercedes-Benz GLC300. The contact stated that while driving approximately 30 MPH, there was an abnormal grinding sound coming from the vehicle. The contact stated that the brake assist suddenly activated and the vehicle came to an abrupt stop, causing the seat belt to immediately retract and lock. The contact was slightly jerked from the abrupt stop. The contact stated that a warning light with a red triangle with an image of a crash in the center was illuminated. The contact stated that after starting the vehicle, the infotainment center and the instrument panel were completely black. The vehicle was restarted several times before both systems started operating as needed. The failure occurred twice; however, the second time, the contact had to turn off and restart the vehicle for approximately an hour before the infotainment center and instrument panel became operational. The vehicle was taken to the dealer, who performed a software update for the infotainment center. After the software update was completed, the contact became aware there were other electrical systems that failed intermittently, including the voice activation system. The vehicle was returned to the dealer and the contact was informed that the front driver’s and passenger’s sides sensors were too low and there was no reason for the notification to become activated. The vehicle was not diagnosed or repaired. The manufacturer was informed of the failure, and a case was opened. The failure mileage was approximately 2,000.

    NHTSA complaint 11683653
  12. Filed Aug 24, 2025Failure Aug 24, 2025Fort Lauderdale, FLSeats, Steering, Unknown or other

    The driver’s seat automatically adjusted while the vehicle was in drive, causing me to lose the ability to reach the pedals and almost resulting in a collision. While driving my 2025 Mercedes-Benz GLC 300 4MATIC with my children in the car, I stopped at a stop sign when the driver’s seat suddenly began adjusting itself backward. My husband also drives this vehicle, and because I had not logged into my driver profile, the car began moving the seat and controls to his saved position, while the car was in drive. The seat moved so far back that I could not reach the pedals. I lost control of the vehicle while another car was turning into my lane. The only way I avoided an accident was by quickly putting the car into park before the seat adjustment completed. This was a terrifying and dangerous situation. Automatic seat adjustments should never be allowed while the vehicle is in motion or in drive. This design flaw puts drivers, passengers, and surrounding traffic at risk of serious injury or death

    NHTSA complaint 11682705
  13. Filed Jul 2, 2025Failure Dec 24, 2024Phila, PAElectrical system, Engine, Fuel/propulsion system

    In July 2023, I entered into a lease agreement for a 2023 Mercedes-Benz GLC 300 4MATIC SUV (VIN: [XXX]). From the outset, the vehicle suffered from recurring mechanical failures. It required service visits on August 10, 2023; March 25, 2024; July 26, 2024; September 20, 2024; and October 7, 2024. The final incident on [XXX], involved a fuel pump failure that caused the vehicle to stall in traffic, placing me in a terrifying situation where another driver, enraged and armed, threatened me while I waited for a tow truck. Mercedes-Benz acknowledged the vehicle was inoperable and issued a replacement lease on October 15, 2024 VIN [XXX]. However, this second vehicle also proved defective. Within two weeks, it was back in the shop for service. Since then, it has required repairs on December 24, December 31, 2024, and again on May 28, 2025, including another engine stall that posed a serious road safety threat. Despite my good faith efforts to resolve the matter, Mercedes-Benz, via their claims processor Sedgwick, is attempting to charge me $12,873.52 in negative equity, in addition to fees for Prepaid Maintenance and 4N1 Assurance Protection, as part of their settlement offer. These charges are both inappropriate and unlawful under the principles of lemon law and consumer protection. Request for Relief: •Immediate release from the lease agreement without penalty. •Refund of all payments made toward both defective vehicles. •Full waiver of any negative equity or ancillary product charges. •Any civil penalties deemed appropriate by your office against Mercedes-Benz USA and/or Sedgwick. I have already filed a complaint with the NHTSA (ID Number: 11665555) As I feel as though my safety is in imminent danger driving this vehicle. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

    NHTSA complaint 11670954
  14. Filed Jun 7, 2025Failure Oct 29, 2024Phila, PAElectrical system, Engine

    I am writing to formally express my deep dissatisfaction and serious concerns regarding both my 2024 and 2025 Mercedes-Benz vehicles, purchased/leased through your dealership. I am now facing an unacceptable situation that not only violates my consumer rights but has repeatedly placed my personal safety in jeopardy. After significant issues with my original 2024 vehicle, I was provided a replacement, which I took delivery of on October 15, 2024. Unfortunately, within two weeks, the replacement vehicle was already back in the shop for repairs. It has since required service again on December 24, December 31, and most recently, May 28, 2025. On one particularly alarming occasion, the vehicle shut off in the middle of the road, creating an extremely hazardous and life-threatening situation. I am driving a vehicle that cost over $60,000, yet it has proven consistently unreliable, unsafe, and unfit for normal operation. This experience has severely tarnished my perception of the Mercedes-Benz brand and has caused undue stress, inconvenience, and concern for my safety. Given the repeated repair attempts, persistent mechanical failures, and safety issues, I am requesting that Mercedes-Benz fully release me from this lease agreement without penalty or further financial obligation. Additionally, I am in the process of reviewing whether this situation meets the criteria under [Your State’s] Lemon Law, which typically applies when a vehicle undergoes multiple unsuccessful repair attempts for the same issue or is out of service for an extended period within the first 12-24 months of ownership. Based on the timeline and history of service visits, I believe my situation may qualify.

    NHTSA complaint 11665555
  15. Filed Mar 22, 2025Failure Mar 19, 2025Arcadia, CAElectrical system

    The instrument cluster panel blacked out when I started driving. Tried to turn off and on, but didn't come back on.

    NHTSA complaint 11649883
  16. Filed Jan 14, 2025Failure Nov 20, 2024Bethesda, MDAdas, Control module, Automatic emergency braking

    See attached document for complaint.

    NHTSA complaint 11635857
Source: NHTSA ODI complaints file.
Investigations

NHTSA has not opened an investigation on this model year

Source: NHTSA ODI investigations file.
Service bulletins

167 manufacturer communications cover this model year

Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall; the 60 most recent are listed.

  • LI35.31-P-080353 Sep 14, 2026 · Service Bulletin/Repair Instructions
    Complaint Whining / humming noises (described as foghorn‑like) from the drivetrain in the rear axle area during cornering. (figure 1) On the above‑mentioned vehicles with a mileage up to 15,000 km (about 9,300 mi), noises can occur from the rear axle differ…
  • LI54.71-P-079104 Sep 11, 2026 · Service Bulletin/Repair Instructions
    Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("‑ ‑"). • Flashing when current vehicle speed is under speed limit…
  • LI82.60-P-079747 Sep 4, 2026 · Service Bulletin/Repair Instructions
    Complaint The Apple Music app is no longer available in the head unit apps menu after updating the software of the (A26/17 ‑ MBUX multimedia system + instrument cluster (head unit)) to E333.8 / A236 904 19 00. Cause Head unit software (CIVIC206) Remedy NOTE…
  • LI83.90-P-080935 Sep 25, 2026 · Service Bulletin/Repair Instructions
    Complaint CEL illuminates and/or AC does not blow cold. Cause Potentially relevance to hardware and/or software Remedy Scenario 1: 1. If the AC does not blow cold air, replace compressor (if compressor's index and part number Figure 1 match against Table 1)…
  • LI83.55-P-080937 Sep 1, 2026 · Service Bulletin/Repair Instructions
    Cause Internal failure of the scroll wheel within the AC compressor. Remedy Check the compressor's index and part number Figure 1 against Table 1. If listed please perform the following: 1. Replace the compressor, drier, and expansion valve using the applic…
  • LI46.35-P-067339 Aug 28, 2026 · Service Bulletin/Repair Instructions
    Complaint During part of the steering movement, it feels heavier or more difficult to steer in the same spot every time. OR Rattling, humming, dry sliding/gravel noise from the electric steering system when steering (see attachment). Complaint does not imp…
  • LI54.71-P-079104 Aug 22, 2026 · Service Bulletin/Repair Instructions
    Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("‑ ‑"). • Flashing when current vehicle speed is under speed limit…
  • LI54.65-P-080529 Aug 26, 2026 · Service Bulletin/Repair Instructions
    Complaint Frequent rear view camera flap actuations and/or noise associated. NOTE: Rear view camera functions are NOT affected and still perform in accordance with regulatory requirements. Cause Calibration of the reversing camera is in progress. This is no…
  • LI72.20-P-075746 Aug 24, 2026 · Service Bulletin/Repair Instructions
    Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so…
  • LI82.85-P-079088 Aug 14, 2026 · Service Bulletin/Repair Instructions
    Complaint The following most common complaints may be observed: • Brief connectivity interruptions when using Apple CarPlay over Wi-Fi • Audio cuts out • Device not recognized • No operation possible Cause There are multiple possible causes for an iPhone di…
  • LI54.65-P-080132 Aug 12, 2026 · Service Bulletin/Repair Instructions
    Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics. Cause Various root causes Remedy See attached di…
  • LI82.62-P-078631 Aug 6, 2026 · Service Bulletin/Repair Instructions
    Complaint Clanking noise from the area of the speakers in the doors. Cause Under analysis. Remedy To narrow down the cause, first of all remove the door trim. • If the noise continues to occur even with the door trim removed, then continue the diagnosis wor…
  • LI82.60-P-080806 Aug 4, 2026 · Service Bulletin/Repair Instructions
    Complaint DAB, FM, or SDARS radio reception is limited, only a few stations are found. Cause The firmware installation was incomplete. Remedy In the A26/17 control unit "MBUX multimedia system" (head unit), use XENTRY to carry out the special process "All M…
  • LI27.00-P-080840 Aug 4, 2026 · Service Bulletin/Repair Instructions
    Complaint Mercedes-Benz USA is currently experiencing limited availability of transmission fluid specification ATF 236.17 due to a global supply constraint. 236.17 ATF 1L and 5L (PNs: A002989060312 and A002989060313) bottles are out of stock or in limited s…
  • OTA-MBUX Software Update Jul 2, 2026 · Over The Air
    Mercedes-Benz AG, the manufacturer of Mercedes-Benz vehicles, has determined that on certain subject vehicles, there is a new software update for the MBUX Infotainment System. An OTA update will further enhance functionality and stability of the MBUX Infota…
  • LI82.60-P-080806 Jul 17, 2026 · Service Bulletin/Repair Instructions
    Complaint After an "Over the Air" update (OTA), FM or SDARS radio reception is limited; only a few stations are found. Cause The firmware installation was incomplete. Remedy In the A26/17 control unit "MBUX multimedia system" (head unit), use XENTRY to carr…
  • LI54.71-P-079104 Jul 9, 2026 · Service Bulletin/Repair Instructions
    Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("- -"). • Flashing when current vehicle speed is under speed limit…
  • LI35.30-P-058566 Jul 14, 2026 · Service Bulletin/Repair Instructions
    Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The noise is heard once in each instance when changing direction of travel. Note: Sound file in attachment Cause If the complaint is eliminated by exp…
  • LI33.20-P-078406 Jul 8, 2026 · Service Bulletin/Repair Instructions
    Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comp…
  • LI33.20-P-078406 Jul 7, 2026 · Service Bulletin/Repair Instructions
    Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comp…
  • LI82.60-P-080383 Jul 8, 2026 · Service Bulletin/Repair Instructions
    Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a new station change request is triggered, a temporary glitch is causing the Head U…
  • LI00.20-P-077615 Jul 1, 2026 · Service Bulletin/Repair Instructions
    Complaint 1. "Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The…
  • LI54.30-P-080649 Jul 1, 2026 · Service Bulletin/Repair Instructions
    Complaint General information on the operation of the PRE-SAFE® Impulse system: The PRE-SAFE® Side Impulse system is a preventive, i.e. pre-collision occupant protection system. The task of the system is to provide additional protection to vehicle occupants…
  • ANN Interm. Issues Flash Jul 2, 2026 · Other
    We are experiencing intermittent issues when flashing A26/17 - MBUX multimedia system + Instrument cluster (Head unit) when using flashing method ethernet to USB-C. Until further notice, please flash via VCI only.
  • LI00.20-P-078424 Jun 12, 2026 · Service Bulletin/Repair Instructions
    Complaint The remaining time shown on the instrument cluster in the workshop menu (days to next due service) is implausible (>365 days) for the following conditions: • for the date of the vehicle handover • or the last conducted and confirmed Service A/B Ca…
  • LI00.20-P-077615 Jun 12, 2026 · Service Bulletin/Repair Instructions
    Complaint 1. "Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The…
  • LI46.80-P-080662 Jun 1, 2026 · Service Bulletin/Repair Instructions
    Complaint Rattling/knocking noise from the rear axle steering is audible when driving on rough terrain or cobblestones. Large play in the rear axle steering. Cause Diverse functional play in the rear axle steering. Remedy 1. Detach underfloor paneling under…
  • LI00.20-P-077615 May 29, 2026 · Service Bulletin/Repair Instructions
    Complaint 1. "Perform vehicle handover" in the workshop menu to start the maintenance computer for service A/B cannot be carried out. 2. Service confirmation is not possible because "Perform vehicle handover" is displayed. This cannot be carried out. 3. The…
  • LI46.15-P-070510 May 22, 2026 · Service Bulletin/Repair Instructions
    Complaint Noises from the area of the steering column. - Creaking - Squeaking - Chattering - Humming - Grinding Cause At present, there are no known noise problems with the steering column. Remedy Check surrounding area of the steering column for possible n…
  • LI54.10-P-080602 May 20, 2026 · Service Bulletin/Repair Instructions
    Complaint 48V battery (A66) part numbers A 000 982 78 24, A 000 982 57 30, A 000 982 88 31, A 000 982 50 32, A 000 982 87 32) may trigger a fault message ("48 V Service Required" with fault codes P0ADA91, P0ADE91, P0AA100, P0ADD00 or P0AA000) in the instrum…
  • LI91.10-P-076097 May 19, 2026 · Service Bulletin/Repair Instructions
    Complaint Play/noise at height adjuster or in seat guide rail on front seats Cause Tolerances and variations in the manufacturing process Remedy 1. Inspect Seat Height Adjuster Barcode Label (See Pic.1) • Locate the barcode label on the cross tube of the se…
  • LI82.30-P-059239 May 19, 2026 · Service Bulletin/Repair Instructions
    Complaint There are several types of complaint about noises or poor windshield wiper wiping performance: A: Wiper blades squeaking, chattering, shuddering B: The windshield is not wiped completely (streaking) C: During the downward movement water is pulled …
  • LI91.29-P-080554 May 15, 2026 · Service Bulletin/Repair Instructions
    Complaint One or more seat functions are restricted or inoperative. This may include: • Seat memory • Automatic seat adjustment • Easy Entry/Exit • Head restraint presetting • Collision avoidance with bench seat at rear • Actuation by other vehicle systems …
  • LI54.65-P-080132 May 12, 2026 · Service Bulletin/Repair Instructions
    Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached dia…
  • LI33.20-P-078406 May 12, 2026 · Service Bulletin/Repair Instructions
    Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comp…
  • LI46.15-P-070510 May 8, 2026 · Service Bulletin/Repair Instructions
    Cause At present, there are no known noise problems with the steering column. Remedy Check surrounding area of the steering column for possible noises. • Instrument panel support • Steering column switch module If noise only occurs when adjusting the steeri…
  • LI91.10-P-076097 May 4, 2026 · Service Bulletin/Repair Instructions
    Complaint Play/noise at height adjuster or in seat guide rail on front seats Cause Tolerances and variations in the manufacturing process Remedy 1. Inspect Seat Height Adjuster Barcode Label (See Pic.1) • Locate the barcode label on the cross tube of the se…
  • LI77.21-P-080503 Apr 30, 2026 · Service Bulletin/Repair Instructions
    Complaint The panoramic sliding sunroof operates in a stepped movement. The panoramic roof becomes denormalized without an apparent reason (not directly after control unit replacement). Automatic operation of the glass panel and roller sunblind is not possi…
  • LI54.65-P-080529 Apr 29, 2026 · Service Bulletin/Repair Instructions
    Complaint Frequent rear view camera flap actuations and/or noise associated. NOTE: Rear view camera functions are NOT affected and still perform in accordance with regulatory requirements. Cause Calibration of the reversing camera is in progress. This is no…
  • LI82.10-P-078301 Apr 16, 2026 · Service Bulletin/Repair Instructions
    Complaint Headlamp, front fog lamp leaky or fogged. Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compensation diaphragm…
  • LI00.01-P-078887 Apr 24, 2026 · Service Bulletin/Repair Instructions
    Complaint The intent of this document is to provide workshops with helpful technical reference language. • Commonly used acronyms in LI's and TIPS cases. • Control unit names, numbers, and how to identify. • Network/wiring architecture groups to baumuster q…
  • LI77.21-P-080503 Apr 24, 2026 · Service Bulletin/Repair Instructions
    Complaint The panoramic sliding sunroof operates in a stepped movement. The panoramic roof becomes denormalized without an apparent reason (not directly after control unit replacement). Automatic operation of the glass panel and roller sunblind is not possi…
  • LI33.20-P-078406 Apr 17, 2026 · Service Bulletin/Repair Instructions
    Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements and/or Creaking/crackling noises from the area of the wheel bearing on the front axle when cornering/ maneuvering. Sound file attached for comp…
  • LI83.70-P-080411 Apr 13, 2026 · Service Bulletin/Repair Instructions
    Complaint No heating output is available during electric driving operation. In conventional (combustion engine) driving operation, full heating output is available. Cause Possible defect in the N33/5 water heater (high-voltage PTC booster heater) Remedy If …
  • LI72.20-P-075746 Apr 2, 2026 · Service Bulletin/Repair Instructions
    Complaint Tailgate opens unintentionally. Cause Accidental or unnoticed activation of the button to open the tailgate on the vehicle key. EXAMPLE: when stored in trouser pocket, handbag etc. Remedy As of the 6th generation, the vehicle key can be recoded so…
  • LI54.71-P-079104 Apr 2, 2026 · Service Bulletin/Repair Instructions
    Complaint Traffic sign symbol for "Traffic Sign Assist" is blinking in instrument cluster without obvious cause usually with one of the following scenarios: • Flashing without a speed limit ("- -"). • Flashing when current vehicle speed is under speed limit…
  • LI82.60-P-080383 Apr 2, 2026 · Service Bulletin/Repair Instructions
    Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause When a new station change request is triggered, a temporary glitch is causing the Head U…
  • LI91.29-P-079178 Apr 8, 2026 · Service Bulletin/Repair Instructions
    Complaint After opening the driver's door, the seat can no longer be moved using the Memory button. Adjustment via the seat adjustment switch is still possible. Example: Driver 1 parks the vehicle in the evening and the seat position is right to the front w…
  • LI91.60-P-076303 Apr 8, 2026 · Service Bulletin/Repair Instructions
    Complaint SRS indicator light illuminated in the instrument cluster. Electrical fault in the rear airbag/window airbag that may cause a connection between the airbag pins or to the vehicle mass Cause Contact problems that create a short circuit between the …
  • LI83.70-P-080411 Mar 30, 2026 · Service Bulletin/Repair Instructions
    Complaint No heating output is available during electric driving operation. In conventional (combustion engine) driving operation, full heating output is available. Cause Possible defect in the N33/5 water heater (high-voltage PTC booster heater) Remedy If …
  • LI00.01-P-078887 Mar 25, 2026 · Service Bulletin/Repair Instructions
    Complaint The intent of this document is to provide workshops with helpful technical reference language. • Commonly used acronyms in LI's and TIPS cases. • Control unit names, numbers, and how to identify. • Network/wiring architecture groups to baumuster q…
  • LI46.10-P-079374 Mar 25, 2026 · Service Bulletin/Repair Instructions
    Complaint Customer concern for ESP/Brake or Steering yellow instrument cluster message AND C220564 in the N80 Steering Column Control Module (Valeo Parts only). To check which supplier steering column module is present in the vehicle, see attachment "Suppli…
  • LI91.10-P-078305 Mar 26, 2026 · Service Bulletin/Repair Instructions
    Complaint The "easy entry and exit feature" function deactivates itself after a brief period. (see attachment) Cause The cause is currently being investigated. Remedy Update the HU7 to the latest software version, then perform a factory reset of the HU7. St…
  • LI82.60-P-080383 Mar 25, 2026 · Service Bulletin/Repair Instructions
    Complaint Radio station cover art does not refresh when switching stations. The UI continues to show the old station’s artwork instead of updating to the new one. Cause Root cause currently being investigated. Remedy Please do not replace any parts. Please …
  • LI82.85-P-080359 Mar 19, 2026 · Service Bulletin/Repair Instructions
    Complaint Mercedes me connect services inoperative (me-Call, Remote Status, etc.). Mercedes me services - activation not possible Notes: - The event code "B16AC00 - The configuration of the SIM card is erroneous" is active and stored - The head unit shows n…
  • LI82.85-P-078722 Mar 11, 2026 · Service Bulletin/Repair Instructions
    Complaint The vehicle's position on the map is displayed far away from its actual position, e.g. the vehicle is displayed as being in the middle of the ocean. Note: No relevant DTC is displayed during the quick test. Cause The GNSS antenna is not correctly …
  • LI54.65-P-080132 Mar 9, 2026 · Service Bulletin/Repair Instructions
    Complaint 1. General Diagnostic Tips 2. One or More PARK Sensor Activations 3. Red Ring Around Vehicle 4. "Active Parking and Parking Assist Inoperative" on Instrument Cluster 5. Cameras 6. Other Park Topics Cause Various root causes Remedy See attached dia…
  • LI82.00-P-080029 Mar 9, 2026 · Service Bulletin/Repair Instructions
    Complaint The seat may no longer be adjustable using the electric seat adjustment switch on the door module. No related error is stored in the quick test. Cause Under certain conditions, the electric seat adjustment switch may remain in sleep mode. It is th…
  • LI82.10-P-078301 Mar 9, 2026 · Service Bulletin/Repair Instructions
    Complaint Headlamp, front fog lamp leaky or fogged Cause Fogging of the headlamps is a natural phenomenon, which can occur under certain climatic conditions. It does not lead to any technical impairment of the headlamp. If a pressure compensation diaphragm …
  • LI54.10-P-073164 Mar 4, 2026 · Service Bulletin/Repair Instructions
    Complaint Yellow information message in driver display (instrument cluster): "Switch on motor to charge the 12V battery" Cause The state of charge (SOC) of the 12V battery has dropped to 45% or less. Remedy This warning message appears as soon as the state …
Source: NHTSA manufacturer communications files.