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Model year

2015 Mercedes-Benz SL550

Convertible, gasoline, built in Germany. Owner complaints on file from Jul 27, 2020 to Mar 5, 2021.

Recalls (3)Complaints (2)Investigations (1)Bulletins (75)
Recall campaigns covering this model year324k vehicles or units across those campaigns
Owner complaints2Close to the median 2015 convertible
Severity index0.02015 convertibles average 12.1
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2015 Mercedes-Benz SL550 peaked in 2020, with 1 filed

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

00.250.50.75120201202120222023202420252026
Source: NHTSA ODI complaints file. The lighter column runs through October.
Components

100% of complaints about the 2015 Mercedes-Benz SL550 name engine and cooling

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

Engine and cooling
2
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 2015 Mercedes-Benz SL550

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 2015 Mercedes-Benz SL550
CampaignFiledSubjectComponentVehiclesRemedy
19V-787Nov 1, 2019For a full list of the affected models visit: https://static.nhtsa.gov/odi/rcl/2019/RMISC-19V787-4620.pdfCommunication24,226Software update
16V-899Dec 14, 2016Affected vehicles use an electric power steering system that may have improperly soldered contacts inside the control unit, potentially resulting…Steering70Part replacement
16V-439Jun 15, 2016Affected vehicles are equipped with low-beam headlights that may have been aimed incorrectly during vehicle productionLighting100Repair or modification
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2015 Mercedes-Benz SL550

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.

2 complaints on file, page 1 of 1.

  1. Filed Mar 5, 2021Failure Jul 10, 202050,730 milesOakland, CAEngine

    THE ENGINE HARNESS, ME CONTROL UNIT ANDCAM SENSOR FAILED CAUSING OIL TO LEAK INSIDE ENGINE AND COSTLY REPAIR. THIS IS A KNOW ISSUE ON PREVIOUS YEARS AND MODELS. AT THE TIME THE CAR ONLY HAD 50730 MILES.

    NHTSA complaint 11399230
  2. Filed Jul 27, 2020Failure Jul 8, 202050,730 milesOakland, CAEngine

    CHECK ENGINE LIGHT CAME ON. MERCEDES DEALERSHIP STATED THAT THE CAM SOLENOID FAILED, WHICH CAUSED OIL TO LEAK TO OTHER COMPONENTS OF THE ENGINE THAT NEEDED TO BE REPLACED INCLUDING ENGINE WIRING HARNESS, CONTROL UNIT, SOLENOID, POSITION SENSOR, OXYGEN SENSOR, LAMBDA PROBE AND INJECTORS. CAR WAS JUST AT DEALERSHIP AT THE END OF MARCH/APRIL DUE TO MISFIRE AND CHECK ENGINE LIGHT. NO MENTION OF DAMAGE OR LEAKAGE. PREMATURE FAILURE ON PART.

    NHTSA complaint 11341734
Source: NHTSA ODI complaints file.
Investigations

1 NHTSA investigation on file

  • EA21002 Engineering analysis, Airbags
    Desiccated Air Bag Inflator Rupture
    Opened Sep 17, 2021, still open
Source: NHTSA ODI investigations file.
All investigations
Service bulletins

75 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.

  • 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…
  • 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…
  • 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…
  • LI82.85-P-080507 May 26, 2026 · Service Bulletin/Repair Instructions
    Complaint After successful commissioning of the HERMES control unit (N112/9) with XENTRY Diagnosis DVD 03/2026, the message "SOS - service not activated" appears on the instrument cluster. In addition, the following two conditions are also met: • HERMES (N1…
  • LI82.85-P-080559 May 26, 2026 · Service Bulletin/Repair Instructions
    Complaint The customer requests deactivation of the N112/9 HERMES communication module Note: Deactivation of the HERMES control unit (N112/9) is not supported for gray-market vehicles. Cause Before deactivating the HERMES control unit (N112/9), it must be c…
  • 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 …
  • 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…
  • CL-Exhaust Valve Assembly Sep 6, 2023 · Other
    In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA ("MBUSA") is extending the coverage for the exhaust valve assembly on your vehicle as follows: Why the …
  • EW-Exhaust Valve Assembly Sep 6, 2023 · Warranty Program/Extension
    This NCU replaces the prior NCU issued on March 10, 2023, and contains clarification on reimbursement timeline and removal of damage codes related to intake valves/guide. In our continuing efforts to assure the proper performance of Mercedes-Benz products a…
  • 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…
  • 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 …
  • LI82.10-P-078307 Feb 25, 2026 · Service Bulletin/Repair Instructions
    Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A…
  • LI82.10-P-078301 Feb 24, 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 …
  • LI82.10-P-078896 Feb 24, 2026 · Service Bulletin/Repair Instructions
    Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A…
  • LI27.19-P-072588 Sep 17, 2025 · Service Bulletin/Repair Instructions
    Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission control unit Y3/8n4 Remedy For vehicles with 722.9 transmission: Ensure LI54…
  • LI27.19-P-074985 Jul 16, 2025 · Service Bulletin/Repair Instructions
    Complaint Commissioning not possible after replacement of TRANSMISSION 722.9 or of electrohydraulic controller unit (EHS) or of repair kit controller unit (VGS). Cause The wrong older A-code ("Generation EHS") is documented in VeDoc for the newly installed …
  • LI46.15-P-063353 Jun 9, 2025 · Service Bulletin/Repair Instructions
    Complaint Height adjustment of electric steering column adjustment jammed in the top/bottom adjustment position (e.g. with Easy Entry function), noise (breakaway noise) when leaving the limit stops of the height adjustment. Cause Height adjustment moves to …
  • LI33.30-P-056665 May 21, 2025 · Service Bulletin/Repair Instructions
    Complaint Single throttle lift-off clunking noise from the side shaft when moving off (audible at the outboard end). The clunk is heard once when changing from forward to reverse (and vice versa). Note: Sound file in attachment Cause If the complaint is eli…
  • LI82.85-P-079271 May 22, 2025 · Service Bulletin/Repair Instructions
    Complaint After a software update of HERMES communication module N112/9 has been performed on a gray import vehicle, the message "SOS - Service not activated" is displayed in the instrument cluster. Cause The message "SOS - Service not activated" tells the …
  • LI82.10-P-078896 Apr 28, 2025 · Service Bulletin/Repair Instructions
    Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A…
  • LI82.10-P-078301 Apr 28, 2025 · 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. Remedy NOTE: If a pressure compensati…
  • LI82.70-P-077433 Mar 5, 2025 · Service Bulletin/Repair Instructions
    Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. C…
  • LI35.30-P-058566 Jan 15, 2025 · Service Bulletin/Repair Instructions
    Complaint 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 elimina…
  • LI33.20-P-078406 Jan 28, 2025 · Service Bulletin/Repair Instructions
    Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements. Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles in the below FIN rang…
  • LI27.19-P-072588 Nov 20, 2024 · Service Bulletin/Repair Instructions
    Complaint Transmission control unit Y3/8n4 (fully integrated transmission control unit (VGS)) not listed in quick test and/or no communication possible with VGS. Cause Transmission control unit Y3/8n4 Remedy It is important that LI54.15-P-057373 is processe…
  • LI33.20-P-078406 Nov 21, 2024 · Service Bulletin/Repair Instructions
    Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements. Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles up to FIN vehicle ide…
  • LI82.10-P-078069 Nov 13, 2024 · Service Bulletin/Repair Instructions
    Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing …
  • LI82.35-P-078467 Oct 23, 2024 · Service Bulletin/Repair Instructions
    Complaint Washer fluid system leaks Cause Various possible causes: 1. Washer fluid reservoir itself. 2. Seal on washer fluid pump/washer fluid reservoir. 3. Washer fluid pump. 3.1. Distributor housing leaks. 3.2. Pump fitting leaks. 3.3. Washer fluid hose c…
  • LI82.70-P-077433 Sep 28, 2024 · Service Bulletin/Repair Instructions
    Complaint During a phone call, the called party has difficulty understanding/cannot understand the driver, or interference/background noises are audible to the called party during a call. It becomes increasingly difficult to understand as the speed rises. C…
  • LI33.20-P-078406 Sep 26, 2024 · Service Bulletin/Repair Instructions
    Complaint Creaking noise, in irregular sequence when driving slowly in combination with slight steering movements. Sound file attached for comparison. NOTE: Steering functionality is not affected. For 192 and 232: Only affects vehicles up to VIN vehicle ide…
  • CL - 2022080005 Aug 9, 2024 · Other
    In our continuing efforts to ensure the proper performance and quality of your vehicle, we are writing to inform you that on certain Model Year 2011-2018 C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT vehicles with 6 and …
  • LI82.10-P-078307 Sep 21, 2024 · Service Bulletin/Repair Instructions
    Complaint Headlamps leaking or fogged Cause The fogging of the headlamp is a natural phenomenon which can occur under certain climatic conditions. In contrast to a leaky headlamp, physical fogging does not result in a technical impairment of the headlamp. A…
  • LI82.10-P-078304 Sep 9, 2024 · Service Bulletin/Repair Instructions
    Complaint Headlamps fogged or droplets forming. Cause Due to the housing cover with pressure compensation diaphragm, the headlamps are a "closed system". This means that the headlamps are protected against acid gases, dirt and exhaust gas. However, moistur…
  • LI82.10-P-078301 Sep 10, 2024 · Service Bulletin/Repair Instructions
    Complaint Headlamp or 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. Headlamps comply with all applicabl…
  • NCU - 2022080005 Aug 10, 2024 · Service Campaign
    Mercedes-Benz AG ("MBAG"), the manufacturer of Mercedes-Benz vehicles, has determined that on certain Model Year (“MY”) C-Class, E-Class, S-Class, G-Class, CL, CLS, ML, GL, GLE, GLS, GLC, SL, and AMG GT (204, 205, 207, 212, 213, 217, 221, 222, 463, 216, 218…
  • LI82.10-P-078069 Jul 23, 2024 · Service Bulletin/Repair Instructions
    Complaint Rear lamps fogged up/not leaktight. Cause Fogging of the rear lamps is a natural phenomenon, which can occur under certain climatic conditions. This does not lead to any technical impairment of the rear lamps. Remedy Rear lamp: Remedy 1: Clearing …
  • NCU - 24240304 Mar 12, 2024 · Service Bulletin/Repair Instructions
    As previously reported, to enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) has entered into a Settlement regarding claims relating to allegations that the 5…
  • LI91.18-P-077075 Dec 4, 2023 · Service Bulletin/Repair Instructions
    Crease formation on genuine leather seat covers in vehicles with low mileage ⢠Objects left on the seats for extended periods of time (pressure marks). ⢠Objects wedged between the seat backrest and seat cushion (e.g. seat belt buckle). ⢠Light init…
  • LI82.85-P-076799 Aug 18, 2023 · Service Bulletin/Repair Instructions
    The Mercedes me connect services cannot be activated. The remote status data does not update. Error in N112/9 - control unit for telematics services (HERMES). In the HERMES control unit log, under the "URL" tab, the value DEFAULT is stored for "atpServ…
  • ELW - M278 Cat Jul 27, 2023 · Service Bulletin/Repair Instructions
    This NCU replaces the prior NCU issued on May 11, 2023, and clarifies replacement part information. In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz AG (“MB…
  • ELW-M278Catalyst May 11, 2023 · Service Bulletin/Repair Instructions
    This extended warranty applies to the following condition that may necessitate the repair or replacement of the catalytic converter system and is related to: • A check engine Malfunction Indicator Lamp (‘MIL’) may illuminate due to sulfur contamination in …
  • CL-ELWSubframe Mar 31, 2023 · Service Bulletin/Repair Instructions
    Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle regardless of owner…
  • CL-ELWExhaustVal Mar 30, 2023 · Service Bulletin/Repair Instructions
    Why the warranty extension? On certain Model Year 2011-2016 CL/CLS/S/E/ML/SL/G/GL/GLE-Class vehicles with V8 engines, the exhaust valve assembly might not work properly and result in an engine misfire and potential illumination of the check engine Malfun…
  • ELW-RearSubframe Mar 10, 2023 · Service Bulletin/Repair Instructions
    Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle regardless of owner…
  • ELW-ExhaustValve Mar 10, 2023 · Service Bulletin/Repair Instructions
    In our continuing efforts to assure the proper performance of Mercedes-Benz products and to enhance the satisfaction of our customers, Mercedes-Benz USA, LLC (“MBUSA”) is extending the warranty coverage on the exhaust valve system in certain Model Year (“MY…
  • ELW-RearSubframe Feb 10, 2023 · Service Bulletin/Repair Instructions
    Mercedes-Benz USA, LLC (MBUSA) has extended the warranty for the rear subframe on the vehicles listed below, from the original New Vehicle Limited Warranty of 4 years/50,000 miles to 20 years/unlimited miles, and applies to the vehicle regardless of ownersh…
  • LI82.20-P-073063 Feb 16, 2022 · Service Bulletin/Repair Instructions
    Complaint The touchpad dimming function does not work and the search lighting is either at maximum brightness or fully off (dependent upon dimming signal). Note: The dimming functions of the instrument cluster and head unit display are not affected and re…
  • LI68.05-P-060306 Jan 27, 2022 · Service Bulletin/Repair Instructions
    Complaint The garage door hand transmitter cannot be initialized with the integrated garage door opener in the inside rearview mirror. Cause 1. The integrated garage door opener (GDO) is not compatible with the opening system installed in the garage. 2…
  • LI09.00-P-074093 Dec 8, 2021 · Service Bulletin/Repair Instructions
    "MY15+ M278 and M157 Equipped Vehicles with Fault Code ""P023400 – Boost Pressure is Too High"" "
  • LI8295P054406 Aug 28, 2013 · Service Bulletin/Repair Instructions
    "SOS mbrace service not activated".
  • LI8285P055695 Aug 5, 2013 · Service Bulletin/Repair Instructions
    The COMAND unit does not start or the display remains dark.
  • LI8270P056963 Aug 21, 2013 · Service Bulletin/Repair Instructions
    Software update of COMAND Online control unit.
  • LI8270P055572 Aug 5, 2013 · Service Bulletin/Repair Instructions
    Mobile phone cotacts are not transferred completely.
  • LI0702P0547173 Nov 14, 2016 · Service Bulletin/Repair Instructions
    Ticking or pulsing noise from high-pressure pump and/or fuel injectors.
  • Launch NCU - 202 Jan 7, 2021 · Service Bulletin/Repair Instructions
    Mercedes-Benz AG (?MBAG?), the manufacturer of Mercedes-Benz, has determined that on certain Model Year (?MY?) 2013-2017 B-Class, C-Class, CLA-Class, CLS-Class, E-Class, G-Class, GL-Class, GLA-Class, GLC-Class, GLE-Class, GLK-Class, GLS-Class, GT-Class, M-C…
  • LI82.85-P-071453 Jul 31, 2020 · Service Bulletin/Repair Instructions
    Incorrect time and/or instrument cluster message "SOS, service not activated" and/or Mercedes Me connect services nonfunctional
  • NCU - HVAC Warra May 21, 2020 · Service Bulletin/Repair Instructions
    To enhance the satisfaction of our customers, avoid further costs of litigation and return focus to its core businesses, Mercedes-Benz USA, LLC (MBUSA) has entered into a settlement regarding claims relating to alleged mold and mildew type odors originating…
  • LI27.50-P-056467 Jul 26, 2013 · Service Bulletin/Repair Instructions
    Shift quality complaints and/or automatic transmission in limp-home mode in combination with one or more of the following fault codes: P060600, P072200, P072300, P072364, P072900, P073000, P073100, P073200, P073300, P073400, P073500, P076F00.
Source: NHTSA manufacturer communications files.
About service bulletins