AutoStatsIQ
Data through Oct 2026
Model year

2020 MCI J4500

Body and fuel not decoded. Owner complaints on file from no date to no date.

Recalls (9)Complaints (0)Investigations (1)Bulletins (46)
Recall campaigns covering this model year926k vehicles or units across those campaigns
Owner complaints0Not enough peers on file
Severity indexNoneCrash, fire, injury or death per 100
First 24 months0Complaints in its first two years
Complaints over time

Complaints about the 2020 MCI J4500 by year filed

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

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

Complaints by component

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

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Source: NHTSA ODI complaints file. A complaint can name more than one component; it is counted under the first.
Recalls

9 recall campaigns cover the 2020 MCI J4500

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 2020 MCI J4500
CampaignFiledSubjectComponentVehiclesRemedy
25V-853Dec 10, 2025Front door lower curb view glazing material is incorrectStructure15,454Part replacement
23V-240Apr 5, 2023Vehicle's rear lighting may be obstructed when bikes are installed on the bike rackEquipment140Not stated
21V-971Dec 15, 2021Fuel tubes between the fuel rail and the injectors for cylinders four, five, and six may fatigue and crack, which can result in a high pressure…Fuel system1,125Repair or modification
21V-748Sep 24, 2021Main Distribution Panel (MDP) located within the battery compartment contains a circuit board that may failElectrical system2,455Repair or modification
21V-364May 18, 2021Sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leakFuel system1,845Part replacement
21V-063Feb 10, 2021Power cables may have been improperly installed and routed in the vehicle battery compartment, which may result in chafingElectrical system1,229Inspection
20V-526Aug 31, 2020Coolant hose may fail, resulting in a low coolant warning followed by an engine shut down sequence, as well as the potential for engine coolant…Engine and cooling1,561Part replacement
20V-352Jun 12, 2020Build-up of debris, corrosion, and/or water flow could cause a high resistance path to ground for the sense stud on the back of the alternator and…Electrical system1,067Repair or modification
20V-242Apr 29, 2020Seat belts may not extend from the retracted position, rendering the seat belt unusableSeat belts641Part replacement
Source: NHTSA ODI recalls file.
Look up a VIN at NHTSA
Owner complaints

What owners reported about the 2020 MCI J4500

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.

0 complaints on file.

    Source: NHTSA ODI complaints file.
    Investigations

    1 NHTSA investigation on file

    • PE20001 Preliminary evaluation, Engine and cooling
      Supply and return heater hose rupture
      Opened Mar 13, 2020, closed Sep 21, 2020 · led to a recall
    Source: NHTSA ODI investigations file.
    All investigations
    Service bulletins

    46 manufacturer communications cover this model year

    Technical service bulletins and other notices the manufacturer sent to dealers. A bulletin is not a recall.

    • ITS61263 Aug 28, 2026 · Service Bulletin/Repair Instructions
      ITS to replace the neck fill assembly with a new design which resolves a possible splashback issue at higher fuel flow rates, without the need for fuel tank removal.
    • TSIB 26-07 Aug 11, 2026 · Service Bulletin/Repair Instructions
      This bulletin is to provide instructions for clearing DTC 1067 FMI 7 (Pressure Sensor Not Calibrated) and FMI 11 (Primary and Secondary Circuit Pressure Sensor (PS1/PS2) Plausibility Error - BS Pressure), when required to prevent the loss of Adaptive Cruis…
    • TSIB 26-05 Jun 11, 2026 · Service Bulletin/Repair Instructions
      This bulletin introduces an optional product improvement to the A/C compressor drive system for coaches equipped with a Cummins X12. The improved pulley system is available for customers who wish to reduce noise and vibration characteristics and may be inst…
    • TSIB 26-01 May 6, 2026 · Service Bulletin/Repair Instructions
      This TSIB provides information to provide a software update. Some coaches using MCC HVAC Eco-Tempo ECU # 07-10-009 software T35-1581 / V1.04 may be experiencing random fault codes due to MCC software errors.
    • ITS61078 Mar 20, 2026 · Service Bulletin/Repair Instructions
      Instructions to remove DEF sensor bypass calibration from engine ECM and new sensor installation AR - 22inch DEF tank
    • ITS61414 Mar 11, 2026 · Service Bulletin/Repair Instructions
      Instructions to add parts and labels for required impact sensors and Prop 65 warning decals (for diesel) for the State of California new coach deliveries.
    • TSIB 26-04 Feb 9, 2026 · Service Bulletin/Repair Instructions
      This TSIB is to inform customers the recommended steering axle cleaning/greasing instructions to prevent damage on axle components due to displacement of grease from the bearings, lubrication reduction and accelerate wear for coaches with independent front …
    • ITS61475 Oct 1, 2025 · Service Bulletin/Repair Instructions
      Instructions to download BCC program (T35-1581) V4.06. This program will allow the Eco-Temp system to properly log A17 code for low suction pressure.
    • ITS61345 Jun 10, 2025 · Service Bulletin/Repair Instructions
      The mini fuses in the battery compartment for the condenser may not be enough for certain load conditions.
    • ITS61183 Jan 4, 2025 · Service Bulletin/Repair Instructions
      Instructions to seal gaps and prevent water intrusion into the LH switch panel.
    • ITS61235 Jan 10, 2025 · Service Bulletin/Repair Instructions
      This bulletin outlines steps to replace the existing harness with mini fuses to a more robust design and heavier duty fuses.
    • TSIB 24-03 Nov 5, 2024 · Service Bulletin/Repair Instructions
      Information to owners showing the proper procedure for checking the oil level in a BITZER HVAC compressor.
    • ITS61168 Oct 4, 2024 · Service Bulletin/Repair Instructions
      Instructions for replacing the condenser fan fuses with a more robust design.
    • ITS60877 Dec 8, 2023 · Service Bulletin/Repair Instructions
      Instruction to Service ITS60877 provides instructions to relocate an impact sensor in baggage bay to reduce nuisance activations.
    • TSIB 22-04 Jul 18, 2023 · Service Bulletin/Repair Instructions
      Instructions to improve sealing in the front junction box.
    • TSIB 22-12 Sep 7, 2022 · Service Bulletin/Repair Instructions
      MCI has released Technical Service Information Bulletin (TSIB) 22-12 to address concerns with water ingress in remote switch box. The TSIB provides guidance on how to rework the box to inhibit water intrusion and connector corrosion
    • TSIB 22-04 May 3, 2022 · Service Bulletin/Repair Instructions
      Technical Service Information Bulletin describing the retrofit for the front junction box cover on specifically equipped buses.
    • ITS60421 Apr 1, 2022 · Service Bulletin/Repair Instructions
      This Technical Instruction is a description of the inspections and cleaning procedures being recommended by MCI due to the parts shortages which are impacting the repair inspections associated with NHTSA Recall 21V-748. These are the same instructions as ou…
    • TSIB 22-02 Apr 1, 2022 · Service Bulletin/Repair Instructions
      This Technical Service Information Bulletin is a supplemental reminder to all MCI owners/operators of vehicles which are affected by the Cummins Equipment Recall 21E-099 and MCI Vehicle recall 21V-971.
    • ITS60421 Mar 17, 2022 · Service Bulletin/Repair Instructions
      This Instruction to Service (ITS) is a description of the inspections being recommedned by MCI due to the parts shortages which are impacting the repair instructions associated with NHTSA Recall 21V-748. These are the same instructions as outlined in the pr…
    • TSIB 22-01 Feb 4, 2022 · Service Bulletin/Repair Instructions
      This is an upgrade to Technical Service Information Bulletin TSIB 21-10 issued in January of 2022 which is specific to buses operating in severe duty and or corrosive environments. These bulletins have been issued to recommend interim inspection procedures …
    • TSIB 21-10 Jan 5, 2022 · Service Bulletin/Repair Instructions
      This Technical Service Information Bulletin describes interim inspection procedures required every 6000 miles on specific motor coaches due to the global parts shortage and subsequent delay in available parts to conduct the corrective actions associated wit…
    • TSIB 21-08 Oct 6, 2021 · Service Bulletin/Repair Instructions
      Technical Service Information Bulletin describing an update to the Preventaive Maintenance requirements for specifically equipped motor coaches with Kiel Avane model passenger seats.
    • TSIB 21-05 Jun 2, 2021 · Service Bulletin/Repair Instructions
      This Technical Sevice Information Bulletion is to advise of a part number supersession of the coolant hump hose, MCI PN 6L-8-353, to MCI PN 06-08-2262.
    • FCP 493 Mar 24, 2021 · Service Bulletin/Repair Instructions
      Technical instruction describing how to replace the plastic fuel tank filler neck gasket.
    • SB 3146 Oct 22, 2020 · Service Bulletin/Repair Instructions
      This service bulletin outlines the steps to add the secondary air filter. The secondary filter can only be used with primary air filter, MCI P/N: 09-03-1858.
    • SB 3145 Sep 24, 2020 · Service Bulletin/Repair Instructions
      This Service Bulletin informs affected owners of the steps to remove the unused Saucon provisional connector, MCI P/N 19-11-2941, located in the front junction box on coaches without a Saucon telematics module.
    • SB 3139 Sep 17, 2020 · Service Bulletin/Repair Instructions
      This Service Bulletin provides a checklist of actions to perform on a daily, weekly and monthly basis for parked coaches before they are considered ready for driving.
    • SB 485 Sep 17, 2020 · Service Bulletin/Repair Instructions
      This Service Bulletin informs affected owners that the A/C compressor on certain J4500 coaches are making excessive noise and vibration which may result in vibration transferred to the coach frame, possibly resulting in noise and passenger discomfort and th…
    • SB 484 Sep 17, 2020 · Service Bulletin/Repair Instructions
      This Service Bulletin informs affected owners that on certain D45CRTLE and J4500 model coaches equipped with Cummins X12 engines, the top alternator power and ground cables may potentially come in contact with the edge of the clamp mounting bracket and that…
    • FCP 483 Aug 5, 2020 · Service Bulletin/Repair Instructions
      This service bulletin advises owners of affected vehicles that Mobile Climate Control ("MCC") has notified MCI that certain new style evaporator motors supplied by MCC may have inadequate electrical contacts at the main circuit board, which could result in …
    • FCP 480 Jul 21, 2020 · Service Bulletin/Repair Instructions
      This service bulletin advises owners of affected vehicles that Modine Manufacturing Co. has notified MCI that some of the e-fan engine cooling modules may have their harness rubbing on an uncovered metal edge, which could lead to harness damage and cooling …
    • SB 3132 Mar 20, 2020 · Service Bulletin/Repair Instructions
      This service bulletin outlines the steps to relocate the ambient temperature sensor from the spare tire compartment to the bumperette to improve the accuracy of the sensor reading. This service bulletin needs to be done in conjunction with Service Bulletin…
    • SB 3131 Mar 20, 2020 · Service Bulletin/Repair Instructions
      This service bulletin outlines the steps to replace the adapter plates on the tag axle bellows to increase support for the bellow piston.
    • FCP 478 Mar 20, 2020 · Service Bulletin/Repair Instructions
      This service bulletin advises owners of affected vehicles that ZF has notified MCI that some brake chambers installed on the ZF drive axle have had water ingress, causing malfunction of the pneumatic brake system and dragging brakes during sub-zero temperat…
    • FCP 475 Mar 24, 2020 · Service Bulletin/Repair Instructions
      This service bulletin advises owners of affected vehicles that the throttle pedal sensors may provide intermittent, erratic data and cause the "engine check" light to become illuminated, and how repairs can be made to correct the vehicles.
    • D20M4 Mar 18, 2020 · Service Bulletin/Repair Instructions
      DDC Field service campaign for GHG17 Detroit DD13 engines requiring software reprogramming and new emission label replacement. This field service applies only to MCI (Motor Coach Industries) vehicles.
    • P16-42 Feb 22, 2020 · Service Bulletin/Repair Instructions
      This Procedure outlines the steps to space out the condenser discharge and heater coolant lines.
    • P16-41 Feb 21, 2020 · Service Bulletin/Repair Instructions
      This Procedure outlines steps to replace the double groove belt on the A/C Compressor with single groove matched belts.
    • FCP 3130 Jan 24, 2020 · Service Bulletin/Repair Instructions
      This Service Bulletin outlines the steps to install reinforcement bracket for the mudflap on coaches equipped with MCI P/N 03-33-2646.
    • FCP 3129 Jan 21, 2020 · Service Bulletin/Repair Instructions
      This Service Bulletin outlines the necessary steps to inspect the power steering system for proper operation. It also lists the necessary steps to replace the power steering seals if needed.
    • P03-276 Jan 16, 2020 · Service Bulletin/Repair Instructions
      This Procedure outlines steps to add mechanical fasteners to the dual lock tape retaining the rear window trim panel.
    • SB 3128 Dec 2, 2019 · Service Bulletin/Repair Instructions
      This Service Bulletin advises customers facing issues with a low engine oil pan protector profile how to replace it with a new model with higher ground clearance.
    • P12-24 Oct 24, 2019 · Service Bulletin/Repair Instructions
      This Procedure outlines the steps to inspect and adjust ground clearance setting.
    • SB 3123 Oct 30, 2019 · Service Bulletin/Repair Instructions
      This Service Bulletin informs owners of model year 2018-2020 J3500 and J4500 model coaches of the procedure to insulate the gap in the area between the front cap and under the dash panel on the driver's side, that will help shield the ambient temperature se…
    • SB 3125 Oct 7, 2019 · Service Bulletin/Repair Instructions
      This Service Bulletin informs owners of model year 2018-2020 J4500 model coaches hearing noise near the front sway bar during driving to apply anti-seize lubricant per the instructions.
    Source: NHTSA manufacturer communications files.
    About service bulletins