2021 Mci D4520
Safety record from NHTSA: recalls, owner complaints, investigations and service bulletins.
Have the VIN?
These records cover every 2021 Mci D4520. To see whether one car still needs a recall repair, decode its VIN or check it with NHTSA.
Recalls
2 recalls name the 2021 Mci D4520. Newest first.
Motor Coach Industries (MCI) is recalling certain 2018-2026 buses. Please see the complete list of models above. The instrument panel indicator light may not illuminate when the hazard warning lights are on and the master run switch is in the 'Off' position. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety…
Risk and remedy
Risk
Without the illuminated reminder, the driver may fail to turn off the exterior lights when no longer needed. Hazard warning lights that remain activated unintentionally can confuse other drivers, increasing the risk of a crash.
Remedy
MCI will update the software, free of charge. Owner notification letters are expected to be mailed November 24, 2026. Owners may contact MCI customer service at 1-800-241-2947.
Motor Coach Industries (MCI) is recalling certain 2019-2022 D4000 ISTV, D4500, 2021 D4000, D4520, 2020-2021 D4505, D4005, 2020-2022 D45CRTLE, and 2019-2021 J4500 vehicles equipped with certain Cummins X12 diesel engines. The fuel tubes between the fuel rail and the injectors for cylinders four, five, and six may fatigue and crack, which can result in a…
Risk and remedy
Risk
A high pressure fuel leak in the presence of an ignition source can increase the risk of a fire.
Remedy
On engines with 75 miles or less, Cummins dealers will install vibration isolators to the fuel tubes. Engines with more than 75 miles will receive new fuel tubes with vibration isolators. Repairs will be performed free of charge. Owner notification letters were mailed March 11, 2022. Owners may contact MCI customer service at 1-800-241-2947. MCI's number for this recall is R21-028.
Service bulletins
Technical service bulletins and other communications the manufacturer sent dealers about this vehicle. Ask a dealer for the full document by its number.
- 11011092Information to owners showing the proper procedure for checking the oil level in a BITZER HVAC compressor.
- 11005621Service instruction for updating plug doors to improve reliability and reduce wind noise.
- 10232558Instructions to properly adjust entrance door to ensure proper operation.
- 10232557Instructions for improving fuel tank venting while fueling.
- 10213037Technical Service Information Bulletin describing the retrofit for the front junction box cover on specifically equipped buses.
- 10210903This 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.
- 10206198This Technical Service Information Bulletin (TSIB) describes an update from Meritor for the bolt torque application requirements on hub-to-rotor bolts for the front, drive and tag axles, on specific coaches equipped with Meritor EX225 disc brakes, on either Conventional, PreSet or Unitized Wheel-End hubs.
Every Mci D4520 model year
Bars are owner complaints, dots mark years with recalls. Select a year to open its report.