2021 Mci D4000istv problems, complaints & recalls
Safety recalls (1)
Visibility:glass, Side/Rear 2025-12-10 · campaign 25V853000 · 15,454 vehicles
Defect: Motor Coach Industries (MCI) is recalling certain 102DL3, 102D3, MC12PTV, E4500, D4000, 102D3ISTV, D4500, J4500, D4000ISTV, D4005, D4505, and J3500 transit buses. Please refer to MCI's recall report for specific model year information. The front door lower curb view glazing material is incorrect. As such, these vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) number 205, "Glazing Materials."
Risk: The incorrect window glazing material may reduce the driver's visibility, increasing the risk of a crash.
Fix: MCI will replace the glass, free of charge. Owner notification letters were mailed February 4, 2026. Owners may contact MCI customer service at 1-800-241-2947. MCI's number for this recall is 22-005.
Service bulletins (7)
Technical service bulletins are repair instructions manufacturers send dealers for known issues. Unlike recalls, the fix is not automatically free — but naming the bulletin at the service desk can save diagnosis time and support goodwill repairs.
Service Brakes 2026-08-11 · TSIB 26-07 · 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 cruise control functionality and the illuminatio
Engine 2026-06-11 · TSIB 26-05 · 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 installed at the customer’s discretion.
Electrical System 2026-05-06 · TSIB 26-01 · 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.
Unknown Or Other 2024-11-05 · TSIB 24-03 · Service Bulletin/Repair Instructions
information to owners showing the proper procedure for checking the oil level in a bitzer hvac compressor.
Electrical System 2022-04-01 · ITS60378 · Service Bulletin/Repair Instructions
this technical instruction describes how to upgrade the delco alternator indicator lamp ring terminal.
Fuel System, Diesel 2022-04-01 · TSIB 22-02 · 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.
Showing the 6 most recent of 7 bulletins. Search all of them free at nhtsa.gov.
What owners report
No detailed complaint narratives on file.
Excerpts of consumer complaints filed with NHTSA, lightly truncated. They are owner statements, not verified findings.