2025 Mci J3500 problems, complaints & recalls
Safety recalls (1)
Equipment:other:labels 2025-07-08 · campaign 25V457000 · 321 vehicles
Defect: Motor Coach Industries (MCI) is recalling certain 2025 D4520, D45CRTLE, D45CRT, J3500, and 2025-2026 J4500 buses. The emergency exit label may be placed in the incorrect location. As such, these vehicles fail to conform to Federal Motor Vehicle Safety Standard (FMVSS) number 217, "Bus Emergency Exits and Window Retention and Release."
Risk: Incorrectly located labels may prevent or delay the use of the emergency exit, increasing the risk of injury.
Fix: MCI will install or mail labels as necessary, free of charge. Owner notification letters were mailed August 6, 2025. Owners may contact MCI customer service at 1-800-241-2947.
Service bulletins (9)
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
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.
Suspension 2026-02-09 · TSIB 26-04 · 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 suspension.
Electrical System 2026-01-07 · TSIB 25-09 · Service Bulletin/Repair Instructions
instructions to verify security of interior rei brand monitors on affected coaches.
Steering 2025-10-15 · TSIB 25-08 · Service Bulletin/Repair Instructions
mci noticed that some customers operating in severe duty environments were experiencing the exterior u-joints of the lower steering shaft binding due to corrosion. because of this, mci has developed a new re-greaseable u-joint service kit (nf pn: 6505981) to replace the existing greased for life u-j
Engine 2025-01-21 · ITS61191 · Service Bulletin/Repair Instructions
instructions for relocating the idler pulley and adding a longer belt to improve reliability.
Showing the 6 most recent of 9 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.