AI Damage2025 MCI J4500: common problems
The maker issued 25 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 25
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 10 |
| Structure | 0 | 0 | 4 |
| Engine | 0 | 0 | 3 |
| Steering | 0 | 0 | 2 |
| Exterior lighting | 0 | 0 | 1 |
| Fuel/propulsion system | 0 | 0 | 1 |
| Service brakes | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
| Other | 0 | 0 | 5 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Structure. Rails, pillars, panel gaps, signs of pulling or welding.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Steering. Steering play, power assist, rack and tie rods after a wheel impact.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- Instructions to update the PLC program to add a brake light telltale on dash when brakes are activated
- Instructions for uploading the latest program to add theme lights
- This bulletin is to provide instructions for clearing DTC 1067 FMI 7 (Pressure Sensor Not Calibrated) and…
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…
- This bulletin introduces an optional product improvement to the A/C compressor drive system for coaches…
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…
- Instructions for adding an oil collection bottle on the HVAC compressor to measure oil seepage past the seal
- 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.
- Instructions to add parts and labels for required impact sensors and Prop 65 warning decals (for diesel)…
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.
- This TSIB is to inform customers the recommended steering axle cleaning/greasing instructions to prevent…
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…
- Instructions to flash the latest PLC program based on customer requests to have PLC transmit specified…
Instructions to flash the latest PLC program based on customer requests to have PLC transmit specified signals to Saucon system.
- Instructions to realign windshield support plate to prevent vertical windshield cracks
- Instructions for adding an oil collection bottle to the HVAC compressor to measure oil loss through the…
- Instructions to verify security of interior REI brand monitors on affected coaches
NHTSA lists 25 bulletins for this year; the 12 newest are shown here.
Other years of this model
Questions and answers
What are the most common problems with the 2025 MCI J4500?
There are no owner complaints in the NHTSA data for this year; the data comes from 25 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2025 MCI J4500?
NHTSA lists 25 manufacturer service bulletins for this year. A bulletin tells dealers how to diagnose or fix a known issue; it is not a recall.
Should I buy a 2025 MCI J4500 from a US auction?
Owner complaints describe defects, not crash damage. Before bidding, check the components listed above and review the lot photos: VinWind builds a report of visible and hidden damage by VIN.
Other 2025 models
Read also
Sources: public NHTSA data (USA): service bulletins and owner complaints; YouTube: links to videos credited to their authors. Complaints are owner statements not verified by NHTSA, and describe defects rather than crash damage. Data updated 2026-11-04.