AI Damage2020 MCI J3500: common problems
The maker issued 30 service bulletins for this year. Details by component below, with sources.
Key figures
- Technical service bulletins (TSB)
- 30
Components owners complain about
| Component | Owner complaints | involving a crash | Technical service bulletins (TSB) |
|---|---|---|---|
| Electrical system | 0 | 0 | 13 |
| Equipment | 0 | 0 | 10 |
| Engine | 0 | 0 | 4 |
| Engine and cooling | 0 | 0 | 4 |
| Fuel/propulsion system | 0 | 0 | 2 |
| Service brakes | 0 | 0 | 2 |
| Structure | 0 | 0 | 2 |
| Fuel system | 0 | 0 | 1 |
| Powertrain | 0 | 0 | 1 |
| Seats | 0 | 0 | 1 |
| Steering | 0 | 0 | 1 |
| Suspension | 0 | 0 | 1 |
| Visibility | 0 | 0 | 1 |
| Wheels | 0 | 0 | 1 |
Comparison
What to check before buying
- Electrical system. Scan all modules, test the battery and alternator, inspect connectors near the impact zone.
- Engine. Cold start, unusual noises, oil leaks and engine codes.
- Engine and cooling. Radiator and fan after a frontal hit, coolant level and condition, overheating.
- Fuel/propulsion system. Fuel smell, leaks, rough running, fuel-system codes.
Manufacturer service bulletins
Bulletin titles as filed with NHTSA.
- 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…
- Instructions for updating software to allow automatic snow chains to activate (if equipped)
- 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 remove DEF sensor bypass calibration from engine ECM and new sensor installation AR -…
Instructions to remove DEF sensor bypass calibration from engine ECM and new sensor installation AR - 22inch DEF tank - CA emissions.
- Instructions to remove DEF sensor bypass calibration from engine ECM and new sensor installation AR -…
- 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 outlining the steps to replace the existing harness with mini fuses to a more robust design…
Instructions outlining the steps to replace the existing harness with mini fuses to a more robust design and heavier duty fuses.
- Instructions for relocating the idler pulley and adding a longer belt to improve reliability
- Information to owners showing the proper procedure for checking the oil level in a BITZER HVAC compressor
- Service Bulletin issued to relocate the alternator belt idler pulley and change the belt layout for…
Service Bulletin issued to relocate the alternator belt idler pulley and change the belt layout for improved performance.
- Instructions to improve sealing in the front junction box
- Instructions to correct an oil leak under the dipstick mounting bracket
NHTSA lists 30 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 2020 MCI J3500?
There are no owner complaints in the NHTSA data for this year; the data comes from 30 manufacturer service bulletins.
How many service bulletins (TSB) were issued for the 2020 MCI J3500?
NHTSA lists 30 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 2020 MCI J3500 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 2020 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.