Motor Coach Industries build-up of debris, corrosion, and/or water flow could cause a high resistance path to ground for the sense stud on the back of the alternator and cause the alternator to produce excessive voltage output, which may exceed the threshold limit currently programmed in the VMM and result in a loss of engine power and vehicle shutdown.
The short version
Motor Coach Industries reported a problem with the electrical system alternator/generator/regulator. Here is what owners need to know.
A build-up of debris, corrosion, and/or water flow could cause a high resistance path to ground for the sense stud on the back of the alternator and cause the alternator to produce excessive voltage output, which may exceed the threshold limit currently programmed in the VMM and result in a loss of engine power and vehicle shutdown.
If the engine shuts down or loses power while the vehicle is in motion, this may increase the risk of a crash.
MCI will notify the affected owners, and dealers will install a new application code in the Parker VMM multiplex modules increasing the overvoltage threshold limit, free of charge.
Affected vehicles
These model years are included in NHTSA campaign 20V-352.
| YEAR RANGE | MODEL |
|---|---|
| 2018–2020 | Motor Coach Industries D4005 |
| 2018–2020 | Motor Coach Industries D45 CRT LE |
| 2018–2020 | Motor Coach Industries D4505 |
| 2018–2020 | Motor Coach Industries J4500 |
What changed
Newest first. The record shows both when the recall began and what has changed since.
- Recall reported to NHTSA. LATEST
Drive one of these? Check your VIN to see if your specific vehicle is affected.
Check your VINWhat this record means
Data from the NHTSA recall database. A clean VIN check means no open federal recalls for that vehicle — not that it never had one.
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