Mci recall: Electrical system
What is wrong
Motor Coach Industries (MCI) is recalling certain 2018-2020 D4000, D4005, D4500, D4505 and D45CRTLE buses manufactured with electric cooling fans (E-fan) for the radiator and charge air cooler, Borg Warner 55SI model dual alternator configuration (with a sense stud and wire), and Parker Vansco Multiplexing Module (VMM) Multiplex system. 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.
What could happen
If the engine shuts down or loses power while the vehicle is in motion, this may increase the risk of a crash.
The fix
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. The recall began July 23, 2020. Owners may contact MCI customer service at 1-800-241-2947. MCI's number for this recall is SB 479.
Vehicles covered
- Mci D4000 2018–2020
- Mci D4005 2018–2020
- Mci D45 Crt Le 2018–2020
- Mci D4500 2018–2020
- Mci D4505 2018–2020
- Mci J4500 2018–2020
Facts
- NHTSA recall number
- 20V352000
- Type
- Vehicle
- Filed by
- Motor Coach Industries
- Reported to NHTSA
- Jun 12, 2020
- Owners notified
- Jul 23, 2020
- Vehicles or items affected
- 1,067
- Started by
- The manufacturer
- Built
- –
- Part
- Electrical system › Alternator/generator/regulator
- Maker's own recall number
- SB 479
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Other recalls for the same vehicles
- Mci recall: Structure Dec 10, 2025
- Mci recall: Equipment Jul 8, 2025
- Mci recall: Equipment Apr 5, 2023
- Mci recall: Fuel system, diesel Dec 15, 2021
- Mci recall: Electrical system Sep 24, 2021
- Mci recall: Equipment adaptive/mobility Sep 23, 2021
To check one car, enter its 17-character VIN on the official NHTSA page: a recall may cover only some vehicles of a model year.
Recall data: National Highway Traffic Safety Administration (NHTSA). Nebula is not affiliated with or endorsed by NHTSA.