- The problem
- 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.
- The risk
- 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.
Vehicle safety record
2020 Mci D4000 Problems, complaints & recalls
No owner complaints about the 2020 Mci D4000 have been filed with NHTSA. It is covered by 1 recall, the latest in June 2020 for the alternator / generator / regulator.
NHTSA data checked
AFar fewer problems than a typical D4000 year, for its age
- Complaints
- 0
- Recalls
- 1
- Crashes
- 0
- Fires
- 0
- Injuries
- 0
- Deaths
- 0
2020 Mci D4000 recalls 1
Recall repairs are free. Your dealer fixes them whether or not you bought the car there - check your VIN at nhtsa.gov/recalls to see if yours is done. What to do
What owners say
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No complaints about the 2020 Mci D4000 yet
No owner has filed a complaint about this vehicle with NHTSA. If yours has a problem, share it here and report it to NHTSA.
Mci D4000: every year compared
All D4000 yearsQuestions about the 2020 Mci D4000
Does the 2020 Mci D4000 have any recalls?
Yes - NHTSA lists 1 recall for the 2020 Mci D4000: alternator / generator / regulator (June 2020). Recall repairs are free at any authorized dealer. Enter your VIN at nhtsa.gov/recalls to see whether yours has been fixed.
How many complaints has the 2020 Mci D4000 had?
None have been filed with NHTSA so far.
Is the 2020 Mci D4000 a reliable vehicle?
Its Safety Index is 85 out of 100 (grade A: far fewer problems than a typical Mci D4000 year, for its age). The index weighs complaints, crashes, fires, injuries, deaths and recalls against how long the vehicle has been on the road, compared with the same model's other years. It is not a measure of every repair - read the complaints and owner experiences, and have any used vehicle inspected before you buy.
What should I do if my 2020 Mci D4000 has a problem?
If it is a safety problem, stop driving it if it is unsafe and contact your dealer. Report it to NHTSA at nhtsa.gov/report-a-safety-problem - enough reports start investigations and recalls - and share your experience here so other owners know what to look for.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked . Complaints are owners' own reports and are not verified. How we use the data