The Recall Desk
HighNHTSA·20V352000·Announced 2020-06-12

MCI Recalls 2018-2020 Buses Due to Alternator Voltage Issue

Motor Coach Industries is recalling 1,067 buses because debris or water may cause excessive alternator voltage, leading to engine shutdown and increased crash risk.

What this means for you

Real risk of harm even if no illness or injury has been reported yet. Stop using the product and follow the agency's guidance.

Our severity reasoning: The recall involves a risk-of-harm product where a loss of engine power may increase the risk of a crash, but no injuries or fatalities have been reported in the source text.

Plain-English summary

Motor Coach Industries (MCI) is recalling certain 2018-2020 J4500, D45 CRT LE, D4005, D4500, D4505, and D4000 buses. The recall affects 1,067 vehicles equipped with electric cooling fans, a Borg Warner 55SI model dual alternator configuration, and a Parker Vansco Multiplexing Module (VMM) Multiplex system.

A build-up of debris, corrosion, or water flow can create a high resistance path to ground for the alternator's sense stud. This condition may cause the alternator to produce excessive voltage output that exceeds the programmed threshold in the VMM, resulting in a loss of engine power and vehicle shutdown. If the engine shuts down or loses power while the vehicle is in motion, it may increase the risk of a crash.

MCI will notify affected owners, and dealers will install a new application code in the Parker VMM multiplex modules to increase the overvoltage threshold limit at no charge. The recall began on July 23, 2020. Owners may contact MCI customer service at 1-800-241-2947 or the NHTSA Vehicle Safety Hotline at 1-888-327-4236.

The recalled product

Product
MCI J4500, D45 CRT LE, D4005, D4500
Brand
MCI
Manufacturer
Motor Coach Industries
Category
Vehicle — Bus
Hazard
Affected units
1,067

Is your product affected?

Check your packaging against the codes below. If any of them match, the product is part of this recall.

Model numbers (6)

  • J4500
  • D45 CRT LE
  • D4005
  • D4500
  • D4505
  • D4000

Distribution

Distributed nationwide across the United States.

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