MCI D4000
- Published
- 2020-06-17
- Model years
- 2018–2020
Issue:
On certain buses, a build-up of corrosion on the alternator connection could cause it to malfunction. If this happens, the alternator voltage output may increase. As a result, the control module may switch off the engine and cause a vehicle shutdown.
Safety Risk:
A sudden loss of engine power and vehicle shutdown could increase the risk of a crash.
Corrective Actions:
Motor Coach Industries (MCI) will notify owners by mail and instruct you to take your bus to an authorized repair facility to update the software in the Vehicle Multiplexing Module (VMM). MCI also recommends periodically inspecting, cleaning and re-applying corrosion inhibitor to the alternator.
View the official source notice →MCI D4005
- Published
- 2020-06-17
- Model years
- 2018–2020
Issue:
On certain buses, a build-up of corrosion on the alternator connection could cause it to malfunction. If this happens, the alternator voltage output may increase. As a result, the control module may switch off the engine and cause a vehicle shutdown.
Safety Risk:
A sudden loss of engine power and vehicle shutdown could increase the risk of a crash.
Corrective Actions:
Motor Coach Industries (MCI) will notify owners by mail and instruct you to take your bus to an authorized repair facility to update the software in the Vehicle Multiplexing Module (VMM). MCI also recommends periodically inspecting, cleaning and re-applying corrosion inhibitor to the alternator.
View the official source notice →MCI D45 CRT LE
- Published
- 2020-06-17
- Model years
- 2018–2020
Issue:
On certain buses, a build-up of corrosion on the alternator connection could cause it to malfunction. If this happens, the alternator voltage output may increase. As a result, the control module may switch off the engine and cause a vehicle shutdown.
Safety Risk:
A sudden loss of engine power and vehicle shutdown could increase the risk of a crash.
Corrective Actions:
Motor Coach Industries (MCI) will notify owners by mail and instruct you to take your bus to an authorized repair facility to update the software in the Vehicle Multiplexing Module (VMM). MCI also recommends periodically inspecting, cleaning and re-applying corrosion inhibitor to the alternator.
View the official source notice →MCI D4500
- Published
- 2020-06-17
- Model years
- 2018–2020
Issue:
On certain buses, a build-up of corrosion on the alternator connection could cause it to malfunction. If this happens, the alternator voltage output may increase. As a result, the control module may switch off the engine and cause a vehicle shutdown.
Safety Risk:
A sudden loss of engine power and vehicle shutdown could increase the risk of a crash.
Corrective Actions:
Motor Coach Industries (MCI) will notify owners by mail and instruct you to take your bus to an authorized repair facility to update the software in the Vehicle Multiplexing Module (VMM). MCI also recommends periodically inspecting, cleaning and re-applying corrosion inhibitor to the alternator.
View the official source notice →MCI D4505
- Published
- 2020-06-17
- Model years
- 2018–2020
Issue:
On certain buses, a build-up of corrosion on the alternator connection could cause it to malfunction. If this happens, the alternator voltage output may increase. As a result, the control module may switch off the engine and cause a vehicle shutdown.
Safety Risk:
A sudden loss of engine power and vehicle shutdown could increase the risk of a crash.
Corrective Actions:
Motor Coach Industries (MCI) will notify owners by mail and instruct you to take your bus to an authorized repair facility to update the software in the Vehicle Multiplexing Module (VMM). MCI also recommends periodically inspecting, cleaning and re-applying corrosion inhibitor to the alternator.
View the official source notice →MCI J4500
- Published
- 2020-06-17
- Model years
- 2018–2020
Issue:
On certain buses, a build-up of corrosion on the alternator connection could cause it to malfunction. If this happens, the alternator voltage output may increase. As a result, the control module may switch off the engine and cause a vehicle shutdown.
Safety Risk:
A sudden loss of engine power and vehicle shutdown could increase the risk of a crash.
Corrective Actions:
Motor Coach Industries (MCI) will notify owners by mail and instruct you to take your bus to an authorized repair facility to update the software in the Vehicle Multiplexing Module (VMM). MCI also recommends periodically inspecting, cleaning and re-applying corrosion inhibitor to the alternator.
View the official source notice →