2018 Mci J4500 Recall

On certain buses, the wrong glass may have been installed on the lower front entry door panel. As a result, the glass may not meet certain requirements of Canadian regulations.

An incorrect window glass could reduce visibility and increase the risk of a crash.

Motor Coach Industries (MCI) will notify owners by mail and provide you with instructions for how to replace the lower glass panel. Alternatively, you may schedule an appointment to have the lower glass panel replaced at an authorized MCI service center.

On certain buses, a circuit board for the main distribution panel (MDP) located in the battery compartment may fail. If this happens, the circuit board could overheat and cause a sudden vehicle shutdown.

A circuit board that overheats could create the risk of a fire. A sudden loss of engine power could increase the risk of a crash.

Motor Coach Industries (MCI) will notify owners by mail instruct you to take your bus to an authorized repair facility to replace the main distribution panel (MDP) with a new part that has a main disconnect and circuit breaker assembly. To reduce the safety risk, MCI recommends that you should inspect the condition of the MDP circuit board every 9600 km (6000 miles) until this recall is completed.

On certain buses, the fuel rail assembly could develop a leak. Note: This recall only affects buses equipped with a Cummins L9 or ISX12 diesel engine.

A fuel leak can create the risk of a fire.

Motor Coach Industries (MCI) will notify owners by mail and instruct you to take your bus to a Cummins authorized service center to inspect the fuel rail. If damage is found, the fuel rail and fuel lines will be replaced. If no damage is found, the fuel rail will be reassembled with new crush washers using a special tool.

On certain motor coaches, the power cable in the battery compartment may have been routed incorrectly. As a result, the cable could be damaged by contact with nearby parts. If this happens, the cable could create a short circuit.

A short circuit could create the risk of a fire.

Motor Coach Industries (MCI) will notify owners by mail and instruct you to take your vehicle to a dealer to inspect the power cable in the battery compartment and reposition it, if necessary.

On certain buses, the engine coolant hoses may be defective and could fail. As a result, engine coolant could leak. If this happens, a low coolant warning may appear and the engine can shut down. It could also cause coolant to spill onto the road.

A sudden loss of engine power could increase the risk of a crash. Additionally, an engine coolant leak could create a hazard for other road users. A bus that is disabled could result in a transfer of passengers in an uncontrolled environment, which may create a risk of injury.

Motor Coach Industries (MCI) will notify owners by mail and advise you to replace the engine coolant hoses. They will supply you with the replacement parts and instructions for completing the repairs.

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.

A sudden loss of engine power and vehicle shutdown could increase the risk of a crash.

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.

On certain buses, the brake hoses may be routed incorrectly and could become damaged or fail. If this happens, air could leak from the hose and cause a delay in the front brakes activating. This would reduce braking performance.

Reduced brake performance can cause extended stopping distances and increase the risk of a crash.

Motor Coach Industries (MCI) will notify owners by mail and instruct you to inspect the brake hoses. MCI will supply replacement parts and advise owners to replace any hoses that are leaking or damaged.

On certain motor coaches, the left-rear side window may not be properly attached. This could cause the window to separate from the vehicle.

If the window separates, it could fall and become a hazard for road users and bystanders. This could create a risk of injury and/or a crash.

The company will notify owners by mail. Owners can choose to have the necessary parts and instructions sent to them to complete the repair themselves, or they can take their vehicle(s) to a dealer to inspect the window mounting. The window will be repaired or replaced as necessary and retaining clips will be installed. Note: This recall supersedes recall 2018-171. All vehicles require a new inspection and repair under this recall.

Certain motor coaches equipped with the optional 60 passenger seating arrangement do not conform to the requirements of Canada Motor Vehicle Safety Standard (CMVSS) 217 - Bus Window Retention, Release and Emergency Exits. The motor coaches do not meet the minimum emergency exit requirements of the standard, which could increase the risk of injury in the event of an emergency. Correction: Dealers will install 2 additional emergency exit windows and emergency exit labelling.

A failure of this component (seats and restraints) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain motor coaches, the rear left hand tail lamp harness branch of the engine compartment wiring harness may chafe against the engine coolant tank. If this occurs, the chaffing could damage the wires and cause a loss of power to the left rear tail lamp light, which could decrease vehicle conspicuity and potentially increase the risk of a crash causing injury and/or damage to property. Correction: Dealers will inspect the wiring harness for damage, repair it as necessary and reroute the harness.

A failure of this component (lights and instruments) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain motor coaches, the rear left hand side window is mounted using adhesive and fasteners that may not have been installed correctly during assembly. Under certain circumstances the rear side window could separate from the vehicle and become a hazard that for other road users, increasing the risk of a crash causing injury and/or damage to property. Correction: Dealers will conduct a push out test of all affected windows and replace the ones that fail. Note: This recall is superseded by recall 2019049. Please see recall 2019049 for more information.

A failure of this component (other) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).

On certain vehicles, the instrument panel air gauge connections may have been reversed and may not show the actual air pressure in the primary and secondary air systems. The primary gauge would show secondary system pressure, and the secondary gauge would show primary system pressure. This could be misleading to the driver, potentially increasing the risk of injury and/or damage to property. Correction: Gauge connections will be corrected.

A failure of this component (brakes) may increase the risk of a crash or injury.

Authorized dealerships will inspect the vehicle and complete all necessary repairs free of charge (parts and labor).