Mercedes-Benz GLS

Issue: 
On certain vehicles, the bolt for the 48 V ground connection under the passenger seat may not have been tightened properly. As a result, the wiring could overheat and melt. 

Safety Risk: 
Wiring that overheats and melts can create the risk of a fire. 

Corrective Actions: 
Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to inspect and, if necessary, tighten the ground connection.

Issue: 
Under certain conditions, a software problem could cause the engine to stall during a downshift. As a result, there could be a sudden loss of power to the wheels.  
Note: This recall only affects vehicles equipped with a V6 engine and a 9-speed automatic transmission.  
 
Safety Risk: 
A sudden loss of power to the wheels could increase the risk of a crash.  
 
Corrective Actions: 
Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to update the transmission control unit software.

Issue: 
On certain vehicles, the fuel delivery module could fail. If this happens, the engine may run rough or may not start. This could also result in a sudden loss of engine power while driving. 
Note: This is an expansion of Transport Canada recall 2023-353. 

Safety Risk: 
A sudden loss of engine power could increase the risk of a crash. 

Corrective Actions: 
Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to replace the fuel delivery module.

Issue: 
On certain vehicles, the fuel delivery module could fail. If this happens, the engine may run rough or may not start. This could also result in a sudden loss of engine power while driving. 

Safety Risk: 
A sudden loss of engine power could increase the risk of a crash. 

Corrective Actions: 
Mercedes-Benz will notify owners by mail and advise you to take your vehicle to a dealership to replace the fuel delivery module.

Issue: 
On certain vehicles, the air conditioning drain hose might be installed incorrectly. This could allow water to leak inside the vehicle. If this happens, electrical components could short circuit. This could affect different parts, such as the door locks and emergency call (eCall) system. It could also result in reduced engine power or cause the vehicle not to start. 
Note: If this issue is present in your vehicle, you might notice wet carpets in the driver or passenger footwell and fogged windows. This is an expansion of Transport Canada Recall 2021-247. 

Safety Risk: 
A loss of engine power could increase the risk of a crash. If the doors cannot be unlocked in an emergency situation, it may be difficult to exit the vehicle. 

Corrective Actions: 
Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to inspect how the air conditioning hose is installed and correct it, if necessary. Mercedes-Benz recommends that you should not use the air conditioning until the vehicle is inspected.