2023 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 window trim on the rear doors may not be properly attached. As a result, the window trim could loosen and separate from the vehicle. 
Note: This is an expansion of Transport Canada Recall 2022-509

Safety Risk: 
Window trim that detaches from the vehicle could create a road hazard for others and increase the risk of a crash. 

Corrective Actions: 
Mercedes-Benz will notify owners by mail and instruct you to take your vehicle to a dealership to inspect the window trim on the rear doors and repair them, if necessary.