GLE 63S not starting
I had my 2017 GLE 63S serviced at LI city Merc dealer for an A2 service and rear brake replacement (disc and rotor).
When leaving the shop I noticed my infotainment system wasn’t turning on. They look the car and came back in 20 minutes saying they had to hard reboot. All seemed fine.
Next day, Sunday the fob wouldn’t unlock the car. It wasn’t recognizing the fob at all. I tried to start the car manually but it wasn’t turning over. The instrument cluster had all the warning lights.
Had to call the roadside assistance. After about 30 minutes in the car, I opened the door and the alarm triggered. To turn the alarm off, I manually inserted the key and turned. The car started. All seemed fine. After 10 minutes I felt something turn off so I turned off the car and it wouldn’t start again. Roadside came and left. It wasn’t the battery issue. Had it towed back.
The car is now back at the dealership and starting again. I didn’t want to take the car back until they can diagnose the issue. I have 2 young kids and can’t have an unreliable car.
They had the for a week and keep saying the car is fine. Do I take the car back?
Thank you for your input.
Joe
Last edited by JoefromNYC; Aug 2, 2025 at 08:03 AM.
I had my 2017 GLE 63S serviced at LI city Merc dealer for an A2 service and rear brake replacement (disc and rotor).
When leaving the shop I noticed my infotainment system wasn’t turning on. They look the car and came back in 20 minutes saying they had to hard reboot. All seemed fine.
Next day, Sunday the fob wouldn’t unlock the car. It wasn’t recognizing the fob at all. I tried to start the car manually but it wasn’t turning over. The instrument cluster had all the warning lights.
Had to call the roadside assistance. After about 30 minutes in the car, I opened the door and the alarm triggered. To turn the alarm off, I manually inserted the key and turned. The car started. All seemed fine. After 10 minutes I felt something turn off so I turned off the car and it wouldn’t start again. Roadside came and left. It wasn’t the battery issue. Had it towed back.
The car is now back at the dealership and starting again. I didn’t want to take the car back until they can diagnose the issue. I have 2 young kids and can’t have an unreliable car.
They had the for a week and keep saying the car is fine. Do I take the car back?
Thank you for your input.
Joe








I had my 2017 GLE 63S serviced at LI city Merc dealer for an A2 service and rear brake replacement (disc and rotor).
When leaving the shop I noticed my infotainment system wasn’t turning on. They look the car and came back in 20 minutes saying they had to hard reboot. All seemed fine.
Next day, Sunday the fob wouldn’t unlock the car. It wasn’t recognizing the fob at all. I tried to start the car manually but it wasn’t turning over. The instrument cluster had all the warning lights.
Had to call the roadside assistance. After about 30 minutes in the car, I opened the door and the alarm triggered. To turn the alarm off, I manually inserted the key and turned. The car started. All seemed fine. After 10 minutes I felt something turn off so I turned off the car and it wouldn’t start again. Roadside came and left. It wasn’t the battery issue. Had it towed back.
The car is now back at the dealership and starting again. I didn’t want to take the car back until they can diagnose the issue. I have 2 young kids and can’t have an unreliable car.
They had the for a week and keep saying the car is fine. Do I take the car back?
Thank you for your input.
Joe
This is not unsual CAN-B delays: where you unlock the car and alarm still triggers when opening the door regardless of being disarmed.
Something is actively bugging your chassis-bus besides low-voltage. Another new battery won't cut this but a simple battery disconnect will.
Let the MB specialist diagnose the flaky door modules for a firmware upgrade or something else.

Last edited by CaliBenzDriver; Aug 3, 2025 at 12:48 PM.





