Recall on 48 Volt Battery Ground Connections
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Senior Member
Joined: Jun 2011
Posts: 356
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2021 GLE 450
Recall on 48 Volt Battery Ground Connections
I'm in Canada. I say that because sometimes information can be different but I doubt it this time.
I just found out this morning there is a letter going out to affected owners about the recall on cars with the 48 volt system. It seems Mercedes has now discovered during the painting process many cars had the ground bolt connection painted which resulted in a poor or no connection when starting. We all knew about this a year ago but there is finally a recall. I talked to the dealer and they said they had been checking all cars that arrived at the dealership with the 48 volt system for ground connections paint issues. If there was paint, it was cleaned and corrected before the car was sold.
They said since they have been doing this for nearly 9 months now, they have not had one car back that wouldn't start.
So, I guess this is good news going forward and hoping Mercedes will correct this ground painting problem.
Such a small thing that has caused so much aggravation for owners who were affected.
I had a new battery part number put in before I took delivery and the grounds were checked and cleaned at that time and I have had no starting problems at all.
Thought I would share this.
Toban
I just found out this morning there is a letter going out to affected owners about the recall on cars with the 48 volt system. It seems Mercedes has now discovered during the painting process many cars had the ground bolt connection painted which resulted in a poor or no connection when starting. We all knew about this a year ago but there is finally a recall. I talked to the dealer and they said they had been checking all cars that arrived at the dealership with the 48 volt system for ground connections paint issues. If there was paint, it was cleaned and corrected before the car was sold.
They said since they have been doing this for nearly 9 months now, they have not had one car back that wouldn't start.
So, I guess this is good news going forward and hoping Mercedes will correct this ground painting problem.
Such a small thing that has caused so much aggravation for owners who were affected.
I had a new battery part number put in before I took delivery and the grounds were checked and cleaned at that time and I have had no starting problems at all.
Thought I would share this.
Toban
Super Member
Joined: Feb 2013
Posts: 533
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From: Pennsylvania
2021 GLE450
It's good to see a formal recall, although it might not be voluntary. Some manufacturers make every effort to handle known issues like this with TSB's, but when/if the issue is determined to be safety-related it falls into the category of recall. I can't speak to Canadian law, but the NHTSA has the authority to force a recall here in the US if the manufacturer doesn't do it voluntarily.
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2014 E350 2020 GLE 450
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Joined: Jul 2003
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From: Lake Oswego, OR
2020 GLE 450; 2023 BMW M2 Coupe
I'm in Canada. I say that because sometimes information can be different but I doubt it this time.
I just found out this morning there is a letter going out to affected owners about the recall on cars with the 48 volt system. It seems Mercedes has now discovered during the painting process many cars had the ground bolt connection painted which resulted in a poor or no connection when starting. We all knew about this a year ago but there is finally a recall. I talked to the dealer and they said they had been checking all cars that arrived at the dealership with the 48 volt system for ground connections paint issues. If there was paint, it was cleaned and corrected before the car was sold.
Toban
I just found out this morning there is a letter going out to affected owners about the recall on cars with the 48 volt system. It seems Mercedes has now discovered during the painting process many cars had the ground bolt connection painted which resulted in a poor or no connection when starting. We all knew about this a year ago but there is finally a recall. I talked to the dealer and they said they had been checking all cars that arrived at the dealership with the 48 volt system for ground connections paint issues. If there was paint, it was cleaned and corrected before the car was sold.
Toban
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Joined: May 2020
Posts: 2,838
Likes: 1,601
From: Florida
Seems to not only be Mercedes, Audi has a TSB for 48V vehicles dying ranging from MY19-22. BMW has also recently adopted the 48V system and has had a few new X7’s with dying batteries/systems.
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