48v Battery Malfunction
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
The first time in May my car was towed in on Monday and I had it back on Friday. I believe the dealer had its hands on a new battery within two days. The second time in June, it took nine days to get the car back, so I'm guessing it took about a week for them to get a battery.
Junior Member
Joined: Jul 2021
Posts: 60
Likes: 6
GLS 450 2021
The first time in May my car was towed in on Monday and I had it back on Friday. I believe the dealer had its hands on a new battery within two days. The second time in June, it took nine days to get the car back, so I'm guessing it took about a week for them to get a battery.
Newbie
Joined: Dec 2021
Posts: 12
Likes: 3
GLS450
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
Nothing, really. The first battery saw a total of 196 miles (no doubt it was already sapped when it came off the boat) and the second a total of 535 miles. I'm well over 3,000 miles on the third battery but frankly I've changed plans to take a north coast to south coast road trip, and opted to fly instead because I haven't gotten my confidence back. I tried to push my dealer into giving me the battery with the new part number the last time to no avail. They said they had to install what MB sent them, and that was the old part number. I'm hoping that my present battery isn't one of the "bad batch" and that the software updates my dealer did will keep me running for a long time. But you know that Peanuts cartoon where Lucy is holding the football for Charlie Brown to kick, with that "you can trust me this time" look on her face?
Last edited by Longroof45; Dec 2, 2021 at 06:52 PM.
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
My dealer did that but that didn't fix anything.
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
Nothing, really. The first battery saw a total of 196 miles (no doubt it was already sapped when it came off the boat) and the second a total of 535 miles. I'm well over 3,000 miles on the third battery but frankly I've changed plans to take a north coast to south coast road trip, and opted to fly instead because I haven't gotten my confidence back. I tried to push my dealer into giving me the battery with the new part number the last time to no avail. They said they had to install what MB sent them, and that was the old part number. I'm hoping that my present battery isn't one of the "bad batch" and that the software updates my dealer did will keep me running for a long time. But you know that Peanuts cartoon where Lucy is holding the football for Charlie Brown to kick, with that "you can trust me this time" look on her face?
Newbie
Joined: Dec 2021
Posts: 12
Likes: 3
GLS450
Just curious, those with the 48v issue on the battery. What’s your driving habits like? Slow and steady, aggressive, light footed?
I know on my NSX if I plan to not drive the car for a few days I’ll throw it in sport+ to charge the battery before I park it. It does show me when it’s charging and when it’s being depleted also. But driving habit plays a huge role in how that battery charges/depletes.
So far on my GLS450 I have no issues, I do drive it spiritedly though cause I shoulda bought a 580/63 instead lol
I know on my NSX if I plan to not drive the car for a few days I’ll throw it in sport+ to charge the battery before I park it. It does show me when it’s charging and when it’s being depleted also. But driving habit plays a huge role in how that battery charges/depletes.
So far on my GLS450 I have no issues, I do drive it spiritedly though cause I shoulda bought a 580/63 instead lol
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Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
Newbie
Joined: Dec 2021
Posts: 3
Likes: 0
From: Keene, NH 03431
2020 GLE 450
48 v battery malfunction in a new GLE 450
Seasons' Greeting! I am reporting this issue (48v battery malfunction) that happened with my 2020 GLS 450. It has almost 12k miles on it.
What to do?
I am in western New Hampshire.
What to do?
What to do?
I am in western New Hampshire.
What to do?
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
Super Member
Joined: Dec 2013
Posts: 630
Likes: 177
From: SW Ontario Canada
2020 GLS580, 2023 Corvette Z06
Report to NHSTA
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
Most of the reported 48v battery issues have been on MY2021 vehicles. There have been very few on MY2020 and my recollection is that at least some of those have only required a software update. I hope that's all you require.
Junior Member
Joined: Apr 2014
Posts: 34
Likes: 10
From: Irvine, CA
!90 E 1984, 300D 1984, 300SD 1986, 300TD 1988, 400SE 1990, 500CL 1995, GL350 2012, GLS580 2020, 2025
gls580 24 volt battery
Cheers
Junior Member
Joined: Nov 2019
Posts: 54
Likes: 7
GLS
Round 2!
Well I had the 48v malfunction in July, towed to the the dealer and I was there for 3 weeks.
WELL, IT JUST HAPPENED AGAIN!!!
my service advisor said that MB really doesn’t have a fix yet and are shooting at straws trying to find a permanent fix.
not sure what to do. The last time MB send an engineer and his remedy was to sand down all the battery connections. They also offered an additional 1yr warranty or $3k off a new one. Not very comforting. Not sure what to do.
WELL, IT JUST HAPPENED AGAIN!!!
my service advisor said that MB really doesn’t have a fix yet and are shooting at straws trying to find a permanent fix.
not sure what to do. The last time MB send an engineer and his remedy was to sand down all the battery connections. They also offered an additional 1yr warranty or $3k off a new one. Not very comforting. Not sure what to do.
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
Well I had the 48v malfunction in July, towed to the the dealer and I was there for 3 weeks.
WELL, IT JUST HAPPENED AGAIN!!!
my service advisor said that MB really doesn’t have a fix yet and are shooting at straws trying to find a permanent fix.
not sure what to do. The last time MB send an engineer and his remedy was to sand down all the battery connections. They also offered an additional 1yr warranty or $3k off a new one. Not very comforting. Not sure what to do.
WELL, IT JUST HAPPENED AGAIN!!!
my service advisor said that MB really doesn’t have a fix yet and are shooting at straws trying to find a permanent fix.
not sure what to do. The last time MB send an engineer and his remedy was to sand down all the battery connections. They also offered an additional 1yr warranty or $3k off a new one. Not very comforting. Not sure what to do.
Junior Member
Joined: Nov 2019
Posts: 54
Likes: 7
GLS
Junior Member
Joined: Nov 2019
Posts: 54
Likes: 7
GLS
It happened to me at 23k miles. Dealer had it for 15 days and there is no real solution from MBUSA. If fact, MBUSA acted as if it’s not an issue even though they have a bulletin out with 3 possible fixes…. I use the word possible as most of the cars that had these “fixes” had the issue repeatedly occur afterwards.
MBUSA offer me $3k towards a new car or an additional year of warranty as compensation.
Funny though, they say all the posts on the forum is not to believed and just chatter!
MBUSA offer me $3k towards a new car or an additional year of warranty as compensation.
Funny though, they say all the posts on the forum is not to believed and just chatter!
WELL, IT JUST HAPPENED AGAIN!!!
my service advisor said that MB really doesn’t have a fix yet and are shooting at straws trying to find a permanent fix.
not sure what to do. The last time MB send an engineer and his remedy was to sand down all the battery connections. Not sure what to do.
MBWorld Fanatic!
Joined: Jun 2017
Posts: 1,352
Likes: 776
2020 GLS450 (wife) / 2024 Ford Bronco (mine) / 2014 VW Tiquan (son)
I had the 48v malfunction in July, towed to the the dealer and It was there for 2 weeks.
WELL, IT JUST HAPPENED AGAIN!!!
my service advisor said that MB really doesn’t have a fix yet and are shooting at straws trying to find a permanent fix.
not sure what to do. The last time MB send an engineer and his remedy was to sand down all the battery connections. Not sure what to do.
WELL, IT JUST HAPPENED AGAIN!!!
my service advisor said that MB really doesn’t have a fix yet and are shooting at straws trying to find a permanent fix.
not sure what to do. The last time MB send an engineer and his remedy was to sand down all the battery connections. Not sure what to do.
trusting the comments of a MB dealer service advisor, is on par with assuming the Amazon delivery driver knows the engineering specs of the Blue Origin space rocket.
Senior Member
Joined: May 2021
Posts: 338
Likes: 101
From: Shaker Heights, Ohio
2021 E450 All Terrain Wagon
did they actually replace the battery last time? That seems to be a general fix for many. Or did they just tinker with the connectors?
trusting the comments of a MB dealer service advisor, is on par with assuming the Amazon delivery driver knows the engineering specs of the Blue Origin space rocket.
trusting the comments of a MB dealer service advisor, is on par with assuming the Amazon delivery driver knows the engineering specs of the Blue Origin space rocket.
