Same dealership, similar response.
Thread Starter
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Joined: Sep 2022
Posts: 119
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From: Central Washington
I wanted to show the SA a screen shot of the battery state of charge in an attempt to get the battery warrantied. Keep in mind new 2024, purchased March 5, 2025, build date Nov 2023, 1100 miles. I just got off the phone with the SA and he told me Mercedes doesn’t warranty batteries. He’s going to talk to his supervisor. Although, I didn’t purchase the car from this dealer I did buy my wife’s 2024 GLE450 from them as well as a couple of other MB’s in years past. Plus we do most of our service work there.
MBWorld God!
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not sure why you are not able to get into workshop menu.
MBWorld God!
Joined: Dec 2019
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Likes: 6,347
MBWorld God!
Joined: Dec 2019
Posts: 32,505
Likes: 6,347
I wanted to show the SA a screen shot of the battery state of charge in an attempt to get the battery warrantied. Keep in mind new 2024, purchased March 5, 2025, build date Nov 2023, 1100 miles. I just got off the phone with the SA and he told me Mercedes doesn’t warranty batteries. He’s going to talk to his supervisor. Although, I didn’t purchase the car from this dealer I did buy my wife’s 2024 GLE450 from them as well as a couple of other MB’s in years past. Plus we do most of our service work there.
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Joined: Apr 2025
Posts: 96
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From: Boston area, MA
2021 S580
My ’21 S580 (I’ve had it a year now) kept indicating “partially charged” on the Mercedes Me app—rarely did it indicate battery fully charged, and the car would not go into standby mode indicating “Battery charge insufficient for activating standby mode”.
Brought it to the dealer several times and they said the battery tested fine, questioned how I drove the car, short trips or long trips, and concluded it likely just needed the battery software update. Prior to this, I thought it might be the key fob interacting with the car all the time and draining the battery, so I tried a Faraday box—I actually tested the Faraday box as well—and I was able to get into the service menu check and the charge level, which looked to be fine.
After I gave the dealership 3/5 stars on a review, the service manager amazingly offered to replace the battery. The new battery is now always charged on Mercedes Me, I can put the car in standby mode anytime I wish with 20+ weeks, and my Faraday box is in the closet now. Everything is perfect. Even when I might be parked in the car, listening to music, fiddling with MBUX and running the battery down for an hour+…by the time I drive home (20 min), I’m fully charged. Every time. No question.
My recommendation would be to simply replace the battery. I would have done it a lot earlier if I had only known…warranty or no warranty…they aren’t that expensive. In retrospect, I probably should have taken a ride to my local independent German auto repair garage, buy a battery from him, and struck up a little conversation as it might be nice to have someone besides a dealer available to perform any future repairs I might need (I’m thinking of those expensive brakes
)
Brought it to the dealer several times and they said the battery tested fine, questioned how I drove the car, short trips or long trips, and concluded it likely just needed the battery software update. Prior to this, I thought it might be the key fob interacting with the car all the time and draining the battery, so I tried a Faraday box—I actually tested the Faraday box as well—and I was able to get into the service menu check and the charge level, which looked to be fine.
After I gave the dealership 3/5 stars on a review, the service manager amazingly offered to replace the battery. The new battery is now always charged on Mercedes Me, I can put the car in standby mode anytime I wish with 20+ weeks, and my Faraday box is in the closet now. Everything is perfect. Even when I might be parked in the car, listening to music, fiddling with MBUX and running the battery down for an hour+…by the time I drive home (20 min), I’m fully charged. Every time. No question.
My recommendation would be to simply replace the battery. I would have done it a lot earlier if I had only known…warranty or no warranty…they aren’t that expensive. In retrospect, I probably should have taken a ride to my local independent German auto repair garage, buy a battery from him, and struck up a little conversation as it might be nice to have someone besides a dealer available to perform any future repairs I might need (I’m thinking of those expensive brakes
)
MBWorld God!
Joined: Dec 2019
Posts: 32,505
Likes: 6,347
My ’21 S580 (I’ve had it a year now) kept indicating “partially charged” on the Mercedes Me app—rarely did it indicate battery fully charged, and the car would not go into standby mode indicating “Battery charge insufficient for activating standby mode”.
Brought it to the dealer several times and they said the battery tested fine, questioned how I drove the car, short trips or long trips, and concluded it likely just needed the battery software update. Prior to this, I thought it might be the key fob interacting with the car all the time and draining the battery, so I tried a Faraday box—I actually tested the Faraday box as well—and I was able to get into the service menu check and the charge level, which looked to be fine.
After I gave the dealership 3/5 stars on a review, the service manager amazingly offered to replace the battery. The new battery is now always charged on Mercedes Me, I can put the car in standby mode anytime I wish with 20+ weeks, and my Faraday box is in the closet now. Everything is perfect. Even when I might be parked in the car, listening to music, fiddling with MBUX and running the battery down for an hour+…by the time I drive home (20 min), I’m fully charged. Every time. No question.
My recommendation would be to simply replace the battery. I would have done it a lot earlier if I had only known…warranty or no warranty…they aren’t that expensive. In retrospect, I probably should have taken a ride to my local independent German auto repair garage, buy a battery from him, and struck up a little conversation as it might be nice to have someone besides a dealer available to perform any future repairs I might need (I’m thinking of those expensive brakes)
Brought it to the dealer several times and they said the battery tested fine, questioned how I drove the car, short trips or long trips, and concluded it likely just needed the battery software update. Prior to this, I thought it might be the key fob interacting with the car all the time and draining the battery, so I tried a Faraday box—I actually tested the Faraday box as well—and I was able to get into the service menu check and the charge level, which looked to be fine.
After I gave the dealership 3/5 stars on a review, the service manager amazingly offered to replace the battery. The new battery is now always charged on Mercedes Me, I can put the car in standby mode anytime I wish with 20+ weeks, and my Faraday box is in the closet now. Everything is perfect. Even when I might be parked in the car, listening to music, fiddling with MBUX and running the battery down for an hour+…by the time I drive home (20 min), I’m fully charged. Every time. No question.
My recommendation would be to simply replace the battery. I would have done it a lot earlier if I had only known…warranty or no warranty…they aren’t that expensive. In retrospect, I probably should have taken a ride to my local independent German auto repair garage, buy a battery from him, and struck up a little conversation as it might be nice to have someone besides a dealer available to perform any future repairs I might need (I’m thinking of those expensive brakes
)
Thread Starter
Member
Joined: Sep 2022
Posts: 119
Likes: 50
From: Central Washington
This is how to check the 48V battery charge level: https://mbworld.org/forums/glb-class...rge-level.html
Please report back your findings (level).
You can also check your 12V battery charge level in that menu, report that info back as well.
Please report back your findings (level).
You can also check your 12V battery charge level in that menu, report that info back as well.
Finally, got the workshop menu. I found that I was hesitating between the Home button and the O K button. A sense of urgency is required. I consider myself deliberate my wife prefers slow.
I’ve attached photos of the 12 volt and 48 volt data screens.
The screens above show the data after a short drive.
At idle after a short drive.
At idle upon start.
Data screens when workshop menu first accessed.
My untrained mind suggests that things don’t look to bad, but what do l know? When I put it in standby after the short drive(approximately 45 minutes in city traffic) it only measured my status as good for 5 weeks.
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https://cimg4.ibsrv.net/gimg/www.mbworld.org-vbulletin/2000x1504/img_0257_0a3729f1d1963399af3823a6efe02a644184ce76. jpeg
Finally, got the workshop menu. I found that I was hesitating between the Home button and the O K button. A sense of urgency is required. I consider myself deliberate my wife prefers slow.
I’ve attached photos of the 12 volt and 48 volt data screens.
https://cimg5.ibsrv.net/gimg/www.mbw...59d78aea4.jpeg
https://cimg2.ibsrv.net/gimg/www.mbw...6448b2487.jpeg
The screens above show the data after a short drive.
https://cimg0.ibsrv.net/gimg/www.mbw...b843b21f9.jpeg
https://cimg9.ibsrv.net/gimg/www.mbw...43e6105c6.jpeg
At idle after a short drive.
https://cimg8.ibsrv.net/gimg/www.mbw...6ae5286ac.jpeg
https://cimg7.ibsrv.net/gimg/www.mbw...6efe649d6.jpeg
At idle upon start.
https://cimg3.ibsrv.net/gimg/www.mbw...51eddf9cf.jpeg
https://cimg2.ibsrv.net/gimg/www.mbw...3e71ae079.jpeg
Data screens when workshop menu first accessed.
My untrained mind suggests that things don’t look to bad, but what do l know? When I put it in standby after the short drive(approximately 45 minutes in city traffic) it only measured my status as good for 5 weeks.
Finally, got the workshop menu. I found that I was hesitating between the Home button and the O K button. A sense of urgency is required. I consider myself deliberate my wife prefers slow.
I’ve attached photos of the 12 volt and 48 volt data screens.
https://cimg5.ibsrv.net/gimg/www.mbw...59d78aea4.jpeg
https://cimg2.ibsrv.net/gimg/www.mbw...6448b2487.jpeg
The screens above show the data after a short drive.
https://cimg0.ibsrv.net/gimg/www.mbw...b843b21f9.jpeg
https://cimg9.ibsrv.net/gimg/www.mbw...43e6105c6.jpeg
At idle after a short drive.
https://cimg8.ibsrv.net/gimg/www.mbw...6ae5286ac.jpeg
https://cimg7.ibsrv.net/gimg/www.mbw...6efe649d6.jpeg
At idle upon start.
https://cimg3.ibsrv.net/gimg/www.mbw...51eddf9cf.jpeg
https://cimg2.ibsrv.net/gimg/www.mbw...3e71ae079.jpeg
Data screens when workshop menu first accessed.
My untrained mind suggests that things don’t look to bad, but what do l know? When I put it in standby after the short drive(approximately 45 minutes in city traffic) it only measured my status as good for 5 weeks.
MBWorld God!
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never mind I am replying to an old post, you already successfully entered workshop menu, please ignore the above post, sorry about that!
Thread Starter
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Joined: Sep 2022
Posts: 119
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From: Central Washington
Thank you both for hanging in there with me. If you view the attachments from the bottom up (I should have arranged them in a more logical sequence) the values you referred to improved after my short drive around town. It seems to me that the values should be closer to full charge and the 48 volt battery should be closer to 48 volts rather than at 46 volts. And, the 12volt voltage seems a little low. Any thoughts?
I’m thinking of checking the values this evening and then again after putting it on a charger overnight.
I’m thinking of checking the values this evening and then again after putting it on a charger overnight.
MBWorld God!
Joined: Dec 2019
Posts: 32,505
Likes: 6,347
Thank you both for hanging in there with me. If you view the attachments from the bottom up (I should have arranged them in a more logical sequence) the values you referred to improved after my short drive around town. It seems to me that the values should be closer to full charge and the 48 volt battery should be closer to 48 volts rather than at 46 volts. And, the 12volt voltage seems a little low. Any thoughts?
I’m thinking of checking the values this evening and then again after putting it on a charger overnight.
I’m thinking of checking the values this evening and then again after putting it on a charger overnight.
MBWorld God!
Joined: Dec 2019
Posts: 32,505
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The 48V battery needs to be charged while driving since the vehicle has to charge the 12V and 48V battery at the same time, it takes more time to charge them both, 60 minutes should be good though without turning off and at high speeds.
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Thread Starter
Member
Joined: Sep 2022
Posts: 119
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From: Central Washington
Wife has Dr appointment about an hour away tomorrow. All freeway. I guess I’ll take her in my car. Worst case scenario is I just replace the 12 volt battery at my own expense. Any problem with having a local non Mercedes shop do the installation.
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If you get yourself a copy of those workshop menus, you can even do it yourself, if I recalled correctly, it is straight forward and no programming is necessary as well.
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MBWorld God!
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From: Cincinnati
2010 E350 4Matic
