Major malfunction
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 34
Likes: 1
2024 E450
Major malfunction
I received my 2025 E450 4 days ago.
I just wanted to take the car for a drive and when I started the car, everything is malfunctioning, active brake assist is not working, SOS inoperative,rear axle steering malfunctioning, pre-safe in operative, active emergency stop assist unavailable, restrained system. Malfunctioning, service required, front airbag not working active blind spot assist and exit warning inoperative.
i’m bringing the car tomorrow for service and we’ll see what they’re saying.
Did this happen to anybody else and what did they do about it?
I just wanted to take the car for a drive and when I started the car, everything is malfunctioning, active brake assist is not working, SOS inoperative,rear axle steering malfunctioning, pre-safe in operative, active emergency stop assist unavailable, restrained system. Malfunctioning, service required, front airbag not working active blind spot assist and exit warning inoperative.
i’m bringing the car tomorrow for service and we’ll see what they’re saying.
Did this happen to anybody else and what did they do about it?
Senior Member
Joined: Jun 2024
Posts: 485
Likes: 156
From: DFW Texas
GL450, E450, Porsche 718 GTS
I received my 2025 E450 4 days ago.
I just wanted to take the car for a drive and when I started the car, everything is malfunctioning, active brake assist is not working, SOS inoperative,rear axle steering malfunctioning, pre-safe in operative, active emergency stop assist unavailable, restrained system. Malfunctioning, service required, front airbag not working active blind spot assist and exit warning inoperative.
i’m bringing the car tomorrow for service and we’ll see what they’re saying.
Did this happen to anybody else and what did they do about it?
I just wanted to take the car for a drive and when I started the car, everything is malfunctioning, active brake assist is not working, SOS inoperative,rear axle steering malfunctioning, pre-safe in operative, active emergency stop assist unavailable, restrained system. Malfunctioning, service required, front airbag not working active blind spot assist and exit warning inoperative.
i’m bringing the car tomorrow for service and we’ll see what they’re saying.
Did this happen to anybody else and what did they do about it?
Super Member
Joined: Sep 2016
Posts: 765
Likes: 289
From: Los Angeles
2024 GLE63s, 2021 E63s, 2018 GLC43
Just reported here
https://mbworld.org/forums/e-class-w...ions-w214.html
https://mbworld.org/forums/e-class-w...ions-w214.html
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 34
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2024 E450
MBWorld Fanatic!
Joined: Aug 2014
Posts: 1,912
Likes: 667
From: Tennessee
W214 E450
Sometimes that is the better choice. On the other hand, if it does happen again, knowing how to fix it or at least do a workaround to get you moving could be the difference of being stranded for hours verses getting back on your way.
Thread Starter
Junior Member
Joined: Mar 2024
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2024 E450
I brought it today to the service department.They think it just needs a software update.Let’s see.
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Member
Joined: Nov 2012
Posts: 214
Likes: 45
From: New York
2025 E450 Sedan: 2019 E450 Coupe
Wolf, why were you suggesting the battery in the trunk. That is the 48V battery, and does not run any of the car features, they are all handled by the 12V battery in the engine compartment. Just wondering, thanks.
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Member
Joined: Sep 2024
Posts: 113
Likes: 17
W214 E350
It seems that the main reason he is suggesting it is because if you view a similar topic on this matter at: https://mbworld.org/forums/e-class-w...ions-w214.html
You will see that a user with a W214 who had similar issues called Mercedes Roadside disconnected the trunk auxiliary battery for 2 minutes, and all the warnings/malfunctions went away until they got it serviced. It seems to be a temporary fix for the issue, however I cannot confirm personally.
Quoting the user he said: "The Mercedes Roadside Assistance just left. Apparently my car was the 3rd car that had the same issues in Dubai today. They are blaming a software update (although I can’t really see if there was an update in the recent days).
They disconnected the battery in the trunk, waited two minutes, reconnected the battery and all the error messages are gone and the car is driving."
You will see that a user with a W214 who had similar issues called Mercedes Roadside disconnected the trunk auxiliary battery for 2 minutes, and all the warnings/malfunctions went away until they got it serviced. It seems to be a temporary fix for the issue, however I cannot confirm personally.
Quoting the user he said: "The Mercedes Roadside Assistance just left. Apparently my car was the 3rd car that had the same issues in Dubai today. They are blaming a software update (although I can’t really see if there was an update in the recent days).
They disconnected the battery in the trunk, waited two minutes, reconnected the battery and all the error messages are gone and the car is driving."
MBWorld Fanatic!
Joined: Aug 2014
Posts: 1,912
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From: Tennessee
W214 E450
"They disconnected the battery in the trunk, waited two minutes, reconnected the battery and all the error messages are gone and the car is driving."
I also thought that the battery in the trunk is the 48V, but it's actually the 12V. Says so right on the battery.
Only the negative is accessible through the panel however there is a positive access terminal under the hood for the 12V. I'm not sure where the 48V battery is. Likely not very accessible without some disassembly.
Member
Joined: Nov 2012
Posts: 214
Likes: 45
From: New York
2025 E450 Sedan: 2019 E450 Coupe
Wolf, you are correct. I thought that location was the 48 volt battery. I looked under the hood where the battery has been for the W212 & W213, and it looks like the 48 volt may be there.
MBWorld Fanatic!
Joined: Aug 2014
Posts: 1,912
Likes: 667
From: Tennessee
W214 E450
If you are talking about the red terminal under the plastic on the back left as you are looking under the hood then that appears to be 12V as well. The red slider to expose the terminal has 12V stamped on it. It appears to be where you can clamp jumper cables on the battery that is in the trunk.
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GLE 580
Here's the rescue card:
https://rk.mb-qr.com/en/214.061/
Here's the 213:
https://rk.mb-qr.com/en/213.0/
https://rk.mb-qr.com/en/214.061/
Here's the 213:
https://rk.mb-qr.com/en/213.0/
Last edited by wildta; Oct 13, 2024 at 12:58 PM.
MBWorld Fanatic!
Joined: Aug 2014
Posts: 1,912
Likes: 667
From: Tennessee
W214 E450
Here's the rescue card:
https://rk.mb-qr.com/en/214.061/
Here's the 213:
https://rk.mb-qr.com/en/213.0/
https://rk.mb-qr.com/en/214.061/
Here's the 213:
https://rk.mb-qr.com/en/213.0/
MBWorld Fanatic!
Joined: Jan 2023
Posts: 3,126
Likes: 1,203
GLE 580
I remember pulling that up for my car and seeing the battery location but when looking yesterday, the 12V is stamped under the hood right where the 48V is shown on the diagram. I'm guessing it's a remote terminal for the 12V in the trunk and that the 48V is under that but haven't dug deeper to see.
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 34
Likes: 1
2024 E450
Service got back to me and told me that the module that controls all the emergency lights on the dashboard and the items that they show is defective.The problem is that they do not have another module in the whole United States and they ordered it from Germany, not sure yet when it will arrive.I will keep updating as I get more information.
MBWorld Fanatic!
Joined: Aug 2014
Posts: 1,912
Likes: 667
From: Tennessee
W214 E450
Service got back to me and told me that the module that controls all the emergency lights on the dashboard and the items that they show is defective.The problem is that they do not have another module in the whole United States and they ordered it from Germany, not sure yet when it will arrive.I will keep updating as I get more information.
Member
Joined: Sep 2012
Posts: 151
Likes: 16
From: Laguna Beach, CA
2024 E 350
Just wondering if you could have returned the car under the lemon law and get a replacement instead of waiting for your car to be repaired. After all you paid for the car but not able to use it.....
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 34
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2024 E450
yes, I could return the car and get the full payment back.It looks like the part has been actually shipped from Germany via FedEx and hopefully should be at the dealership by early next week so I’m holding off the return of the car as of now.
Thread Starter
Junior Member
Joined: Mar 2024
Posts: 34
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2024 E450
Update,Mercedes Service figured out that the module that controls all the lights was defective.Unfortunately, there were no module available in the United States so they ordered one from Germany.I took a while to get it in but now it’s fixed and the car seems to be fine.Hopefully the end of the problem.Otherwise, the car is great.
Member
Joined: Sep 2012
Posts: 151
Likes: 16
From: Laguna Beach, CA
2024 E 350
Thank you for the update! Usually I try not to buy the first release of the new model as it always have things that haven't been ironed out. Hopefully everything that could go wrong have already been fixed on your car and mine....
