I may have missed a post, Phil. Did they replace the battery as well, or just the software patch?

Hi, they did not change the batteries just software. I do not know what to think but I am keeping my fingers crossed!

Thanks, Phil. Maybe that's a good sign🤞🏼. If they have the right software fix, presumably repairs will be faster and simpler, at least I hope. How long did they have your wagon tied up?

They had my car a week. So far so good... Sorry I missed this

Thank you for these instructions. I went out and tried the steps and it worked. I know that when the tow gets here we can get it out. 😀

glad this helped! hope they fix you the first time

Here is a quick shortcut to get your car in Neutral without the need for a second person...

Simply open the driver door before going through the Neutral gear procedure.

I used to get puzzled watching my new Benz deeply draining my battery....

You'd think by now the A-team had a chance to design a reliable battery management.

Thanks. It sounds like you've been through this drill too many times. Opening the door first certainly sounds logical and as simple as it gets. Now I'm wondering why it was a 2-person job for Roadside both times that I needed to be flatbedded to the dealer. I guess I understand the second time because the car had to be towed quite a distance out of my garage by another car just to reach the flatbed, and one guy steered the car while the other guy drove the tow car. I'm not sure why the Roadside guy didn't just do as you suggest the first time I needed to be taken back to the dealer. Maybe it was just too simple and obvious lol.

I too was wrong. Mine died at 8400 miles. I will say that roadside service was very good. It was a third party but the mechanic said they do all of Benz service and towing in our area. They did have to replace the battery but they first sacred all of my settings so they were not lost. Not a great feeling as the type driver did this is a common problem. Hopefully, this is the extent of problems I wil have.

Meric, what year is your MB?

Sorry I didn't include. It's a 2021

Wow, you have a 2021 S580 and waited 2 hrs.! What was wrong with the car?

Same battery problem at my GLS 63 AMG 2022. The car has 400km (250 miles). It is a new car. The rear left massage seat never worked, and now the battery problem arrived. It happened on the road during driveing. Both screen has red label warning comes up.
I went to the Mercedes service and I have to left the car there.

I will update my post when I know more.

(sorry for my bad english)

Same problem. 2021 E53 AMG bought new in March 2022. Just happened today. Driving along the highway everything going ok then the warning about the battery followed by a warning about over heating. Then it slowly shut down. Waited 10 minutes and started it back up and it was fine. Engine light error still on though. Will take it to the dealer tomorrow.

Adding my experience today to the list of sadness here. We have a 2022 GLE 450 with 1,361 miles total that we took delivery on April 9, 2022 (my wife hasn't been driving it much!).

Today I was about 20 miles into a drive of mostly highway driving when I got a yellow message about the 48v battery, followed immediately by a red "Malfunction" message. Within seconds I lost power and the "Coolant Too Hot Stop Vehicle Turn Engine Off" message appeared.

Unfortunately I was on the highway at highway speed. Fortunately I happened to be in the right lane and was able to get to the shoulder just before a bridge would have meant I was stuck in the right hand lane. I turned the engine off, waited five minutes, turned it back on. The engine info screen showed one temp at maybe 130 with a redline of ~ 240. I believe this is transmission temp? Or maybe coolant temp? The second temp looks like oil and was maybe 220 with a red line of about 275. About 1/2 between the blue and red lines which are presumably low normal vs high normal.

I was able to accelerate from there pretty aggressively back into traffic (thank goodness) and continue on to my destination. I drove back about 25 / 30 miles and neither temp ever got close to the red line.

Called Mercedes service and am waiting on next steps.

Very disappointing. Now my wife is apprehensive about driving it on the highway.

Wow! My wife would be very, very hesitant about driving this car as well. If this happened to her I doubt she would have acted as calmly as you did. If it never happens again she might drive it again. If it happened again, she might never drive the car again.

There should be a computer trail as to what happened and hopefully service will be able to correct the problem.

Yes, indeed there is a trail, its actually a bug-check trace that shop can upload to German helpdesk if they care to escalate this issue beyond free carwash.
Forget MB-USA ... tell your story directly to the service manager and kindly ask them to do you a favor by escalating to German helpdesk.

CYA for 2nd related visit:
Provide your expectations in writing so your demands land on the dealer work order word by word. SA are trained to write extremely vague orders...
If your car wrecks there will be more than insurance and lawyers in the loop.

It's not like MB is totally clueless about this class of power issues .
🤞

ABSOLUTELY ATROCIOUS!!!!! This could have been a disaster under different circumstances. Please keep us all informed as to how MB handles this issue.
Thank you

Update regarding the following issue...

Round one of diagnostics with Mercedes is disappointing to say the least. I'll include the tech's notes below, but the summary is he disconnected the 48v battery, checked for a good ground on the battery and all other connections. All those were fine. Did a road test which went fine. Done.

They now want to give it back without determining any root cause nor fixing anything. I did get an updated service bulletin (LI54.10-P-069698) for this issue. v9 is the latest I can find in this forum / online anywhere. Current version is now 16 which I've attached.

I didn't push on the German Helpdesk idea ... yet. If this happens a second time (and I'm not dead) I will be a lot more aggressive.

FYI there is a class action lawsuit underway for 48v battery issue, but that appears to be more focused on not starting due to 48v issues versus loss of power while driving. That said the firm of course wants as many plaintiffs / class members as possible. Not reaching out them them yet, but sharing the link here if others are interested.

https://thelemonfirm.com/2022/03/21/...ttery-problem/

My wife is already asking if we can sell the SUV. Very bad and incredibly disappointing.

Chris

Thanks for posting.

As you correctly posted, not very encouraging at all. I do not know what I would do, but I would not expect my wife to drive this car. You may have to drive it for a while, and afterwards if everything is fine, then convince her to drive it.

Remember "Happy Wife - Happy Life!"

It's disconcerting to see how amateurish MB corporate is acting.
MB is purposely building these cars with numerous gotchas in every systems then not helping the dealers left in charge of milking scared customers.

The expectations are that barely escaping a wreck should motivate owners to trade in a car ASAP with plenty of resale potential left in it for CPO business.

They are too many design weaknesses that contribute to modules restless chaos. It does not take a rockect scientist to make these cars meet standards.
Mercs can really perform like no other once milking issues are honestly eliminated.

Married 28 years ... totally agree!

Me driving it initially is the plan, but my wife's response was it took 1,300 miles for it to manifest the first time so how do we ever have confidence it won't happen again? Especially given MB hasn't actually done anything. And she's 100% right. Realistically we need to drive it probably 5,000 miles to have reasonable (but not complete) confidence this won't recur. Which isn't realistic so ... 🤬.

And our second vehicle is a F150 which she isn't excited about driving (big for her).

This puts us in a world of hurt.

I’m sorry but, this makes no sense to me. You are stating the MB is purposely building unsafe cars. The last thing that a person that has this issue that they think could kill them is going to do is buy another Mercedes.
Unless you have inside information, MB doesn’t make any money on used cars. The dealers do.
So the dealers and MB are colluding together to sell unsafe cars so people trade them in and dealers make more money?
I’m sorry, but I would have to be pretty stupid to think, I almost died in my Mercedes, I think I’ll trade it in for a new one.
It makes no sense to me. I don’t know the explanation for the problem but, I don’t buy your explanation.

If you ask me this is part of developing a new car. The designers thought it would work but there were glitches. This is part of all new designs. They did not test it enough. It was a bad design and they need time to figure it out and fix it. My dealer claimed it was a software issue but I wonder if that is true. I do not think they did it on purpose the labor and reputation cost is too much. My issue is how they dealt with it. I had to rent a car twice and take time off work. I was not happy… but in most other ways life is good for me so I moved on. I do like my car.

The old adage "Never buy a car in the first year of production" may have to be updated: Never in the 'first TWO years of production!'