EQS SUV 2nd 20K mile service - DIY style
Thread Starter
MBWorld Fanatic!
Joined: May 2005
Posts: 1,439
Likes: 540
From: Philadelphia, PA (USA)
2025 E53 Hybrid
And this has apparently happened to me.
I took the car to the MB dealer here for service. Left it for the day with a service order to perform A2 service.
Picked it up at the end of the day and was told by the dealer that A2 service was not performed as the computer (and the car) said it was not due for a couple more months.
The next day, I received a call from the workshop that A2 service needed to be performed after all. And the confusion was something to do with communication module in the car and communicating with the back end (not sure if this is the MB's back end or the dealer's or workshop computer).
I brought the car back in the following week.
A few days ago, I made an inquiry to MB Sweden about the guarantee on the HV battery, just to confirm my understanding of the language there -- even though I'm having no trouble with my HV battery.
I received a response from MB Sweden that shocked me. They said the remainder of my HV battery warranty (i.e. about 8 years) was invalidated due to a gap in the service schedule.
Wow! This certainly wasn't expected!! The gap exists only because the dealer did not perform the A2 service when I left the car for service, as that was one day before the 2 year threshold.
I have asked MB to look into this further, as the "gap" is through no fault of my own.
I am only writing about this here to underscore for others the importance of making sure you don't miss ANY thresholds -- mileage or calendar.
I took the car to the MB dealer here for service. Left it for the day with a service order to perform A2 service.
Picked it up at the end of the day and was told by the dealer that A2 service was not performed as the computer (and the car) said it was not due for a couple more months.
The next day, I received a call from the workshop that A2 service needed to be performed after all. And the confusion was something to do with communication module in the car and communicating with the back end (not sure if this is the MB's back end or the dealer's or workshop computer).
I brought the car back in the following week.
A few days ago, I made an inquiry to MB Sweden about the guarantee on the HV battery, just to confirm my understanding of the language there -- even though I'm having no trouble with my HV battery.
I received a response from MB Sweden that shocked me. They said the remainder of my HV battery warranty (i.e. about 8 years) was invalidated due to a gap in the service schedule.
Wow! This certainly wasn't expected!! The gap exists only because the dealer did not perform the A2 service when I left the car for service, as that was one day before the 2 year threshold.
I have asked MB to look into this further, as the "gap" is through no fault of my own.
I am only writing about this here to underscore for others the importance of making sure you don't miss ANY thresholds -- mileage or calendar.
Super Member
Joined: Dec 2022
Posts: 750
Likes: 225
From: Sweden
2023 EQE SUV 500 4Matic
I believe I have read that A2 does include checking HV battery connections, for example.
Thread Starter
MBWorld Fanatic!
Joined: May 2005
Posts: 1,439
Likes: 540
From: Philadelphia, PA (USA)
2025 E53 Hybrid
I believe for Mercedes-Benz to deny a battery warranty claim they would have to prove that the one week delay in performing the A2 service caused the failure. And since the dealer did not detect any problems with the HV battery when the service was performed I don't think MB has a good case for invalidating the warranty.
Super Member
Joined: Dec 2022
Posts: 750
Likes: 225
From: Sweden
2023 EQE SUV 500 4Matic
And this has apparently happened to me.
I took the car to the MB dealer here for service. Left it for the day with a service order to perform A2 service.
Picked it up at the end of the day and was told by the dealer that A2 service was not performed as the computer (and the car) said it was not due for a couple more months.
The next day, I received a call from the workshop that A2 service needed to be performed after all. And the confusion was something to do with communication module in the car and communicating with the back end (not sure if this is the MB's back end or the dealer's or workshop computer).
I brought the car back in the following week.
A few days ago, I made an inquiry to MB Sweden about the guarantee on the HV battery, just to confirm my understanding of the language there -- even though I'm having no trouble with my HV battery.
I received a response from MB Sweden that shocked me. They said the remainder of my HV battery warranty (i.e. about 8 years) was invalidated due to a gap in the service schedule.
Wow! This certainly wasn't expected!! The gap exists only because the dealer did not perform the A2 service when I left the car for service, as that was one day before the 2 year threshold.
I have asked MB to look into this further, as the "gap" is through no fault of my own.
I am only writing about this here to underscore for others the importance of making sure you don't miss ANY thresholds -- mileage or calendar.
I took the car to the MB dealer here for service. Left it for the day with a service order to perform A2 service.
Picked it up at the end of the day and was told by the dealer that A2 service was not performed as the computer (and the car) said it was not due for a couple more months.
The next day, I received a call from the workshop that A2 service needed to be performed after all. And the confusion was something to do with communication module in the car and communicating with the back end (not sure if this is the MB's back end or the dealer's or workshop computer).
I brought the car back in the following week.
A few days ago, I made an inquiry to MB Sweden about the guarantee on the HV battery, just to confirm my understanding of the language there -- even though I'm having no trouble with my HV battery.
I received a response from MB Sweden that shocked me. They said the remainder of my HV battery warranty (i.e. about 8 years) was invalidated due to a gap in the service schedule.
Wow! This certainly wasn't expected!! The gap exists only because the dealer did not perform the A2 service when I left the car for service, as that was one day before the 2 year threshold.
I have asked MB to look into this further, as the "gap" is through no fault of my own.
I am only writing about this here to underscore for others the importance of making sure you don't miss ANY thresholds -- mileage or calendar.
Member
Joined: Oct 2010
Posts: 220
Likes: 71
From: Alabama
2023 X296 EQS 580 SUV / 2018 991.2 Cabriolet
I believe for Mercedes-Benz to deny a battery warranty claim they would have to prove that the one week delay in performing the A2 service caused the failure. And since the dealer did not detect any problems with the HV battery when the service was performed I don't think MB has a good case for invalidating the warranty.
MBWorld Fanatic!
Joined: Feb 2017
Posts: 2,297
Likes: 1,205
From: Baltimore County, MD
'13 s212 63 p30. '06 LX470
Correct. this is only a US thing and is the overarching law regarding denial of warranty and limits of liability. BUT im not an EQ owner and have not read the manual, though the manual does not supersede the law...also not a lawyer but after dealing with enough technical law in my life, Magnuson is one to learn of youre a car person.
Senior Member
Joined: Mar 2024
Posts: 349
Likes: 138
From: California
2024 EQE Sedan
Recently completed my 2nd 20k service. Skipped brake fluid flush and wiper blade replacement. Cost a little over $300 at the dealership even with a complimentary loaner. There is no need to waste money on this, it's an electric car. Call around, get the best rate, then tell them what you actually need. Else they'll price it like a gas car and sell you every unnecessary thing.
Junior Member
Joined: Mar 2025
Posts: 31
Likes: 14
EQS 450+ SUV 2024
Brake fluid flush is probably the one thing you should not skip. Brake fluid is hydrophilic and will pull water out of the air over time, especially the DOT-4 used in the EQ series, so needs to be replaced periodically. I suspect the issue is more serious with EVs as the friction brakes are not used much so the fluid does not heat to drive off water that has accumulated. Honestly, I think DOT-3 would have been a better choice; while it does not have the temperature range of DOT-4, with regenerative braking you are unlikely to ever get the friction brakes very hot. You do not want water in the brake fluid because it promotes rust of the components and can reduce brake effectiveness in heavy braking (e.g. emergency stops).
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Senior Member
Joined: Mar 2024
Posts: 349
Likes: 138
From: California
2024 EQE Sedan
I see, I was under the impression you were skipping the brake flush entirely. If you are doing it a bit more rapidly due to your conditions, and did not need it on the normal schedule, that works fine. I am concerned that people reading your post would think you can skip the flush entirely. You cannot, there are good reasons MB recommends the periodic flush.
Super Member
Joined: Aug 2007
Posts: 876
Likes: 81
From: Phoenix AZ & Cayucos CA
’27 AMG SL55(ordered), ‘23 EQS 580 SUV, ‘19 AMG E53 Cpe, ‘48 Willys Jeepster
Oh yeah, it’s fun having the brake pedal go to the floor when you kind of want it not to. Used to bleed the brakes before every track day but still had it happen from time to time, but ‘80s-era brakes were not stellar compared to the massive discs and calipers on our cars.
Senior Member
Joined: Mar 2024
Posts: 349
Likes: 138
From: California
2024 EQE Sedan
I had a car where the power assist would randomly cut out one time every couple of months. I would have to press the brake pedal with everything I had to get the car to stop, and never could manage to depress the pedal much even with two feet on it when the power assist failed. Always managed to stop it in the end, but it got exciting.
