Life of the original battery
Senior Member
Joined: Jan 2021
Posts: 328
Likes: 179
From: The Middle of the Fairway
2025 E450 All Terrain Wagon, Nautical Blue Metallic, Macchiato Beige/Black Interior
Do you happen to know what the aux battery does? If my main battery is good and the aux battery goes bad, what is the effect that I would see?
My car is five years old, and I haven't noticed any battery issues. The start/stop feature doesn't activate very often, which doesn't bother me. The fact that it still activates occasionally makes me feel more comfortable that things are still acceptable.
My car is five years old, and I haven't noticed any battery issues. The start/stop feature doesn't activate very often, which doesn't bother me. The fact that it still activates occasionally makes me feel more comfortable that things are still acceptable.
Thread Starter
Super Member
Joined: May 2003
Posts: 967
Likes: 77
From: Long Island, New York
2018 E400 4matic Wagon
Do you happen to know what the aux battery does? If my main battery is good and the aux battery goes bad, what is the effect that I would see?
My car is five years old, and I haven't noticed any battery issues. The start/stop feature doesn't activate very often, which doesn't bother me. The fact that it still activates occasionally makes me feel more comfortable that things are still acceptable.
My car is five years old, and I haven't noticed any battery issues. The start/stop feature doesn't activate very often, which doesn't bother me. The fact that it still activates occasionally makes me feel more comfortable that things are still acceptable.
Member
Joined: Sep 2018
Posts: 111
Likes: 44
2018 E-300 4matic Sedan
As I'm approaching a parking space, I've gotten in the habit of pushing the button to bring up the camera display, followed by the button to deactivate stop/start. I use the cameras to pull close to, but not run into, the curb at the front of the parking space. It would especially annoy me when the engine would cut off as I very briefly stopped, while I was activating the camera view that I wanted.
Super Member
Joined: Aug 2019
Posts: 594
Likes: 171
From: USA to Germany
W221/W222/W213/X290
I have a 2017 with 127,000 miles. I live in New England and the winters here absolutely suck. My battery has never been replaced. I drive mostly highway and long periods, blast music and keep most of my lights lit up on bright, and have the multibeam headlights. All features still work and it's going strong for now. I wouldn't touch or replace it until you get few signs like a battery light or get stranded as there is no need to replace it not knowing how much further you can go with it.
Thread Starter
Super Member
Joined: May 2003
Posts: 967
Likes: 77
From: Long Island, New York
2018 E400 4matic Wagon
I considered one of those devices, but I never got around to it. Now that it doesn't activate as often, it doesn't bother me much.
As I'm approaching a parking space, I've gotten in the habit of pushing the button to bring up the camera display, followed by the button to deactivate stop/start. I use the cameras to pull close to, but not run into, the curb at the front of the parking space. It would especially annoy me when the engine would cut off as I very briefly stopped, while I was activating the camera view that I wanted.
As I'm approaching a parking space, I've gotten in the habit of pushing the button to bring up the camera display, followed by the button to deactivate stop/start. I use the cameras to pull close to, but not run into, the curb at the front of the parking space. It would especially annoy me when the engine would cut off as I very briefly stopped, while I was activating the camera view that I wanted.
MBWorld God!
Joined: Dec 2019
Posts: 32,224
Likes: 6,281
What is even more annoying I found is that when you come to a stop (to park the vehicle) the engine turns off and then when you put it in park it turns back on before you can turn off the ignition and leave the vehicle.
Junior Member
Joined: Sep 2022
Posts: 27
Likes: 10
From: New York
2018 E43
DieHard Platinum AGM Battery: H8 Group Size, 900 CCA, 1000 CA, 160 Min Reserve Capacity, For High Electrical Demands
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Junior Member
Joined: Sep 2020
Posts: 25
Likes: 15
From: DC
2017 E400 wagon
This one. The H8 is wider but it fits becaue the smaller battery the car came with has a spacer to accommodate the smaller battery. If you remove the spacer with the old battery the H8 will fit. That was my experience anyway.
DieHard Platinum AGM Battery: H8 Group Size, 900 CCA, 1000 CA, 160 Min Reserve Capacity, For High Electrical Demands
MBWorld God!
Joined: Dec 2019
Posts: 32,224
Likes: 6,281
Same but at the times I forgot to turn it off or that I press it and later realized the press didn't register when the engine turns off. I honestly don't understand why can't the engine stay off when brake to a stop and hit park, why does it have to turn on the engine when you hit park.
MBWorld Fanatic!
Joined: Nov 2014
Posts: 5,359
Likes: 1,097
.
Same but at the times I forgot to turn it off or that I press it and later realized the press didn't register when the engine turns off. I honestly don't understand why can't the engine stay off when brake to a stop and hit park, why does it have to turn on the engine when you hit park.
Thread Starter
Super Member
Joined: May 2003
Posts: 967
Likes: 77
From: Long Island, New York
2018 E400 4matic Wagon
I second this. I went with the larger H8 battery (not a huge price difference) for my 2017 last year. There's no trick to changing it: just unplug the battery and put the new one in (charge it first) - no problems with the settings/memory on the computers. And our cars and newer ones use capacitors and not an auxiliary battery - the capacitors should last longer than the car.
MBWorld Fanatic!
Joined: May 2018
Posts: 3,048
Likes: 905
From: Long Island, NY
2019 E 450, 2016 E350 4matic (retired), 2018 Ford Edge Sport, 2008 Porsche Boxster
I recently bought an Everstart H-8 AGM battery from Walmart for my Jaguar XF. The battery had the same specs as others like Diehard, AC/Delco and Motorcraft that cost a lot more (probably made by the same manufacturer but under different labels) with free shipping to my home and no core charge (so I didn't have to go to the store to get a credit for my old battery).
Super Member
Joined: May 2014
Posts: 620
Likes: 65
From: Florida
2018 E300 Luxury - P3 and more
My start/stop feature stopped working many months (6?) before the car started throwing low battery warnings on the dashboard. Living in Florida, I didn't mind the "feature" being gone. I did replace the battery once I started getting low battery warnings. Much like UA549, mine never left me stranded.
I'm not sure what this talk about an Auxiliary battery is -- the W213 doesn't have one to the best of my knowledge. My W212 had 3 batteries in it and was a nightmare, going through 9 batteries in 3 years...but MBUSA said that was "normal".
I'm not sure what this talk about an Auxiliary battery is -- the W213 doesn't have one to the best of my knowledge. My W212 had 3 batteries in it and was a nightmare, going through 9 batteries in 3 years...but MBUSA said that was "normal".
MBWorld God!
Joined: Dec 2019
Posts: 32,224
Likes: 6,281
A bit OT but 50% of the time I put the car in park it is just a momentary measure while someone is entering/exiting the car or loading/unloading something. I wouldn't want the engine to shutdown automatically. For me the start/stop function rarely occurs because the A/C runs 11 months of the year. If the car stopped, the interior would overheat almost immediately. MB wisely blocks start/stop if the interior temperature can't be maintaine when the engine is stopped.
Super Member
Joined: Oct 2022
Posts: 949
Likes: 352
X214
A bit OT but 50% of the time I put the car in park it is just a momentary measure while someone is entering/exiting the car or loading/unloading something. I wouldn't want the engine to shutdown automatically. For me the start/stop function rarely occurs because the A/C runs 11 months of the year. If the car stopped, the interior would overheat almost immediately. MB wisely blocks start/stop if the interior temperature can't be maintaine when the engine is stopped.
