Battery registration?
Thread Starter
Senior Member
Joined: May 2017
Posts: 257
Likes: 31
W209 CLK55 - 2003
Battery registration?
Does a new battery need to be registered? I assume I have an AGM type. Car is a 2016 e220d with 37k miles.
The car is running fine however stop start is not working. Fault codes show a couple of systems complaining about voltage with stored (not current) codes.
If I charge the car on a trickle charger, stop start will work for a short period but then stop working. To me that is pointing to a bad battery. Even a good run on the highway is not enough to get stop start to work.
The car is running fine however stop start is not working. Fault codes show a couple of systems complaining about voltage with stored (not current) codes.
If I charge the car on a trickle charger, stop start will work for a short period but then stop working. To me that is pointing to a bad battery. Even a good run on the highway is not enough to get stop start to work.
MBWorld Fanatic!
Joined: Jun 2020
Posts: 1,363
Likes: 1,012
'11 E350, '11 E550, '98 M3, '95 E320
Did you replace the main battery? Charging it [main battery] and having the start/stop functioning indicates the main battery is either weak or your trips are not long enough to sufficiently charge it. The main battery needs to be charged up to a certain point, following an engine start, before the start/stop system will enable.
Thread Starter
Senior Member
Joined: May 2017
Posts: 257
Likes: 31
W209 CLK55 - 2003
I’ve just done some research and it looks like I would have a warning on the dash if it were the super capacitor. I’ve also read codes using an iCarsoft i980 and that was just showing a couple of low voltage stored (not current) faults for instrument cluster and ESP modules.
I think what is happening is that the battery is good enough to run the car but not holding sufficient charge to activate stop-start (unless it has just come off a charger).
I think what is happening is that the battery is good enough to run the car but not holding sufficient charge to activate stop-start (unless it has just come off a charger).
Thread Starter
Senior Member
Joined: May 2017
Posts: 257
Likes: 31
W209 CLK55 - 2003
Did you replace the main battery? Charging it [main battery] and having the start/stop functioning indicates the main battery is either weak or your trips are not long enough to sufficiently charge it. The main battery needs to be charged up to a certain point, following an engine start, before the start/stop system will enable.
My main question is whether the new battery needs to be registered like it does for other brands.
MBWorld Fanatic!
Joined: Jun 2020
Posts: 1,363
Likes: 1,012
'11 E350, '11 E550, '98 M3, '95 E320
Per WIS, yes: confirm battery change in front SAM control unit in the Activations menu
Trending Topics
Thread Starter
Senior Member
Joined: May 2017
Posts: 257
Likes: 31
W209 CLK55 - 2003
I am wondering if it is required if I keep the car on a constant power source and also replace with the same specification battery.
MB World Stories
The Best of Mercedes & AMG
Manual Mercedes? 6 Times Sindelfingen Let Drivers Have All The Fun
Verdad Gallardo
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Verdad Gallardo
8 Classic Boxy Mercedes Designs That Have Aged Like Fine Wine
Verdad Gallardo
Flawlessly Restored Mercedes 190E Evo II Heads to Auction
Verdad Gallardo
Electric Mercedes C-Class Unveiled: 11 Things You Need to Know
Verdad Gallardo
Mercedes EQS Gets A Major Update: Everything You Need to Know
Verdad Gallardo
5 Underrated Mercedes-Benz Models That Don't Get the Love They Deserve
Verdad Gallardo
Mercedes 300D Has Pushed Well Past 1 Million Miles and It Ain't Stopping
Verdad Gallardo
10 Most Reliable Mercedes-Benz Models You Can Buy Used
Verdad Gallardo
MBWorld Fanatic!
Joined: Jun 2020
Posts: 1,363
Likes: 1,012
'11 E350, '11 E550, '98 M3, '95 E320
Could you say a bit more about what that means and what is actually happening in the car? Does the battery have any smart features? It looks to be a standard AGM battery to me.
I am wondering if it is required if I keep the car on a constant power source and also replace with the same specification battery.
I am wondering if it is required if I keep the car on a constant power source and also replace with the same specification battery.
That said, if you keep power on the car and swap out the battery... I don't think you "need" to perform this for the car to function. The side affect may be less optimal charging.
Junior Member
Joined: Jan 2008
Posts: 31
Likes: 11
From: Australia
W213 - E220d. W212 - E350 wagon
I recently changed the main battery on my W213 e220d.
No issue changing it over didn't even use the battery saver.
There's residual leakage from onboard electronics while the car is parked and stationary. This will reduce the charge quite significantly after a few days.
If you only do short runs the battery will not charge up to 100% and possibly not charge enough for stop/start to operate.
I've bought a Noco charge/trickle charger to keep the battery optimal while parked in the garage.
I'm currently in a Covid lockdown, so the car is not being driven.
When locking the car for a period, make sure you "Double Click" the proximity key. This turns off many of the active features while the car is parked and saves the battery from running down so quickly
No issue changing it over didn't even use the battery saver.
There's residual leakage from onboard electronics while the car is parked and stationary. This will reduce the charge quite significantly after a few days.
If you only do short runs the battery will not charge up to 100% and possibly not charge enough for stop/start to operate.
I've bought a Noco charge/trickle charger to keep the battery optimal while parked in the garage.
I'm currently in a Covid lockdown, so the car is not being driven.
When locking the car for a period, make sure you "Double Click" the proximity key. This turns off many of the active features while the car is parked and saves the battery from running down so quickly
