kvirikadzed

Been getting low battery for a year now ,
want to replace main battery on 213 e63

Wonder if anyone has tried any other battery outside of stock one ? Has one replaced about 2 years ago and it started to show alerts after about a year, now for past 7 mont I’ve had low battery warning .

thanks

bobblehead

I had mine replaced under warranty at 3.5 yrs in service time.

Ed99

Would there be a warning message for low in battery? Just curious.

W205C43PFL

If you still have new car warranty this should be covered though as long as the battery fail the battery test. I also think maybe there is a warranty on the replacement as well that happened two years ago?

W205C43PFL

I believe it would be "Stop, leave vehicle running" "Leave vehicle running" or "12V battery, see operator's manual"

atl 2 chi

That is what my display continued to show so I had it replaced.

W205C43PFL

Hopefully no more error messages : )

HBerman

I had the battery replaced on my 2021 E63S last week, There was a weak cell that was lowering static voltage after 1 day of inop. This was replaced under warranty after the dealer got permission from MB to do the replacement.

W205C43PFL

Usually it is the starter battery causing electrical glitches but auxiliary battery cannot be neglected as well as I heard it can affect start/stop and even transmission shifting behaviour.

taphil

There's no aux battery in W213.

W205C43PFL

Wait, are you sure? I could had sworn there was one.

W205C43PFL

I found this video, maybe auxiliary battery is market dependent?
youtube.com/watch?v=wvzuaj233J0

imack

Or maybe generation dependant: https://mbworld.org/how-tos/a/merced...battery-389645

Ivan. MacKenzie.

imack

Excerpt from the 2020 E-Class Wagon Operator's Manual:


Battery for the transmission???

Ivan MacKenzie.

W205C43PFL

That explains why auxiliary battery malfunction changes the shifting behaviour of the transmission, interesting find, never occurred to me to look in there.

W205C43PFL

As you can see from the youtube video posted above, it is also on W213 s, but problem is not sure if it is market dependent hence why some W213 might not have it?

imack

The video shows replacement of something he calls a "voltage regulator". It's certainly doesn't look like a battery: https://mbparts.mbusa.com/oem-parts/...e-205905341480 , and it doesn't show fitment for W213.

I remain confused.

Ivan MacKenzie.

W205C43PFL

Same but even in the C-Class the auxiliary battery is really a capacitor to add to the confusion?

taphil

Yes, that capacitor voltage regular replaced the functions of an actual AGM lead acid aux battery located in the trunk.

W205C43PFL

I see, if that is what you mean by not having an aux battery in the W213 then that clears up the confusion, MB calls it the auxiliary battery still although it has become a capacitor for a while now since W205 C-Class I believe?

NickTheStick

I recently had my main battery replaced on my 2018, after having warning messages for several weeks. It failed the Xentry test and cost me $295.xx + labor. No more warning lights.

HBerman

Nope! There is a capacitive store on the E63S, but no auxiliary battery.

kvirikadzed

I’ve had it replaced one allrady at 32 k under warranty now at 52k mi , are there any alternatives to stock batteries ? Replacing should not be that hard .

kvirikadzed

how much was labor ? Soiling like I need new one as well.

taphil

Battery costs around $200 and takes 5 minutes or less to replace.