Which battery for a 2001 E55 AMG

Dec 19, 2022 | 07:54 PM

mac2001

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Joined: Jan 2002

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From: Las Vegas

E55

Which battery for a 2001 E55 AMG

Never seen a battery last as long as this one, especially considering the car is rarely driven. But it’s time for a new one. First thing is trying to get the rear seat out of the way - I try to raise the clip while lifting the rear seat, but it seems rather stuck. The clip on the left side lifts easily. Only the one on the right side seems stuck. I suppose I will just keep trying to free it, perhaps with a long screwdriver for leverage. Any suggestions?

Which is the strongest battery to get? Should I be looking at amp/Hour, or CCA (cold cranking amps). Interstate website shows 3 choices, with most expensive at $260 with 3 year warranty. I do not see any a/H specified.

I won’t do the work, I’m taking it to the local shop that has done routine service (they seem to know the W210 chassis), but maybe new techs there, so I need to be informed about the procedure prior to letting them touch the car. Seems an important procedure is jumping the car prior to disconnecting and removing the existing battery. Does this eliminate any need for reprogramming?

Dec 20, 2022 | 10:07 AM

turbo1k

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From: Somerset MA

2001 E55 1999 E55 2001 ML55 2017 C43

I run the interstate replacement in all 3 of my e55's. As far as the seat goes i always push it down, pull the tap up then lift the seat.

Dec 20, 2022 | 12:41 PM

bbirdwell

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From: Republic of Texas

'99 and '05 E55 AMG

You want an AGM battery rated at 900 cca. The last one I bought at Sam's a couple of months ago cost me approximately $160. I forget the size but that information is available on the internet. It is one heavy SOB!
Be sure the key fob is not in the ignition when you connect jumper cables or when you connect the new battery. You will need to reset all windows, the mirrors, the sunroof, and you'll have to key in your radio code.
Also, you will get an ESP failure light on the instrument cluster. You will need to turn the steering wheel lock to lock several times to reset the steering angle sensor to make the warning light go away.
Edit: I believe the battery size is an H8 but please verify.

Last edited by bbirdwell; Dec 20, 2022 at 12:51 PM.

Dec 20, 2022 | 11:04 PM

mac2001

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From: Las Vegas

E55

Turbo1K - I will give that seat another try. Thanks for the tip.

bbirdwell - Agree that the AGM is easily the best choice. Got it, do NOT leave key in the ignition. As for resetting systems, is that going to be necessary if we keep 12 Volts powering the car at all times?

Dec 21, 2022 | 10:20 AM

bbirdwell

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From: Republic of Texas

'99 and '05 E55 AMG

Quote:

Originally Posted by mac2001

<snip>

bbirdwell - Agree that the AGM is easily the best choice. Got it, do NOT leave key in the ignition. As for resetting systems, is that going to be necessary if we keep 12 Volts powering the car at all times?

It should work out for you. I once read a reason why not to do so but I cannot remember the argument against having a 9-12 volt battery tied into the system. In any case, I wanted you to be aware of the worst-case actions. The ESP failure light startled me a bit the first time I changed a battery...