Okay, so I think my battery is going to go dead soon because I can definately hear a problem with the car starting especially when it's colder. How hard is it to replace the battery yourself? Can you just unscrew, lift, remove, and replace? Which battery should I get? Is there special MB battery or something?
It's straight-forward to replace yourself. As always, pull the negative cable first. If you still have the stock radio, you'll need to have the radio code handy. I know it doesn't apply to you, but for Model Year 2001 and newer SLKs, you also have to calibrate the ESP steering angle sensor (I think the procedure is in the owner's manual).
As for the replacement part, my experience with both of my SLKs is that the quality of the Mercedes battery is good, but by no means worth ~$120. Checker/Schucks/Kragen, AutoZone, Pep Boys, etc. offer equivalent batteries for about half the price with a better warranty and they will help you install it.
On the other hand, If you're the kind of person that doesn't want to do it yourself, you can call M-B roadside and they will come to you and replace the battery for the same price as you can buy it from the dealer without installation. That's actually a pretty good deal.
'02 SLK32 AMG, Firemist Red, Alpaca/Charcoal, K4, CD changer
'04 E320 Wagon, Capri Blue, Stone.
Vehicle: 2002 SLK 32 AMG, bone stock. 1987 190E 2.3-16 valve (destroyed). 1991 300CE, a work in progress.
Location: Near Washington, DC
Interstate is an approved alternate for the Mercedes battery ...
I had my battery replaced in my 230, and it cost $90.00 from the local dealer. about the same as from a parts store, so it's your call. MBCA members get a discount from most dealers, so that could help as well.
I would go with the OEM battery because I like the clearish white top better than the black tops with garish logos that the aftermarkets come with. Take Brian's advice and call roadside assistance and the labor will be free.
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