SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: battery in trunk (AGM) needed

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Old Feb 5, 2011 | 07:29 AM
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db2001's Avatar
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SL500
battery in trunk (AGM) needed

Does anyone have the retail name / number for the battery located in the trunk (or cross reference info)? I've been getting the "Convenience Functions not Available" in the mornings or after work if the temperature is cold, and strongly believe that the rear battery (never been changed as far as I know) is nearing its end.

I'd like to call around for pricing (Advance Auto, O'Reilly, Autozone, etc) but they typically just have the front battery listed. I need to be able to give them more info about the battery so they could cross reference (and pulled the below from a pdf but don't think it's enough).

Systems battery: 12V 70Ah 450A (DIN) 798A (EN)
• Contruction: Valve Regulated Lead Acid (VRLA) type, using Absorbent Glass Mat
(AGM) design.

Thanks in advance - David
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Old Feb 5, 2011 | 08:44 AM
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mtrevelino's Avatar
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From: The Villages, Florida
2006 E320 CDI
Try looking here:
http://www.interstatebatteries.com/c.../CarsAndTrucks
Mike T.
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Old Feb 6, 2011 | 07:21 AM
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db2001's Avatar
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SL500
Thanks Mike.
I called around on the Interstate and got pricing around $188. The dealer wanted $203. I ended up taking out hold down bolt for the battery in my garage, then driving to the local dealer with a wrench to undo the connections and swapping the battery out there.

Took longer to ring it up than to do the install. It turns out this was the original battery for the car.
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