00slk
Senior Member
- Joined
- Dec 1, 2012
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- Cambridgeshire UK
- Your Mercedes
- 2002 SL55 AMG, 2005 E320 CDi, 2014 SLK250 CDi, 2003 SLK200
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- #21
Check charging voltage at both batteries.
If I were to guess I'd say the charge control module is bad assuming everything else is good. Given you have 2 r230s try swapping it over perhaps. They're a bit eye watering to buy....
Thanks Alistair, I swapped batteries this morning and the old battery brings up no issues or consumer off line messages.
I am now assuming the Halford big battery hasn't the volts to run everything.
I will recheck both batteries tomorrow now, in the mean time the old battery is staying in the car for today.