SL500 Battery problem: electric consumer off line
 

Hello: first post

I have a 2003 SL500 with 2000 miles: hardly used, garage kept

the battery warning indicator stays on now and it says "electric consumers off line": previously I saw the warning but it would disappear after driving

I have taken it to the dealer twice: he says no problem

checking it myself, it seems that the rear battery is bad: it will not take or hold a charge: the start battery is fine

what troubles me is why the dealer cannot diagnose this: is it as simple as replacing the rear battery?

TIA

Two thousand miles? Using a trickle charger might be a good idea. Even though your car only has a rest current draw of about 50mA, sitting unused for months at a time will dis-charge the battery.