Acceleration and warning lights!!!
 

Whats wrong? Ok, under medium to hard acceleration in my 1991 300SL the battery warning light comes on. Why is this happening and how do I fix it.

Thanks in advance!!

Allan

I assume you have checked and tightened all your connections? Are they free of corrosion and making full contact with the terminal? Is there a battery strap on your model? Also, check the fluid level in your battery, just to make sure that it is not sloshing.

I am no mercedes expert, but these are the first things I would check in any car that exhibited these symptoms.

good luck,

Anyone else have some input on this?

You don't mention your mileage, but if it's "up there", I'd check the brushes on the alternator for wear. I believe it's an assembly ( VR module ) which can be removed and changed fairly easily. Along the same line, a loose alternator belt could be slipping. I have a 1991 300SL and found I had a badly corroded cable at the positive battery terminal. The corrosion was under the black plastic insulation, so it wasn't apparent to visual inspection. Tod