I have a 1994 SL600 with an odd battery light issue.

Last night my battery light came on. I drove the car for a couple minutes and the battery light went off. After a few more miles the light returned.

Today, I started the car and the battery light was off. After driving for a few hours, the battery light returned. After pressing hard on the accelerator, the light would go off. When I stopped accelerating hard, the light would return. This is not a 100% correlation as there were times the light did not go off and I was at wide open throttle.

I just started the car about an hour ago and the light is off.

Any ideas? I made sure the battery and the wires connected to the positive terminal are connected tight.

MUCH APPRECIATED

 

Assuming the battery itself is either new or you know is fully charged, I'd suspect the voltage regulator; installs in the alternator, cheap fix around $40