Alternator?
 

I have a 1990 Audi 90 FWD. Today I was driving it on the highway and the Battery, Brake, Parking Brake, and ABS lights came on all at once. The car wasn't really acting wierd so I didn't pay any attention. I was driving back tonight and the battery light came on on the onboard computer. Does anyone know if this would mean an alternator replacement?

RE: Alternator?
 

If you have a volt gauge (has battery pic) it will center out or point to the left to indicate there is no charge refilling the battery. Normal range is between 12 and 14 except when starting. If it is your alt. you will know soon enough as the battery will go dead for sure! Good luck!