batery light on

patredbruin · Post by **patredbruin** » 19 Nov 2012, 17:56

hello all its been a while have 2002 XC70 my battery light came on this morning and the message window said el. powesystem service required. do i need an alternator?

Post by **kahl** » 19 Nov 2012, 19:09

I recently went through this on my s80. I first had my battery checked at Advance. Battery tested good. I checked voltage output and it was 11.6. I put in a new regulator and problems went away. The brushes were worn down when I compared them to the replacement. I got the part through International Auto Parts. Mileage on the car was 127K.

patredbruin · Post by **patredbruin** » 19 Nov 2012, 20:01

voltage regulator? on the way home from work the abs light & the airbag light came on also telling me low beam failure both low beams are out and i just replaced them about a month ago

mbreed · Post by **mbreed** » 20 Nov 2012, 10:56

Low system voltage will give you all kinds of errors that can be fixed just by restoring proper system voltage. The voltage regulator is a serviceable part on your alternator.

Post by **coflynn** » 22 Nov 2012, 11:29

You can do the whole voltage regulator in place too, see https://www.matthewsvolvosite.com/forums ... =9&t=51058