S60 Electric system problem

underwood · Post by **underwood** » 06 Jun 2013, 20:56

I would like you to help me to shed some light on my weird electrical problem.
2003 Volvo S60 2.4T
Returning home, 5 miles to go I got "El. Power System Service Required" plus battery light.
During these 5 miles got all kind of errors like ABS, ASRS, etc... Lights were noticeably dimmed at the end.
Ordered voltage regulator - Bosch F00M A45 211.
Installed it without removing the alternator.
Recharged the battery as it was drained.
Everything started fine and was running fine for 10-15 minutes. After that I noticed that all lights are flickering. Put voltage meter - voltage was jumping from 14.1V to 16.5V.
I decided to replace original 10 years old battery with new Duracell 750 CCA one.
All was good for first 10 minutes. Then voltage started to jump now from 14.1V to 15.5V.
The VR is brand new made in Germany.
Could I miss-connect something to have that effect?
Can it be alternator itself?
How can VR produce High voltage?
Appreciate all the ideas.

underwood · Post by **underwood** » 12 Jun 2013, 07:39

Anyone had experience with BOSCH VR been bad out of the box? Does it ever happen? Made in Hungary.

sbricker · Post by **sbricker** » 11 Sep 2013, 10:57

Did you ever get your problem fixed? I'd recheck all the connections to be sure.

I had the same symptoms on my wife's 2001 v70 2.4T. I just replaced the VR with a replacement Bosch and so far so good. It has only been a day but everything seems to be back to normal. I had taken off the entire alternator b/c I thought I was going to have to replace it until I found the info to try just the VR.