I am having this done right now but on a 2000 XC v70 turbo wagon...the part alone costs around 400-450 dollars and the labor as you all know can vary widely but after speaking with the repair shop we were able to work it out for 575 including labor. This is a VERY good price as the other shops that i brought it to for estimates all told me 625+ so i am very happy. Just for a reference the car has slightly above 110,000miles and I live in CT....the highest estimate i got was for 750. Hope this helps.
Volvo4Life
The voltage regulator in a Volvo alternator has been built into the alternator since the 70's. To replace it, you would have to remove the alternator and disassemble it. Then the regulator can be accessed. It is probably soldered in, so you will need a good soldering gun and the ability to de-solder and solder. It would be quicker and easier to replace the alternator assembly with a remanufactured unit. massvolvoman
I had a similar problem in a taurus. I had to replace the alternator.
When my Volvo broke an alternator drive belt the majority of the warning lights came on.
The VR is on the back of the alternator.
It is built into the alternator. I would just replace the alternator.
4500
One can replace the oxygen sensors in a Volvo S80 by them selves by utilizing the help of a Chiltons manual on Volvo S80s. The faster route though more expensive, would be to enlist the help of a certified Volvo mechanic.
That would depend on what year which you do not list. A phone call to any auto parts store will give you the answer you are looking for.
Check the bulbs, check the fuse, check the brake light switch, in that order.
I would say about $500 Max
Only when it fails. 250,000 miles would be average.
I would expect couple hundred dollars at least for a new alternator plus labor.