850 ABS Light Stays On

[850south]

Hi again, I have another small problem with the ABS light somtimes staying on when I start up,when this happens some of the electric don't work (Indicators,electric windows & wipers) so what I do I restart the car until the ABS light doesnt stay on,any ideas & poss cost, also when its been raining or damp the car seems to rev up & down (800-1500rpm) but after I give it a good rev over 2750rpm it stops this & is fine, again any ideas.
Cheers

[fraz13]

Is your car Christine's sister???

Sorry mate have'nt got a clue but sounds like a slight electrical fault

Have you had the codes read?

[Wobbly Dave]

Two thoughts - could be a dodgy ignition switch or you have a control unit fault with the ABS. Get the diagnostic codes read and see. I can help if the latter is at fault...

http://www.volvot5.co.uk/forums/showthread.php?t=224

I might be entirely wrong.

[Andrew]

Is your car Christine's sister???

Sorry mate have'nt got a clue but sounds like a slight electrical fault

Have you had the codes read?

Agreed - perhaps moisture is getting into the system somewhere. Have a main dealer check it out.