ABS, TRAC, Service lites come on individually or all sporadically! Sometimes 1 or more are on or all. sometimes none. Grounding? No work on vehicle lately. 34k miles. 1998 C70 HT. Any suggestions? Thanks!

 

i am having the same problem and posted up somewhere on the forum(cant remember what section) search up my name and you will see my post and a link to the guy that sells rebuilt units cheap.
it is a faulty abs unit that is causing all your problems. i will be ordering from that guy in the next couple months but not in a rush since my volvo is now parked for the winter. so you may be able to give a review of them before i will

 

Cleaned elec connectors & sensors as suggested in this forum, lights out now!

 

Lights come back on sometimes, talked to dealer service tech, he said soft errors, scheduled service next week. Got 4 extra key blanks & had cut. $5.95 for blank & $30 to cut each key @ locksmiths. Got 2 extra key fobs, going to get programmed @ dealer next appointment. Replaced 2 bent rims & installed new tires & spark plugs.

 

Follow-up. Dealer wants $782 for factory refurbished ABS/TRAC module + $118 for 1 hour labor to install. IPDUSA $300 same module, $4.71 @ NAPA for E5 socket. Thank the stars for IPD!!! Spend savings on grand kids for Christmas.

 

E-bay repair: $45.00 by: ABS CONTROL MODULE. (818) 428 4889, 5864 West Pico Blvd., Los Angeles, CA. 90019. E5 torx socket required, 1/4 in drive. TORX: E = female, T = male. FYI. Lifetime gaurantee! Shipping extra.