ABS light due to control module failure on Volvo C70

The anti-lock brake system (ABS) Control Unit has a high failure rate. When this fault occurs, the ABS light will illuminate and codes may be stored indicating a problem with the ABS Pump Motor, or Wheel Speed Sensors, but the problem is the ABS Control Module.

Other symptoms may include an illuminated Check Engine and transmission shift light. and the speedometer may stop working as well.

Note: The brake system will operate normally however during a panic stop the Anti Lock Brakes will not work and the wheels may lock-up, causing a lack of vehicle control under these situations.

RepairPal Verified
Average mileage: 105,075 (40,000–201,300)
7 model years affected: 1998, 1999, 2000, 2001, more2002, 2003, 2004
28 people reported this problem
14 people shared problem details
The ABS light, brake light, shift arrow light all would illuminate as well as the mileage and speedometer vanishing from the dashboard after the car was warmed up. I took your advise and got a 5/32" socket, took the sucker out, cut off the top with a utility knife and small pry bar, heated up the 21 solder points glued the top back on with some monkey glue, re-installed it and haven't had a problem since. Awesome advice and repair instructions. Keep up the good work!! Bob
12 people like thisFlag inappropiate
Veery common issue with C70ies. Got TRACS OFF light on, as well as the speedometer giving up intermittently. A mechanic told me its the faulty wheel speed sensor, and he was going to take out the speedometer and send it to laboratory to have it fixed with estimated cost of $600 and all that bullshit! After a little research I discovered BBA remanufacturer (http://www.bba-reman.com) a company that specializes on different kinds of ECU (Electronic Control Unit) repairs. It took me like 4 days to get it back fixed and cost $83 :) On their website you'll find detailed instructions on how to remove the ABS module. You'll need a special E5 torx socket. I ordered mine at O'reiley's store. Long story, short, its relatively an easy, low cost fix if you know what to do. Good luck!
3 people like thisFlag inappropiate
2000 Volvo C7081,000
ABS light came on after we purchased it used with in a couple days.
3 people like thisFlag inappropiate
the abs and break lights come on, as well as the transmission arrow light, which blinks. the car gets sluggish when accelerating from a stop. the speedometer gives out, comes back in sometimes. no repairs yet. dont know how much it will cost
2 people like thisFlag inappropiate
2000 Volvo C7085,000
check engine and abs light comes on intermittently. flashing arrow and difficulty with acceleration happens intermittently at stop signs. intermittently the speed in dashboard goes out so cannot tell how fast the car is going, and brake light is solid intermittently too.
1 person likes thisFlag inappropiate
Arrow stays on blinking.
2000 Volvo C7040,000
Purchased used in 2006 with 36k miles. Everything was fine for a few months then engine light kept coming on but could not locate problem. Speedometer then failed on highway. Searched on-line and found that this was ABS module. Have turbo and module was not nearly as easy to pull as on-line instructions indicated - I was worried I would damage something else getting it off. Sent it off to be rebuilt for $100 with a lifetime warranty, better than genuine Volvo. Drove around for week without module. When it came back, got it hooked back up and no more problems. Now have 101k on the car, everything else seems to be breaking, but have never had problems with the ABS module again. Dealer want $500 to fix and would have replaced with the same crummy engineering that failed in the first place.
1999 Volvo C70201,300
When I hit a bump, my ABS and Brake light will go on. Then the odometer fails and the mileage goes blank. It will be that way for a bit until I hit another bump or pothole and then everything will come back on. After about 12 times of this, the flashing arrow will come on and I loose power. I have had it checked 4 times, and spent over $1000 rewiring and replacing it. It is dead right now until I can find another mechanic to fix it because my mechanic who only does foreign cars has given up on it.
2000 Volvo C7075,000
ABS control module was bad when I purchased the car at 75000 miles...Obtained a rebuilt one on Ebay for $60.. been working fine ever since...
Same problem. Does not happen in cold weather. Only when air temp is above 65F.
2001 Volvo C7085,093
I just bought this car, wish I would've done some research first. Thought all Volvo's were reliable. Check engine light came on, after I drove down the street. The next day the brake light, abs and check engine light keep coming on and off. Then the speedo stops working. Don't know what I'm going to do, paid a lot for it and it's leaking lots of oil. Lot I bought it from didn't offer any warranty. Looks like I got stuck with a lemon.
ABS Track Control light stays on unless extreme heat or cold conditions out! Also have noticed an occasional bounce of the spedo and message center lights completely up! Have noticed cruise drops out but no particular circumstances! I will get a rebuilt ABS Module soon but wonder if there could be a ground issue with the ECU like my old 86 240 had?
1999 Volvo C70120,000
ABS and brake light come on intermittantly sometimes the traction light or flashing arrown as well. Check engine light will come on and stay on. When ABS and brake light do come on the speedometer goes dead 2 seconds later and will come back up only after the ABS and Brake light go out. Had the vehical speed sensor changed but this did not fix the problem.
1999 Volvo C7090,000
typical issues with this vehicle. Mine failed at 90k miles and I sent it off for repair. Repair took less than 4 days and was about $100 excluding my labor
Related Items:
The anti-lock brake system (ABS) warning light and/or other dash warning lights may illuminate...
My 1999 C70 has a total of 38k miles on it. The ABS light comes on when I am at a light stopped...
ABS light will come on and the speedometer vanishes. Light will go off and speedometer info wi...
The ABS and Stability traction control disengaged light illuminate after about 5-30 minutes of...

Related Content