1998 Volvo S70

SDIgroup · Post by **SDIgroup** » 10 Nov 2002, 22:00

Hi, I have a 1998 Volvo S70 and shortly after having my car jumped due to a dead battery, the ABS light came on. The brakes appear to be working OK but is there any way to get this light to go off or reset?
Thanks

chriskose · Post by **chriskose** » 11 Nov 2002, 11:10

The only way that I know of to reset codes is with a code reader. There about $200-300$ but invaluable if you do your own repairs. They basically tell you what is wrong with the engine and other sysytems through a code system. You might be able to take it to a shop and have them read the codes and/or reset them. It'll cost you though...

SDigroup · Post by **SDigroup** » 11 Nov 2002, 18:56

Chris,
Thanks for the reply. I do a lot of my own work (mostly minor stuff). Where do I get one of these and will I be able to use it without other software, etc.,?

chriskose · Post by **chriskose** » 12 Nov 2002, 19:28

I would check out www.autoxray.com first to see what you need. Online sources would probably have the best prices. A guy I work with has one, I'm not sure which model, but it can be hooke up to any vehicle that has on board diagnostics: GM, ford, mopar, euro, etc. Very handy.

ls1mn6 · Post by **ls1mn6** » 17 Jul 2003, 19:09

The ABS has its own computer and cannot be communicated with using the OBDII stuff. You have to spend at least $600 to read the ABS code.

Guest · Post by **Guest** » 24 Aug 2003, 08:16

ls1mn6 wrote:The ABS has its own computer and cannot be communicated with using the OBDII stuff. You have to spend at least $600 to read the ABS code.

I think the correct statement is that the abs codes require the Volvo specifice OBDII codes which may only be avalable in the highest obd code readers.

Guest · Post by **Guest** » 25 Sep 2005, 16:13

Hi.

I've had the exact same problem. Left the ligths on for a day, came back to flat battery. Got a jumpstart, and everything seemed fine at first.
The first two days the engine were eratic, with a very rough idle. Then it smoothed out fine. Then the ABS warning light came on.
I didn't notice anything different with the car, so I decided to drive until next service (40k) or so.
They wouldn't let the car go through MoT because of the warning light. They searched the system, and came up with diagnosis that said the ABS-ECU or the ABS-PUMP were broken.
This even everything seemed to work fine.
This repair were costly, so I searched the marked and found a secondhand ABS-complete unit, mounted it in the car.. Then the light came off.

As a lesson from this !
Jumpstarting may damage the electrics of the car .
Beware of this !

Mr-Wong · Post by **Mr-Wong** » 26 Sep 2005, 01:29

I rented a very basic OBDII reader from autozone for free when I first bought my used volvo...just to take a peek. They charge 180 and then refund it when you bring it back. this reader is ultra simple though.

Vitor · Post by **Vitor** » 04 Oct 2005, 08:01

Only VADIS and high end OBDII scanners can access the ABS unit on Volvos.
It may be a coincidence that your car was jump started.

All the ABS control units (Installed on 96 and newer 850, 70 series and S80 models) will eventually fail after they reach 65,000 miles or 5 years. The average is 85,000 miles and/or 6 years for failures.
A dealer will charge from $60.0 to $120.00 to diagnose the problem and about 95% of the cases the mechanic will recommend to replace the ABS control unit.

Here's more information on this issue and a replacement alternative.
Vitor's Volvo ABS website