V70 ABS module......update

omega888 · Nov 15th, 2012, 20:00

I removed my abs module from my car (1998 V70 2.4 10v petrol auto) and got my dad to re-solder all the dry joints. (while the abs was off the car the speedo/mileometer and headlights didn't work????) anyway, I put the re-soldered abs unit back on the car and..........nothing! on a wet surface the brakes lock up under heavy braking -no abs input. Is there anything else it could be?

Thanks all

(ps headlights/speedo/mileometer working again once I refitted the abs module).

Ecurie Ecosse · Nov 17th, 2012, 05:39

I recently had a similar problem with my ABS on my 850. Changed just about everything, including getting the module refurbished, and it turned out to be the ABS rings, which start breaking up due to age.

Oh, and be sure to replace them in pairs and they should have 48 teeth IIRC.

Don't do what a "specialist" from Cowdenbeath did to mine and only replace 1 of the rings which had a different number of teeth to the other one - it didn't really resolve the problem and caused different issues.

omega888 · Nov 18th, 2012, 09:46

thank you for that will look into the rings......didn't even know they existed!!!!!!

omega888 · Nov 18th, 2012, 12:27

have looked on ebay for the abs rings - prices range reange from £1.29 to £11.99!!!! do I need to replace the rings on all 4 wheels? its looks like a big job but will be worth it if I can get the abs working again......! thanks

Nov 15th, 2012, 20:00	#1
omega888 Junior Member Last Online: May 31st, 2013 19:20 Join Date: Jul 2011 Location: manchester	V70 ABS module......update I removed my abs module from my car (1998 V70 2.4 10v petrol auto) and got my dad to re-solder all the dry joints. (while the abs was off the car the speedo/mileometer and headlights didn't work????) anyway, I put the re-soldered abs unit back on the car and..........nothing! on a wet surface the brakes lock up under heavy braking -no abs input. Is there anything else it could be? Thanks all (ps headlights/speedo/mileometer working again once I refitted the abs module).

Nov 17th, 2012, 05:39	#2
Ecurie Ecosse Senior Member Last Online: Aug 28th, 2023 20:53 Join Date: Aug 2011 Location: Edinburgh	I recently had a similar problem with my ABS on my 850. Changed just about everything, including getting the module refurbished, and it turned out to be the ABS rings, which start breaking up due to age. Oh, and be sure to replace them in pairs and they should have 48 teeth IIRC. Don't do what a "specialist" from Cowdenbeath did to mine and only replace 1 of the rings which had a different number of teeth to the other one - it didn't really resolve the problem and caused different issues.

Nov 18th, 2012, 09:46	#3
omega888 Junior Member Last Online: May 31st, 2013 19:20 Join Date: Jul 2011 Location: manchester	thank you for that will look into the rings......didn't even know they existed!!!!!!

Nov 18th, 2012, 12:27	#4
omega888 Junior Member Last Online: May 31st, 2013 19:20 Join Date: Jul 2011 Location: manchester	have looked on ebay for the abs rings - prices range reange from £1.29 to £11.99!!!! do I need to replace the rings on all 4 wheels? its looks like a big job but will be worth it if I can get the abs working again......! thanks

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