TRACS/ABS: Replaced rear wheel bearing -> Anti-skid + ABS ON

[galmaas]

I replaced right and left rear wheel bearing kit on my xc90 2007 2.4 D5.
When driving ABS is ON and anti-skid complains when starting - then goes off
Any suggestions what next?

[Tannaton]

I've had intermittent issues before when using cheap pattern wheel bearings, I think they aren't exactly the same dimensions so the reluctor ring on the driveshaft is not in the same place with respect to the sensor.

Would suggest you check the sensor and wiring just in case it was disturbed during the bearing change.

Then - get the codes read - it will tell you if the sensor and/or wiring is faulty or if the readings from it are inconclusive.

Its a really simple system - reluctor ring and sensor - so it's either sensor, wiring, ring or position of them.

Check also that the near bearing doesn't foul on the rear brake shoe back plate which causes the bearing to sit at an angle... (i.e. the footprint of the new bearing is bigger so the back plate is trapped between the bearing and trailing arm.....)

[Dancake]

What brand of wheel bearing did you use, and did you check that it was the correct type? Front wheel drive vehicles don't tend to have reluctor rings on the rear wheels. The magnetic pickup is normally built into the bearing. If the frequency is different from the OEM specification it could cause the issues you describe. In some cases new wheel bearings don't even have the magnets installed (some of the cheaper brands). Ideally you need a code scan and/or live data session to pinpoint the cause of the problem. A damaged ABS sensor is also a possibility.

[Tannaton]

Not sure if the P2 V70 is exactly the same but this may help:

https://forums.swedespeed.com/showth...tons-of-photos