Anti-Skid and Park Assist going out together on my '05 XC90 V8 AWD
 

Like the title says, I'm getting the "Anti-Skid Service Required" and the "Park Assist Service Required" light coming on. Initially, they came on and I could just turn the car off and restart to turn them off, but it's getting progressively worse. They've been on for the last couple of days. The car seems to drive fine, but I know the backup sensore aren't working.

Weird thing is that they're coming on and going off in conjunction with each other, so there has to be one problem that's tripping both circuits. I've got an appointment Monday for the local dealer to check it, but am scared about what they'll tell me.

It has to be pretty easy to narrow down, with both lights coming on and off together. Any ideas on what it could be?

When my anti skid message came on it was the yaw sensor in the floor under the passenger seat that had failed. From leaking sunroof drain( stupid volvo design)Took close to 2 gallons of water from under the floor matts

Same thing that happened to Rob happened to me. The yaw sensor in the floor under the passenger seat that had failed from leaking sunroof drain. Could be the a problem related to the transmission as well. This vehicle was poorly manufactured. Volvo’s are not the same since the company was sold in 1999.

2005 Volvo V70 T5- "Anti-Skid Service Required" & "Rear Park Assist"

Brought into the dealer today. Was told $726.00 would fix the problem, along with the "Rear Park Assist Service Required" for an additional $399.00.

The Anti-Skid threw a code for the replacement of the "angle sensor," which apparently must be programmed by Volvo software. My dealer states that this is located inside of the steering column, and not the floorboard as stated here in this thread. My mechanic, who I trust, feared this would be the case and after some research he confirmed it. I felt it a bit expensive considering its a sensor, but I was able to negotiate for around $900.00 to fix both. Didn't want to wait any longer as I just purchased the car and replaced the timing belt (negotiated during purchase) only 48 hours ago.

The Rear Park Assist was reported to be heavily corroded. Currently not sure what the fix is here, but I will update later if I get a better understanding of what they are replacing/fixing.
-I have done some other research in which members are reporting that the clogging of the sun roof "drainage" lines can cause internal water damage/flooding. My dealer had no knowledge or rumor of this being the case.

The drains are located behind the plastic A-Piller trims on the left and right sides. They leak where the clear tubes meet the rubber fitting that passes through the A-piller to the exterior. Remove tube from fitting clean out and silicon together.

This is on a XC90 ,Not famillar with V70.

Rob

Anti skid temporary off
 

S40 2004 model would show anti skid message and stalls as if losing power, as, soon as I turn the engine off it wouldn't restart. What could be the reason for that?