My abs speed sensor ring, on the front left axle was broken, and I had it removed.I'm wondering if anyone can tell me whether my winter driving mode (the W switch ) or my STC will still function. The W switch lights up red when activated; the STC switch has a green light, but the idiot lights for the ABS and STC are on, on the instrument panel. (not sure whether it's due to the removed ring or whether I have an ABS module problem too. Can anyone help? Thanks
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Re: winter driving mode volvo s80
The ring you mention removed is called the exciter ring and is a vital part of the abs system to work properly so have new ring fitted asap this is why abs light etc is on in the uk this would fail mot safety test i am surprised the garage?? did ot renew this exciter ring? knowing it affects the abs ie makes it none operational should it need to operate ? also if involved in accident? and car brakes are checked this serious fault may have an effect on insurance claim hope this explaines??
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I had same issues on my 99 S80, turned out to be the spline gears on the end of the CV Axles that send signal to Wheel Speed Sensors. Their is one on each wheel, but the ones that gave me all the issues where only the front two. Problem was had to replace the entire CV Axle to be able to get new spline gear, but was only about $60, so was worth it.
one of the speed sensors is bad you need to get it scanned to find what one is bad they only other thing you could look at is on the front axle there is a ring that the front sensor use for a signal look for a crack in the ring
the check engine light is probably related to the abs light. have the car scanned to find out wich sensor is bad. it's probably one of the front wheel speed sensors going bad or the abs module is going bad
most sensors are located at the wheel hub, you should see the reluctor gear mounted on the drive axles in the front, you may need to remove the wheel and rotor to get to it! is it all wheel drive or just front wheel drive, if front wheel drive you should follow the wire that goes to each wheel in the rear, if all wheel drive it may only have one sensor in the transphercase to monitor driveline speed. you really should have some one scan the abs and find out the code/s and diagnose it, just cuase the light comes on doesent mean its the wheel speed sensor, it could be the abs module ect ect..., check the fluid level and make shure its not low and or dirty.
Since the problem started after the shaft was repIaced, I would verify that the new axle that was installed had a reluctor ring on it. Most front drives have the reluctor ring (a toothed ring) for the speed sensor on the outer cv joint. Also want to verify that the connector for the speed sensor was not left disconnected or the wire damaged with the axle shaft replacement. If this is not the case the dealer may be the only choice if you end up having to have a new sensor.
The code is for the Vehicle Speed Signal (VSS). The VSS is produced by the ABS electronic control unit by averaging wheel speed sensor inputs and sending a digital signal via CAN bus to other modules that use the VSS. To test the ABS, a Volvo-compatible scan tool is necessary. If one is not available, the car should be sent to a Volvo dealer for ABS diagnosis.
I can tell you however that most of the cars are fixed by replacing the ABS Control Module.