Correction: Maybe I don't have DSTC? Scrolling through more eBay listings, I came across another that shows a picture of a DSTC button on the lower dash, beneath the radio and next to the rear headrest button. I don't have that button. But I do get a DSTC ON message when I put the key on, and DSTC SPIN CONTROL OFF due to the fault.

So does my car have DSTC or not? I guess I could pull the steering wheel off and see how many plugs, that seems like a surefire way but it's nighttime, it's raining, and I get restless when I'm researching these things. I'm sure most of you can relate to that. Of course this can't wait until tomorrow!

 

I had a similar problem on my ex S60. I had a diagnostic error "steering wheel angle sensor internal fault". With diagnostics, I calibrate the sensor and the error is cleared, but as soon as I move the steering wheel, the error is active again.



I was looking for used sensors, but I saw that there are three or four models for that type of car and that you should search by catalog and serial number, and then I give up on the used one.

So, disconnected the battery, removed the airbag from the steering wheel, removed the steering wheel, removed the sensor and tried to see what was wrong with it.



1. Remove the sensor

2. Removing the central ring

3. Disassembling the back of the sensor

4. Disassembled sensor

5. Main board sensor connector

6. Optical sensors on the board

The optical sensors were full of tiny plastic shavings as the sensor ring rotates with the steering wheel. I lightly wiped it with alcohol and dried it. And on the main connector on 4 pins, the solder broke and did not have good contact with the printed circuit board. Re-soldered all the pins, assembled everything, put it back on the car, canceled the error and thank God everything works. It's just information if someone needs it

 

I had a similar problem on my ex S60. I had a diagnostic error "steering wheel angle sensor internal fault". With diagnostics, I calibrate the sensor and the error is cleared, but as soon as I move the steering wheel, the error is active again.



I was looking for used sensors, but I saw that there are three or four models for that type of car and that you should search by catalog and serial number, and then I give up on the used one.

So, disconnected the battery, removed the airbag from the steering wheel, removed the steering wheel, removed the sensor and tried to see what was wrong with it.



1. Remove the sensor
View attachment 179313


2. Removing the central ring
View attachment 179314


3. Disassembling the back of the sensor
View attachment 179315


4. Disassembled sensor
View attachment 179316


5. Main board sensor connector
View attachment 179317


6. Optical sensors on the board
View attachment 179318


The optical sensors were full of tiny plastic shavings as the sensor ring rotates with the steering wheel. I lightly wiped it with alcohol and dried it. And on the main connector on 4 pins, the solder broke and did not have good contact with the printed circuit board. Re-soldered all the pins, assembled everything, put it back on the car, canceled the error and thank God everything works. It's just information if someone needs it

I had a similar problem on my ex S60. I had a diagnostic error "steering wheel angle sensor internal fault". With diagnostics, I calibrate the sensor and the error is cleared, but as soon as I move the steering wheel, the error is active again.



I was looking for used sensors, but I saw that there are three or four models for that type of car and that you should search by catalog and serial number, and then I give up on the used one.

So, disconnected the battery, removed the airbag from the steering wheel, removed the steering wheel, removed the sensor and tried to see what was wrong with it.



1. Remove the sensor
View attachment 179313


2. Removing the central ring
View attachment 179314


3. Disassembling the back of the sensor
View attachment 179315


4. Disassembled sensor
View attachment 179316


5. Main board sensor connector
View attachment 179317


6. Optical sensors on the board
View attachment 179318


The optical sensors were full of tiny plastic shavings as the sensor ring rotates with the steering wheel. I lightly wiped it with alcohol and dried it. And on the main connector on 4 pins, the solder broke and did not have good contact with the printed circuit board. Re-soldered all the pins, assembled everything, put it back on the car, canceled the error and thank God everything works. It's just information if someone needs it

Well done man! I might have to do the same since a brand new SAS from the dealer is $800 Australian P/N31313083

 

That's great info. I'm definitely going to try cleaning first before shelling out for a replacement.

 

And be sure to check the pins on the printed circuit board. I had a broken solder on four pins

 

I know that there's models with DTSC, models like mine with STC and I wasn't aware of ones with neither. They aren't interchangeable to my knowledge due to each anti-skid system probable has different sensors. I would try what's suggested above if you're comfortable with that. If that doesn't work, then one of the eBay ones, but make sure it's one that's compatible with your model for sure. Good luck!

 

Mine went bad. I had a Volvo doctor determine that it was the same part number for several cars with same options and so he found me one from an xc90 in a car yard and it’s been awesome ever since. Mine acted up in hot weather. 35 bucks versus new. Winning!

 

Wow, $35! How good is that!!!

 

Very true!

 

I may try this as well, thanks for posting this.