Swapped to my winter setup: Warning light (DSC and ABS disabled)

[giodog2000]

Took off my summer setup ( the staggered 20's setup for the 4.8). Installed the winter setup which I've been told the 18' would be perfect but after I installed the 18's (I did maybe 10-20 KM), the red warning sign went on and disabled both the DSC and ABS....

Would this have anything to do with going from the 20's to the 18's or is this a completely different problem?

[Brandon002]

You can try putting your 20's back on to see if the lights go off.

[TwinTurboGTR]

The wheels shouldn't disturb the system unless you are not running something right. Are you winter shoes on factory wheels? Only thing I can think of is if you accidentally clipped a speed sensor.

Since the fault is there, changing the wheels will do nothing. You will need to have the system scanned to see what the fault is registering to be accurate.

[upallnight]

There a reason why a warning light is on, get the X scan and find out why the light is on. Lights only come on when there's are trouble codes.

[giodog2000]

Originally Posted by TwinTurboGTR

The wheels shouldn't disturb the system unless you are not running something right. Are you winter shoes on factory wheels? Only thing I can think of is if you accidentally clipped a speed sensor.

Since the fault is there, changing the wheels will do nothing. You will need to have the system scanned to see what the fault is registering to be accurate.

Yes , tires are mounted on factory wheels, but come to think of it, the indy who changed the wheels used a piece of 2x4 to "gently" knock off the front wheels. I'm wondering now if it's possible that he hit a speed sensor.

Where is the speed sensor located?

[TwinTurboGTR]

Speed sensor is located on the hub itself. Hitting the tire with a 2x4 shouldn't harm it. Its a robust piece of steel there, unless the guy missed and hit the inner fender. From there all bets are off.

If you can, take the X to have the codes taken out and see what they are. From there it should give you a general idea of what the problem is.

I mean I'v kicked the wheels off, taken dead blow hammers to the hub and such and everything has been fine. But if he missed or used the 2x4 between the spokes and tried to pry it off, he may have nicked something. Right now these are all guesses and it is best to have the codes scanned. In your neck of the woods, no DSC and ABS is very dangerous. So be careful, but if you wanna put a smile on your face after a long day at work... the occasional throttle blip in an open freeway shouldn't be a problem. lol

[4.8isX5]

Im going to say they probably are but doesnt hurt to check,


18s all around and all running the same tire size correct?

[swissfrank]

scan the codes is what i would do, just to be sure. dsc and abs are good to have in the winter

[giodog2000]

It's very tempting to put my 20's back on like someone suggested cause when I bought the X last year ( end of February ) the 4x4 warning sign was on with the winter setup ( I used the same wheels that came with the X) . Because winter was over I decided to wait until I installed the summer 20's and then have it checked. When I did put them on , everything was fine and the 4x4 warning went away. Only thing different this time is the red warning sign is on as well as the DSC.
I'll probably have to get the codes but I'm still wondering if this can have anything to do with a bad mag???? Arggggg and my 20's are all winterized , polished and clean.....lol

Thanks guys for all your help!

[racingbmwm3]

You didn't mention if your winter tires are all the same size. Mismatched sizes would cause DSC problems and potential damage to your transfer case. The fact that it happened before and putting the 20's back on fixed it makes it sound like you have staggered 18's but the diameters don't match.