Unfortunately this gremlin has visited our X recently. I'm beginning to realize that the X doesn't like cold weather. I'm basing this on different assumptions so take it for what it's worth.

Different people suggested a couple of tests:

- make sure nothing is blocking the sensors like dirt. Mine are free of obstructions but still have the problem.

- Place your hand near each sensor and you should get a little shock (like static shock) if it's okay. Only one of my fronts does this. Don't know if all were working prior as I had no reason to test them before. I think they were all working fine because the good one now is one of the corner sensors and I didn't have problems with objects directly in front prior.

- place your ear close to the sensor and you should hear a slight click. I don't recommend this (see above)!

- Somebody said sometimes a short in the wiring can cause this too. There's a lot of wiring to check!

There might be more but that's what I've come up with so far. I haven't checked all the back sensors yet.

As far as removing the PDCs there are several threads. I know there was one by ca911. When I get around to trying to fix the problem I'll search more and report back.