Tire pressure warning

[LEFant]

Bought XC60 2 weeks ago. Have taken in three times to two dealers trying to fix tire pressure monitor. They have checked pressure and sensors, and reset warning bit it keeps coming back on if I drive it for more than 20 minutes. Any ideas?

[rdhadj1800]

You may want to recheck the batteries in the sensors. I have a corvette that did the same thing and it turned out to be intermittant battery connections in the sensors themselves.

[740gle]

How does the system work? The owner manual mentions "sensors" on the stems in each tire. Do these sensors run on the batteries?

I get false positives that clear themselves after couple of ignition on/off cycles.
Is there a way to disable the damn thing?

Is there a sensor in the donut?

Thanks,
-Michael