What is the true info on the Caravan TPMS? I had a tire valve stem go bad on an 2008 Grand Caravan, standard wheels/tires and the dealer replaced it as well as the sensor (all under warrantee) but this made me wonder what is true about this system (I've looked on the net and get conflicting/incomplete info). So here are some questions:
How long do they last?
Do they run off a battery? (I would think they'd have to).
Can you replace the battery when it dies or do you have to buy a new sensor?
When getting new tires do you have to replace the sensor?
Can you replace the valve stem seperately from the TPMS sensor?
Should you still replace the stem when getting new tires?
Are the sensors specific to each position on the car - if I rotate the tires will I have a problem?
If I eventually buy aftermarket sensors will they work?
What would I have to look for in aftermarket sensors (are there different frequencies?)
Are all 08 Caravan sensors the same?
Will I have to "reprogram" the sensors or the car if I buy new sensors?
Can a shadetree mechanic reprogram the TPMS or does this require the dealer?
Any help would be greatly appreciated.