Tire Pressure Monitoring System Problems of Dodge Grand Caravan - part 2

I am a mechanic of 25 years experience and feel the need to report a possible defect that exists on 2008 Dodge caravans. During the last five months I have replaced three tire pressure monitor system pressure sensors. What make this problem alarming is that all three failed in the same manor. The failure occurs when the portion of the sensor called the valve stem fractures and detaches from the rest of the sensor causing a sudden loss of air pressure in the tire. I have photographs and have saved two of the sensors that have failed. I believe the problem is either a corrosion issue or a weak material used in the manufacture of the product causing it to fracture easily in ice and snow.

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1 tpms sensor failed (stem broke) causing tire to go flat instantly. Stem broke while pressure was being checked.

Tire pressure monitor sensor failures in three 2008 & 2009 Dodge Grand Caravans. The valve stem on the tpms snaps off at the threaded portion, causing a rapid deflation of the tire. This occurs when driving on snowy or slushy roads, or when attempting to remove the valve stem cover. This has occurred on three fleet vehicles over the last two months. All three vehicles required purchase of new oem tpms and reprogramming of the new tpms by the dealer. Two vehicles required towing due to unsafe location at time of failure. One vehicle also required replacement of brand new tire that was destroyed at time of rapid deflation.

The contact owns a 2008 Dodge Grand Caravan. The contact stated that while having the tires changed, the tire pressure sensor fractured from the vehicle. The contact stated that the failure recurred several times. The vehicle was taken to local repair shop where the contact was advised that the tire pressure sensors were defective and would need to be replaced. The manufacturer was contacted who did not offer any assistance. The vehicle was repaired. The failure mileage was 60,000 and the current mileage was 109,000. Updated 05/25/11.

Three of the four tire pressure monitoring sensors (tpms) valve stems have failed on my 2008 Dodge Grand Caravan. Two of them failed in October 2009 and one in January 2010, all while attempting to add air. All tires immediately lost all air. The valve stem housing (threaded portion) snapped off. The three tpmss were replaced by the local Dodge dealership. Because I believed this was a safety issue, I requested that the forth tpms be replaced, however, the local dealership and Chrysler hq customer service adamantly refused to replace the remaining one. If the valve stem were to break off while the vehicle is in motion, the results could be disastrous, as the tire would rapidly deflate.

Tire pressure sensor failured. Simply broke off completely while washing car. Possibly effected by roadsalt. Only 3 yrs old made from aluminum? never saw a metal schrader valve holder fail. Luckily failed while not moving. But should not have failed.