Xxxxx Problems of Volkswagen Routan

I have a Volkswagen 2009 vw routon van. . . Aka rebadged Chrysler Mini van. The oem tpms has a non-anodized aluminum valve retaining nut which cracked and caused a deflation at highway speed on the front driver side tire. To have a safety device that causes an unsafe condition and a catastrophic failure that could lead to injury or death is unacceptable. I have inspected the other three retaining nuts on the valve stems and found one that is cracked and the the others have severe corrosion that will need repaired and replaced. A rubber and brass valve stem that was true and tried and "safe" for so many years was the accepted norm to be replaced when you put new tires on a vehicle. I now find myself asking, have engineers ignored and forgotten the principles of corrosion and the environment has on aluminum metals to make such a tire pressure monitoring system, that is set up to fail?.

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The contact owns 2009 Volkswagen Routan. The contact stated that three of the tire pressure monitoring air valves fractured. The contact stated that two of the failures occurred while placing air in the tires and another failed on its own. The vehicle was taken to the dealer. The technician replaced the valve stems but failed to indicate what caused the failure. The failure mileage was 60,000.

Recently I noticed a low tire pressure on the left front wheel of my Volkswagen Routan. When I attempted to add air to the tire, the stem pushed into the wheel and the tire deflated. The metal tire pressure stem is attached to tire pressure sensing units on each wheel. When I examined the stem I noticed that the nut that locks the stem in position had disintegrated from corrosion. The only thing holding the stem in position was the pressure within the tire. When the stem was touched and moved, the tire immediately deflated. I found the same defect on the other wheels. Any contact with the tire pressure servicing stem, caused the retaining nut to break off into pieces. Each stem and retaining nut showed signs of severe corrosion. Due to the extreme high cost of replacement sensors, I was forced to replace the sensors with standard rubber tire stems. The vehicle is a 2009 with only 36,000 miles. The vehicle is exposed to road salt and I’m sure that accelerated the corrosion of the attaching nut, but this is a serious design flaw that might result in a tire deflation without warning. I feel these sensors are defective and need to be recalled. This is a single vehicle with low mileage, having four severely corroded and failed tire pressure sensors. I suspect there are many others. These faulty sensors could very well be the cause of a serious accident or injury. It seems to be a known issue with the car dealer but I don’t believe there is any specific inspection or service requirements for these valves/sensors. The parts are marked with the following identification numbers: daimler Chrysler 56053031ad #0193ht-2 siemens vdo I have saved the failed parts and I will provide them if required.