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Old 04-06-2014, 10:31 AM   #1
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TPMS alert…..

the brass of my Pressure Pro TPMS sensors are in contact with Aluminum valve stems on my Jeep. Apparently some corrosion has occurred because of these two metals in contact, thus I can't remove the sensors on two of my wheels.

We are still traveling at the moment, so I'm afraid to twist with too much force to try to free them.

If I can get them loosened, I'll be using some sort of grease on those sensors to try to prevent the corrosion in the future.
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Old 04-06-2014, 11:30 AM   #2
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Just fyi, many/most manufacturers of TPMS systems have separate sensor models for brass and aluminum valve stems to prevent this problem.
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Old 04-06-2014, 12:20 PM   #3
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TPMS alert…..

Try calling the manufacturer....... they should have a fix. It probably is not the first time they have been asked that question.
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Old 04-06-2014, 12:38 PM   #4
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Don't attempt to remove the sensor unless you're someplace (i.e. tire shop) where the valve can be replaced if/when the sensor breaks off some of the corroded aluminum valve and you lose air.

Been there, done that with the galvanic corrosion caused by the brass valve cap on the aluminum tire pressure sensor valve stem ($110.00) on the Lexus SUV. Weakened to the point that the end of the valve broke off when the cap was removed. Now I use plastic valve caps.
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