Tpms light -
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post #1 of 4 Old 05-02-2016, 06:29 AM Thread Starter
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Tpms light

I have a 2007 Grand Cherokee and this weekend the TPMS light came on for the LR tire - stayed on for 15-20 seconds and went off - another 30 miles or so the light came on showing the RR tire - same thing 15-20 seconds and went off. this morning on the way to work the light came on again showing the LF tire. Any advice for whats wrong?

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post #2 of 4 Old 05-02-2016, 11:06 AM
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They could be failing.. they only last 5-10 years.Make sure the tires pressures are up to where they should be..


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post #3 of 4 Old 05-04-2016, 08:24 AM Thread Starter
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Anymore ideas?
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post #4 of 4 Old 05-04-2016, 09:39 AM
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Tom is right. Take it to a reputable tire shop (not the stealer) and have them check the sensors in all the wheels, including the spare if you have the premium system. They'll be able to tell you if the batteries are good and if the sensors are working properly. If the batteries all check out, then you'll have to have the wheel transponders checked (located in both front wheel wells and the right rear wheel well) and also verify that the plugs/wiring to them is all in good order. Finally, if all that checks out, the Wireless Control Module (WCM) is the receiver of all the info. from the sensors/transponders and it decodes the information and determines if a DTC should be set if anything is out of the acceptable parameter ranges. A good maintenance shop should have a computerized diagnostic scanner that will check the whole system (except the sensors which requires a separate tester) and verify each component's status.

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