TPMS trouble, makes 4 chimes after startup

[sjhdu]

Hi folks,

My 08 Ram 1500's TPM system started acting up one day for no obvious reason (tire pressure was good). It would make 4 chimes shortly after startup and the tire light would remain on afterward. I've proceeded to have all 4 sensors (they were at least 8 years old) replaced by a tire shop, hoping that would fix the issue, but nope. After driving on the freeway for over 30 miles the trouble persisted, (the manual calls for up to 10 minutes at speed 15 mph or greater.) I'm going back to the shop to have them reprogram the TPMS but worry it may need a module replacement (WCM maybe?) Has anyone experienced this before?

Thanks!

 

[HarryS]

Does the light flash, or just come on steady?

 

[sjhdu]

Does the light flash, or just come on steady?

The light comes on a few seconds after startup and stays on, never flashes. So it's like the truck thinks it has low-pressure tires, all 4 of them, even though they were never close to being low.

 

[HarryS]

You may have to have the sensors reprogrammed. I have a friend with a 2009 Ram and it has the same problem.

 

[sjhdu]

Shop performed a reset (WCM I suppose) and so far so good.