Hey everyone, I'm having issues with the tpms on my 2015 lexus is350 f-sport and looking for some guidance. I bought an autel ts508wf along with 4 of their tpms sensors, and installed them no problems less than 6 months ago. Worked fine for a bit, then had all 4 pressure readings go out, so I did a position relearn with the tool and they started working properly again. Now, as of recently, all 4 pressure readings are blank on the dash once again. I've relearned with the tool, and checked for codes, but nothing. The tool confirms that ECU and sensor ID's match, and that they are all "awake", so not really sure where to go next as I've never had a problem like this before and can't find much info on it. Any help is appreciated! Thank you

 

Does your tool show the battery status of the units?
New to you, doesn’t mean they weren’t sitting on a shelf for a long time.
Next would probably be the TPMS receiver in the car, loose connections or simply failed?

 

Yes all batteries are fine. I'll take apart some trim near the receiver and see if I can find any bad wiring, and if not replace the receiver. Thanks for the help.

 

If it was a receiver issue I’m pretty sure you would get a flashing light. When batteries get weak they stop showing air pressures usually in colder weather before they die out completely

 

I ended up re-programming the sensors based on the ID's from my summer tires and now they work fine, but that still confuses me. They were working perfectly fine up until recently, so why would they randomly all stop working and need to be reprogrammed? Either way its fixed now so I'm happy but just a bit confused haha