I'm trying to decide if I should get new TPMS sensors or not. As the car is new to me I don't know if they are the factory originals or were replaced at the last tire swap by the prior owner. My question is do the sensors have a date stamp on them?

 

Dont they work? If they do why change them?

 

The dealer can tell the battery life percentage using their PIWIS.

The TPMS sensors do have a date stamp on each one but they do not activate until they detect pressure so that they can sit on the shelf before install without running down battery life.

 

yup. I find that these things last about 7-8yrs.

 

I'll ask the body shop to check them - they should have a PIWIS as they do a ton of Porsche work and if not they can walk next door to Sunset and use theirs.