So my TPMS light came on in the cluster. All tires have correct tire pressure. I reset the TPMS, but still can't get the indicator to turn off. So my best guess is that my TPMS are dead (I think they have a 4-5 year battery life). Any way to turn them off? I frankly don't care if I have them.

 

I think you can deactivate with a star computer but I doubt the dealer will disable a safety feature.

 

I still have full bumper to bumper, but I have aftermarket wheels. I hope they'll cover them.

 

Make sure your in the limit of 32 for the front and 38 for the rear. Then try and reset them. If it still comes on, doesn't the read out of the tire pressures show you which tire is low?

 

How do you get a read out of the tire pressures? I don't think tire pressure is the issue. I've gone 6 months with the current tire pressure and had no issues until now. Checked them all and they are all 38 all around.

 

OK, so I am hoping that someone can shed some light on the TPMS issues.

I recently purchased a new set of wheels and TPMS sensors. I had the dealer look up my serial number and verify that I need the 433 mhz sensors. I picked up 4 Daimler Chrysler (Siemans) 433 mhz sensors on eBay. These should work on this vehicle. I installed the wheels and for the first 10 minutes or so the car was trying to sync with the sensors. Then all of a sudden I got a Tire Pressure Inactive Message stating that there are no sensors.

Now I can't even re-set the system to have it try to find the sensors again. I am stuck. I have to take it to the dealer for a clunk in the steering anyway, but i thought I would ping the group to see in anyone has successfully gotten past where I am on their own.

Any help is greatly appreciated.

 

All I can say is nothing seems simple on our cars...

 

I recently purchased 4 TPMS sensors online. I had the MB dealer install, mount, and balance 4 new summer tires along with the new sensors. It was necessary to use MB "Star Diagnosis" to "sync" the new sensors.

 

Have you checked spare? I had the problem with a 4-Runner and after checking and rechecking and rechecking the tires on the car I cehcked the spare - 10 lbs low. Filled it and fixed it.

 

I haven't checked the spare. good point. car's at the dealer though.

 

I checked my spare and found that it has a standard valve stem, rubber not metal...so no sensor in the spare from the factory.

 

Wheel sensors have batteries rated for 4-5 years life.

 

I guess I forgot to mention that the four I bought were brand new, in the packaging, never installed.

 

what was the “fix”

 

program tpms out in DAS under CGW menu.