meadowz06

Disconnected the battery on my 2006 C6 coupe. Now one of the tire sensors(Left Rear) is reading 0 pressure. I have tried 3 scan tools to do the relearn precedure. None have even been able to start the relearn mode. I have put the car in accessory mode, then pressed the unlock and lock button at the same time, then getting 1 horn beep. I then start using the scan tool as directed by the tool. It will not recognize any of the sensors. Remember that all the sensors are working properly EXCEPT the left rear. Thoughts?
Thanks in advance.

Bill Dearborn

Disconnecting the car battery didn't cause the issue. You can disconnect the battery and the car will still remember the sensor ID codes. If these are the original sensors you may be facing a sensor battery end of life situation. There are some higher priced sensor tools that can tell whether your sensors are broadcasting properly but you probably will have to call around to find a shop that has one.

If you need replacement sensors make sure you get GM recommended sensors. Don't get them from an auto parts store. The cheap stuff the auto parts stores sell doesn't last long and they don't cover the cost of breaking down the tire to swap them out.

Bill

meadowz06

Why would the scan tools not pick up ANY of the sensors that are working properly? And these are dealership scan tools. Very expensive. One is a Wurth, Snap On, etc.
Thanks

Dano523

Best guess, either the scan tool in the wrong setting. There is the 2005 to 2009 setting for those year cars, and then there is the 2010 to 2013 setting for those year cars (read two different tpms that the cars have to use, depending on the year of the car, and each has it own tool setting).


Or the TPMS are clones that at not using the standard OEM protocols to trigger them.

For these off standard trigger protocol clones, having a TPMS trigger tool that will cycle through protocols until it finds the the needed one, often works better than a tool that just uses the single standard set OEM protocol to scan the TPMS to trigger it that way instead.

1bdvet

This Friday I took my car to the service department cause keep getting low front tire 9 PSI. They reset tire sensor before I could finish my coffee, and was on my way with no charge.

meadowz06

Reset the sensors. Have 2 bad sensors. Getting them replaced as we speak. I guess it does not matter if two are new and 2 are old and different brands?
Thanks for the replies!

Dano523

When one of mine goes out, I just replace the whole set. Figure if one of the batteries is about deal, the other three are not far behind.

Gene has OEM's for around $50 each, and worth the extra money over the aftermarkets since the OEM TPMS batteries do last longer.