Re: TPMS Receiver Replace?
Originally Posted by
mariontr
Ok, like some folks have discussed extensively, I got the TPMS light on the dash this past weekend went to my local mechanic yesterday who used a Autel TS401 but could not read any of the sensors using the Crossfire but when used MB was able to see but not communicate with them. So is this a case of the receiver gone bad, or the case if I understand correctly that the sensors are transmitting on both frequency but that the TS401 may only be reading on one frequency vs both?
I suspect the device mentioned is an OBDII reader. Ask your mechanic if he has a TPMS frequency and power level reader that he can go to each tire, trigger the sensor with a magnet and get the reading if the battery is strong enough. Magnet is the key for the OEM sensors. It needs to be as big as a speaker magnet. This is the only way to know if they work. We cannot assume the RXer is bad just because we cannot read the sensors.
See my sig file for TPMS 101. I used the Schrader's when I did mine. Tire rack put them in, the local dealer with the OEM DRBIII synced the car to the new sensors.
IMG 1586 Magnet over the valve stem
Last edited by KDW4Him; May 12, 2020 at 08:45 AM.