Cadillac STS Forum - 2005 through 2012 Discussion, TPMS sensor in Past Cadillac Vehicle Discussion; I'm having a problem with my TPMS. For several months now, whenever I would be driving more than about 30 ...
I'm having a problem with my TPMS. For several months now, whenever I would be driving more than about 30 miles, I would get the message "SERVICE TIRE MONITORING SYSTEM" & at first, it appeared that the left rear tire pressure sensor was bad because it would display "-- --" & give no reading. After turning the car off & then back on, the sensor would read again & everything would be fine until I drove over about 30 miles at one time. This went on for a few months mostly because I would forget about it because again it wouldn't display a message unless I was driving over 30 miles in one trip which I didn't do daily. I finally took it in to have the sensor replaced on the left rear tire but when I went to pick up the car, the service advisor informed me that they reprogrammed the sensors & everything was working fine & that they didn't have to replace the sensor! I had told him how it had been intermittent when I dropped it off but it was working correctly when the mechanic was working on it. He said try it out & let him know. Well I didn't drive over 30 miles for about 2 weeks but when I did, the message came on again but it wasn't the left rear sensor this time. It was the right rear sensor reading "-- --"! I figured they must have swapped tires or something & didn't pay too much attention to it. It took me a few more months to take it back, again since it was an intermittant problem & didn't really affect anything. Yesterday, I just had them replace the right rear sensor this time, telling them it was an intermittant problem & to just replace it. They did & I drove over 30 miles & guess what happened. Now the left front sensor reads "-- --"!! It seems like whenever they reprogram the sensors, a different sensor reads bad!
This is leading me to believe that its not the sensor but maybe the module that controls it? Anyone have a similar problem?
For Pete's sake the batteries in the TPMS sensors are 8 years old. It's time to retire them out to pasture.
I would definitely have to agree with you! lol I just think its odd that the "bad" sensor seems to float around to different tires. I'm getting the 2 front tires replaced in about a week. I will definitely change those sensors at that time & probably the last rear one too just so I know its not a bad tire sensor! lol