After replacing 2 TPMS sensors check every tire warning turns on

FGR8FRK

MEMBER
2007 CHEVROLET IMPALA
3.5L
6 CYL
2WD
AUTOMATIC
118,000 MILES

After replacing 2 TPMS sensors and following the relearn procedure (remove or add air) successfully, every time I start the car it gives me a warning to check every tire. When I scroll through the info system it shows all tires at the set pressure for each wheel and is confirmed at the tire itself.

5 Replies

KASEKENNY

MECHANIC
18,907 POSTS

Unfortunately deflating the tire and reinflating it will not relearn the sensor. I attached the process to replace the sensor for your review and then I also attached the relearning procedure.

The module may be able read the sensor but it needs to learn the position of each sensor. If this has not been learned then it just places the pressures where it thinks they are. However, we need to learn the positions of each sensor and not the ability to read the pressure.

Let's run through this material and let me know what questions you have. Thanks

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Thursday, February 18th, 2021 AT 5:48 PM

FGR8FRK

MEMBER
42 POSTS

I've tried both ways (air reduction and relearn tool) several times with the same results. I get the horn beeps with the 2 beeps after the left rear tire but I still get the alert on the info screen to check all 4 tires. I've painstakingly confirmed that each tire reading is in the correct spot by individually adding 10 #'s to 1 tire, driving and seeing that 1 tire had increased, doing that for each wheel. I've rotated tires myself and relearned them in the past via the air method and never had an issue until now. I've disconnected the battery for hours, I've tried tying the positive and negative together to hopefully drain any residual power. Is there a way to reset the TPMS module?

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Saturday, February 20th, 2021 AT 10:22 AM

KASEKENNY

MECHANIC
18,907 POSTS

Unfortunately there is no module reset on your vehicle. I suspect you are referring this the previous style system which is shown in this video.

https://youtu.be/jeSMJIaTJUw

If the sensors have been learned and the message is still there then we need to scan for codes, as I suspect we have a module issue.

https://www.2carpros.com/articles/checking-a-service-engine-soon-or-check-engine-light-on-or-flashing

Let's check for codes and go from there.

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Sunday, February 21st, 2021 AT 4:59 PM

FGR8FRK

MEMBER
42 POSTS

Finally able to check for codes and there were none relating to my issue.

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Tuesday, March 23rd, 2021 AT 4:04 PM

KASEKENNY

MECHANIC
18,907 POSTS

The most likely cause of this then is the module. Back then these systems did not have a lot of technology to determine if the module was faulty. So the module would just report codes on the sensors when they were not reporting.

However, if this all started after replacing the sensors it could be them as well if you used aftermarket sensors. What was the reason that you replaced them? Were they not reporting and have codes for them?