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Hey so I bought new wheels, tires and TPMS sensors (from TireRack, they are identical to the Shrader ones at RockAuto) for my 07 C6 Z06.
The TPMS relearn has been incredibly annoying, and it’s not working. I have tried 3 different devices:
- the Amazon basic unit
- an Autel at a local tire shop
- the ATEQ VT37 recommended by Tire Rack
The last one allows me to check if the sensors are even alive and I can confirm they all work as expected.
When I put the car in relearn mode (accessory mode and then hold lock + unlock until the honk), it’s completely random. Sometimes just the first wheel (front driver) triggers the hook. Sometimes the second one too. One time the second wheel (front passenger) triggered a honk but not the first, and the third worked too (rear passenger) but not the fourth (rear driver). And many times, it just doesn’t honk at all. Nothing.
It drives me nuts. I’m seriously losing my mind on it because I know the sensors are working and randomly the car will manage to recognize one or two at a time.
Has anyone ever dealt with that? And hopefully has a recommendation?
Thanks in advance!
Last edited by herwawan; Jan 15, 2025 at 01:43 AM.
What after markets in the car, hence have any of the bulbs been changed out to LEDS, or maybe even an after market radio.
The RCDLR has an antenna in the glove box, the left and right hand side of the car about the gas door location, and one on the back of the cubby on the back wall under the cubby. Some on the after market Leds, and other device like after market radio's put out enough RF noise, that it can block the TPMS signals.
Hence if you can read the TPMS with the scan tool and trigger them, know for sure that TPMS are the correct model for the year of of the vet, then something is blocking the TPMS signals from the RCDLR antenna's picking up there signal so the RCDLR can register/lean them.
My GOD. I put the car in relearn mode, turned off the aftermarket head unit, opened the glove box, shut the doors to not have the LED lights on…
AND IT WORKED PERFECTLY AT THE FIRST TRY.
Man, you have no idea how happy this makes. It’s been weeks I’ve been tinkering with that. Honestly it needs to be a sticky, I can’t be the only one struggling with this.
Thank you, really!!!
Originally Posted by Dano523
What after markets in the car, hence have any of the bulbs been changed out to LEDS, or maybe even an after market radio.
The RCDLR has an antenna in the glove box, the left and right hand side of the car about the gas door location, and one on the back of the cubby on the back wall under the cubby. Some on the after market Leds, and other device like after market radio's put out enough RF noise, that it can block the TPMS signals.
Hence if you can read the TPMS with the scan tool and trigger them, know for sure that TPMS are the correct model for the year of of the vet, then something is blocking the TPMS signals from the RCDLR antenna's picking up there signal so the RCDLR can register/lean them.
Now that you have the tpms relearned, need to go back to find which builbs or if head unit is putting out the noise, since still going to be blocking the signal when they are on, still going to cause problems with RCDLR not being able to pick up the signal while driving still..
It is a Kenwood Excelon, not sure which reference specifically. It does have the steering wheel controls so I'm assuming there's a module for that.
OH great that's what I have also with the pac5 for steering wheel buttons also. Mines like ddx9009 or something but Excelon too. So if it happens to me, just keep radio off? Just pre planning here.
OH great that's what I have also with the pac5 for steering wheel buttons also. Mines like ddx9009 or something but Excelon too. So if it happens to me, just keep radio off? Just pre planning here.
Yes I just turned it off with the power button and that solved it!
After market radios putting out RF noise to cause problem with RCDLR is not new, and in some case, you have to wrap the head unit with tin foil, to build a Faraday shield around it to block the electromagnetic field that is putting out/blocking the Fob/Tpms signals.
TPMS relearn doesn’t work
