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Cadillac STS Forum - 2005 through 2012 Discussion, HELP TPMS Reset in Past Cadillac Vehicle Discussion; I picked up a Kent-Moore J-46079 service tool on Ebay. It performs resets as well as analyzes both the TPMS ...
  1. #31
    dkozloski's Avatar
    dkozloski is offline Cadillac Owners 10000+ Posts
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    Re: HELP TPMS Reset

    I picked up a Kent-Moore J-46079 service tool on Ebay. It performs resets as well as analyzes both the TPMS transmitters and the RCVR in the car. DIY can involve investing in tooling just like professionals have to do.
    Don't mess with Binky Bear!


  2. #32
    EChas3's Avatar
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    Re: HELP TPMS Reset

    The difference between men and boys
    Is the size and price of their toys.

  3. #33
    -STS- is offline Cadillac Owners Member
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    Lightbulb Re: HELP TPMS Reset

    So I just had a similar problem with the tire pressure sensors, having to multiple times go into a nearby gas station to try to relearn, but fail, and just give up and go home.
    I had 37-44 PSI in my 2005 STS (which I just bought), where 30PSI is the correct pressure. Of course, this was easy enough to fix, but I didn't know which sensor belonged to which tire, probably because of tire rotation or maybe tire replacements, and not bothering to relearn the sensors.

    So after a couple of tries, I managed to get the left front recognized, but not the next wheel, therefore three of the wheels read --- XX --- (where XX is RF, RR, LR), and only LF was working.

    After several attempts, and ignoring that the manual says "Chirps ONCE", this is what I found is the best way to get the TPMS relearn to work, where I had no problems at all:

    What you will need:
    - Something to depress the valve center pin with (pen, key, tool), I used the valve cap for this.
    - Remote for car

    1. Drive 20-30 minutes, preferably reaching 30-40 mph for a longer period, this should make sure all sensors are awakened and active.
    2. Locate a gas station, park by the air pump (or drive home to your compressor).
    3. Turn of the car, put in ACC mode (push down once on keyless go).

    You now have less than 15 minutes to start and complete the procedure after parking (before the sensors "go to sleep" and only updates once an hour.)
    When started, you have 1 minute per wheel, and a total of 5 minutes from when the procedure was started to complete all wheels.

    4. Remove the air valve caps from all wheels.
    5. Close the door, on remote: lock, unlock, then hold both lock & unlock at the same time until the horn chirps TWICE
    6. You'll now relearn the sensors by going around the car, letting air out of the valves:
    - Go to the left front tire, let out air for 10 seconds, or until the horn chirps once. (NOTE, the horn can take another 20 seconds before chirping after deflating the tire!)
    - Go to the right front tire, let out air for 10 seconds, or until the horn chirps once.
    - Go to the right back tire, let out air for 10 seconds, or until the horn chirps once.
    - Go to the left back tire, let out air for 10 seconds, or until the horn chirps twice.
    7. Relearn sensors DONE, it should now be working, you can check by putting the car in "on" mode (position 2), if you have keyless go; hold down on the start button for a few seconds.
    8. Refill tires, and check TPMS readings. PS, your tires are warm, you should always check when they're cold. Double check this after being parked for several hours / over night. Atm. your correct PSI could be 2-4 PSI higher than the cold inflation pressure.

    I hope this helps others with the same problem. You might want to try again from step 1 if it didn't work, f.ex. if one of the wheels didn't make the horn chirp. The sensor could need to be awakened, or most likely if driving for a long time, and still not having a successful relearn - You'll need to replace the sensor.

  4. #34
    EChas3's Avatar
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    Re: HELP TPMS Reset

    Easier yet; pop a few $$ for a TPMS tool & add it to your toolbox.

  5. #35
    -STS- is offline Cadillac Owners Member
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    Re: HELP TPMS Reset

    Sure, but this is an easy enough fix for that one time

  6. #36
    GuaymasJim is offline Cadillac Owners Member
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    Re: HELP TPMS Reset

    I am having basically the same problem. Do the locking and unlocking procedure, but when I press both lock and unlock at the same time I get the two beeps. DIC shows LF tp is OK but all of the other three are dashes. It all started with rotating the tires.

    I believe the TPM is a recall item. Am I wrong?

    Thanks for any response!

    Semper Fi!

  7. #37
    KRSTS is offline Cadillac Owners Connoisseur
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    Re: HELP TPMS Reset

    Quote Originally Posted by GuaymasJim View Post
    I believe the TPM is a recall item. Am I wrong?

    Thanks for any response!

    Semper Fi!
    Never heard about that. Sensor battery life span seems to be 5 -7 years. Someone posted a procedure here on how to replace the battery. I am going to try it on a a failed one that I just removed.

  8. #38
    GuaymasJim is offline Cadillac Owners Member
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    Re: HELP TPMS Reset

    I am having basically the same problem. Do the locking and unlocking procedure, but when I press both lock and unlock at the same time I get the two beeps. DIC shows LF tp is OK but all of the other three are dashes. It all started with rotating the tires.

    I believe the TPM is a recall item. Am I wrong?

    Thanks for any response!

    Semper Fi!

  9. #39
    chubbell is offline Cadillac Owners Member
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    My sensors will fail after about 30 minutes of driving. The sensors work fine but the car will drop t

    ----------

    My sensors will fail after about 30 minutes of driving. The sensors work fine but the car will drop the signal. I honestly just ignore it because the actual tpms light doesn't come on so I can just scroll past the malfunction message.

    I do work at Discount Tire so on the odd chance that shutting off the car and restarting it doesn't bring the system back up I just take it in to work and reset the system.

    My suggestion is to take it to Discount Tire and they will reset the system in like 5 minutes and do it for free. Again, that's Discount Tire, NOT Tire Discounters.

  10. #40
    Cadillac Cust Svc's Avatar
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    Re: HELP TPMS Reset

    Quote Originally Posted by GuaymasJim View Post
    I am having basically the same problem. Do the locking and unlocking procedure, but when I press both lock and unlock at the same time I get the two beeps. DIC shows LF tp is OK but all of the other three are dashes. It all started with rotating the tires.

    I believe the TPM is a recall item. Am I wrong?

    Thanks for any response!

    Semper Fi!
    Hello Jim,

    We definitely want you to feel that you to feel that the TPMS on your STS is operating as expected. In addition, I am more than happy to check your VIN by PM for any open recalls. We will be looking for your message and enjoy the weekend!

    Best Regards,


    Brandon M.
    Cadillac Customer Care

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