Problem: Tire Pressure Monitor System (TPMS) Keyless - Chevy Cobalt Forum / Cobalt Reviews / Cobalt SS / Cobalt Parts
Problems and Service Talk about any mechanical problems you are having

Closed Thread
 
LinkBack Thread Tools Display Modes
post #1 of 16 (permalink) Old 03-15-2017, 08:14 AM Thread Starter
Prospect
 
Join Date: Mar 2017
Posts: 18
Problem: Tire Pressure Monitor System (TPMS) Keyless

Hi,
I have a 2008 Cobalt LS.
I started the 'TPMS Matching Process for Vehicles
without Remote Keyless Entry (RKE)'

https://www.chevrolet.com/content/da...alt_owners.pdf

Page: 5-62

I can start the process and reach the passenger side front tire:

5. Start with the driver side front tire

6. Remove the valve cap from the tire’s valve stem.
Activate the TPMS sensor by increasing or
decreasing the tire’s air pressure for about
eight seconds. The horn chirp, can take up to
30 seconds to sound. It chirps one time and then all
the turn signals flash one time to confirm the sensor
identification code has been matched to the tire/
wheel position.

7. The passenger side front turn signal comes on to
indicate that corner sensor is ready to be learned.
Proceed to the passenger side front tire and
repeat the procedure in Step 6.
....

Till here everything is good but when I increasing or
decreasing the tire’s air pressure in the second tire/passenger side front tire the horn chirp doesn't come up.

What could be the reason?
Thanks
John44 is offline  
Sponsored Links
Advertisement
 
post #2 of 16 (permalink) Old 03-15-2017, 09:17 AM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
Maybe the battery in that TPMS has finally died. They last about 7-8 years on average.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #3 of 16 (permalink) Old 03-15-2017, 10:46 AM Thread Starter
Prospect
 
Join Date: Mar 2017
Posts: 18
Is there a special battery for the TPMS?
But I don't think it is the battery because I restarted the whole process with all the chirps and signals and once again I reached only that the second light/passenger side front turn signal comes on.
John44 is offline  
 
post #4 of 16 (permalink) Old 03-15-2017, 11:46 AM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
Move a tire from the rear to the front passenger if it works and goes on to the passenger rear you know it's the TPMS. You can't change the battery, it is soldered in place and sealed with epoxy. You'll have to get a new one.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #5 of 16 (permalink) Old 03-30-2017, 04:41 AM Thread Starter
Prospect
 
Join Date: Mar 2017
Posts: 18
Over the weekend I hope I have time to move the tires (Thanks Coby7).

What I want to add is that also this happens:
"When the system detects a malfunction, the low tire warning
light flashes for about one minute and then stays
on for the remainder of the ignition cycle. A DIC warning
message is also displayed."

Question:
In the Owners Manual it says:

"Each TPMS sensor has a unique identification code.
Any time you replace one or more of the TPMS sensors
or rotate the vehicle’s tires, the identification codes
need to be matched to the new tire/wheel location.
The sensors are matched, to the tire/wheel locations,
in the following order: driver side front tire, passenger
side front tire, passenger side rear tire, and driver
side rear tire using a TPMS diagnostic tool. See your
dealer/retailer for service.
The TPMS sensors can also be matched to each
tire/wheel position by increasing or decreasing the tire’s
air pressure....."

Are there two TPMS Sensor Matching Processes?

1) by increasing or decreasing the tire’s air pressure
2) by matching the identification codes to the new tire/wheel location (see text above)?
John44 is offline  
post #6 of 16 (permalink) Old 03-30-2017, 04:51 AM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
If you don't have one of these...



You will need to use procedure; 1)by increasing or decreasing the tire’s air pressure

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
post #7 of 16 (permalink) Old 03-30-2017, 05:10 AM Thread Starter
Prospect
 
Join Date: Mar 2017
Posts: 18
No, I (still) don't have it.
And an OBD scanner? What could it tell me?
Thanks.
John44 is offline  
post #8 of 16 (permalink) Old 03-30-2017, 07:58 AM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
The EL-50448 is a TPMS programming tool for GM. It saves you from deflating or inflating tires to set them in their proper location. You just initiate TPMS programming mode and place it close to the valve stem of the tire that has the park light illuminated and press the white transmit button. Easy as pie.

Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly

Last edited by Coby7; 03-30-2017 at 08:01 AM.
Coby7 is offline  
post #9 of 16 (permalink) Old 03-30-2017, 09:37 AM Thread Starter
Prospect
 
Join Date: Mar 2017
Posts: 18
Great tool! Better than increasing or decreasing all the tire’s air pressure and waiting for the chirp.
Thank you very much.

What information could I get about the TPMS with a OBD-Scanner?
John44 is offline  
post #10 of 16 (permalink) Old 03-30-2017, 10:26 AM
Super Moderator
YourCobalt.com Premium Member


 
Coby7's Avatar
 
Join Date: Oct 2011
Location: Magnetic Hill, New-Brunswick
Posts: 11,820
Garage
Nothing, most OBDII scanners don't communicate with the RCDLR module unless it's a TechII.


Every minute spent angry is a happy minute lost for ever and ever!!!
Drives 2016 Cocoa Buick Encore 1.4L Turbo auto KL4CJDSB2GB652675
Drives 2016 Sunset Orange Trax LT1 1.4L Turbo auto 3GNCJPSB8GL142716

Never drive faster than your guardian angel can fly
Coby7 is offline  
Sponsored Links
Advertisement
 
Closed Thread

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome