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Visited the Dealership to talk to them about the gearbox, anyways, they put the car on the rack and said they don't recommend changing the fluid at 42,000 miles/11 years.
I left and started driving home, the TPMS light came on solid.
Got home, check for nails, nothing was found.
Next morning, inflated all tires to 36 psi. Mind you the 2 front TPMS sensors are new, they were installed last year.
Grabbed my Autel TS508WF and scanned all sensors.
Right Rear - completely dead, no reading, no voltage.
Left Rear - Reads but shows battery is very low.
DTC Found: C2172 "Transmitter ID not registered (2nd)"
Consulted factory manual, got to step 9, apparently there is a switch, I believe the circular one with the two arrows on both sides.
3. Removed both rear wheels/tires, took to the tire shop, had them remove the old sensors, install the new ones.
4. Got home last night, re-installed the wheels back on the car, Lowered the car, torqued to 76 lbs/ft
5. Activated the Autel --> Advanced Mode --> Sensor Re-learn.
6. All sensors being detected.
7. Connected to OBD port, turned ignition to ON, wrote data to ECU.
8. Turned ignition OFF, Turned Ignition ON again, Cleared DTC. Turned Ignition OFF, disconnected cable from the OBD port.
9. Started the car, went on a 7 mile drive, TPMS light is still on solid.
Can someone help me to resolve this? I am assuming the error is referring to a 2nd set of tires??? I don't have a 2nd set of tires.
Step 9 in the factory manual for this code says something about the switch, I suppose between the Main set of tires and a 2nd set of tires. What should I do to resolve this and get rid of the code?
No surprise on the batteries dying. They're expected to last 10 years.
The satellite switch is used to cycle through to the TPMS setting for which set of tires you are running and set it to main or 2nd. Page 348 in your owner's manual shows the satellite switch location and page 421 describes the setting process.
Last edited by lobuxracer; Oct 29, 2024 at 12:37 PM.
No surprise on the batteries dying. They're expected to last 10 years.
The satellite switch is used to cycle through to the TPMS setting for which set of tires you are running and set it to main or 2nd. Page 348 in your owner's manual shows the satellite switch location and page 421 describes the setting process.
Thank you, I am going to check all that when I get home in 2 hours.
Does this mean the car is expecting the sensor ID values for the 2nd mode and just not receiving them because the switch is set to main?
Thank you, I am going to check all that when I get home in 2 hours.
Does this mean the car is expecting the sensor ID values for the 2nd mode and just not receiving them because the switch is set to main?
The ID values are loaded into either main or secondary. It sounds like your codes were not all entered into main. This is dead easy with TIS. Not sure about other tools.
The ID values are loaded into either main or secondary. It sounds like your codes were not all entered into main. This is dead easy with TIS. Not sure about other tools.
When I was programming the codes into the ECU, there were options for "Main" and Secondary" on the Autel, I just didn't know WTH all that meant as I am not that versed with this, but it's starting to make sense now.
1. I repeated the relearn process and wrote the ID's the 2nd set.
2. Went on a 10 minute drive, about 7 miles, TPMS light still solid.
3. Got back from the drive, scanned for DTC's, Found 2126 for the Main set, BUT no more 2172!
4. Repeated step # 1, but wrote the ID's to the Main set.
TPMS light gone! No DTC's.
5. Started engine, all is well. No codes, no lights!
Thanks guys!
Next time after you write the id’s to the ECU do not turn the key off. Rescan each sensor in order LF RF RR LR and the light will most times turn off without driving
Code C2172 (TPMS)
Success!
