Two Toes

How do you recalibrate the C7 TPMS ?

JerryU

Hmm, did not think it was possible to "calibrate."

And if it was- what would you calibrate it with?

Or perhaps like in favorite move, "My Cousin Vinny," and Mirisa Tomie's statement, that the gauge used was calibrated a split second before use by the State and Federal Bureau of Weights and Measures and is "Dead-On ***** Accurate." An industry term, according to her!

Maxpowers

There was a thread on this not too long ago. The consensus was they could not be calibrated. I think one guy said he was successful at doing so but he didn't respond to "how".

George Washnak

What makes you think they need to be recalibrated? I had one sensor fail to give any reading at all on my C5 and was able to reset it by running a kitchen refrigerator magnet around the sensor while it was in the rim. True story. No such issues with my C6 (ten years) or my new C7 (2 mo.).

eboggs_jkvl

1. start car - actual engine running - not the Acc mode
2. Select the tire pressure display in the DIC.
3. Press and hold the SEL button until the display changes and the horn beeps. It now says it's in learn mode.
4. Now drive just as it says in the manual - 10 min or so above 12 mph.
5. Suddenly, it will find all 4 sensors and show pressure
6. when you shut the car off , the "learn DIC" will show again and horn beeps.



Elmer

GTFD2

The above is done when you rotate tires. It teaches the tire position. Does not calibrate the TPMS

JerryU

As I note in my prior post, "what would you calibrate it with?"

Common practice in industry to have gauges calibrated and certified annually against a known standard. Not cheap and a good business.

I use a technique also employed when buying an aquarium thermometer. Look at all those on the shelf and pick one that is closest to the median. Sometimes have to not include a high or low! Not perfect but better than nothing.

For my tire pressure gauge, occasionally will measure a tire with the four I have. My $60 Jegs didgital is usually close to the average and within a pound of the Vette display readings-good enough! It reads to a tenth so makes me feel better! At least it is a good comparison.

For the Vette and Street Rod I use a large analog gauge that is connected to Teed hoses the balance two tires! For the Street Rods wide rear tires that is only 16 psi.

Foosh

That process hasn't been necessary when I rotate my tires or change between my winter and summer tire sets. The car automatically recognizes whatever sensors are on the car with no action required.

Bill Dearborn

The real question is do you mean recalibrate as to make sure the sensors are reading the air pressure accurately or do you mean reprogram them?

Tire pressure sensors are calibrated about as close as any tire pressure gauge is calibrated when they are built. Hand held gauges can be sent to a calibration lab to be calibrated to a known standard but that can't be done with the tire pressure sensors.

If you mean reprogram them that is a misnomer since the gauges aren't programmed the car is programmed to recognize each gauge and where it is located. On the C7 this is done automatically by driving the car.

Bill

Two Toes

OK, my choice of "recalibrate" was incorrect. I am replacing all tires and wheels next week. My previous four Corvettes had procedures for the RESET of the TMPS. But since I have found articles on the internet stating "not all C7 automatic reset works correctly". Therefore, I reached out to you guys for your experience, expertise and English lesson.

eboggs_jkvl

Ok, then you are back to my post (#5?) on how to get the car to "see" the sensors again regardless of where any sensor is placed after the tires are changed.

Elmer

CP

Damn, Elmer, is there anything about these cars you DON'T know?

eboggs_jkvl

I just take damn good notes on what I read!


Elmer

Two Toes

Thanks Elmer, I will follow your instructions.

Boozman

I put new rims, tires, Tpm when I got home the were reset

p3pilot

I can confirm that as well. Put new wheels with brand new TPMS's on my car today and it learned them pretty quickly.

sTz

^^^ This.

eboggs_jkvl

Owner's Manual 10-56

TPMS Sensor Matching
Process — Auto Learn Function

Each TPMS sensor has a unique
identification code. The identification
code needs to be matched to a new
tire/wheel position after rotating the
tires or replacing one or more of the
TPMS sensors. When a tire is
installed, the vehicle must be
stationary for about 20 minutes
before the system recalculates. The
following relearn process takes up
to 10 minutes, driving at a minimum
speed of 19 km/h (12 mph).
A dash (-) or pressure value will
display in the DIC. See Driver
Information Center (DIC) on
page 5-23 and Tire Messages on
page 5-39. A warning message
displays in the DIC if a problem
occurs during the relearn process.


Elmer

Foosh

Well Elmer, regardless of what the manual says, all I can tell you is that I bought new wheels, new TPMS sensors, and new MPS AS3+ tires, had them mounted and balanced, brought them home, bolted them on myself, and did absolutely nothing to have them recognized instantly as soon as I started the car and before it moved. The pressures read exactly what I measured with a tire gauge on each corner.

When I put the OEM PSS set back on a couple of weeks ago, it read the correct pressures on those instantly as well.

jagamajajaran

I had to use the learn mode process when I changed my Grand Sport wheels. The car did not recognize the new sensors until I followed the procedure outlined in the manual.