Had to take the Carrera S out for a spin today (finally some nice weather - read no snow and Ice) and got a tyre pressure warning:



I knew there wasn't anything wrong, as I checked before getting into the car and because the current pressure shows correct pressure:



So, how do I get rid of the Error message as it keeps popping up (even after I have left the car for 20 min or so)?
Tried to hold the little right roller button in, for quite some time, but did not reset...

 

Do you have the correct tire pressure target set based on full or partial load in the vehicle section of the PCM?

 

Great question @shrimp money - No, I have not changed anything in regards to the tyre settings (neither Hardware, i.e. pumped air nor made any setting changes in the PCM), so I guess my answer would be yes (i.e. correct tyre pressure setting).

The weird thing, is that the pressure reads 2.0 Bar for both the left and right front tyres, but then the left is indicating an issue with the pressure.

 

You would need a tool (such as an autel reader) that can calibrate TPMS systems. Could be a faulty sensor..

One thing you can do to try. Put about 5lbs of pressure in the tire that is showing low, recheck and see if that clears the code.. Then let out the 5lbs and recheck and see if that cleared it up. You will have to do a quick drive in between filling and letting air out (you have to drive around 20mph)...

If that does not reset it - you likely have a faulty TPMS sensor. Also check manually the pressure as well just to be sure it is reading correctly.

Otherwise unless you have a calibrator, you will need a trip to the dealer to rectify.

 

I have exact same problem intermittently on my GT3. Its annoying. I switch to a different tyre setting (press roller switch on steering wheel in the tyre pressure display whilst stationary) such as winter/summer/comfort and then back to the original setting when recalibrated - takes about 10 mins of driving.

 

Sometimes you have to put 15 to 20 miles (or kms) on them before they reset.

 

The reset was quite easy and pretty forward in the end... Did what @Mercuriell advised - except directly in the PCM - and switched back to what it was. The error went away straight away (and have also stayed away since the tick/untick "trick")...