'Tyre Pressure Monitoring Failure' Warning

[Skiddins]

I have just had a 'Tyre pressure monitoring failure' warning come up on the dash.
The pressures themselves are fine, so does anyone have any idea what it might be?

Could it possibly just be the sensor in the wheels itself or does that throw up a different error?

Thanks
Skiddins

[sgould]

I believe that the sensors are fragile.  Although the normal point of failure seems to be metal corrosion where the valve comes through the hole in the allow wheel.

New sensor is expensive.  Possibly worth sourcing from the USA, as long as the radio frequency is correct. Even with the duty payable.

I fitted four winter wheels with no sensors.  As long as all four wheels are without sensors, the car ignores them. So no error messages.  Saab call it "winter mode".  Four second hand wheels may be a cheaper option than a set of new sensors from Saab...

[Skiddins]

Does it have to be a full set of sensors or is there a way to find the one that's failed?

[Audax]

It looks like you can get compatible sensors for less than the price of the genuine Saab article, it looks like they are the same worldwide too which is useful as they are cheaper in the USA. Tech-2 (Saab diagnostic tool which all dealers and specialists will have) will tell you which one has failed (or in what region the fault lies if it's not a failed sensor). Of course the other option is to just have all of them replaced with normal tyre valves?

[Ghostgrassip]

I like this title I like it.