Golf Mk5 GTi - Tyre Monitor display

[dolphins3]

The tyre monitor display light has come on on my 2006 GTI. I've checked the wheels and all tyres seem fine and pressures are spot on. I've reset the system by holding the reset button down and the light goes off.

Same thing happened about 3 weeks ago and I just checked and reset the system.

Is there anything a miss?? or do I just have a dodgy sensor that needs checking out by my local dealer?? Oh, and car is just out of warranty......serviced at VW last month.

Advice welcome for other owners

[dolphins3]

Thanks for the advise, will check the tyres again to see if they've been swapped around