Hello, according to the previous owner also the supplied winter tyres are equipped with pressure sensors. Since the change of the tires my P. (Bj 11/2006) tries to re-learn the pressure, but after 5-10 minutes breaks off with the message “system malfunction”. Until the change of the tires everything worked (also the re-learning of pressures), so I suspect the error with the tires.This I had now 10 times exerced, and ask me now whether the sensors were installed at all or the batteries are finished. The tires have still 7 mm profile and were raised only last autumn. The 17″ rims also look very new. The valves are made of rubber, not like with my 19inch Omanyt made of metal. I still have an OBD2 KKL cable for our Polo. Can I check with this the sensors? Which software do I need to do this? A propos: Probably there are already similar questions here in the forum but my keyword search returned no satisfactory answers Many thanks Moseltaler