Thank you for the tip about releasing the speedometer and instrument pannel. I have seen periodic malfunction on my spedometer. At times the speedometer did not react, and in af few ocations the speedometer did show speeds of more than 180 km/h vhen driving 50 km/h. After releasing the instrument panel, i sprayed the contacts in the rear of the panel with with contact cleaner for electronic equipment. It did fix the problem. Be shure, to use a cleaner that does not harm plastic components...