I have a problem with my 92 BMW 750 where occasionally all the electronic guages in the guage cluster start to malfunction, they basically start flying back and forth from low to high uncontrollably. The little digital screen displays flashing question marks, this happens for a fwe minutes then it appears to reset itself and then the fasten seat belts sign appears like u were to just turn the car on, and the guages go back to normal. It only does this a few minutes every day but i would like to get it fixed. Any ideas??