Several times over the last couple years I've noticed the high beams won't work and the turn signal only goes 3 flashes. This will not change until you stop and shut off the car, let it go to sleep, then restart. This usually corrects it. However sometimes it doesn't. Then the next time you get in the car they work again. Is it the stem switch in the steering column? Has anyone experienced this, and fixed it? 2007 525xi