2020 Audi Q7 ELECTRICAL SYSTEM,SERVICE BRAKES

TWO ISSUES: THE SMALL PORTABLE AIR PUMP THAT CAME WITH THE CAR WOULD BLOW THE FUSE TO THE 12V CIGARETTE LIGHTER. AFTER A NEW FUSE IS PUT IN, THIS WOULD HAPPEN ON ABOUT EVERY THIRD OR FOURTH TIME OF USING OF THE PUMP. I HAVE REPLACED ABOUT 5 FUSES ALREADY. THE SECOND ISSUE IS THE SQUEAKING OF THE REAR BRAKES WHEN BACKING UP DURING COLD OR HOT. HOWEVER, IT DOES HAPPEN MORE WHEN COLD/IN THE MORNING. A FACTORY DEALERSHIP HAD LOOK AT THE ISSUE BUT FOUND NOTHING.