THE REAR AIR BAG LEVELING SYSTEM FAILS WHILE DRIVING AT ALL SPEEDS. THE VEHICLE BOTTOMS OUT SENDING THE REAR END SKIPPING ACROSS THE ROAD IN BOTH DIRECTIONS. I HAVE TAKEN THE VEHICLE TO THE TOYOTA DEALER 3 TIMES. THE SECOND TIME I TOOK IT TO THE DEALER THEY REPLACED THE AIR RELEASE VALVES IN THE SYSTEM AND THAT DID NOT FIX THE PROBLEM. TOYOTA DOES NOT SEEM TO KNOW WHY THIS IS HAPPENING AND HAS BEEN UNABLE TO FIX THE PROBLEM. I HAVE READ OF THIS HAPPENING TO OTHER SEQUOIA OWNERS AND IN THOSE CASES THE DEALER WAS UNABLE TO FIX THE ISSUE. THIS PROBLEM INHIBITS BREAKING AND VEHICLE CONTROL AT LOW AND HIGH SPEEDS. THE AIR BAG LEVELING SYSTEM NEEDS TO BE RECALLED. I AM UNABLE TO FIND A SOLUTION AND AM NOT ABLE TO DRIVE THE VEHICLE. *TR