TL* THE CONTACT OWNS A 2016 MERCEDES-BENZ GLC300. WHILE DRIVING 5 MPH, THE BRAKES MALFUNCTIONED WITHOUT WARNING. THE CONTACT DEPRESSED THE BRAKE PEDAL AND THE VEHICLE SURGED FORWARD INDEPENDENTLY. AS A RESULT, THE VEHICLE CRASHED INTO THE CONTACT'S BARN. THE AIR BAGS DID NOT DEPLOY. A POLICE REPORT WAS NOT FILED. THE CONTACT SUSTAINED SEVERE WHIPLASH TO THE NECK AND WRIST PAIN FROM THE CRASH. MEDICAL ATTTENTION WAS REQUIRED. THE VEHICLE WAS TOWED TO MERCEDES-BENZ OF FAIRFIELD (2950 AUTO MALL PKWY, FAIRFIELD, CA 94533), BUT THE DEALER COULD NOT DUPLICATE THE FAILURE. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE BY VOICEMAIL, BUT NEVER CALLED BACK. THE FAILURE MILEAGE WAS APPROXIMATELY 6,000.