2012 Hyundai Genesis service brakes, hydraulic problems

“The contact owns a 2012 Hyundai Genesis. The contact stated while driving at an undisclosed speed, the brake pedal was depressed and went to the floorboard, and the vehicle failed to immediately stop. The vehicle returned to normal functionality, but the failure became a regular occurrence. No warning lights were illuminated. The vehicle was taken to an independent mechanic, who diagnosed a failure with the brake booster and brake master cylinder. The vehicle was not repaired. After investigating the failure, the contact related the failure to NHTSA Campaign Number: 13V489000 (Service Brakes, Hydraulic) but the VIN was not included in the recall. The manufacturer was notified of the failure, and a case was opened. The contact was referred to the NHTSA Hotline for assistance. The failure mileage was 22,000.”

“The contact owns a 2012 Hyundai Genesis. The contact stated that while driving at 10 MPH, the brake pedal went to the floorboard while depressed. The contact related the failure to NHTSA Campaign Number: 13V489000 (Service Brakes, Hydraulic). The vehicle was not diagnosed nor repaired by an independent mechanic or dealer. The manufacturer was not made aware of the failure. The failure mileage was approximately 181,000.”

“2012 HYUNDAI GENESIS. CONSUMER WRITES IN REGARD TO NHTSA SAFETY RECALL 13V-489. THE CONSUMER STATED THE VEHICLE WAS MAKING NOISE. WHILE BRAKING. ALL FOUR ROTORS WERE RUSTED AND REPLACED. THE VEHICLE MADE A WHINE NOISE AT COLD STARTS. TRANSMISSION ASSMBLY WAS REPLACED. THE CONSUMER STATED AFTER THE VEHICLE WAS REPAIRED, THE NOISE CONTINUED. THE DEALER ADVISED THE CONSUMER TO TRANSPORT THE VEHICLE TO ANOTHER DEALER TO BE DIAGNOSED AND REPAIRED.”

“Brake system failure. Brake pedal and goes all the way to the floor. Hyundai dealership explained that the HECU has failed. In 2014 there was a recall on this car for this issue, Hyundai Recall 114. This recall was for "GENESIS SEDAN HECU INSPECTION AND BRAKE FLUID REPLACEMENT". The known issue is that the part breaks down over time and just changing the brake fluid doesn’t stop the corrosion process. The HECU part should have been replaced and not allowed to degrade further as it has now done on my vehicle.”

“APPROACHED AN EXIT FROM A PARKING LOT AND THE BRAKE PEDAL WENT ALL THE WAY TO THE FLOOR WITHOUT APPLYING THE BRAKE. WAS ABLE TO PUMP THE BRAKE PEDAL AND GET THE BRAKES TO WORK. THE PEDAL NOW IS ABOUT HALF OF WHAT IT USED TO BE AND REQUIRES PUMPING EACH TIME THE BRAKES ARE USED TO APPLY THE BRAKES. PEDAL IS ERRATIC; SOMETIMES I HAVE ABOUT HALF PEDAL BEFORE A FIRM BRAKE PEDAL. OTHER TIMES IT IS EVEN LOWER. I HAVE NO PICTURES OR DOCUMENTATION TO INCLUDE THAT WOULD BE RELEVANT TO THIS ISSUE.”

“TL* THE CONTACT OWNS A 2012 HYUNDAI GENESIS. THE CONTACT STATED RECEIVED A RECALL NOTIFICATION OF NHTSA CAMPAIGN NUMBER: 13V489000 (SERVICE BRAKES, HYDRAULIC) AND HAD THE VEHICLE SERVICED AT ALL STAR HYUNDAI (3950 CENTURY CT, PITTSBURG, CA 94565). THE CONTACT STATED THAT ONE DAY AFTER STARTING THE VEHICLE, THE BRAKE PEDAL DEPRESSED TO THE FLOORBOARD WITHOUT WARNING. THE CONTACT TOOK THE VEHICLE TO DICK HANNAH VW OF PORTLAND (12345 E BURNSIDE ST, PORTLAND, OR 97233) WHERE THE HYDRAULIC ELECTRIC CONTROL UNIT WAS REPLACED DUE TO THE FAILURE. THE MANUFACTURER WAS NOT NOTIFIED OF THE FAILURE. THE VEHICLE WAS REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 46,000.”