2010 Hyundai Genesis Coupe Brakes Problems

Brakes went completely out while driving, absolutely terrifying. Pedal went straight to the floor and wouldn't stop. I had to manually downshift until it was under 5 mph and then it would barely stop.

The brakes on my 2010 Genesis Coupe suddenly stopped working while on the freeway, luckily I was able to swerve into the carpool lane and avoid an accident. Upon taking it to Tuttle Click Hyundai I was told a master technician had to review it, which would cost $200 just to look at it. When the technician looked at the car, I was told it needed a new Brake Booster. Hyundai apparently no longer makes this part so the dealership had to locate an aftermarket replacement which costs about $1,100. I did note to the dealership that there was recalls on other 2010 Genesis cars for similar issues, but was told the recall was for the sedans, not the coupe and that they/Hyundai would not cover it. Upon installing the brake booster and bleeding the brakes, it was found that I also need a new ABS Module, which will cost up to $4,000 to find and install. Another user posted this same issue to the NHTSA in October 2022.

On September 22, 2022 while traveling at about 65 mph on state highway 57 in CA, I came upon a sudden group of cars hitting their brakes and had to slam on my brakes but my 2010 Genesis Coupe did not stop and I had to swerve into an entrance lane on my right to avoid a serious collision. Fortunately there were no cars entering the highway on that entrance. I was then able to drive a short distance home. On May 26, 2022 I had my car serviced including the brakes by Service Auto Care and my car gave me no brake problems until this incident. On September 23 I brought my Genesis Coupe to Service Auto and explained what happened. The brakes worked fine on the way to the shop. They tested the brakes and said that the ABS module was defective but it was just put under a 15 year extended warranty by Hyundai on May 19, 2022 and to take it to the closest dealer. The dealer, Russell Westbrook Hyundai of Anaheim told me only the sedan was covered. This dangerous defect could occur at any time and cause a severe accident. I hope this report is helpful to the NHTSA and the defective part is replaced without charge. The dealership charged me $205 for an estimate, then wanted $2200 to re-do the brakes and then approximately $4000 to replace the ABS module. I have documents to back up everything I have presented.

The contact owns a 2010 HYUNDAI GENESIS COUPE . The contact stated that while driving his vehicle, his brake system started to make noise and became unresponsive. The contact stated that he then drove his vehicle to the dealer to have his brakes changed. The contact stated that the dealer changed both brakes and, rotors , front and rear, however the failure still exist. The contact stated the dealer advised him of the recall on the same year, make , and model vehicle that was experiencing the same failure NHTSA campaign 13V489000 (SERVICE BRAKES,HYDRAULC). The contact stated that he was advised that the HECU needed to be replaced. The contact stated that he then contacted the manufacturer who advised him that his vehicle was not apart of the recall. The contact stated since then his vehicle remains with the dealer who adivised him to contact NHTSA. The mileage failure was 90,000.

The contact owns a 2010 Hyundai Genesis Coupe. The contact stated that while attempting to stop the vehicle, the brake pedal traveled to the floor and the stopping distance was extended. To stop the vehicle the brake pedal had to be pumped multiple times. The cause of the failure was not yet determined. The local dealer and manufacturer were both contacted regarding the failure and the contact was informed that the VIN was not included in the NHTSA Campaign Number: 13V489000 (Service Brakes, Hydraulic). The contact indicated that the vehicle had experienced the failure listed in the recall. The failure mileage was 79,000.

While attempting to brake on exit ramp off an interstate highway, the brake pedal was depressed almost to the floorboard with minimal slowing. The brakes were pumped several times with slowing vehicle speed. Fortunately, the exit ramp was long enough to allow a safe stop. Pedal remains soft and spongy. No warning lights are on. Brakes functioned normally until this incident at 138,200 miles. However, master cylinder was replaced at 102,000 miles for a similar problem at an independent auto shop. I am awaiting a dealer repair time. [XXX] INFORMATION Redacted PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6).

TL* THE CONTACT OWNS A 2010 HYUNDAI GENESIS. THE CONTACT HAD TO DEPRESS THE BRAKE PEDAL EXCESSIVELY IN ORDER TO STOP THE VEHICLE. THE FAILURE OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO SUBURBAN HYUNDAI (1814 MAPLELAWN DR, TROY, MI) WHERE IT WAS DIAGNOSED THAT THE MASTER CYLINDER WAS DEFECTIVE AND NEEDED TO BE REPLACED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE AND DID NOT ASSIST SINCE THE MASTER CYLINDER WAS NOT PART OF A RECALL. THE FAILURE MILEAGE WAS APPROXIMATELY 50,000.

BACKGROUND: AM ORIGINAL OWNER OF THIS 2010 HYUNDAI GENESIS THAT WAS PURCHASED JULY 31, 2010 AND THAT CURRENTLY HAS LESS THAN 35,000 MILES ON IT. ISSUE: UNEXPECTEDLY, THE BRAKES BECAME "SQUISHY" (I.E. BRAKE PEDAL DEPRESSED A LONG DISTANCE BEFORE ENGAGING BRAKES). ADVISED BY HYUNDAI DEALER THAT IT IS A FAULTY HECU UNIT AND NEEDS TO BE REPLACED FOR $3,800. NOTE: THE BRAKE FLUID WAS REPLACED IN APRIL 2013 AND THE HECU UNIT WAS SUPPOSEDLY INSPECTED IN JANUARY 2014. I BELIEVE THESE WERE DONE IN RESPONSE TO PRIOR RECALLS. THAT SAID, UPON SOME FURTHER READING ON THE INTERNET, I AM UNDER THE IMPRESSION THAT WHEN THIS PROBLEM WAS PREVIOUSLY IDENTIFIED FOR RECALL, THE RECALL SHOULD HAVE RESULTED IN MY HECU UNIT BEING REPLACED, NOT JUST INSPECTED. I INTEND TO RAISE THIS ISSUE WITH THE HYUNDAI DEALER AND, HOPEFULLY, HYUNDAI WILL STAND BEHIND THE REPLACEMENT OF THE HECU UNIT WITHOUT CHARGING ME.

PARTIAL LOSS OF BRAKING - WHILE TRAVELING DOWN THE HIGHWAY AT 45 MPH THE VEHICLES IN FRONT OF ME ABRUPTLY SLOWED DOWN REQUIRING ME TO QUICKLY APPLY MY BRAKES. UPON APPLICATION OF MY BRAKES, I STARTED TO SLOW DOWN AND THEN THE BRAKE PEDAL SUDDENLY RELEASED, PROVIDING LIMITED BRAKING. I CONTINUED TO PUSH THE BRAKE PEDAL TOWARDS THE FLOOR AND THE VEHICLE CAME TO A STOP BUT IT REQUIRED A LONGER STOPPING DISTANCE THAN NORMAL.*BF UPDATED 9/28/18*JB

BREAKS FAILED. TAKING EXIT FROM HIGHWAY AND THE CAR WOULDN'T STOP AS THE BREAKS WOULD WORK. WAS VERY FORTUNATE TO HAVE FOUND GAP BETWEEN TWO LANES AND AVOIDED A MAJOR ACCIDENT. DEALER CONFIRMED THE BREAKS FAILED AND THERE HAVE BEEN NUMEROUS BREAK FAILURES REPORTED WITH GENESSIS. HAD RECENTLY GOT BREAKS CHECKED AND WAS TOLD 'EVERY THING IS FINE'. QUESTION IS WHY DIDN'T HYUNDAI DO A RECALL AND PROACTIVELY REPLACE MY BREAK SYSTEM? ONE WHOLE DAY OF SUSPENSE ABOUT HOW MUCH IT WILL COST ME... AND I WAS TOLD HYUNDAI WOULD COVER THE COST OF REPLACEMENT AS IT WAS A KNOWN PROBLEM. DEALER CALLED IT 'GOODWILL WARRANTY'.

TL* THE CONTACT OWNS A 2010 HYUNDAI GENESIS. WHILE DEPRESSING THE BRAKE PEDAL AND ATTEMPTING TO STOP THE VEHICLE, THE BRAKE PEDAL TRAVELED TO THE FLOORBOARD. THE CONTACT WAS ABLE TO STOP THE VEHICLE. THE VEHICLE WAS TOWED TO THE DEALER WHERE IT WAS DIAGNOSED THAT THE HYDRAULIC ELECTRONIC CONTROL UNIT FAILED AND NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE VIN WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBER: 13V489000 (SERVICE BRAKES, HYDRAULIC). THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS UNKNOWN.

TL* THE CONTACT OWNS A 2010 HYUNDAI GENESIS. WHILE DRIVING 25 MPH, THE BRAKES MALFUNCTIONED. THE CONTACT HAD TO DEPRESS THE BRAKE PEDAL TO THE FLOORBOARD IN ORDER TO STOP THE VEHICLE. THE VEHICLE WAS REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE ISSUE. THE FAILURE MILEAGE WAS 16,000.

PULLING RIGHT WHEN BRAKING. LEFT FRONT CALIPER 90 DEGREES, RIGHT FRONT CALIPER 165 DEGREES. DIAGNOSIS WAS ABS PUMP CORROSION. HYUNDAI HAD A RECALL IN 2014 ON THE GENESIS SEDAN FOR EXACT SITUATION BUT HAVE ADVISED THAT THERE ARE NO RECALLS ON THE COUPE.

TL* THE CONTACT OWNS A 2010 HYUNDAI GENESIS. THE CONTACT STATED THAT APPROXIMATLEY 80% OF THE VEHICLE'S BRAKES FAILED WHILE DRIVING APPROXIMATELY 50 MPH. THE FAILURE OCCURRED WITHOUT WARNING. THE VEHICLE WAS TAKEN TO THE DEALER WHERE IT WAS NOT DIAGNOSED. THE DEALER INFORMED THE CONTACT THAT THE VEHICLE WAS PREVIOUSLY REPAIRED ACCORDING TO NHTSA CAMPAIGN NUMBER: 13V489000 (SERVICE BRAKES) IN FEBRUARY OF 2015. THE VEHICLE WAS NOT REAPIRED. THE MANUFACTURER WAS NOTFIED OF THE FAILURE. THE FAILURE MIELAGE WAS APPROXIMATELY 63,000.

AS I WAS DRIVING DOWN A MAJOR STREET TRAVELING AROUND 35 MPH, THE CAR IN FRONT OF ME BEGAN TO STOP. AS I BEGAN TO APPLY THE BRAKES, MY CAR'S PEDAL WENT TO THE FLOOR. I PUMPED THE BRAKES A FEW TIMES AND BEGAN TO GET SOME PRESSURE, BUT I WAS NOT ABLE TO STOP IN TIME BEFORE REAR ENDING THE CAR IN FRONT OF ME. I NEVER KNEW WHAT THE ISSUE WAS AND I COULDN'T GET THE PROBLEM TO DUPLICATE, BUT THE BRAKE PEDAL WAS SOFT SINCE THAT DAY. I HAVE CHANGED THE PADS, AND ROTORS, SO THOSE ARE NOT THE ISSUE. THIS WEEK, MY FUEL PUMP WENT OUT AND I TOOK THE CAR TO THE MECHANIC FOR THAT ISSUE. MY MECHANIC INFORMED ME THAT THE CAR NEEDED AN ABS PUMP. THE DEALERS ARE WELL AWARE OF THE ISSUE BECAUSE WHEN WE CHECKED THE PRICE OF THE PART ($2600), THE PARTS AGENT IMMEDIATELY KNEW THE PROBLEM. THERE ARE NUMEROUS COMPLAINTS ONLINE ABOUT THE EXACT SAME ISSUE. THIS IS TRULY A SAFETY ISSUE FOR THESE CARS. THERE ARE MANY COMPLAINTS ONLINE WITH THE SAME PROBLEM!!!!!!!

TL* THE CONTACT OWNS A 2010 HYUNDAI GENESIS. WHILE DRIVING 40 MPH, THE BRAKE PEDAL WAS DEPRESSED AND TOOK A GREATER DISTANCE TO STOP THE VEHICLE. THE CONTACT HAD TO DEPRESS THE BRAKE PEDAL MULTIPLE TIMES IN ORDER TO GET THE VEHICLE TO STOP. THE VEHCILE WAS TAKEN TO AN INDEPENDENT MECHANIC WHO WAS UNABLE TO DIAGNOSE OR REPAIR THE VEHICLE. THE FAILURE RECURRED AND THE VEHICLE WAS TAKEN TO A DEALER WHERE IT WAS DIAGNOSED THAT THE HYDRAULIC ELECTRONIC CONTROL UNIT (HECU) NEEDED TO BE REPLACED. THE VEHCILE WAS NOT REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE VEHICLE WAS PREVIOUSLY REPAIRED UNDER NHTSA CAMPAIGN NUMBER: 13V489000 (SERVICE BRAKES, HYDRAULIC). THE FAILURE MILEAGE WAS 38,000.

I WAS DRIVING ON SPRING CYPRESS RD (SPRING, TX) APPROACHING STATE HIGHWAY 249 AT 30 MPH, I STEPPED ON THE BRAKES AT THE INTERSECTION AND THE PEDAL WENT ALL THE WAY DOWN TO THE FLOOR. IF I DIDN'T START PUMPING THE BRAKES, I WOULD HAVE REAR ENDED CAR ON FRONT OF ME. IF THIS INCIDENT HAD HAPPENED WHILE I WAS ON THE SH249 FREEWAY, I WOULDN'T BE HERE FILING THIS REPORT. I WAS ABLE TO DRIVE SLOWLY TO THE HYUNDAI DEALER USING SIDE ROADS.

TL* THE CONTACT OWNS A 2010 HYUNDAI GENESIS COUPE. THE CONTACT REVIEWED A SERVICE CAMPAIGN CONSENT LETTER FROM THE MANUFACTURER, WHICH INDICATED THAT THE HECU WAS TO BE SERVICED AND REPLACED FOR ALL GENESIS VEHICLES. WHEN THE CONTACT CALLED THE MANUFACTURER, THEY SPECIFIED THAT THE GENESIS COUPE WAS NOT INCLUDED IN THAT MANUFACTURER CAMPAIGN. THE CONTACT STATED THAT THERE WAS A RANDOM PROGRESSING FAILURE IN WHICH THE BRAKE PEDAL WAS APPLIED, BUT WAS SLOW TO RESPOND. THE VEHICLE WAS TAKEN TO A REPAIR SHOP. THE MECHANIC DRAINED THE BRAKES, REPLACED THE BRAKE PADS, AND SERVICED THE BRAKE SYSTEM. THE DEALER WAS NOTIFIED OF THE BRAKE SYSTEM FAILURE AND INDICATED THAT THE INDEPENDENT REPAIR SHOP HAD NOT COMPLETED THE REPAIR CORRECTLY. THE CONTACT NOTIFIED THE REPAIR SHOP AND WAS INFORMED THAT THE REPAIR WAS COMPLETED CORRECTLY. THE MANUFACTURER REFUSED TO SERVICE THE HECU SYSTEM PERTAINING TO THE SERVICE CAMPAIGN, SO THE CONTACT WAS UNABLE TO DETERMINE A PERMANENT REMEDY. THE VEHICLE WAS PARKED DUE TO THE FAILURE. THE VEHICLE WAS NOT INCLUDED IN NHTSA CAMPAIGN NUMBERS: 13V113000 (EXTERIOR LIGHTING , SERVICE BRAKES, HYDRAULIC) AND 13V489000 (SERVICE BRAKES, HYDRAULIC). THE VIN WAS NOT AVAILABLE. THE APPROXIMATE FAILURE MILEAGE WAS 66,500.

BRAKE PEDAL GOES TO THE FLOOR WITHOUT MUCH EFFORT WHEN AT A FULL STOP OR IN MOTION. LITTLE TO NO ACTUAL BRAKING OCCURS UNTIL REACHING THE FULL TRAVEL OF THE PEDAL. THIS IS VERY DANGEROUS AND THE DEALERSHIP (BURNS HYUNDAI OF MARLTON NJ) ACKNOWLEDGED IT IS THE HYDRAULIC CONTROL UNIT, BUT REFUSES TO REPLACE UNDER THE 2013 RECALL OF THE UNIT. THEY QUOTED ME AT $3,024.50.

I HAD TWO PRIOR INCIDENTS WHERE PARTIAL TO COMPLETE BRAKING FAILURE OCCURRED PREVIOUSLY, BUT THE ISSUE WAS ONLY TEMPORARY (A SINGLE STOP). THIS INCIDENT PERSISTED FOR DURATION OF MY DRIVE, PROMPTING RESEARCH INTO THE ISSUE (AND DISCOVERY OF THE KNOWN ABS HECU CORROSION ISSUE. I WAS ATTEMPTING TO SLOW AND MAKE A TURN ONTO A SIDESTREET ON THE WAY TO WORK, WHEN THE BRAKE PEDAL WENT TO THE FLOOR WITH MINIMAL RESISTANCE (AND LIMITED BRAKING EFFECTIVENESS). THIS PROMPTED A PANICKED PUMPING OF THE BRAKES TO EVENTUALLY STOP THE VEHICLE 5-10FT SHY OF THE REAR BUMPER OF ANOTHER CAR. AFTER CAREFULLY TESTING TO ENSURE I HAD SOME BRAKING EFFECTIVENESS, I FINISHED THE SHORT DISTANCE TO MY OFFICE, NOTING THAT THE PEDAL REMAINED VERY SOFT, GOING TO THE FLOOR WITH EASE, AND HAVING LIMITED SUCCESS IN STOPPING THE VEHICLE. I SHUDDER TO THINK WHAT WOULD HAVE HAPPENED HAD THIS ISSUE PRESENTED ITSELF AT HIGHWAY SPEEDS. I HAVE ALREADY CONTACTED HYUNDAI CORPORATE AND DROPPED MY VEHICLE OFF WITH A DEALERSHIP FOR RECALL REPAIR. I AM HOPING THIS INCIDENT, COUPLED WITH MY MANUFACTURE DATE (PRIOR TO JUNE 1, 2010 CUTOFF DATE) WILL JUSTIFY A FULL ABS HECU REPLACEMENT UNDER RECALL.