Problems · by component

2008 Mercury Mariner Hybrid service brakes problems

29 owner complaints to NHTSA about the 2008 Mercury Mariner Hybrid cite service brakes, 25% of all 116 complaints for this model year.

Complaints
29
25% of all complaints
Crashes
1
Reported by owners
Fires
0
Reported by owners
Injuries
0
Reported by owners
01 —Owner reports

What owners say about the service brakes

Verbatim from NHTSA complaints, newest first
“ABS BRAKE LIGHT WARNING CAME ON. BRAKES PRETTY MUCH STOPPED WORKING WITHOUT ANY PRIOR WARNING TO THE LIGHTS. HAD TO DEPRESS THE PEDAL ALL THE WAY TO GET BRAKES. VERY UNSAFE. NOW THE BRAKE IS STUCK ON AND THE CAR DOESN'T MOVE. HAVE TALKED TO AND READ ABOUT SEVERAL PEOPLE THAT HAD THE SAME ISSUE. WHY HASN'T THERE BEEN A RECALL YET?”
Owner complaint to NHTSAFiled Jun 17, 2019Service brakesODI 11220781
“"TAKATA RECALL" WHEN I WAS LEAVING A STORE YESTERDAY I NOTICED THAT MY ABS, BRAKE LIGHT CAME ON ALONG WITH A DESCRIPTION INDICATING MY CHECK BRAKE SYSTEM. I NEVER NOTICED AN ISSUE WITH MY BREAKS PRIOR TO THESE SIGNALS COMING ON AND MY FIANC'S CAR HAD BEEN FUNCTIONING WELL FOR THE LAST FOUR YEARS. I NORMALLY DRIVE THE SUV SO WHEN I NOTICED IT SAID THAT I MADE SURE THE BREAKS WERE WORKING WHEN I STARTED TO MOVE. I DID NOTICE THAT THE BREAKS REQUIRED MORE OF A FIRM PUSH WHEN I WAS NEEDING TO COME TO A SPOT. I DIDN'T HAVE ANY ACCIDENTS OR CAUSED ME TO RUN ANY STOP LIGHTS OR STOP SIGNS. HOWEVER, AFTER DOING MY OWN RESEARCH I DID FIND OUT THAT THIS IS A PROBLEM FOR THE 2008 MERCURY MARINERS AND FROM SOME OF THE WARNINGS I HAVE READ STATED THE BREAKS ENDED UP FAILING AFTER THIS ALL ACCRUED AND ABOUT GOT THEM INTO ACCIDENTS. WITH THE NHTSA ALREADY INVESTIGATING THE '2006-2012 FUSION AND LINCOLN MKZ AND THE 2006-2011 MERCURY MILAN' MODELS WITH THE SAME ISSUES, IT SEEMS THE ISSUE IS BIGGER THAN JUST THE MERCURY MARINER.”
Owner complaint to NHTSAFiled Apr 16, 2019Service brakesODI 11196826
“ABS LIGHT CAME ON AND BRAKE SYSTEM FAILED TO STOP THE VEHICLE UNTIL PRESSED HARD THE BRAKE PEDAL. THE ABS LIGHT COMES ON AND OFF. GAVE THE VEHICLE FOR DIAGNOSTICS TO MECHANIC - CODES U0418 INVALID DATA FROM BRAKE CONTROL MODULE, CODES C1478, C1479, C1480, WHEEL BRAKE PRESSURE CONTROL PLAUSIBILITY, U2023 COMMUNICATION NETWORK FAULT, MECHANIC GAVE ESTIMATE OF $5542.00 TO REPLACE ABS CONTROL ASSEMBLY. I CALLED FORD CUSTOMER SERVICE, THEY DECLINED TO ASSIST AT THIS TIME. NO HELP PROVIDED TO PUT MY VEHICLE BACK ON ROAD. THIS IS A SAFETY ISSUE.”
Owner complaint to NHTSAFiled Jan 3, 2019Service brakesODI 11165630
“TL* THE CONTACT CALLED ON BEHALF OF HIS DAUGHTER WHO OWNS A 2008 MERCURY MARINER HYBRID. WHILE DRIVING 45 MPH, THE RE-GEN BRAKE DISABLED WARNING INDICATOR ILLUMINATED AND THE BRAKES FAILED TO OPERATE AS INTENDED. WHEN THE CONTACT TURNED OFF AND RESTARTED THE VEHICLE, IT OPERATED AS INTENDED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE HYDRAULIC CONTROL UNIT NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT STATED THAT THE FAILURE WAS INTERMITTENT. THE DEALER WAS NOT CONTACTED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 150,000.”
Owner complaint to NHTSAFiled Dec 21, 2018Service brakesODI 11162903
“TL* THE CONTACT OWNS A 2008 MERCURY MARINER HYBRID. WHILE DRIVING APPROXIMATELY 30 MPH, THE ABS AND BRAKE WARNING INDICATORS ILLUMINATED. THE BRAKE PEDAL WAS DEPRESSED TO THE FLOORBOARD TO STOP THE VEHICLE. THE VEHICLE WAS TAKEN TO ROESCH FORD (333 W GRAND AVE, BENSENVILLE, IL 60106, (630) 279-6000) WHERE IT WAS DIAGNOSED THAT THE HYDRAULIC CONTROL UNIT FAILED AND NEEDED TO BE REPLACED; HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC WHERE IT WAS DIAGNOSED THAT THE HYDRAULIC CONTROL UNIT FAILED. THE VEHICLE WAS REPAIRED, BUT THE FAILURE RECURRED A THIRD TIME. THE VEHICLE WAS NOT REPAIRED AGAIN. THE MANUFACTURER WAS NOTIFIED OF THE FAILURES AND REFERRED THE CONTACT TO NHTSA. THE APPROXIMATE FAILURE MILEAGE WAS 94,000. THE VIN WAS NOT AVAILABLE.”
Owner complaint to NHTSAFiled Sep 17, 2018Service brakesODI 11129986
“HEADING WEST ON THE INTERSTATE I TOOK THE OFF RAMP AND CAME TO A STOP. AS I WAS STOPPING A TONE RANG OUT, THE ABS LIGHT, AND BRAKE WARNING LIGHT CAME ON. THE BRAKES DIDN'T FEEL AS STIFF AS THEY SHOULD HAVE BUT I DID COME TO A STOP AS I WASN'T TRAVELING VERY FAST WHILE APPROACHING THE STOP SIGN. I TURNED LEFT AND PROCEEDED OVER THE OVERPASS TOWARDS A SIDE ROAD WHEN A CAR THAT HAD COME UP THE OFF RAMP FROM THE EASTBOUND LANE ROLLED THE STOP SIGN AND STOPPED WITH THE NOSE OF THEIR VEHICLE IN MY LANE. I NEARLY PUT THE BRAKE PEDAL THROUGH THE FLOOR AND HAD LITTLE TO NO BRAKES TO STOP ME. I AND MADE A SPLIT SECOND DECISION TO SWERVE AROUND THE CAR, DRIVING IN THE ONCOMING LANE AS I WAS ABLE VERIFY THERE WAS NO ONCOMING TRAFFIC. ONCE I PULLED OVER ON A SIDE ROAD I NOTICED THE DISPLAY IN THE DASH READ "REGEN BRAKE DISABLED" I DROVE SLOWLY TO A SMALL CAR SALES LOT WITH AN AUTO SHOP AND THEY RESEARCHED FOR A FEW MINUTES AND TOLD ME I WOULD HAVE TO TAKE IT TO A DEALER TO REPLACE A HYDRAULIC PUMP. THEY WERE ABLE TO FIX THE ISSUE BY DISCONNECTING THE BATTERY FOR A BIT BUT SAID MORE THAN LIKELY THE FIX WOULDN'T LAST. NEXT STOP IS THE FORD DEALER BUT FROM WHAT I'VE READ…”
Owner complaint to NHTSAFiled Sep 17, 2018Service brakesODI 11130011

Showing 6 of 29 reports. Read every report on NHTSA.gov.

Data from NHTSA Complaints API (owner reports, unverified) · synced Nov 9, 2026NHTSA vehicle page

Complaints are unverified owner reports to NHTSA and are not normalized for sales volume. One complaint can cite several components.

Other 2008 Mariner Hybrid problem areas