2007 Mercury Mariner Engine Problems

90sWhile driving, the vehicle will suddenly display a warning message that says “Stop Safely Now”. When this message appears, the hybrid system overheats and the vehicle immediately loses power. The gasoline engine and electric motor both shut down without warning, even at highway speeds. I am forced to coast to the side of the road, which is extremely dangerous in traffic. This happens after the vehicle has been driven for a short period of time. The cooling fans appear to be running, but the hybrid electronics system overheats and triggers the shutdown safety mode. After waiting for the vehicle to cool down, it will restart, but the problem continues every time the car reaches normal driving temperature. This issue matches the symptoms covered under Ford’s previous safety actions and customer satisfaction programs for the 2005–2008 Ford Escape and Mercury Mariner Hybrid (hybrid electronics overheating and shutdown). The dealership states that no recall appears under my VIN, but the safety failure is identical. The vehicle becomes unsafe and inoperable with no advance warning beyond the brief “Stop Safely Now” message. This defect poses a serious risk of a crash, injury, or death due to the sudden loss of propulsion in traffic.

NHTSA ID

11701977

Incident

Oct 22, 2025

MY SON WAS USING OUR CAR HE DROVE IT TO WORK... ALL WAS FINE...HE USED THE CAR TO GO GET LUNCH IN THE SHOPPING CENTER... DROVE BACK FROM THE SHOPPING CENTER TO A PARKING SPOT OUTSIDE HIS JOB LOCATION... HE THEN COMPLETED HIS SHIFT AT DICK'S SPORTING GOODS WHERE MY WIFE AND I MET UP WITH HIM...WE ALL PROCEEDED TO OUR CAR AND TRUCK WHICH WERE PARKED ACROSS FROM ONE ANOTHER...MY WIFE AND SON GOT IN THE MERCURY I GOT IN MY TRUCK... MY SON TRIED TO START THE MERCURY BUT IT WOULD NOT TURN OVER...MY WIFE TRIED STILL WOULD NOT TURN OVER ... CHECKED THE BATTERY ALL WAS GOOD SO I THOUGHT MAYBE THE STARTER? HAD IT TOWED , AND A STARTER REPLACED? STILL NOTHING ... MY MECHANIC SAID IT WAS THE MOTOR ? AND I WOULD NEED A NEW MOTOR !!! SO I LOOKED ON LINE AND FOUND SOMETHING ABOUT A CLASS ACTION LAWSUIT INVOLVING MERCURY MARINER 2005 TO 2008 MINE IS A 2007 ? CALLED THEM BUT THE SAID I HAVE TO CONTACT FORD MOTOR COMPANY MY SELF ???? SO THAT IS WHAT LED ME TO YOU!!! CAN YOU HELP?

NHTSA ID

10949952

Incident

Dec 6, 2016

Mileage

100,006 mi

CAR LOST POWER WHILE DRIVING-- IT OPERATED AT A LIMP AT FIRST-- JUST PRIOR TO THAT WENT FORWARD QUICK, THEN IT JUST STALLED WHILE DRIVING WHILE IN GEAR. THE GAS JUST MADE THE ENGINE REV. THE CAR THE NEXT DAY AFTER GETTING TOWED OPERATED AND THE SAME THING HAPPENED WHILE THE SERVICE STATION TOOK THE CAR FOR A TEST DRIVE. THEY HAD TO TOW IT BACK. THIS SAME PROBLEM WAS FIXED UNDER WARRANTY (20,000 ON APPROX. 03/2008). IT HAPPENED AGAIN. FORD REFUSED TO AGREE THAT THERE IS SOMETHING WRONG WITH THE DESIGN ETC. IF THIS HAD HAPPENED ON THE HIGHWAY AT HIGHWAY SPEEDS THE RESULTS COULD HAVE BEEN TRAGIC. I THINK IT HAS SOMETHING TO DO WITH THE THROTTLE PROBLEM... THE CAR LIMPS JUST AS EVERYONE AS COMPLAINED ABOUT. I HAVE NO IDEA WHAT WAS ACTUALLY FIXED UNDER WARRANTY AS THE PARTS MEAN NOTHING. PISTONS, GASKETS, SENSOR TURBI, HUB PLATE ASY, SEALS, AND MANY OTHER PARTS. *TR

NHTSA ID

10577052

Incident

Apr 1, 2014

Mileage

100,000 mi

THE CAR JUST LOST POWER WHILE DRIVING. SURGED A BIT THEN WAS OPERATING AT REDUCED POWER LIKE IT WAS LIMPING EVENTUALLY IT JUST STALLED AND THE GAS WOULD JUST REV THE ENGINE. FORD FIXED THE CAR UNDER WARRANTY. IF THIS HAS HAPPENED AT HIGHWAY SPEEDS IN TRAFFIC IT WOULD HAVE CAUSED A SEVERE ACCIDENT AS CARS WOULD HAVE BEEN DODGING A STALLED CAR AT HIGHWAY SPEEDS-. *TR

NHTSA ID

10577046

Incident

Mar 7, 2008

Mileage

20,000 mi

I WAS DRIVING TO WORK AND CAR BEGAN TO MAKE A LOUD RATTLE NOISE, OD LIGHT FLASHED (OD OFF) AND PULLED OVER. I ATTEMPTED TO PULL BACK ON ROAD AND CAR WOULD NOT SHIFT INTO 2ND GEAR. TRANSMISSION PROBLEM. 1800.00 REPAIR. NOW 2013 EXACTLY 3 YEARS LATER AND CAR BEGINS SAME THING ALL OVER AGAIN. DIAGNOSTIC TEST STATES NEEDS NEW TRANSMISSION. TOLD THESE CARS HAVE HAD THESE PROBLEMS FROM THE GET GO. FORD KNOWS THIS! THE PROBLEM IS COOLANT IS LOCATED IN RADIATOR AND DOES NOT KEEP TRANS FROM OVERHEATING. I AM NOW TOLD IT WILL BE 3650.00 FOR ANOTHER TRANS. THIS IS A TOTAL MESS. IT IS NOT FAIR TO THE CONSUMER WHO STILL OWES 16,000.00 ON THIS CAR. I BOUGHT THIS CAR WITH THE HOPES OF REPAIRING MY DAMAGED CREDIT AND MADE ALL ROUTINE SERVICE AND FLUSHES AS SCHEDULED ON TIME. NOW WHAT TO DO? I CANT AFFORD ANOTHER TRANSMISSION, AND AM WITHOUT A CAR AND CONTINUE TO HAVE A CAR PAYMENT OR MY CREDIT THAT I HAVE FINALLY GOT BACK ON TRACK IS RUINED ONCE AGAIN! CAN ANYONE OFFER ME ADVICE ON WHAT TO DO? HELP! *TR

NHTSA ID

10511020

Incident

Jun 29, 2010

Mileage

57,000 mi

TL* THE CONTACT OWNS A 2007 MERCURY MARINER. THE CONTACT STATED THAT WHILE DRIVING 30 MPH, THE VEHICLE STALLED AND LOST POWER TO ALL ELECTRICAL COMPONENTS. THE CONTACT WAS ABLE TO RESTART THE VEHICLE AND DRIVE HOME. THE CONTACT TOOK THE VEHICLE TO A DEALER WHERE THE FAILURE COULD NOT BE REPLICATED. THE VEHICLE WAS NOT REPAIRED. THE CONTACT DID NOT CALL THE MANUFACTURER. THE FAILURE MILEAGE WAS 20,000. THE VIN WAS NOT AVAILABLE.

NHTSA ID

10500538

Incident

Apr 11, 2007

Mileage

20,000 mi

TL* THE CONTACT OWNS A 2007 MERCURY MARINER. THE CONTACT STATED THAT WHILE DRIVING 65 MPH, THE VEHICLE MADE A LOUD NOISE AND A CLOUD OF SMOKE CAME FROM UNDER THE HOOD. THE CONTACT WAS ABLE TO COAST OFF THE HIGHWAY. THE VEHICLE WAS TOWED TO THE DEALER AND THE CONTACT WAS ADVISED THAT THE OIL LIGHT ONLY ILLUMINATED AFTER THE ENGINE FAILURE. THE VEHICLE WAS REPAIRED AT A REDUCED RATE. THE CONTACT COULD NOT CONFIRM THE EXACT REPAIR THAT WAS MADE TO THE VEHICLE. THE FAILURE AND THE CURRENT MILEAGES WERE 73,000 MILES. UPDATED 07/19/12 *BF UPDATED 07/31/12

NHTSA ID

10458549

Incident

Apr 7, 2012

Mileage

73,000 mi

I PURCHASED THE VEHICLE WITH 6,000 MILES ON IT. I KEPT UP MY NORMAL MAINTANCE ON THE VEHICLE AND REPLACED THINGS WHEN NEEDED. AT APPROXIMATELY 42,000 MY TRANSMISSION WOULD NO LONGER SHIFT THE GEARS. THE VEHICLE WAS BROUGHT TO WALLACE DEALERSHIP OF WHICH THEY KEPT MY VEHICLE FOR ALMOST 2 WEEKS. THEY EXPLAINED THEY DID AN OVERHAUL OF THE TRANSMISSION AND FIXED REPAIRS ON IT SO THAT THEIR WOULD BE NO FURTHER PROBLEMS WITH TRANSMISSION LATER ON DOWN THE ROAD. NOW AT 84,735 MILES LATER, I AM ONCE AGAIN HAVING TRANSMISSION PROBLEMS AND MY VEHICLE WILL NOT GO INTO GEAR. BECAUSE I AM OUT OF WARRANTY MY VEHICLE WILL SIT UNTIL I CAN MAKE THE REPAIRS AS A TRANSMISSION REPLACEMENT IS NOT A CHEAP EXPENSE. THIS IS A SERIOUS PROBLEM WITH IN THIS CAR AND DESERVES EXTREME PRIORITY OF INVESTIGATION ON A RECALL FOR THIS YEAR, MAKE, AND MODEL OF VEHILE. I AM RECEIVING NO HELP FROM THE FORD COMPANY AND I AM FINDING IT EXTREMELY DIFFICULT THAT THIS PROBLEM IN THIS VEHILCE HAS NOT BEEN RESOLVED OR DEALT WITH. I HAVE HAD A PRIVATE TRANSMISSION COMPANY EXAMINE MY VEHILCE (HAS NOT TOUCHED IT), OF WHICH THEY DISCOVERED, THE INTERNAL FILTER IS CLOGGING THE CVT (CONSTANT VELOCITY TRANSMISSION) FOR WHICH SOMETHING WILL CONTINIOUSLY BREAK IN THE FILTER OR WHERE THE FILTER IS HELD CAUSING THIS TO HAPPEN. I WAS ALSO ADVISED THERE WAS NOTHING I COULD HAVE DONE MAINTANCE WISE OR PERSONAL USE OF DRIVING THAT COULD HAVE CAUSED THIS TO HAPPEN. *TR

NHTSA ID

10443529

Incident

Dec 19, 2011

Mileage

84,735 mi

I HAVE A 2007 MERCURY MARINER I PURCHASED IN APRIL 2007. THE VEHICLE HAS BEEN IN THE SHOP 4 TIMES NOW. 3 OF THE 4 TIMES BECAUSE SOMETHING HAS "GONE OUT" ON THE VEHICLE I.E. THE GAS PEDAL, THE WHEEL BEARINGS, THE TENSION PULLEY. I ALSO FOUND OUT FROM THE DEALERSHIP THAT THAT MANUFACTURER NEVER PUT THE BOLTS ON THE TOP OF MY ENGINE TO COVER THE SPARK PLUGS. I CONTINUE TO HAVE A PROBLEM. THESE LAST THREE INCIDENTS HAVE BEEN WITHIN THE LAST MONTH AND A HALF MY VEHICLE HAS BEEN IN THE SHOP GETTING NEW PARTS. I HAVE ALWAYS BOUGHT USED. THIS IS THE FIRST VEHICLE I HAVE EVER PURCHASED A NEW VEHICLE AND I FIND IT HARD TO BELIEVE IT SHOULD HAVE THIS MANY PROBLEMS. EVERYTHING SO FAR IS COVERED UNDER WARRANTY, BUT IN 1,000 MILES I HAVE NO WARRANTY. I CAN'T IMAGINE HOW MUCH IT IS GOING TO COST IF SOMETHING ELSE "GOES OUT" ON MY BRAND NEW VEHICLE. *TR

NHTSA ID

10217991

Incident

Oct 30, 2007

Mileage

17,000 mi