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2009 Mercury Mariner Hybrid

Owner reports · Recalls · Investigations

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There is not enough comparable history to draw a useful model-year comparison.

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How this year compares

Owner complaints by model year

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Counts vary with age, sales and reporting. They are not failure rates.

What owners reported most

All reported categories

Tap a category to read its complaints. One report may name several components.

When problems were reported

Mileage at the reported incident

21 reports with mileage · 0 unknown

NHTSA’s mileage field refers to the reported incident, not necessarily the filing date. This shows report counts, not the likelihood of a failure.

What to inspect

Issues worth paying extra attention to based on owner reports.

  • Steering. Review the 8 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Vehicle Speed Control. Review the 6 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →
  • Engine. Review the 4 owner reports in this category and discuss these concerns during a pre-purchase inspection. Read reports →

NHTSA owner reports · September 18, 2026 snapshot.

2 crash reports0 fire reports0 injury reports

What owners actually said

21 reports
113,000 miles · Sep 26, 2016
Engine

TL* THE CONTACT OWNS A 2009 MERCURY MARINER HYBRID. WHILE DRIVING 70 MPH ON A HIGHWAY, THE VEHICLE STALLED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS ABLE TO RESTART AFTER 5 TO 20 MINUTES. THE FAILURE RECURRED SEVEN TIMES PRIOR TO THIS INCIDENT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAG…

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TL* THE CONTACT OWNS A 2009 MERCURY MARINER HYBRID. WHILE DRIVING 70 MPH ON A HIGHWAY, THE VEHICLE STALLED. THERE WERE NO WARNING INDICATORS ILLUMINATED. THE VEHICLE WAS ABLE TO RESTART AFTER 5 TO 20 MINUTES. THE FAILURE RECURRED SEVEN TIMES PRIOR TO THIS INCIDENT. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE. THE FAILURE MILEAGE WAS 113,000.

NHTSA ODI #10909735

88,181 miles · Jan 19, 2016
Vehicle Speed Control

I WAS APPROACHING A STOP SIGN GOING ABOUT 15 MPH AND THE APPLIED THE BRAKE. INSTEAD OF STOPPING, THE CAR ACCELERATED AND I HAD TO STEER AROUND A CAR IN THE INTERSECTION TO AVOID AN ACCIDENT. I APPLIED THE EMERGENCY BRAKE AND THREW THE CAR INTO PARK TO STOP IT.

NHTSA ODI #10820879

75,000 miles · Aug 12, 2015
Engine

TL* THE CONTACT OWNS A 2009 MERCURY MARINER HYBRID. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 60 MPH, THE VEHICLE LOST POWER AND COULD NOT ACCELERATE OVER 40 MPH. THE FAILURE RECURRED ON ONE OTHER OCCASION. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FA…

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TL* THE CONTACT OWNS A 2009 MERCURY MARINER HYBRID. THE CONTACT STATED THAT WHILE DRIVING APPROXIMATELY 60 MPH, THE VEHICLE LOST POWER AND COULD NOT ACCELERATE OVER 40 MPH. THE FAILURE RECURRED ON ONE OTHER OCCASION. THE VEHICLE WAS NOT DIAGNOSED OR REPAIRED. THE MANUFACTURER WAS NOT MADE AWARE OF THE FAILURE. THE APPROXIMATE FAILURE MILEAGE WAS 75,000.

NHTSA ODI #10748285

123,250 miles · May 21, 2015
Electrical SystemElectronic Stability Control (esc)Service Brakes

WHILE DRIVING DOWN THE ROAD, ALL OF THE WARNING LIGHTS ON THE DASH BOARD CAME ON AND THEN THE BREAKS FAILED. WE WERE ABLE TO GET TO SAFETY AFTER GOING OFF THE ROAD. WHEN TAKEN INTO THE FORD MOTOR COMPANY REPAIR SHOP THEY RESET THE CODES AND SAID EVERYTHING WAS FINE, NO PARTS TO REPAIR. LESS THAN 50 MILES LATER, THE SAME THING…

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WHILE DRIVING DOWN THE ROAD, ALL OF THE WARNING LIGHTS ON THE DASH BOARD CAME ON AND THEN THE BREAKS FAILED. WE WERE ABLE TO GET TO SAFETY AFTER GOING OFF THE ROAD. WHEN TAKEN INTO THE FORD MOTOR COMPANY REPAIR SHOP THEY RESET THE CODES AND SAID EVERYTHING WAS FINE, NO PARTS TO REPAIR. LESS THAN 50 MILES LATER, THE SAME THING HAPPENED AGAIN INJURING 3! THIS TIME IT'S THE ABS MODULE. AFTER CALLING THE FORD MOTOR COMPANY, THEY REFUSE TO ADMIT THERE IS ANY PROBLEM AND NO REASON FOR A RECALL. WE WERE GIVEN THE NHTSA INFORMATION TO MAKE A COMPLAINT AND IF EVENTUALLY NHTSA INFORMS FORD THAT THEY MUST DO A RECALL WE CAN BE GIVEN A REFUND FOR OUR MONEY SPENT ON THIS REPAIR. OUR QUESTION IS WHAT HAPPENS WHEN SOMEONE DIES? DOES IT TAKE THAT BEFORE SOMEONE IS GOING TO DO SOMETHING ABOUT THE KNOWN HYBRID BREAKING PROBLEMS? THE MANGER AT THE FORD MOTOR COMPANY CUSTOMER SERVICE DOESN'T THINK IT'S AN ISSUE WORTH LOOKING INTO ONLY TO SAY THAT A VEHICLE WITH HIGH MILEAGE SHOULD BE TAKEN CARE OF AND REPAIRED BY THE OWNERS. NOT THAT FORD IS RESPONSIBLE FOR FAULTY PARTS! PLEASE NHTSA DO SOMETHING ABOUT THE HYBRID BREAKING SYSTEM BEFORE MULTIPLE PEOPLE CONTINUE TO BE INJURED OR ARE KILLED!

NHTSA ODI #10717782

75,000 miles · Jan 27, 2015
Electrical SystemFuel/propulsion SystemVehicle Speed Control

VEHICLE LOSES ALL ABILITY TO CONTROL THE THROTTLE BOTH WHILE AT HIGHWAY SPEED AND WHEN PULLING AWAY FROM A STOP. "WRENCH" FAULT INDICATOR ON THE DASHBOARD ILLUMINATES. RESTARTING THE VEHICLE RESTORES NORMAL OPERATING CONDITIONS UNTIL THE ISSUE REAPPEARS. THERE IS NO FAULT CODE ON OBDII READER AFTER RESTARTING THE ENGINE. *TR

NHTSA ODI #10679147

148,000 miles · Oct 6, 2014
Electrical SystemFuel/propulsion SystemVehicle Speed Control

MY CAR, ON 4-5 OCCASIONS NOW, HAS LOST ALL POWER WHILE TRAVELING ON THE FREEWAY AT ABOUT 80 MILES PER HOUR. I CALLED FORD BECAUSE OF THE ELECTRONIC THROTTLE BODY CUSTOMER SATISFACTION PROGRAM AND MY VEHICLE DOES NOT QUALIFY BECAUSE OF THE ASSEMBLY PLANT THAT THE CAR WAS BUILT AT. I CAN ATTEST THAT MY VEHICLE IS DOING THE SAME …

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MY CAR, ON 4-5 OCCASIONS NOW, HAS LOST ALL POWER WHILE TRAVELING ON THE FREEWAY AT ABOUT 80 MILES PER HOUR. I CALLED FORD BECAUSE OF THE ELECTRONIC THROTTLE BODY CUSTOMER SATISFACTION PROGRAM AND MY VEHICLE DOES NOT QUALIFY BECAUSE OF THE ASSEMBLY PLANT THAT THE CAR WAS BUILT AT. I CAN ATTEST THAT MY VEHICLE IS DOING THE SAME EXACT THING THAT IS DESCRIBED IN THE ACCOUNTS OF THE PROBLEM WITH THE THROTTLE - WITHOUT QUESTION. I URGE YOU TO EXPAND THE PROGRAM THAT FORD IS BEING REQUIRED TO DO FOR THIS MASSIVE (OVER 1 MILLION VEHICLE) PROBLEM. THIS APPEARS TO ME TO GO BEYOND A PLANT ISSUE TO AN ENGINEERING ISSUE WITH THE PART ITSELF. *TR

NHTSA ODI #10641710

21,300 miles · Apr 14, 2012
Steering

THE STEERING LOCKED FOR 1 TO 2 SECONDS DURING A RIGHT HAND TURN ON AN ENTRANCE RAMP TO A HIGHWAY. IT HAPPENED AGAIN 2 MONTHS LATER WITH THE STEERING LOCKING FOR 1 TO 2 SECONDS ON A LEFT HAND TURN AFTER STOPPING AT A STOP SIGN. *TR

NHTSA ODI #10455263

37,850 miles · Oct 11, 2011
Service Brakes, Hydraulic

THIS VEHICLE HAS LOST BRAKES 3 TIMES. MY NOW 17 YEAR OLD DAUGHTER IS THE DRIVER! THE FIRST TIME THE BRAKE PEDAL WENT TO THE FLOOR AND PUMPING IT WOULD NOT HELP. PUTTING THE CAR IN NEUTRAL AND USING THE EMERGENCY BRAKE WAS THE ONLY WAY TO STOP THE CAR. A NON-FORD CAR TECHNICIAN TOLD US IT WAS A POSSIBLE BRAKE BOOSTER ISSUE AND …

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THIS VEHICLE HAS LOST BRAKES 3 TIMES. MY NOW 17 YEAR OLD DAUGHTER IS THE DRIVER! THE FIRST TIME THE BRAKE PEDAL WENT TO THE FLOOR AND PUMPING IT WOULD NOT HELP. PUTTING THE CAR IN NEUTRAL AND USING THE EMERGENCY BRAKE WAS THE ONLY WAY TO STOP THE CAR. A NON-FORD CAR TECHNICIAN TOLD US IT WAS A POSSIBLE BRAKE BOOSTER ISSUE AND THE BEST THING TO DO WOULD BE FOR IT TO HAPPEN AGAIN AND BRING IT TO FORD FOR THE CODES TO BE READ. I DROVE THE CAR FOR OVER A WEEK AND IT WOULD NOT REPEAT THE PROBLEM. THE SECOND TIME WAS ALSO AROUND 40 MPH AND PUSHING THE BRAKES AS HARD AS POSSIBLE WOULD ONLY SLIGHTLY STOP THE CAR AND IT WOULD KEEP JUMPING FORWARD. MY DAUGHTER HAD TO STOP WITH THE E-BRAKE. I TOOK IT TO FORD FOR DIAGNOSIS AND REPAIR. FORD REPLACED THE VACUUM PUMP/HOSE ASSEMBLY. THEN 2 DAYS LATER, SHE LOST BRAKES AGAIN. HAD TO USE E-BRAKE TO STOP IN BUSY TRAFFIC. THE SOUTHEAST REGION FORD TECHNICIAN CAME TO DIAGNOSIS THIS CAR. AFTER 9 DAYS AT THE SHOP THE BRAKE BOOSTER ASSEMBLY WAS REPLACED. WE HAVE BEEN TOLD AGAIN THAT THIS SHOULD TAKE CARE OF THE PROBLEM. FYI ( EACH TIME THE CAR LOST BRAKES, BY TURNING OFF THE CAR AND BACK ON AGAIN IT WOULD REGAIN THEM). I AM NOW DRIVING THIS CAR TO DETERMINE IF THE ISSUE IS IN FACT TAKEN CARE OF. THIS HAS BEEN A VERY SCARY SITUATION - ESPECIALLY SINCE MY DAUGHTER IS THE DRIVER OF THIS VEHICLE. WHEN READING AUTOMOBILE BLOGS IT APPEARS BRAKES ARE AN ISSUE NOT ONLY WITH THE MARINER HYBRID, BUT THE ESCAPE HYBRID AS WELL. I WOULD LIKE THIS INVESTIGATED. *KB

NHTSA ODI #10429479

31,000 miles · Aug 11, 2011
Steering

POWER STEERING CUT OUT, QUIT WORKING, ON LEFT TURN, SPEED ABOUT 10 MPH. OUTAGE LASTED ABOUT 1-2 SECONDS. BELIEVE WOULD HAVE HIT FAR SIDE CURB IF STEERING HAD NOT SPONTANEOUSLY RECOVERED. THIS WAS FIRST OCCURRENCE. DROVE CAR DIRECTLY TO DEALER FROM INCIDENT; DIAGNOSIS TBD. AFRAID TO DRIVE. AT HIGHER SPEED OR IF HAD LASTED…

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POWER STEERING CUT OUT, QUIT WORKING, ON LEFT TURN, SPEED ABOUT 10 MPH. OUTAGE LASTED ABOUT 1-2 SECONDS. BELIEVE WOULD HAVE HIT FAR SIDE CURB IF STEERING HAD NOT SPONTANEOUSLY RECOVERED. THIS WAS FIRST OCCURRENCE. DROVE CAR DIRECTLY TO DEALER FROM INCIDENT; DIAGNOSIS TBD. AFRAID TO DRIVE. AT HIGHER SPEED OR IF HAD LASTED JUST A LITTLE LONGER WOULD HAVE WRECKED! *TR

NHTSA ODI #10418503

14,143 miles · Sep 16, 2010
Vehicle Speed ControlCrash

TL*THE CONTACT OWNS A 2009 MERCURY MARINER HYBRID. THE CONTACT STATED THAT AFTER APPLYING THE BRAKES IN THE PARKING LOT THE VEHICLE ACCELERATED. THE VEHICLE DID NOT RESPOND TO THE BRAKES AND DID NOT STOP UNTIL THE VEHICLE CRASHED INTO A PARKED VEHICLE. AFTER HITTING THE VEHICLE THE RPMS CONTINUED TO INCREASE AND DID NOT STOP UN…

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TL*THE CONTACT OWNS A 2009 MERCURY MARINER HYBRID. THE CONTACT STATED THAT AFTER APPLYING THE BRAKES IN THE PARKING LOT THE VEHICLE ACCELERATED. THE VEHICLE DID NOT RESPOND TO THE BRAKES AND DID NOT STOP UNTIL THE VEHICLE CRASHED INTO A PARKED VEHICLE. AFTER HITTING THE VEHICLE THE RPMS CONTINUED TO INCREASE AND DID NOT STOP UNTIL THE ENGINE WAS TURNED OFF. THE VEHICLE WAS TOWED TO THE DEALER TO BE INSPECTED. THE POLICE DID NOT FILE A REPORT BECAUSE THEY SAID IT WAS IN A SCHOOL PARKING. THE FAILURE AND CURRENT MILEAGES WERE 14143.

NHTSA ODI #10356004

Official recalls

0

No recalls in this snapshot.

Model-level recall history does not show whether a particular VIN is affected or has received a repair. Check a VIN with NHTSA ↗

NHTSA investigations

2

DP22005 · Pedestrian Alert Sounds

Opened Jan 27, 2023 · Closed Aug 7, 2023

Status: closed (inferred from source dates) · Electrical System:propulsion System

NHTSA received a petition on or about July 18, 2022, requesting that Federal Motor Vehicle Safety Standard (FMVSS) 141 be applied to all electric and hybrid vehicles operating in the United States. The petition can be reviewed at NHTSA.gov under ODI Number 11486072. FMVSS 141 establishes performance requirements for pedestrian alert sounds for motor vehicles. The standard applies to hybrid and electric vehicles that have a gross vehicle weight rating of 4,536 KG or less or are defined as low-speed vehicles. The standard became fully applicable to all such vehicles manufactured on or after March 1, 2021.On January 27, 2023, NHTSA opened Defect Petition (DP) 22-005 to evaluate the subject matter described in the petition. On June 24, 2023 and as supplemented on June 25, 2023, the petitioner notified NHTSA he was withdrawing his petition. The petitioner indicated that, based on his review of data, there is no justification for asserting potential benefits that could be derived from actions sought by my petition. Based on the petitioner's withdrawal, DP22-005 is closed. Closure of this DP does not represent a determination by NHTSA regarding the subject matter of the petition.

DP15001 · Loss Of Power Steering While Driving

Opened Apr 1, 2015 · Closed Jun 14, 2018

Status: closed (inferred from source dates) · Steering:electric Power Assist System

On May 27, 2014, amended June 2, 2014, Ford Motor Company (Ford) submitted a Defect Information Report (DIR) to NHTSA describing a safety defect that may result in a sudden loss of power steering assist while driving in approximately 746,067 model year (MY) 2008 through 2011 Ford Escape vehicles equipped with electric power assisted steering (NHTSA 14V-284, Ford 14S05). Ford's DIR described the defect condition as a poor signal to noise ratio [SNR] in the torque sensor within the Electric Power Assisted Steering (EPAS) system [which] does not allow the PSCM to determine the driver's steering input. When the system detects this fault condition, it transitions the EPAS system to the fail-safe/manual steering mode.Ford's DIR indicates that loss of power steering assist while driving would require higher steering effort at lower vehicle speeds, which may result in an increased risk of a crash.Ford's remedy instructs dealers to check the Power Steering Control Module (PSCM) for Diagnostic Trouble Codes (DTCs) to determine the proper repair procedure. If no DTCs are present, dealers are to update the PSCM and instrument cluster module software. The updated PSCM software changes the torque sensor fault strategy so that the SNR condition does not result in a loss of power steering assist while driving.In addition, audible and visual warnings are provided for torque sensor faults.If DTCs indicating faults in the torque sensor, PSCM or Power Steering Motor (motor) are present in the initial recall inspection, the dealer performs the following repairs: 1) replaces the torque sensor for torque sensor faults (DTC B2278); or 2) replaces the steering column for faults related to the PSCM (DTC B1342) or motor (DTC B2277).Continued in attachment pages