2005 Mercury Monterey Problems

What owners report

Owners of the 2005 Mercury Monterey report overwhelmingly one problem: the automatic transaxle stops driving the van, usually with no warning, and the engine still runs. Complaints describe losing forward and reverse gears on highways, ramps and after start-up, with the torque converter or the transmission itself replaced. Most of these reports arrive around 50,000-90,000 miles, though some owners describe the same failure well below 40,000 miles and again after a replacement.

1. 1
   Transmission and drivetrain

   Transmission stops pulling / loses all gears

   • 77 complaints (65%)
   • median 70,000 mi at 6.0 yrs old (71 state mileage)
   • owner-quoted repair $2,100 (median of 15 quotes)
   • filed 2007–2022

   Owners describe the van suddenly acting as if it is in neutral while the engine runs and revs: no forward or reverse drive, sometimes after shifting from reverse to drive at low speed. In several accounts the engine raced, the transaxle warning light came on, or the RPMs jumped erratically just before the loss of power. Complaints say the vehicle had to be towed and that dealers or independent shops diagnosed a failed transmission or torque converter and replaced one or both; a few note the replacement transmission later failed again. Reported from as low as 6,500 miles up to roughly 140,000, with most complaints falling between about 45,000 and 90,000 miles. No particular weather or seasonal pattern stands out in the sample.

   Recall 12V0060003 related service bulletins

   What to check: Ask for the transmission service history and whether the torque converter was replaced under recall 12V006000, and request the campaign number showing it was completed. On a test drive, watch for delayed or harsh engagement when shifting from reverse to drive and for RPM flare under light acceleration.

   2 excerpts from owner complaints in NHTSA records

   “Transmission failure of our 2005 Mercury Monterey mini-van with only 66,000 miles on it left my wife and kids stranded on a dirt road in the country far from the city. We got the van fixed and the new transmission went out again 8000 miles later. Ford needs to recall these transmissions before someone gets hurt.”

   NHTSA complaint #10353967, filed 2010-09, 66,500 miles

   “Vehicle exhibited no transmission issues and was driving completely fine with no warning lights. I was entering the on ramp to I-95 when the car stopped accelerating when it should have shifted to second gear. When I pulled the vehicle over it acted like it was in neutral no matter what gear it was actually in. This could have been a horrible accident if it happened while I was on the interstate.”

   NHTSA complaint #10423171, filed 2011-09, 67,000 miles
2. 2
   Transmission and drivetrain

   Torque converter failure with sudden loss of drive

   • 37 complaints (31%)
   • median 70,000 mi at 6.8 yrs old (31 state mileage)
   • owner-quoted repair $1,829 (median of 7 quotes)
   • filed 2009–2018

   A distinct group of complaints point to the torque converter specifically: the van coasts to a stop, will not move in any gear, and the shop reports the converter needs replacement. Owners mention the RPMs climbing high before the failure, and some describe paying for a converter replacement only for trouble to return later. Mostly between about 30,000 and 80,000 miles, with several reports in the 50,000-70,000 range.

   Recall 12V0060001 related service bulletin

   What to check: Check the VIN against campaign 12V006000 with a dealer and ask for written confirmation it was performed; a converter that was never replaced is the main thing to look at.

   2 excerpts from owner complaints in NHTSA records

   “While leaving a parking lot the vehicle came to a stop without any warning. The engine was running but the vehicle would not move in any gear. The local dealer towed in the van and had to replace the torque convertor. Ford motor company did not contact me and warn me that they were aware of this problem. This is a dangerous defect and all owners of this vehicle need to be warned before someone is killed.”

   NHTSA complaint #10423467, filed 2011-08, 101,498 miles

   “I have owned the Mercury montery for six years and have had nothing but problems. The biggest problem is a torque converter that has been replaced. Fortunately, I was traveling from north florida in 2009 when the van suddenly just stopped accelerating...I had to coast to the side of the interstate...with two other women in the car beside myself. The van had to be towed and a torque converted replaced. The second incident...same thing different location. …”

   NHTSA complaint #10521141, filed 2013-06, 84,822 miles
3. 3
   Electrical system

   Stalling or no-start from water in the control module

   • 6 complaints (5%)
   • median 75,000 mi at 7.0 yrs old (6 state mileage, few)
   • filed 2011–2013

   Owners describe the engine shutting off while driving or the van refusing to start, sometimes with the engine running but no drive, and multiple warning codes stored. According to complaints, dealers found water inside the powertrain control module and corroded or shorted connector pins, and replaced or resealed the module and in one case the wiring harness. Some owners report the problem came back after the repair. Reported from about 50,000 to 130,000 miles, with several around 65,000-90,000; no clear seasonal pattern in the sample.

   2 related service bulletins

   What to check: Ask whether the powertrain control module or its connectors have been replaced, and have a shop check the module area and connector pins for moisture or corrosion before buying.

   2 excerpts from owner complaints in NHTSA records

   “Stall engine with no power for forward or reverse. Malfunction indicator comes on and the vehicle will not start for more than couple seconds. Multiple ABS and drive codes based on the eec test. Repair shop inspects the vehicle and found water intrusion to the powertrain control module (PCM) and the connector pins where short out.”

   NHTSA complaint #10475523, filed 2012-09, 86,368 miles

   “The contact owns a 2005 Mercury Monterey. The contact was driving approximately 25 MPH when the vehicle suddenly accelerated, the contact depressed the brakes but the vehicle would not respond. After utilizing the parking brake, the vehicle stalled. The vehicle was towed to the dealer for diagnostics. The technician stated that water had entered the wiring of the computer system and caused the failure. The technician dried the wiring but the failure recurred. …”

   NHTSA complaint #10453917, filed 2012-04, 17,000 miles

Buying note. The transmission is the deciding factor on this model year: ask for proof that recall 12V006000 was completed and budget for a possible transaxle or torque converter repair. A pre-purchase inspection that checks for water at the powertrain control module and rust around the rear wheel wells is worth the cost.

Summary written with AI from a sample of 60 NHTSA complaints for this model year (picked at random, with complaints that state a mileage and recent ones taken first), then checked automatically against the source records. Where a problem shows a complaint count, every complaint for this model year was matched with fixed keyword rules (written with AI and tested against the sample), and the mileage, age and repair figures are calculated from those complaints; owners' figures are as stated, not verified. Other counts refer to the sample. The excerpts come from NHTSA's public complaint records and are unverified; capitalisation is normalised, NHTSA staff notes are removed, and shortened text ends with “…”. Something wrong? Request a correction.