Mercury Mountaineer won't shift problems

Filed Feb 2, 2023 · Transmission · MT

The Transmission won't shift into 3rd and 4th gear, hitting hard into gears at starting, slipping begins after 35 mph..replaced torque converter.

Filed Dec 9, 2019 · Transmission · 160,538 miles · FL

The o/d light keeps flashing and it doesn't shift into gear when pulling out in front of oncoming traffic its vary dangerous for myself and other drivers please address this on going problem with this transmission

Filed Jun 13, 2019 · Electrical · 140,859 miles · UT

I was driving home on a busy city street when I stop at a stop light to turn right. When I went to accelerate my mercury mountaineer when in to limp mode. As I inspected the SUV for problems I noticed the my engine/transmission wire harness was brittle and exposing bare wire and that the wires were touching each others cause them to short off the vehicle computer system and frying electrical components. It also caused the transmission to malfunction and shift wrong which in turn causing the torque converter to fail and destroy the transmission.

Filed Apr 8, 2019 · Transmission · 166,000 miles · IL

The gear shaft will stop my car from starting when I turn it off. It will also make my car vut off while driving..the button on the gear stick will get stuck and I am able to shift gears...when the car is not started and my foot is not on the breaks. Even when the button is not stuck, it still will get stuck in park and wont let me start my car..a recall should be started..because I have seen others on here with similar complaints..so its a manufacturing accident not the consumer.

Filed Jan 28, 2018 · Transmission · 121,000 miles · VA

Transmission would not shift out of low gear

Filed Nov 4, 2017 · Acceleration, Body · 130,000 miles · MO · crash

My 2007 mercury mountaineer never had any problems until recently, thought it was the transmission because of the way it drove. Took it to the mechanic and got transmission fluid put in but the problems remained the same and was told the transmission was fine. My thermostat housing unit was leaking (this is very common with these cars and very dangerous, needs immediate attention!) and had caused very expensive wiring issues. Almost acts exactly like the transmission is going out - RPM's are way too high, the vehicle would not accelerate in the middle of city traffic, the car jumped at a stoplight and caused me to hit the car in front of me, and it doesn't shift properly. Problems occurred out of nowhere and are too dangerous to be ignored but very expensive to be fixed. Its very common and should be recalled before someone gets seriously injured!!!!

Filed Nov 21, 2016 · Acceleration, Electrical · 150,351 miles · WI

When going 25-30 MPH vehicle will not shift.it actually kicked the vehicle back. Od light started to flash then service engine soon light came on.been doing this since. Went to go get mountaineer read and of coarse..the transmission..something needs to be done otherwise this might eventually lead to a lawsuit after reading all of the complaints on the exact same thing.

Filed Apr 30, 2016 · Transmission · 135,000 miles · MD

2nd mountaineer owned transmission will not shift in low gears and unresponsive. Stalled in town and on highway at high speeds almost causing collisions several times after becoming unresponsive while driving.

Filed Feb 7, 2015 · Transmission · 104,000 miles · ND

While driving the "od" light started flashing and the vehicle would not shift from 2nd to third gear. It would just rev up. If you let off the gas it would usually shift into 3rd gear. I was going to try to check the fluid but couldn't find the dipstick. I checked the manual and found out there is none. When I checked online for help I found all the other complaints that were exactly like mine. It is very disappointing that ford will not issue a recall on this obviously poorly designed transmission. This is a very expensive part for an owner to replace and is a safety issue as you could lose the ability to accelerate at a critical moment. With as many complaints as I am seeing online there should definitely be a recall. I hope it doesn't take somebody getting hurt or killed for action to be taken.

Filed Sep 25, 2014 · Electrical, Steering · 18,000 miles · MD

I went to take my vehicle for emissions test and oil change and when I went to move the gear shift from park to drive, it just dangled in the air. I found this totally unbelievable!!!!!, needless to say, my key was stuck in the ignition due to it being stuck in park. I had to have it towed and steering column replaced. Then yesterday while having the brakes fixed and trying to have it test driven, the key was stuck in the ignition again and not able to move to the engine start position. This is ridiculous, it needs to be something done about this situation since this is at some point, cause an injury. Fortunately, both times my vehicle was parked. But what if someone else isn't? Please help us out. These are nice vehicles and this is giving them a bad rep. Thank you.