Various problems with the 5-speed automatic transmission were common. These problems can be more common on the 2002 models with build dates before March, 2002. There are many service bulletins describing the diagnoses and repairs, which include fluid leak repairs, transmission software updates, or internal failures requiring a costly repair.
Problems With Early Production 5-speed Automatic Transmission on Mercury Mountaineer
Average mileage: 121,271 (70,000–164,000)
Drive Trains affected: 2WD, 4WD
18 people reported this problem
11 people shared problem details
2002 Mercury Mountaineer- 4WD70,000Visitor
Transmission started down-shifting at speed. New transmission and bore and servo work : $3400
had to get the transmission rebuilt because the O/D light came up and the transmission started skipping and didn't allow you to go fast. it cost $1000 to get it fix.
2008 Mercury Mountaineer- 4WD87,000Visitor
Transmission failed requiring total rebuild.
2002 Mercury Mountaineer- 4WD102,900Visitor
check transmissin message. Incorrect gear ratio 5th gear reliable tranny shop $2,100 mercury $3600. Light only came on once.might look for new car
2002 Mercury Mountaineer- 4WD124,674Visitor
Tranny won't pull in any gear j servants to sit and rev up
2004 Mercury Mountaineer128,000Visitor
Transmission started slipping the RPMs raises higher than the truck is going then eventually it will catch up
2004 Mercury Mountaineer- 2WD130,000Visitor
Mi trasmision no da rebersa pero los demás cambios funcionan bien. El mecánico dise que son los selenoides camviaro el asiste y no se veían rebabas.pude ser eso o es megor cambiar toda la trasmisión
2002 Mercury Mountaineer- 4WD110,000Visitor
would not change gears needed new transmission
2002 Mercury Mountaineer- 4WD120,000Visitor
Per Transmission shop needs new transfer case & possibly may need entire transmission rebuilt. GREAT!
2002 Mercury Mountaineer- 2WD120,000Visitor
Had to replace servo bores in tranny along with major overhaul. $2600!
OD off flahes in msg center, and check engine indicator comes on. Waldorf Ford recommends trans replacement @ $3700.00
power windows will not operate. where are (and how many) the fuses?
mercury mountaineer showing 4x4 lights are flashing on dash and were can i get it service.
should I drive with over drive off or on?
Need a switch with lumbar support control.
A few months ago start this litle problem whit the windows , don´t go down when I push the boto...