How to "fix" doesn't tell us nearly enough. Much more information re. what exactly the problem seems to be, is needed for a good answer
How do i change the chain out of my 1998 mercury mountaineer transfer case
Motorcraft MERCON automatic transmission fluid ( 2.64 pints / 1.25 liters ) is used in the transfer case of a 1997 Mercury Mountaineer
For the 4.0 liter SOHC , V6 engine use ( 5W-30 engine oil ) For the 4.6 liter V8 engine use ( 5W-20 engine oil ) For the AWD transfer case ( and the 4X4 transfer case ) use Motorcraft MERCON automatic transmission fluid According to the 2004 Mercury Mountaineer Owner Guide
I am pretty sure that it is non existent, i have a 99 mountaineer and it is AWD and i am going to assume that yours has either FWD or AWD which means it has a transmission and a transfer case not a transaxle
Replace the transfer case , had same problem and that's what it was.
if its only happening at slow speeds like pulling into or out of a parking space its the transfer case i just got mine replaced. called junk yard got transfer case call dealership and get gasket and seal and you are good to go.
A transfer case is used on an all wheel drive vehicle , or a 4X4 vehicle , and is bolted to the rear of the transmission If you mean the transaxle ( transmission ) on a 2004 Mercury Sable it is bolted to the engine inside the engine compartment ( on the drivers side )
auto trak 2
Check behind the glove compartment. The TCCM (Transfer Case Control Module) is located there on some Ford vehicles like the Exploder and the Ranger.
The transfer case on a 2004 Ram uses ATF+4.
I'm not sure if Mercury followed Ford with the introduction of the new HVAC system in 2003. That is probably the case and the system and problems will be the same as the Ford Explorer. Pictures to identify which system you have and diagnostic processes are available on heatertreater.net.
The automatic transmission takes Motorcraft MERCON - " V " - automatic transmission fluid The transfer case takes Motorcraft MERCON - automatic transmission fluid