Mercury Mountaineer OEM 3 Button Key Fob CWTWB1U331

This is a Factory OEM (Original Equipment Manufacturer) Mercury Mountaineer 3 Button keyless entry remote, aka “key fob”.

Factory OEM electronics in a new aftermarket case.

1998-2010 Mercury Mountaineer

*** THERE ARE 2 POSSIBLE PROGRAMMING PROCEDURES. ***

Procedure #1
Note: Obtain all remote transmitters for this vehicle.

Note: Do not depress the brake pedal during procedure.

1. Turn ignition from OFF to RUN 8 times within 10 seconds, with the 8th time ending in RUN. Door locks will cycle to confirm programming mode. (Off is the position where you can remove your key, RUN is the position just shy of starting your car.)
2. Within 20 seconds press any button on the first keyless remote to be programmed. Door locks will cycle to confirm programming. If you only have one remote then skip to step 4.
3. Within 20 seconds, press any button on the second keyless remote. Door locks will cycle again to confirm programming. Repeat step 3. For all other remotes.
4. Turn ignition to OFF. Locks will again cycle to indicate end of programming mode.

   Procedure #2
   Note: Obtain all remote transmitters for this vehicle.

5. Fasten seat belts and close all doors.
6. Turn ignition from OFF to RUN 4 times within 6 seconds, with the 4th time ending in RUN. (Off is the position where you can remove your key, RUN is the position just shy of starting your car.)
7. Turn ignition to OFF. Acoustic signal will sound and system warning lamp will illuminate to confirm programming mode.
8. Within 10 seconds, press and hold any button on the first keyless remote. Wait for acoustic sound and warning lamp to flash (confirming programming) then release button on remote. Wait 2 seconds but within 10 seconds repeat step 4. For all other remotes. If you only have one remote then continue to step 5.
9. Turn ignition to Crank or wait 10 seconds to end programming mode.

OEM Key Fobs:

We are proud to offer true OEM key fobs direct to you at up to 80% off dealer prices. There is a catch though, so here it goes:

You need to know the only way to get a NEW OEM key fob is to go to a dealer or authorized reseller of OEM parts, and you will pay dealer prices if you do this and spend hundreds of dollars.

Our Products:

The key fob you are going to purchase from us is used or as we like to say “previously loved”. We recycle OEM key fobs and put them through a rigorous refurbishing process so we can guarantee our products and offer them at a reasonable price along with saving the environment. Oh, and we are not robbing you of your hard earned dollars like the stealership does. So if you are good with all of this what are you waiting for? Make your life easier, order a key fob from us and save the world!

Mercury Mountaineer OEM 3 Button Key Fob CWTWB1U331