How to Replace the Battery in a 2002 Mercury Mountaineer Key Fob
If your auto key fob is not unlock doors perfectly, the battery likely must to be replaced. In this article, we explained how to open your car keyless entry remote and replace your Mercury key battery.
What size battery does 2002 Mercury Mountaineer keyless entry remote takeDon't forget before disassembly keyless entry remote be sure that you have all recommended tools and materials: flat head screwdriver and 1xCR2032 battery.
- 1xCR2032 battery
- flat head screwdriver
Step by step instruction
Inside of your key fob installed small button cell battery. Carefully try to pry apart your key with hands or flat head screwdriver. Change CR2032 battery with flat head screwdriver.
Replace old battery with new one CR2032. Be sure to connect the battery the right way around in a circuit. Your key will not work if you put battery wrong way.
When the new battery installed, check keyless entry remote functionality by pressing buttons. If all functions works, assemble your keyless entry fob's body in reverse order.
The last thing to do is put your cover back on fob. Gently try to assemble the pieces in place by hands from top to bottom. If your fob shell firmly closed, we done. If not, repeat the last step.
How to replace the battery video instruction
How To Replace Mercury Mountaineer Key Fob Battery 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007