How to Open Your 2002 Ford Expedition Key Fob & Change Battery

If your car remote key fob isn't open doors well, the battery probably must to be changed. It's not complicated to change the battery in your keyless entry remote, and itโs easier than you think. All you need is outlined below.
What is the battery remote key fob require
Before starting open remote key fob be sure that you have all recommended tools and materials: flat head screwdriver and 1xCR2032 battery.- flat head screwdriver
- 1xCR2032 battery
Simple steps to change the battery in your car's key fob
Inside of your keyless entry remote installed tiny coin battery. Carefully try to disassemble your remote key fob with hands or flat head screwdriver. Replace one CR2032 battery with flat head screwdriver.
Change old battery with new one CR2032. Every battery has a negative and positive side and if you put the wrong connector down, the current cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.
Before assembling fobโs case, verify that all working good by pressing buttons on key fob.
At this point squeeze keyless entry fob's back cover together. Line your shell pieces together and assemble it in place by hands from top to bottom. If your keyless entry remote case tightly closed, we done. If not, repeat the last step.
How to replace the battery video instruction
How To Replace Ford Expedition Key Fob Battery 1998 1999 2000 2001 2002 2003 2004 2005
Still not working? Buy new one