How to Open Your 2002 Mercedes-Benz S500 Key Fob & Change Battery
Key fob grant easy access to your auto. When the key fob battery is discharged you will lose your fob’s ability to control distance functions. It's not complicated to change the battery in your remote key fob, and it’s easier than you think. All you need is explained in this article.
What size battery does 2002 Mercedes-Benz S500 remote key fob requiredChanging batteries in keyless entry remote require flat head screwdriver and 2 CR2025 batteries. Prepare these materials and tools before opening and make sure to match the type of your keyless entry fob's batteries.
- flat head screwdriver
- 2xCR2025 batteries
Step by step instruction
Inside of your key fob installed button battery. Remove any internal key first, and then try to pry apart the keyless entry remote.
Gently try to disassemble your remote key fob with flat head screwdriver. Remove two CR2025 batteries with flat head screwdriver.
Replace old batteries with fresh one CR2025. Every battery has a negative and positive side and if you put the wrong connector down, the charge cannot go into your circuit board and make it work. Check polarity on battery, by "+" mark.
Before assembling keyless entry fob's case, make sure that all functions works by pressing buttons on circuit board.
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. Inspect your remote key fob body for gaps. If it is not tightly closed try to repeat last step.
How to replace the battery video guide
SOLVED - Mercedes Benz Keyfob Battery Replacement | Smart Key Fob Dead Batteries
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