2003 Mercedes-Benz C240 Key Fob Battery Replacement Guide
Keyless entry remote allow easy access to your C240. Once the remote key fob battery is dead or weak you will not to be able open doors from distance. Yes, it is possible to change the battery in your keyless entry remote DIY. All you need is explained in this post.
What type battery does 2003 Mercedes-Benz C240 keyless entry remote requiredBefore going to open keyless entry remote be sure that you have all required tools and materials: 2xCR2025 batteries and flat head screwdriver.
- 2xCR2025 batteries
- flat head screwdriver
Step by step guide
A coin battery installed in the your keyless entry remote. Move the key out of the way if it is in the key fob.
Delicately try to pry apart your fob with pry tools. Change 2xCR2025 batteries with flat head screwdriver.
Replace old batteries with fresh one CR2025. Battery must be installed with the same position as was an old. Your key will not work if you by mistake place battery wrong way.
Before assembling fob’s case, check that all functions works by pressing buttons on circuit board.
At this point squeeze fob’s back cover together. Line your body two halves together and put it together by hands from top to bottom. If your fob case firmly closed, we done. If not, repeat the last step.
Video of remote key fob disassembly
Mercedes Benz Key Fob Case Change and Battery Replacement Remote
Still not working? Buy new one