How to Open Your 2008 Mercedes-Benz CLS550 Key Fob & Change Battery
Remote key fob grant easy access to your car. When the remote key fob battery is discharged you lose your keyless entry fob's ability to control distance opportunities. Yes, it is possible to replace the battery in your key fob, and it’s easier than you think. All you need is described below.
What kind of battery key fob require
Before starting open remote key fob be sure that you have all required tools and materials: CR2025 batteries and flat head screwdriver.- flat head screwdriver
- 2xCR2025 batteries
Step by step instruction
A coin cell battery installed inside the your remote key fob. Remove any internal key before you try to pry apart the keyless entry remote.
Accurately try to open your fob with flat head screwdriver. Change CR2025 batteries with flat head screwdriver.
Change old batteries with fresh one CR2025. Battery must be installed with the same polarity as was a previous. Your remote key fob will not work if you by mistake put battery wrong way.
Before assembling fob’s case, check that all functions works by testing buttons on circuit board.
At this point squeeze fob’s back cover together. Line your shell pieces together and assemble it in place by hands from top to bottom. Inspect your key body for gaps. If it is not firmly closed try to repeat last step.
How to change the battery video instruction
SOLVED - Mercedes Benz Keyfob Battery Replacement | Smart Key Fob Dead Batteries
Still not working? Buy new one