Changing the important thing battery in a Mercedes-Benz is an easy job that may be accomplished in a couple of minutes. A brand new battery will be certain that your key fob continues to perform correctly, permitting you to lock and unlock your automobile, in addition to begin the engine.
You will want a brand new CR2025 battery, which may be bought at most {hardware} or automotive shops. Additionally, you will want a small Phillips head screwdriver.