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 operate correctly, permitting you to lock and unlock your automobile, in addition to begin the engine.
You have to a brand new CR2025 battery, which could be bought at most {hardware} or automotive shops. Additionally, you will want a small Phillips head screwdriver.