How to Replace the Battery in an Older Mercedes ML350 Key Fob?
1 Answers
Here are the detailed steps for replacing the battery in an older Mercedes ML350 key fob: 1. First, flip open the sliding tab at the rear end of the key fob to remove the mechanical key. 2. Insert the mechanical key into the side slot of the key fob, press the internal gray button while gently pushing the rear end upwards with your other hand. Once a gap appears, remove the mechanical key. 3. Then, manually remove the rear cover, replace it with a new battery, reinsert the key bracket, and the battery replacement is complete. Note: The typical lifespan of a Mercedes key fob battery is about two years, while the original factory battery can last up to six years.