How to Replace the Key Battery for Mercedes-Benz ML350?
3 Answers
The method to replace the key battery for Mercedes-Benz ML350 is as follows: 1. There is a button on the back of the key, press this button and push the back cover forward; 2. After opening the key, the battery is located in the slot beside it; 3. Remove the old battery and replace it with a new one. Taking the 2015 Mercedes-Benz ML350 as an example, it is a mid-to-large-sized SUV with body dimensions of: length 4844mm, width 1926mm, height 1796mm, and a wheelbase of 2915mm. The 2015 Mercedes-Benz ML350 is equipped with a 3.0L turbocharged engine, with a maximum horsepower of 258PS, maximum power of 190kW, maximum torque of 620Nm, and is paired with a 7-speed automatic manual transmission.
The process of replacing the battery for a Mercedes ML350 key is quite straightforward. First, I prepare a new CR2032 battery, which can be easily purchased at a supermarket or online for just a few dollars. Then, I take the key, locate the small gap on the back, and gently pry open the cover using a coin, being careful not to scratch the plastic. When removing the old battery, pay attention to the positive and negative polarity. Similarly, align the new battery correctly to avoid reverse installation, which would prevent it from working. After closing the cover, press firmly to ensure the latch snaps into place. Then, test the unlock function by pressing the key buttons. The whole process takes about five minutes. Doing it yourself saves a trip to the dealership and unnecessary expenses, while also familiarizing you with the key's structure. Storing the key in a dry place can extend the battery's lifespan, and it's best to replace it annually without delay.
To replace the key battery, start with safety preparations: remove the car key and find a clean workbench covered with a cloth, wearing anti-static gloves to avoid circuit damage. The cover of the Mercedes ML350 key is at the back; carefully pry it open with a blunt tool like a key ring, avoiding excessive force to prevent breaking the clips. After removing the old CR2032 battery, note its orientation—the new battery of the same model should be installed with the negative side usually facing downward. Close the cover evenly and press until you hear a click, then immediately test the button response. Choose branded batteries to prevent leakage. If you encounter difficulties, pause and refer to the mobile app for tutorial videos, following the steps one by one. DIY not only saves money but also boosts confidence.
