How to Replace the Battery in an Older Mercedes-Benz GL450 Key?

[JosephFitz]

Method for replacing the battery in an older Mercedes-Benz GL450 key: First, slide open the tab at the rear end of the key to remove the mechanical key. Insert the mechanical key into the side slot of the key holder, press the internal gray button, and with the other hand, push the rear end of the key upward. Once a gap is created, the mechanical key can be removed. Then, manually take out the rear end to access and replace the battery. After replacement, reinsert the key holder. The Mercedes-Benz GL450 is a full-size SUV with body dimensions of 5099mm in length, 1920mm in width, and 1840mm in height, featuring a wheelbase of 3075mm. It is equipped with a 4.7-liter naturally aspirated engine.