How to Replace the Battery in a Mercedes Key?
2 Answers
Mercedes key battery replacement method is as follows: 1. There is a sliding switch on the head cover of the Mercedes car key. 2. Push this sliding switch by hand to open and remove the mechanical key. 3. Insert a small metal object and gently pry to remove the Mercedes logo plate. After removal, you can see the key battery. Replace it with a new battery for normal use. Below is relevant information about Mercedes key battery lifespan: (1) The lifespan of a Mercedes key battery is generally two years, while the original factory battery can last up to six years. (2) When the key battery is depleted, the Mercedes vehicle will provide alerts in two forms.
Replacing the battery in a Mercedes key is actually quite simple, and I often do it at home. The steps are: First, gently pry open the clips on the back cover of the key with your finger or a coin, being careful not to use too much force to avoid damage. Take out the old battery and check the model clearly—it's usually a CR2025 coin cell, so don't mix it up. Then, insert the new battery, making sure the positive side faces up, and press the cover back into place until it locks. The whole process takes just a few minutes, saving you the cost and time of going to the dealership. Also, avoid placing the key in damp environments or near electromagnetic devices to prevent faster battery drain. It's recommended to check the battery every six months, and if the remote range shortens, it's time for a replacement. This method is both cost-effective and convenient, and even beginners can do it with a little care.
