How to Replace the Key Battery for the New Mercedes-Benz S350L 4MATIC?

[VanAdaline]

Here is how to replace the key battery for the new Mercedes-Benz S350L 4MATIC: 1. There is a button on the back of the key. Press this button and slide the back cover forward to open the key. 2. The battery is located in a slot nearby. Remove the old battery by opening the slot and replace it with a new one. 3. Reattach the back cover of the key. Once installed, the battery replacement is complete. Related information about the Mercedes-Benz S350L: The Mercedes-Benz S350L is a full-size luxury sedan under the Mercedes-Benz brand. The dimensions of this vehicle are 5259 mm in length, 1899 mm in width, 1497 mm in height, with a wheelbase of 3165 mm.

[MacRylee]

I've encountered this issue before – it was quite a panic when my Mercedes key fob battery died! New car keys are usually designed quite ingeniously. Take the Mercedes S350L 4MATIC key for example: there's a small groove on the side where I gently pry open the plastic cover using a small coin. After opening it, remember the battery is that round button type, typically CR2025 or similar models. Be careful not to install it upside down – just place it with the positive side facing upward. Then press the cover firmly until you hear a click to ensure it's securely locked, otherwise the remote might not work. I've also noticed these key batteries generally last about a year. When not in use, avoid storing them in hot places like sun-exposed areas in the car, as heat shortens battery life. To save money, I recommend buying the same battery model at supermarkets – just a few bucks solves the problem, no need to waste money at dealerships. DIY replacement is simple, quick, and saves both time and effort.

[MichaelDella]

The battery in my Mercedes-Benz S350L key was running low, so I've replaced it myself several times. First, I feel for a small indentation on the side of the key with my finger, then use a flat, hard object to pry it open. When removing the old battery, be careful not to use too much force. Then, insert the new CR2025 battery with the positive side facing up - that's crucial. After closing the cover, press the key buttons a few times to test the functionality. I find that the key battery typically lasts about two years, but if you frequently use the remote start feature, it drains faster, so I recommend checking it occasionally. As a family car, handling these minor repairs ourselves instead of hiring professionals can save hundreds each year. I've also taken the opportunity to teach my child some practical life skills, which has been quite useful.

[OThomas]

I've changed the battery in my Mercedes key multiple times, and the steps are quite simple: First, locate the small gap on the key, use a coin to pry open the casing, remove the old battery, and replace it with a new CR2025 model, making sure the positive side faces up—don't get it backwards. Then, close the cover and press a button to test if it works properly. The whole process takes just a few minutes and is very hassle-free.