How to Replace the Battery in a Mercedes-Benz E55 Key?

[StHope]

Mercedes-Benz E55 key battery replacement method is: 1. Press the button on the back of the key; 2. Push the back cover of the key forward to open it and remove the old battery; 3. Install the new battery and reattach the key cover. The Mercedes-Benz E55 has the following dimensions: length 4818mm, width 1822mm, height 1452mm, with a wheelbase of 2854mm, a fuel tank capacity of 80 liters, and a curb weight of 1835kg. The Mercedes-Benz E55 is equipped with a 5.5-liter V8 engine, delivering a maximum power of 200kw and a maximum torque of 700nm, paired with a 5-speed automatic transmission.

[VonChloe]

Replacing the battery in a Mercedes E55 key is actually quite simple, as I've handled similar keys before. First, locate the small gap on the key and gently pry open the casing using a flathead screwdriver. Inside, you'll typically find a CR2032 coin cell battery—make sure not to get the model wrong. Carefully remove the old battery, avoiding contact with the metal parts to prevent short-circuiting. Install the new one, reassemble the casing, and test the remote locking function. If the casing is hard to pry open, it might have hidden clips—don’t force it. It’s advisable to keep a spare battery in the car for emergencies. The whole process takes at most five minutes, and even beginners can manage it, but ensure you have the right tools and avoid using oversized ones that could damage the key.

[LylaRose]

As an E55 owner, I've replaced the key battery myself several times. Find a quiet place, carefully observe the gap on the back cover of the key, and gently pry it open with your finger or a small blade. The battery is a common CR2032 type, available at convenience stores. After removing the old one, clean the contacts before inserting the new battery. When reassembling, align the clips properly and test the lights or remote function by pressing the buttons. Don't worry about breaking it - the design is very user-friendly. After replacement, the key will respond faster, saving you money and hassle. I recommend checking it every two years to avoid sudden failure that might delay your car use.

[LaJosie]

When replacing the E55 key battery, I'll follow the steps one by one. First, check if the key can be disassembled—most are slide-open types. Use a small tool to gently open it to avoid scratching the casing with excessive force. The battery model is usually CR2032, which can be bought at supermarkets. After installing the new battery, ensure the positive and negative poles are correctly oriented. Reassemble and test it; if the remote locking works normally, you're good. For safety, turn off the engine during the operation and wear gloves to prevent static electricity. If there's still no response after replacement, the buttons might be worn out—consult a repair shop. It's a simple task that can be done within five minutes, so don't overcomplicate it.