Change Mercedes Key to LCD Smart Car Key Easily

iSun

·July 23, 2024

·5 min read

Change Mercedes Key to LCD Smart Car Key Easily

Changing your Mercedes key to an LCD smart car key offers numerous benefits. The smart key system simplifies opening, closing, and starting the vehicle. With the proximity lock system, the car key automatically unlocks when approaching and locks when moving away. This upgrade enhances convenience and security, making the car key more functional and stylish. By following the steps carefully, you can ensure a smooth transition to the new key. Paying proper attention to detail guarantees that the new LCD smart car key works perfectly with your Mercedes.

Tools and Materials Needed

List of Tools

Screwdrivers

Screwdrivers are essential for opening the key housing. A set with various sizes will help tackle different screws. Precision screwdrivers work best for this task.

Soldering Iron

A soldering iron is crucial for attaching the key harness. Ensure the soldering iron heats up quickly and maintains a stable temperature. This tool will help secure the connections properly.

Prying Tools

Prying tools assist in opening the key housing without causing damage. These tools come in handy for gently separating the parts. Plastic prying tools are recommended to avoid scratches.

List of Materials

LCD Smart Key Kit

The LCD Smart Key Kit includes the new key fob and necessary components. This kit is designed specifically for Mercedes vehicles. Ensure compatibility with your car model before purchasing.

Replacement Battery

A replacement battery provides the power needed for the new smart key. The battery should match the specifications of the original key. Always have a spare battery on hand for future needs.

Soldering Wire

Soldering wire is used to make secure electrical connections. Choose a high-quality soldering wire for reliable results. The wire should melt easily and create strong bonds.

Having these tools and materials ready will make the upgrade process smoother. Each item plays a vital role in ensuring the new LCD smart key functions correctly.

Step-by-Step Guide to Change Mercedes Key to LCD Smart Car Key

Opening the Key Housing

Locating the Screws

First, find the screws on the existing car key. These screws usually hide under the key's logo or a small cover. Use a small flathead screwdriver to gently lift the cover and reveal the screws. Make sure to keep these screws safe for reassembly later.

Using Prying Tools

Next, use prying tools to open the key housing. Insert the prying tool into the seam of the key housing. Gently twist the tool to separate the two halves. Be careful not to damage the plastic casing. Plastic prying tools work best to avoid scratches or cracks.

Removing the Chip

Identifying the Chip

Once the key housing is open, locate the chip inside. The chip looks like a small circuit board. This chip controls the car's locking and unlocking functions. Carefully examine the key's interior to identify the chip.

Safely Extracting the Chip

Use tweezers to extract the chip from the key housing. Gently lift the chip without applying too much force. Ensure that no other components get damaged during this process. Place the chip in a safe spot to prepare for the next steps.

Soldering the Key Harness

Preparing the Soldering Iron

Plug in the soldering iron and let it heat up. Make sure the soldering iron reaches a stable temperature before use. A hot soldering iron ensures secure connections. Keep a damp sponge nearby to clean the tip of the soldering iron.

Attaching the Harness

Take the key harness from the LCD smart car key kit. Position the harness on the chip's contact points. Use the soldering iron to attach the harness to the chip. Apply a small amount of soldering wire to create strong bonds. Double-check the connections to ensure they are secure.

Installing the New LCD Smart Car Key

Placing the Chip

Start by placing the extracted chip into the new LCD smart car key. Align the chip with the designated slot inside the new key housing. Ensure the chip sits firmly in place without any loose connections. A secure fit will guarantee proper functionality.

Securing the Housing

Next, close the key housing by aligning the two halves. Press them together until you hear a click, indicating that the housing is securely fastened. Use the screws removed earlier to tighten the housing. A snug fit ensures the key remains intact during use.

Programming the New Key Fob

Using the Car's Interface

To program the new key fob, sit inside the car and insert the key into the ignition. Follow the car's interface instructions to sync the new key. The car's manual will provide specific steps for programming. This process ensures the new key communicates with the car's security system.

Testing the New Key

After programming, test the new key to confirm its functionality. Stand near the car and press the lock and unlock buttons. The car should respond immediately. Also, start the engine to verify that the key works correctly. Testing ensures the upgrade was successful and the new key operates smoothly.

Upgrading your Mercedes key to an LCD smart car key involves several straightforward steps. The process includes gathering the right tools and materials, opening the key housing, removing the chip, soldering the key harness, installing the new key, and programming it. This upgrade offers numerous benefits, such as enhanced convenience, security, and a modern look. Following this guide ensures a smooth transition to the new key. Embrace the future of car keys and enjoy the added comfort and functionality that come with this high-tech accessory.