How to Disassemble the BMW U-Chassis BCP Key Shell

This article provides a detailed guide on how to safely disassemble a BMW U-chassis BCP key shell without causing damage. By following the steps carefully, you can remove each part of the key housing smoothly, which is especially useful for key repair, shell replacement, or internal component work.

Step 1: Remove the Silver Side Cover

First, locate the release button on the back of the key.

1. Press the release button down firmly

2. While holding it, push the silver side cover upward

3. Slide the cover outward and remove it completely

Once done, the silver side cover will come off easily.

Step 2: Remove the Key Back Cover

There are two locking clips on the back cover, located at Position 1 and Position 2.

1. Turn the key on its side and place both thumbs on Position 1

2. Push the black cap upward with your thumbs

3. When you hear a “click,” the Position 1 locking clip is released

4. Next, place both index fingers on Position 2

5. Push the cover in the opposite direction

6. When you hear another “click,” the Position 2 locking clip is released

At this point, the back cover can be removed without any damage.

Step 3: Remove the Front Cover

1. First, release the single locking clip at the bottom of the front cover

2. Then, gently peel the cover open along its edge

3. The two locking clips at the top will disengage smoothly

After this, the front cover can be removed safely.

Step 4: Remove the Logo and Button

1. To remove the side button, push it upward from the bottom using your fingers

2. Carefully take out the battery compartment

3. Pay close attention to the positive and negative polarity of the battery during removal

Step 5: Remove the Lanyard Buckle

1. Insert needle-nose pliers into the lanyard hole

2. Pry upward firmly to separate the lanyard buckle from the retaining claw

3. Remove the lanyard buckle completely

Step 6: Remove the Release Button

Before prying open the release button, take the following precaution:

1. Gently press the surface of the release button with your thumb

2. This prevents the button from popping out suddenly and avoids the internal spring from flying out

Once the locking clip is released, remove the release button smoothly.

Disassembly Complete

You have now completed the BMW BCP key shell disassembly without damaging any components.

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