New replacement BMW main light drive LED module with OEM part number: B009521-A 63117428789 90068145 A1 MD E9 11710

There are several reasons why the LED module 63117428789 may need to be replaced:

Malfunction:

• The most common cause is a burned-out LED module. This can cause the daytime running light to flicker, dim, or completely turn off.
• In some cases, the LED module may not work properly due to a problem with the wiring or connector.

Physical damage:

• The LED module may be damaged by shock, vibration or exposure to extreme temperatures.
• If the LED module is cracked or chipped, it must be replaced for safety reasons.

Aesthetic problems:

• Over time, the LED module may yellow or fade, making the daylight less attractive.
• If you want to maintain a uniform aesthetic appearance for your car, you may need to replace the LED module even if it is working properly.

Obsolescence:

• It is possible that the LED module is no longer manufactured and that original spare parts are not available.
• In this case, you may need to replace the LED module with a compatible aftermarket unit.

Performance improvements:

• In some cases, it may be possible to upgrade the LED module to a higher-performance unit that provides brighter light or a different color.

Diagnosing the problem:

If you suspect that your 63117428789 LED module is defective, it is important to carefully inspect it for any physical damage.

• You can also test the LED module using a multimeter to see if it is receiving power and working properly.

Replacing the LED module:

If you determine that your LED module needs to be replaced, it is important to use a genuine or high-quality replacement part that is compatible with your vehicle model.

• Replacing the LED module is a relatively simple operation that can be done yourself with the right tools and a little manual dexterity.