I replaced the 7.5A fuse (fuse #7) on the side of the headlight switch, it did not do anything different. I then swapped the socket with the working bulb from driver side to passenger side, the driver side light up but passenger side did not. I then swapped again and try to seat the socket on the passenger side harder and it works.

The question I have now is how to keep the socket (bulb holder) tightly in contact with the light assembly, if the car hits a bump it may get loose again.

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'00 E430 Brilliant Silver/Ash