Chrismar

hello, I changed the driver door and have a slightly different door handle, with IR sensor, by its color.
W210 E320 CDI may 2001 typ WDB2102261B379511






the power supply cable of the sensor seems not to be dismountable, there is no connector.
(the sensor is in the middle of the cover, close to the hole of the lock).
I removed the lock, the sensor cover and the keyhole are remaining.
On the other hand, it seems that this little cache (black on the picture), which I would like to replace with mine, gray, seems to be impossible to remove; yet there are small clips all around but it does not come. he seems to be restrained by the middle of the part, around the hole .
Who knows this model? the sensor itself seems to be unremovable, too.
It is the wire that prevents to swap the whole, the old and the new set, IR sensor and its cover.
Any Idea ?
Thanks for your lights !