1. Carefully pry off the cover housing with a screwdriver.
2. Remove the three plastic latches from the upholstery of the ceiling and remove the cover.
3. Disconnect the two blocks with wires from the contacts of the ceiling.
4. Release the two plastic tabs...
5.... and remove the holder with the cartridge and the lamp from the housing.
6. To replace the bulb, turn it 90°and remove it from the socket.
7. Assemble and install the cover in reverse order. Install the holder with the cartridge into the housing so that the lower contact of the holder fits onto the sliding contact of the switch in the housing.
1 - body; 2 - sliding contact