Mercedes benz 164 OverHead control Unit

· 1 Rear dome lamp switch
· 2 Door contact ON and OFF switch
· 3 Dome lamp ON and OFF switch
· 4 Front dome lamp
· 5 Roof switch
· 6 Left front reading lamp switch
· 7 Left front reading lamp
· 8 Right front reading lamp switch
· 9 Right front reading lamp
The overhead control panel control unit reads sensors and switches and controls their functions. Depending on the requests received, consumers are switched or supplied with voltage and signals are transmitted or received via CAN-B.
Control
• Panoramic lamella sliding roof
• Windshield wiper startup suppression
• OFF delay function of interior lights
• Inside rearview mirror dimming function
Note
The special functions are not necessarily controlled by the overhead control panel, they may just be indirectly associated with the overhead control panel.
Switching consumers
• Inside rearview mirror unit
• Roof motor
• Rear dome lamp
Voltage supply
• Inside rearview mirror unit
• Rain/light sensor
• Rear reading lamps
Reading integrated switches
• Roof switch
• Dome lamp ON and OFF switch
• Door contact ON and OFF switch
• Rear dome lamp switch
• Left front reading lamp switch
• Right front reading lamp switch
Reading sensors
• Rain/light sensor
Interface to CAN-B (via DBE)
• Rain/light sensor
The overhead control panel control unit is a CAN-B subscriber in the overall network.
Rear dome lamp switch (1)
Pressing the rear dome lamp switch (1) switches the interior illumination in the rear on or off.
Door contact ON and OFF switch (2)
Pressing the door contact ON and OFF switch (2) activates the automatic control for the interior illumination.
The interior illumination is automatically switched on when
• The vehicle is unlocked
• A door is opened
• The transmitter key is removed from the ignition lock
The interior illumination switches back off after a delay.
Pressing the door contact ON and OFF switch (2) again switches off the automatic control for the interior illumination.
Dome lamp ON and OFF switch (3)
Front dome lamp (4)
Pressing the dome lamp ON and OFF switch (3) only switches the front interior illumination (4) in the overhead control panel on or off.
Roof switch (5)
Panoramic lamella sliding roof
Circuit 15R must be switched on to actuate the panoramic lamella sliding roof.
Pulling the roof switch (5) towards the rear and holding it there opens the panoramic lamella sliding roof to the vent position.
In the vent position, only the foremost lamella of the panoramic lamella sliding roof is raised at the rear.
Pulling the roof switch (5) towards the rear again and holding it there opens the panoramic lamella sliding roof for the duration of the actuation.
The panoramic lamella sliding roof is always closed by pressing the roof switch (5) to the front and holding it there until the roof is fully closed.
Left front reading lamp switch (6)
Left front reading lamp (7)
Pressing the left front reading lamp switch (6) switches the left front reading lamp (7) in the overhead control panel on or off.
Right front reading lamp switch (8)
Right front reading lamp (9)
Pressing the right front reading lamp switch (8) switches the right front reading lamp (9) in the overhead control panel on or off.
Notes
• The cover of the panoramic lamella sliding roof protects against solar radiation and can be operated by hand regardless of the position of the lamella roof.
• The panoramic lamella sliding roof does not have an automatic function.

· Panoramic lamella sliding roof OPEN/CLOSED
· 7 Rain detected
· 8 Darkness detected
· 10 Reverse gear engaged or interior lights switched on
· 13 Rear dome lamp ON/OFF
· 17 Power supply to rain/light sensor
· 21 Power supply to rear reading lamps
· 26 Power supply to inside rearview mirror unit
· A67 Inside rearview mirror unit
· B38/2 Rain/light sensor
· E11/1 Left rear reading lamp
· E11/2 Right rear reading lamp
· E15/3 Rear dome lamp
· M12/2 Roof motor
· N70 Overhead control panel control unit
· CAN-B Controller Area Network bus class B (interior compartment)

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