How to Operate the Sunroof in My 1984 Mercedes Benz 300 SD

1. Place the key in the ignition and turn it to the second or third position. The first position is the accessory position, while the second position illuminates the glow plug indicator light. Turning the key to the third position actually starts the vehicle, but should be done only after the glow plugs have sufficiently warmed up and the indicator light is no longer illuminated.
2. Locate the sunroof's power switch. The sunroof switch is located in the center stack directly below the air vents and above the climate control buttons. The sunroof switch is the second button from the left and directly to the left of the hazard light switch.
3. Push and hold the top section of the sunroof switch to open the sunroof. Close the sunroof by pushing the bottom half of the sunroof switch. While you must hold down the switch to open it, closing the switch is done by merely pressing the switch. However, due to age you may have to still hold down the switch to fully close the sunroof; this indicates that the sunroof is not operating within factory specifications.