Mercedes-Benz 2008 R 320 CDI 4MATIC Operator's Manual page 257

Controls in detail
Panorama roof with power tilt/sliding panel*
Reinsert the fuse in the fuse box.
Switch on the ignition ( page 39).
Push and hold the roof panel switch in
direction of arrow 2 ( page 254)
until the roller sunblinds are fully
closed.
Keep holding the roof panel switch in
direction of arrow 2 ( page 254) for
approximately 1 second.
Pull and hold the roof panel switch in
direction of arrow 1 ( page 254)
until the roller sunblinds are fully
opened.
Keep holding the roof panel switch in
direction of arrow 1 ( page 254) for
approximately 1 second.
256
Press and hold the roof panel switch in
direction of arrow 3 ( page 254)
until the tilt/sliding panel is fully raised
at the rear.
Push and hold the roof panel switch in
direction of arrow 2 ( page 254)
until the tilt/sliding panel is fully
closed.
Keep holding the roof panel switch in
direction of arrow 2 ( page 254) for
approximately 1 second.
Open the tilt/sliding panel using the
Express-open feature ( page 255).
If the tilt/sliding panel opens
completely, the roof is synchronized.
If the tilt/sliding sunroof does not open
completely:
Repeat the above steps.