Installing display instrument - AZ54.65-P-0001-05TT

Place backing plate (20) in the center of the prestamped recess at the rear of the headliner from above, mark the internal dimensions and cut out carefully.

Fig 1: Identifying Backing Plate Dimensions
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Place backing plate (20) on the cutout from above. Clip bracket (21) into backing plate (20) from below.

Fig 2: Identifying Backing Plate And Bracket
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Push rear PTS warning display (A44/3) into bracket (21) from below with the connecting coupling pointing to the left, and lock by pushing towards the left side.

Fig 3: Pushing And Locking Rear PTS Warning Display Into Bracket
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Connect warning element wiring harness (22) and attach to headliner with adhesive felt tape as shown in the diagram.
Shown on sedan

Fig 4: Identifying Warning Element Wiring Harness, Backing Plate And Rear PTS Warning Display
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Route warning element wiring harness (22) along existing cables on left side of headliner and fasten.
After installing the headliner, the cables should be routed to the left C-pillar along existing cables.

Fig 5: Routing Warning Element Wiring Harness
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Route warning element wiring harness (22) with overhead control panel and frame floor system connector (X25/8) to the side wall beside the left rear door.

Fig 6: Identifying Warning Element Wiring Harness, Frame Floor System Connector And Parking Assist Wiring Harness
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.