CF5 Sunroof Unique Features - keywords glass headliner leak molding motor noise rattle roof seal sun switch trim water

This PI was superseded to update model years. Please discard PIT3369D.

The following diagnosis might be helpful if the vehicle exhibits the symptom(s) described in this PI.

The following information pertains to CF5 Sunroof option unique features and information about Webasto technical assistance.

The CF5 sunroof is manufactured by Webasto. It is an electric sliding glass type unit. When opening, the glass moves rearward and slides above the roof. One unique aspect of this vehicle is that the sunroof is upfitted after the vehicle is fully assembled. This includes the cutting of the roof panel and headliner. The power is supplied by fuse #80 in the UBEC and the ground is a direct connection to G303 in the roof panel. Fuse #80 supplies power to circuit 343 (yellow wire) which is part of the factory harness to the A-pillar. At the A-pillar, there is a connection to circuit 43 (red wire) to the sunroof. Refer to SI document 1478091 for the power sunroof schematic. Removing the A-pillar trim will allow access to the connection between the red wire circuit 43 from the sunroof and the yellow wire circuit 343 from the UBEC. Another aspect unique to this vehicle, is that the sunroof assembly does not utilize any water management drain hoses. This roof is sealed to prevent water from traveling past the glass panel seal. Every vehicle equipped with a CF5 option is water tested at the upfitter prior to shipment. If a water leak is noticed in the vehicle, begin water testing the vehicle starting at the bottom of the body and moving upwards to the roof area. To eliminate the sunroof as the source of the leak, use two-inch wide masking tape to cover the entire perimeter of the sunroof. Please refer to bulletin 07-08-67-001 for additional information.

Note: For questions or concerns on this roof, contatct Webasto's aftermarket support center @ 810-593-6000.

Please follow this diagnostic or repair process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed.