General

Sunroof

Tools

Special tools, testers and auxiliary items required







- Hook for front end 3370

General Information
Sunroofs manufactured by "Webasto" and "Rockwell (Meritor)" are installed.

Sunroofs of both manufacturers cannot be distinguished regarding function/operation and when installed on vehicle have barely any outwardly visible characteristics to distinguish them.

However, there is a fundamentally strong difference of both sunroofs regarding construction and design, that there is a difference for most repair procedures between both sunroofs.

During replacement of a complete slide/tile sunroof, slide/tile sunroof can be replaced without noting manufacturer.

Always differentiate between both manufacturers of slide/tile sunroofs when performing repairs or servicing work and ordering replacement parts.

Function
Sunroof is opened and closed via rotary switch when ignition is switched on/tilted out and closed by pressing and pulling.

After switching off ignition, slide/tile sunroof can still be opened and closed as long until driver's or passenger's door is opened.

On rotary switch, there are markings for preset tilt positions of glass panel. However, any other intermediate tilt position can be selected by turning switch in clockwise direction.

In switch position -1- , opening of slide/tile sunroof in so called comfort position decreases driving wind noise which can occur at complete opening in switch position -2-.

Tilt-up/closing of sunroof is performed as long as switch is pressed/pulled or until respective end position of glass panel is reached.

Sunroof is equipped with a closing force limit in area of window. When an obstruction is met during closing sequence, roof opens again by itself.

As of calendar week 32. 1998, a new motor and rotary switch was introduced. For this change, glass panel is also tilted up and closed using rotary switch.

In addition, glass panel is closed by pressing rotary switch, as long as rotary switch remains pressed.

NOTE: Motor and switch can only be recognized on new replacement part numbers and must not be installed with older versions.

In addition, there is an emergency close function. If there are problems closing, sunroof can be forced closed by pressing preselector, which must be located in "Sunroof closed" position.

For emergency close function, closing force limit is deactivated.







Sunroof drive motor is protected against overheating via a running time limit. Protective mechanism activates after an uninterrupted operation of approx. two minutes. It can only be operated again after a cool-off phase.