Failures; Repair Advice For Mechanical Failures; Repair Advice For Electrical Failures - Webasto HOLLANDIA 700 - 40 Series Service Manual

1. FAILURES

1. FAILURES

1.1. REPAIR ADVICE FOR MECHANICAL FAILURES

PROBLEM
While closing the panel from the
tilt position, the panel begins to
slide rearward.
While closing the panel from the
fully opened position, the panel
begins to tilt under the roof skin.
Panel is misaligned side to side
Glass panel stopping
prematurely.
Sunshade fails to open when
glass panel is opened to tilt
position.

1.2. REPAIR ADVICE FOR ELECTRICAL FAILURES

PROBLEM
Operating of the sunroof is
possible, no auto-close, no
Soft-touch.
SCU makes clicking noise but ,
panel will not move.
SCU clicking in open position,
roof does not close while
continuously pressing button.
Panel is sliding too slowly. With
a 13.5 V power supply, the panel
should not take more than 7 sec.
to close from the fully opened
position.
POSSIBLE CAUSE
Blocking catch is broken.
Blocking catch is broken.
Timing of drive cables incorrect
Obstacle in mechanism or guide
rail.
Retraction mechanism broken
POSSIBLE CAUSE
Voltage-drop of power-supply.
(changing battery or bad battery)
Low Voltage of vehicle power
supply.
Low Voltage of vehicle power
supply.
1. Weak battery.
2. Misaligned panel creating
drag or friction.
3. Weak motor. Test as indicated
in 2.2.4
4. Dirty mechanism.
7
SOLUTION
Replace blocking catch, see 3.9
Replace blocking catch, see 3.9
Retime drive cables, see 3.4
Remove obstacle.
Replace retraction mechanism,
see 3.7.
SOLUTION
Check power-supply ,
Reset programmable preset
positions
Check power-supply/ battery
Briefly cut off power to sunroof.
(pull fuse) Reset programmable
positions.
1. Charge or replace.
2. Re-time drive cables, see 3.4
3. Replace motor, see 3.1
4. Clean and grease mechanism
or replace if necessary, see 3.8