Quote:
Originally Posted by compress ignite
I am/did not imply that sunroof "Service" is part of ANY normal
"Scheduled Maintenance" schema promoted by ANY Franchised dealer.
You'd have to request it,specifically!
What I did say is that IF Sunroof Maintenance had been performed, y'all
would know BECAUSE the Stealerships charge so much for it.
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Wunnerful,that your chassis has been provided such excellent protection
from the elements.
THAT still doesn't negate the need for proper cleaning and lubrication of the
Sunroof.
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Can you please show us the section of the Mercedes FSM that requires a
"ReSync" of the Sunroof after each "Power Down" of the electrical supply.
(AKA Battery source removal from the chassis's electrical system)
I do not believe this is a necessary step,after Battery removal !
There are no Memory Capable/Microchip/Computerized Functional Parts in
the Sunroof.
The ONLY "Synch-ing" possible is a function of the Mechanical Clutch VS
the On/Off micros-switches in the Drive Motor.
AND to them Battery Removal appears the same as KOEO
(Key Out,Engine Off)
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He has a CAN bus car. The ECU is able to start and stop the drive motor via the relay. The purpose of syncronizing is to send a signal to stop the motor when the sunroof is fully closed thus protecting the motor. This also applies to the windows express feature as well as the power seats and head restraints.
Here is a section from Pg. 78 W210 Owners Manual (probably different page for W211 OM) -
"Synchronizing PowerWindows
If the power supply was interrupted
(battery disconnected or empty), the
windows cannot be opened or closed by
the Express feature.
To resynchronize the Express feature,
press side of power windowswitch
until thewindowis completely closed and
hold for additional 2 seconds. Repeat
procedure for each window.
The automatic full opening and closing
procedure of the windows should now be
restored."
There is similar information in the manual for the Sunroof and Seats.
I agree it is a good idea to lube the sunroof rails with correct MB lube periodically. Especially if you live in a dusty area or are given to opening the sunroof when it is cold out.