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To avoid inadvertant deployment of the anti-theft
alarm system the sensitivity of the interior motion
sensors is reduced whilst rain closing is being
carried out.
Deactivation conditions
The function is deactivated following:
- Successful execution of rain closing,
- "Ignition on" status detected,
- Expiry of the monitoring period.
Function
Once rain closing has been activated, the conveni-
ence system control unit transmits a corresponding
message to the onboard supply control unit. Once this
has detected that the ignition has been switched off,
it sets the rain and light detector sensor to monitoring
mode. This mode is set to 12 hours as default.
If the rain sensor detects precipitation, it informs the
onboard supply control unit via the LIN data bus;
in turn, the former informs the convenience control
unit via the CAN data bus. Via separate CAN messa-
ges, this issues the command "close windows" to the
door control units. In accordance with the EU
Directive, the window drives' excess force limitation
function is also retained in the case of rain closing.
The command for the sliding/tilting roof (STR) is trans-
mitted via a separate line from the convenience
control unit to the STR module.
Whilst the door control units confirm that the windows
have been closed, the STR drive does not provide the
convenience control unit with any feedback.
