3 Series E91 330xi (N52) TOUR
Cruise control is a comfort system. Adjustments by the driver will always have a higher priority
(= importance) than cruise control.
The driver should decide whether (and how) the system is used based on road and traffic conditions and
visibility.
With the start of series production of the E90, longitudinal dynamics management (LDM) will also be introduced.
Longitudinal dynamics management consists of various function blocks (e.g.: Cruise control with brake function or
Active Cruise Control option). These function blocks are grouped together into a control unit by the corresponding
software. The control unit is called the LDM control unit.
The LDM control unit evaluates all relevant data for cruise control. (e.g.: The ACC sensor sends the information
"Vehicle monitored". This information is evaluated in the LDM control unit).
>
E92 from 06/2006 and
E90, E91 from 09/2006 and
E93 from 12/2006
The LDM control unit is no longer fitted on vehicles with option 544 "Cruise control with brake function".
Because of a software modification in the DSC control unit (DSC Mk60E5), the DSC control unit assumes
control of the functions of the LDM control unit.
In this SI Technology (SBT) bulletin, only longitudinal dynamic management and thus the Cruise control with brake
function or Active Cruise Control option is described.
[System overview ...]
Longitudinal dynamics management is available in connection with the following option (special equipment):
-
Option 541 "Active Cruise Control"
or
-
Option 544 "Cruise control with brake function"
>
E92 from 06/2006 and
E90, E91 from 09/2006 and
E93 from 12/2006
The LDM control unit is no longer fitted on vehicles with option 544 "Cruise control with brake function".
Because of a software modification in the DSC control unit (DSC Mk60E5), the DSC control unit assumes
control of the functions of the LDM control unit.
Option 541 "Active Cruise Control"
The 2nd generation Active Cruise Control option will be used for the first time with the E63/E64 from 09/2004.
Active Cruise Control is a comfortable spacing and cruise control.
The distance from the vehicle ahead can be selected from 4 fixed timed separations. (EURO version: 1.0 - 1.5 -
2.0 - 2.5 seconds)
This means that the as speed changes, so does the distance to the vehicle ahead.
The legally prescribed minimum distance is not undershot when control is active.
Differences between option "Active Cruise Control" on E90, E91, E92, E93 and option "Active Cruise Control" on
E60, E61, E63, E64, E65, E66:
•
On the E90, E91, E92 (including all-wheel drive) and E93, the data for the longitudinal dynamic
management are evaluated in the LDM control unit.
•
On the E60, E61, E63, E64, E65, E66, the data for the longitudinal dynamic management are evaluated in
the ACC control unit (i.e.: there is no LDM control unit fitted).
[for further information, please refer to SI Technology (SBT) 66 01 04 067]
Option 544 "Cruise control with brake function"
Differences between "cruise control with brake function" and "cruise control":
•
Constant roadspeed, even downhill:
SBT Cruise control E90, E91, E92, E93
BMW AG - TIS
22.02.2013 02:12
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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