5 Series E60 530d (M57TU) SAL
The lens heating is activated by the ACC sensor. The heating is controlled via a pulse-width modulated signal
(PWM signal). The heating coil is integrated into the lens of the ACC sensor
The lens heating is only activated within a certain ambient temperature range (approx. +5
°
C to -5
°
C).
Reason: Only at temperatures around zero is snow wet or moist. At temperatures well below this, snow will be
dry. To prevent snow from thawing on the lens and creating an artificial coating, the heating is switched off below
a certain ambient temperature. The current ambient temperature value is transmitted by the instrument cluster.
•
Conditions for activation
-
Engine ON
-
ACC ON
-
Ambient temperature between -5
°
C and +5
°
C
•
Safety cutout
-
Temperature in ACC sensor over 50
°
C
(measured by interior temperature sensor in ACC sensor control unit)
-
Voltage greater than 16 volts
The safety cutout shuts down the lens heating. The Active Cruise Control option remains activated. (No
fault memory entry)
•
Monitoring
The lens heating is monitored for open and short circuits in the heating coil.
If the monitoring reports a fault, the Active Cruise Control option will be shut down. (Fault memory entry)
Low-voltage cutout and high-voltage protection for ACC sensor
The ACC sensor works with a supply voltage of 9 to 16 volts.
•
Low-voltage cutout
If the on-board supply voltage drops below about 9 volts, the ACC sensor will perform a low-voltage cutout
and a fault memory entry will be stored.
The ACC sensor will be reactivated when the on-board supply voltage exceeds 9.8 volts again.
•
Overvoltage protection
If the on-board supply voltage exceeds about 17.5 volts, the ACC sensor will perform a cutout with a fault
memory entry.
The ACC sensor will be reactivated when the on-board supply voltage drops below 17.0 volts again.
Self-diagnosis and compensation for minor horizontal adjustments
External forces may change the alignment of the ACC sensor. A horizontal change leads to function limitations.
(Function limitations encountered are, e.g.: reaction to vehicles in the next lane or late reaction to vehicles in
the same lane).
Self-diagnosis allows the ACC sensor to compensate for minor horizontal adjustments of up to 1
°
.
If a horizontal adjustment of more than 1
°
is detected, the Active Cruise Control option will be deactivated and a
fault will be stored in the fault memory. A check control message will be issued.
Influence on the dynamics in conjunction with a navigation system
If the Active Cruise Control is coupled with a navigation system, this may have an influence on the dynamics.
(Only possible in combination of CCC with the Professional navigation system option 609.)
Navigation systems provide additional information, such as the course of the road and the road category.
The road category is split up as follows:
SBT Active Cruise Control E60, E61, E63, E64, E65, E66
BMW AG - TIS
22.02.2013 10:59
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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