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Smartbeam (HBSM)
HBSM (High Beam Select Module) includes the
“smartbeam” functionality that automates the task of
switching between high and low beam headlamp
functions in response of detecting light sources, for
instance the presence or absence of oncoming and
preceding vehicles.
Detection is performed by a forward looking camera
located in the inside rear view mirror.
Detection range > 400 meters.
The system only operates in “night” ambient light
conditions and is functional when the main lighting
switch is AUTO position.
High beams turn on when vehicle speed is above 40
km/h.
For systems that have a Bi‐Xenon headlamp, the BCM
will control the activation/deactivation of the high
beams based on requests from the HBSM.
Inputs
Light source detection
(HBSM)
Main Light Switch
Flash to Pass / High beam
select stalk
Smartbeam
Automatic
High Beam
Control
Outputs
Smartbeam telltale
(BCM)
High Beam
activation / deactivation
Vehicle speed
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Activation/Deactivation of Smartbeam function
Presuming the ambient light condition is “night” and the Main Light Switch is in AUTO position, the
Smartbeam functionality is activated when the ignition is turned to RUN.
The driver can deactivate the system manually by activating high beam via high beam stalk. It can be
reactivated by pushing the high beam switch twice within two seconds.
Activation of either front or rear fog lamps also deactivates the Smartbeam.
The following conditions turn off the high beam:
oncoming traffic detection
preceding traffic detection
village detection
ambient light level too high (E.g. due to towns or twilight situations)
vehicle speed < 22km/h
If the system detects fog or snow conditions, the smartbeam functionality is deactivated for 2
minutes. (No automatic high beam activation)
Smartbeam remembers its state (auto or manual) over ignition cycles.
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Flowchart
Main Lighting Status
AUTO
no
yes
HBSM active,
High beam requested?
BSS
2 times
within 2s
Low beam active
FTP
release
FTP
press
BSS
High beam active
BSS
High beam active,
HBSM deactivated
Low beam active
FTP
press
FTP
release
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FTP
press
High beam active,
HBSM deactived
BSS
active again
after 2s
FTP
press
Flash-To-Pass active
High beam active
FTP
release
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Smartbeam Telltale
The status of HBSM is shown by a green telltale in the IPC. If Smartbeam is active, the telltale
will be switched on continuously. If the driver deactivates the system, the telltale will switch
off.
Tourist mode
The tourist mode functionality switches the headlamps into a non dazzling mode, if the traffic
regulation moves from Left Hand Traffic (LHT) to Right Hand Traffic (RHT) and vice versa.
Please see the description of AFL for further information on how to activate tourist mode.
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Connectors and pin assignment HBSM
1
2
3
4
5
6
7
8
9
10
x51
2514
2515
2516
2517
1691
1690
GMLAN In
Ground
Reserved for OnStar Keypad Out
Reserved for OnStar Keypad Power
GMLAN Out
Reserved for OnStar Enabled (Green
LED)
Reserved for OnStar Fault (Red LED)
OEC (‐)
OEC (+)
Battery
0,35
0,35
0,35
0,35
0,35
0,35
0,35
0,35
0,35
0,35
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Pigtail Wire Color
Pigtail Wire Gauge
Terminal Plating
Shield Group
Twist Group & Rate
Circuit Description
Max. Wire Resistance
Minimum Wire Gauge
Circuit #
Cavity
X1
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HVSM + MSM (Heated/Ventilated Seat Module and Memory Seat
Module)
The driver and passenger seat can be equipped with several features:
• memory function
• heating
• ventilation
•
These features are implemented by the Heated/Ventilated Seat Module and the Memory
Seat Module. This chapter explains how the features work and which module will be
assembled in order to fulfill customer’s requests.
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Block diagram HVSM
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Block diagram MSM
Battery
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Functional description HVSM + MSM
Depending on requested options, different modules
will be assembled. Both HVSM and MSM may provide
seat heating and ventilation but only the MSM
provides Memory functionality. The decision process
to determine which module is assembled is shown in
the picture on the right. The modules are mutually
exclusive, so either a MSM or a HVSM will be
assembled.
Memory?
yes
Heated?
no
Heated?
no
no
yes
yes
Ventilated?
Ventilated?
no
yes
no
yes
If a memory function is not desired, HVSM will be
MSM
HVSM
assembled. It provides both heat and ventilation
functionality. The customer can choose between either heated or heated + ventilated seats.
If a memory function shall be available, MSM has to be assembled. It has the same
functions as HVSM and in addition MSM provides a memory function. So the available
options are
• only memory function
• memory function + heated seats
• memory function + heated + ventilated seats
Heating and the memory function are available for all types of seats, but ventilation will
only be allowed in perforated leather seats. Again, ventilation will only be available for the
driver’s seat.
Heating and Ventilation
The seats can be equipped with heating modules and a ventilator. The driver activates
these devices with corresponding buttons on the HVAC faceplate. There are 3 activation
steps for every function. Activated heating excludes ventilation and vice versa.
Memory function
The seats and mirrors are movable electrically. Memory function allows to save the actual
seat and mirror position. By request, these settings can be restored. Therefore, switches are
located at the seat.
On “Ignition Off”, the actual seat and mirror position are saved.
Driver Easy Exit *
On “Ignition Off”, the seat will move back for 8cm when the door is opened.
Comfort Closing (Mirror Folding) *
Mirrors will fold if the “comfort close” button is pressed on the remote key.
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Parking Tilt Mirrors *
When the transmission goes into reverse gear, the mirrors will tilt down. Therefore, the driver
has a better look on the curb. If reverse gear is left, the mirrors go back into “normal”
position.
Memory Remote Unlock Recall *
If the doors are unlocked via remote key, the seats move back into the position that was
saved on “Ignition Off”. MSM will save different positions for every key.
Memory recall via remote will happen when the driver door is unlocked and open but not
later than 2 minutes after unlock.
* These functions can be switched on/off via customization.
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