key BMW X5 2002 E53 Central Body Electronics Owner's Manual

ZKE - 39
WINDOW ANTI-TRAP DETECTION
The window anti-trap detection feature is only active in the one touch and convenience
close modes of operation. If the window switch is pushed/pulled and held, the Anti-trap
feature will not function.
The rubber pressure guard located at the top
edge of each door frame consists of two contact
strips that close when subjected to pressure.
This provides anti-trap detection and signal
generation to the GM.
When the contact strip closes, the window
immediately (10ms) reverses direction as with
previous anti-trap systems. The contact strip
does not require that the anti-trap feature be
initialized prior to operation.
The pressure sensor finger guard has a
resistance of 3.0 KOhm and it is monitored for
open circuit. When pressed, the monitored
resistance changes to <1KOhm. Faults with the
anti-trap system require that the window switch
be held to close the window.
CONVENIENCE OPENING/CLOSING
The GM and Front Door Switchblock Modules provide the convenience open/close feature
providing control of the power windows (and sunroof) from outside the vehicle with the key
in the driver’s door lock. The FZV provides the same function for the opening only.
• The anti-trap feature is active during convenience closing from the driver’s door lock.
• The convenience open feature provides outside activation of the windows and sunroof
in the same manner.
• If the GM receives a request to operate convenience close or open for more than 110
seconds, the function is deactivated and a fault code is stored.
• The Car Memory Feature can activate and deactivate the Convenience Open Feature
from the FZV’s control.

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SHD SELF DIAGNOSIS
The SHD monitors its operation and stores fault codes if a defect is determined: The SHD
monitors the following conditions:
• SHD motor relays:The relays are checked for sticking contacts (plausibility) and non
functional contacts.
• Hall effect position sensors:The SHD must detect a pulse frequency from the hall
effect sensor(s) during operation.
• Sunroof Switch: The SHD monitors the signal plausibility of the coded signaling from
the sunroof switch.
SUNROOF FAULT RESPONSE CHARACTERISTICS
If a fault occurs with any of these functions, the SHD responds as follows:
• Overrides the end run detection.
• Switches the motor off if the relay contacts stick for more than 500 ms.
• Switches the motor off if pulses are not received.
EMERGENCY OPERATION OF SUNROOF
If the sunroof motor does not respond to the switch signals, the hex key in the trunk lid tool
kit is used to manually turn the motor shaft drive as on previous systems

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AUTOMATIC CONTROL FUNCTION
The GM provides 12 volts (linear application providing soft on feature) to the interior light-
ing circuit when the one of the following input signal statuses change:
• Door contact hall sensor active (door opened)
• An Unlock request from the driver's door key lock hall sensors are received. This only
occurs if the ignition switch is off.
• An Unlock request is from the FZV keyless entry system is received via the K bus. This
only occurs if the ignition switch is off as well.
• The ignition switch is switched off and the vehicle exterior lights (LCM III) have been on
for a minimum of 2 minutes prior. This information is provided to the GM via the K bus.
• Active crash signal from the MRS III control module.
• Lock button of FZV key is pressed with the vehicle is already locked (interior search
function).
The GM gradually reduces the full 12 volt power supply (linear reduction providing soft off)
until the lights are off when the following input signal statuses change:
• Immediately after the ignition switch is turned to KL R with the driver's door hall sensor
door contact closed.
• When the vehicle is locked (single or double) with the door contacts closed.
• When the vehicle door contacts are closed. The lights remain on for 20 seconds and
then go to soft off.
• After the interior search function is activated, the lights will automatically turn off (soft off)
after 8 seconds.
• After 16 minutes with a door contact active (open door) and the key off, the lights are
switched off (consumer cutoff function).
• The component activation function of the DIS also has the ability to switch the lights.
The Interior lighting output circuit of the GM is approximately 3.5 amps with all lights on.

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DWA ARMING/DISARMING
• The DWA is armed every time the vehicle is locked from the outside with the door lock
cylinder or FZV key.
• The LED in the rear view mirror flashes as an acknowledgment along with the exterior
lights and a momentary chirp from the siren.
• The GM monitors all required input signals for closed status (door closed, tailgate
closed, etc.) The inputs must be in a closed status for a minimum of 3 seconds for the
GM to include them as an activation component. If after 3 seconds any input signal not
in the closed status is excluded (this is acknowledged by the DWA LED) preventing false
alarm activation's.
• If the DWA is armed a second time within 10 seconds, the tilt sensor and interior pro-
tection sensor are also excluded as alarm activation components. This function is use-
ful if the vehicle is transported on a train or flat bed truck to prevent false alarm activa-
tion's.
• While armed the tailgate can be opened with out the alarm being triggered as follows:
- If opened with the tailgate remote button via the FZV, the GM prevents the alarm
from activating. (This feature is customizable under the Car Memory function).
- If opened with the key at the tailgate lock cylinder the tailgate key position switch
signals the GM and in the same manner prevents the alarm from activating.
In either case, when the tailgate is returned to the closed position, it is no longer con-
sidered as an activation signal.
Panic Mode Operation: When the tailgate button is pressed and held, the GM is signaled
to activate the siren for the Panic Mode. The panic mode will function with either an armed
or disarmed DWA system.
EMERGENCY DISARMING
Emergency disarming occurs automatically if a key is used to turn the ignition switch on and
the EWS III accepts it. The EWS III signals the GM to unlock the doors and deactivate the
DWA.

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DRIVER’S SEAT MEMORY (CAR Memory Influence)
The PM-SM can be encoded to recall a specific seat position for a vehicle user when the
GM signals the SM to automatically recall stored positions separate of the 1-2-3 button
selections.
This feature is encoded through the car memory function and activated by the key memo-
ry function. The PM-SM will monitor the seat position and store it in another area of it's
memory when the vehicle is locked with the remote keyless entry system. The GM sends
a request to memorize the seat position and store it for FZV key user 1,2,3 or 4.
If another user of the vehicle changes the seat position the PM-SM restores the memory
position the next time the specific key is used to unlock the vehicle.
This feature can be further modified to activate the position recall based on the owner's
selected activation scenario, for example: The owner can choose to :
• Disable this feature,
• Initiate memory recall when the unlock signal is initially sent before a door is opened.
• Initiate memory recall when the unlock signal is sent but only when the driver's door is
opened.
See Car Memory Key Memory for additional information.
POWER SEAT DIAGNOSIS
The PM-SM communicates with the DIS or MoDiC via the K bus - instrument cluster gate-
way - to the P-bus. The PM-SM monitors the seat motors and circuits as well as it's inter-
nal operation. Any detected faults are stored in the PM-SM fault memory and are called up
when diagnosing the system with the Fault Symptom diagnostic plan.
The PM-SM also provides status display to the DIS of its input and output control signals
as well as component activation.

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SLEEP MODE
To lower the constant battery draw when the vehicle is parked, The complete ZKE system
will go into the “Sleep Mode” 16 minutes after the ignition has been switched off and no
further ZKE function is active.
Approximate X5 Battery draw: • Ignition switch off = approx 750 mA.
• One minute after = approx. 560 mA.
• After 16 minutes (sleep mode) = approx. 18 mA.
All modules in the ZKE system will go into the sleep mode. The P-Bus remains active, how-
ever no data transfer takes place until a wake-up request is received. The general module,
door modules or keyless remote module can wake the system up and put the ZKE back
on line. The K-Bus is not active in the sleep mode, however the GM III of Remote Entry
Module can put the K-Bus back on-line with a wake-up request.
SLEEP MODE CRITERIA: KL R, 15 OFF and no further function activated for 16 minutes.
WAKE UP CRITERIA: KL R or 15 “ON” or a change in one of the signal states listed below.
SIGNAL ACTIVITY ORIGINATING
MODULE
K-BUS High General Module
Door jamb switches (possibility of 4) Low “
Trunk lid lock cylinder microswitch High “
Trunk lid pushbutton microswitch Low “
Interior Trunk lid pushbutton microswitch Low “
Central locking button Low “
Hood microswitch Low “
Trunk Lid microswitch Low “
Interior light switch Low “
FIS sensor Low “
Tilt Alarm sensor Low “
FBZV operational signal High FBZV Module
Driver’s door lock microswitch - (lock) High PM-FT/SB
““““ - (unlock) High “
Passenger door lock microswitch - (lock) High PM-BT
““““ - (unlock) High “
Tailgate
Tailgate
Tailgate
Tailgate
UIS