fuel BMW X5 2006 E53 Central Body Electronics Workshop Manual

ZKE - 4
POWER DISTRIBUTION
The X5 utilizes a single high amperage fused
power distribution center located to the left EHC
air reservoir beneath the cargo area floor.
The main fuse box is located inside the glove
box above a hinged panel. This places the
power distribution close to the main electronics
carrier behind the glove box.
The glove box mounted fuse box includes fuses
1 - 64.
Mounted on the top surface of the fuse panel are
the following relays:
FUEL PUMP
HORN
HEATED STEERING WHEEL
VISUAL ENTRY AID RELAY MODULE(OPTIONAL - REFER TO 1999 MODEL UPDATE)
NOT SHOWN IN THIS PHOTO
This view shown through passenger side airbag opening in dash panel.

ZKE - 14
CENTRAL LOCKING
SYSTEM FEATURES:
• The Central Locking system controls the door locks, tailgate locks and Fuel Filler Flap
actuators.
• The familiar single/double locking strategy is maintained from previous systems with a
new style door lock mechanismcombined with dual actuator motors similar to that
of the E46 ZKE V system.
• The automatic locking feature activates the door lock actuators when a road speed
signal of 7.5 MPH is detected via the K-Bus. The factory default encoding of this
feature is off, but can be encoded on for individual users with the Key Memory function.
• The Driver’s door lock location is the only point outside of the vehicle where the key can
mechanically control the central locking system functions. The lock incorporates the
familiar overrunning lock cylinder that breaks away and freewheels if an attempt is made
to destroy the lock with a screwdriver, dent puller, etc.
• The selective unlocking feature is maintained. A single unlock request from the driver’s
door with the key or via the remote transmitter unlocks the driver’s door only. A second
unlock request unlocks the remaining doors and trunk. This feature can be modified
for individual users with the new Key Memory capabilities to activate all lock actuators
simultaneously.
• When unlocked, the X5 uppertailgate can be opened by:
- the tailgate button in the center console SZM,
- trunk release switch pad located above the license plate, or
- the trunk release button on an FZV key.
• With the upper tailgate open, the lower tailgate is then opened by depressing the switch
located along it’s top edge.
• GM and EWS 3.3 interface via the K bus to monitor double lock status and to initiate
double lock override. This feature allows the doors to be opened from the inside if an
accepted EWS key is switched on in the ignition when double locked.

ZKE - 18
ACTUATOR MOTOR CONTROL
There are two motors incorporated in each actuator that provide two separate functions:
•Single lock/unlock function. This motor controls the mechanical lock mechanism
when the central lock button is pressed to single lock the vehicle. The mechanism is
locked at this point but can by opened from the interior by pulling an interior door handle
twice or by pressing the central lock button again. When single lock function is
activated, the fuel filler flap actuator is not locked.
•Double lock/unlock function. This motor is activated only when the vehicle is locked
from the outside at the driver’s door lock with a key or when the GM receives a lock
request from the FZV system. In this case the double lock motor is activated
simultaneously with the single lock motor. The function of the double lock motor is to
mechanically offset an internal rod disabling it from unlocking the vehicle from the
interior. This prevents the doors from being unlocked by any means except from an
unlock request at the driver’s door, the FZV remote key or via central lock button.
• Continuous locking/unlocking will initiate a timed arrest of the locking system. The GM counts
each time the locks are actuated. After approximately 12 cycles, the timed arrest is active.
The timed arrest is deactivated one actuator cycle for every 8 seconds until the counter is
reset to 0. The timed arrest is overridden if a crash signal is received from the MRS III.

All door lock actuators and the fuel filler flap actuator are controlled directly by the GM via
four internal load relays. The drivers door lock actuator has a separate circuit for the
selective unlocking feature.
If this feature is disabled by key memory encoding, the driver’s door lock actuator selective
unlock circuit is activated simultaneously with the balance of the motors during unlock.
CONTROL DURING DOUBLE LOCK:
CONTROL DURING SINGLE LOCK:
SELECTIVE SINGLE LOCK
- CONTROL - SWITCHED POWER -
SINGLE LOCK CONTROL
- SWITCHED POWER -
GROUND
DOUBLE LOCK CONTROL
-SWITCHED POWER-
FUEL
FILLER
FLAP
LEFT
REAR
DOORRIGHT
REAR
DOORPASS.
DOORDRIVER’S
DOOR
SELECTIVE SINGLE UNLOCK
- SWITCHED GROUND -
SINGLE UNLOCK CONTROL
- SWITCHED GROUND -
UNLOCK CONTROL
- SWITCHED POWER -
DOUBLE LOCK CONTROL
-GROUND-
FUEL
FILLER
FLAP
LEFT
REAR
DOORRIGHT
REAR
DOORPASS.
DOORDRIVER’S
DOOR
SELECTIVE SINGLE LOCK
- CONTROL - SWITCHED POWER -
SINGLE LOCK CONTROL
- SWITCHED POWER -
GROUND
NOT ACTIVE
FUEL
FILLER
FLAP
LEFT
REAR
DOORRIGHT
REAR
DOORPASS.
DOORDRIVER’S
DOOR
ZKE - 19
CONTROL DURING SINGLE UNLOCK:

ZKE - 22
CENTRAL LOCKING BUTTON
The central lock button in the center console
provides a momentary ground input signal to the
GM.
• This input initiates a single lock for each door
and the trunk.
• The fuel filler flap remains unlocked for
refueling purposes.
• If a door is manually opened while centrally
locked, the remaining doors stay locked.
The opened door can be re-locked when closed by manually locking or pushing the central
button twice. This allows the locks of the remaining doors to be re-synchronized again.
As an additional safety feature, the central lock button input also unlocks a double locked
system. Pressing the button returns the system to central lock (single) position, allowing
the doors to be opened when the interior door handles are opened twice. This feature was
also added to other ZKE systems during the 1999 model year.
CRASH SIGNALLING
The Multiple Restraint System (MRS III) provides a switched signal to the GM in the event
of an accident. The signal is an output function of the MRS control module and becomes
active when MRS determines a crash has occurred.
When active, the GM unlocks the door lock actuators, switches on the interior lights and
signals the LCM III via the K bus to activate the hazard warning flashers.
Once the crash signal is active, the GM will not respond to lock requests from the system
until the ignition switch is cycled or a front door is opened.

MODEL YEAR 2000 FZV KEY
Visual Changes:
• New appearance with blue and white BMW roundel.
• New button arrangement (larger buttons) with sequential operation (enhanced operating
convenience)
• Rechargeable battery replaces replaceable batteries. Charged by EWS ring antenna.
• The key housing is encapsulated and can not be opened.
• The LED has been omitted.
• Key will be used in E46, E38 and E39 vehicles.
Features of the keyless entry system include:
• Up to 4 radio-control keys can be operated in conjunction with one vehicle.
• Locking/unlocking of doors, tailgate,
fuel filler lid.
• Selective unlocking of driver’s door (as
with key in lock)
• Arming/dis-arming of DWA alarm system
(if equipped).
• Remote unlocking of the tailgate only.
• Comfort opening of windows and
sunroof
• Interior lighting activation (search mode).
• Panic mode alarm activation..
• Automatic correction for up to 1000
erroneous activation signals.
• Low transmitter battery fault code
storage in the GM.
• An EEPROM is used to store the key
data.
• Keys delivered with a four color label
sheet containing four different colored
labels for each of the four possible FZV
keys.
ZKE - 24TAILGATE OPENS