2005 BMW 645CI COUPE&CONVERTIBLE wiring

Controls
87Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
Do not apply adhesive materials to the
cover panels of the airbags, cover them or
modify them in any other way.
Do not attempt to remove the airbag retention
system from the vehicle. Never modify or
tamper with either the wiring or the individual
components in the airbag system. This cate-
gory includes the upholstery in the center of the
steering wheel, on the instrument panel, the
side trim panels on the doors and on the Coupe,
the roof pillars along with the sides of the head-
liner. Do not attempt to remove or dismantle the
steering wheel.
Do not touch the individual components
directly after the system has been triggered,
because there is a danger of burns.
If you note any indication of system malfunc-
tion, if you wish to have an airbag deactivated,
or if the airbag retention system is triggered in
response to an accident, you should always
entrust all inspection, repair and dismantling
operations to your BMW center. Unprofessional
attempts to service the system could lead to
failure in an emergency or undesired airbag
activation, either of which could result in per-
sonal injury.<
Airbag warning information is also provided on
the sun visors.
Operational readiness of airbag system
From ignition key position 1 the warning lamp
lights up briefly, indicating the operational
readiness of the entire airbag system and the
belt tensioners.
Airbag system malfunction
>The warning lamp does not light up as of
ignition key position 1.>The warning lamp lights up continuously.
Have the airbag system checked immedi-
ately if a malfunction occurs, as otherwise
there is a danger of the system not responding
in the expected manner to an impact occurring
within its normal response range.<
Convertible:
Rollover protection system
The rollover protection system is automatically
activated in the event of an accident or a critical
driving situation, extreme inclination on the lon-
gitudinal or transverse axis, or loss of ground
contact. The rollover bars located behind the
rear head restraints are deployed within frac-
tions of a second.
As a supplement to the rollover bar integrated
into the windshield frame, the rollover protec-
tion system ensures that all vehicle occupants
have the necessary headroom.
Always keep the path of movement of the
rollover protection system clear.
In less severe accidents, you are protected by
the fastened safety belt and, depending on the
severity of the accident, the belt tensioner and
the multistage airbag restraint system.<
Lowering
If the protection function was not required after
automatic activation, the rollover protection
system can be lowered again. No tools are nec-
essary for this purpose.
1.Press the release backward and hold in that
position.

Technology for comfort, convenience and safety
88 2.Press the rollover protection unit halfway
down from above.
3.Let go of the release.
4.Press the rollover protection unit down until
it snaps into place.
5.Use the same procedure for the second roll-
over protection unit.
Have the rollover protection system checked
after unexpected triggering.
Never move the convertible top when the
rollover protection system is raised.
No changes of any nature may be made to the
individual components of the rollover protec-
tion system and wiring.
Work on the rollover protection system may
only be performed at a BMW center. Unprofes-
sional attempts to service the system can lead
to failure or malfunction.
For a system check and to ensure long-term
functioning, you must comply with the mainte-
nance intervals of the service requirement dis-
play.<
Head-Up Display*
The concept
With the Head-Up Display important informa-
tion is projected into the driver's field of view,
e.g. navigation instructions. This enables you to
take in this information without looking away
from the road.
Switching on/off
Ignition key in position 2:
Press the button to activate or deactivate this
system.
1Navigation instructions
2Display
>Cruise control
>Active cruise control
3Speed

Replacing components
184
Power failure
Following a temporary interruption of the power
supply, the operation of some equipment is lim-
ited and must be reinitialized. Individual settings
are also lost and have to be updated:
>Active steering
The system is deactivated and has to be ini-
tialized, refer to page86. Until then, the
steering will react in an unaccustomed
manner.
>Seat, mirror and steering wheel memory
The position must be stored again, refer to
page46.
>Time and date
The settings must be updated, refer to
page78.
>Radio
Radio stations have to be stored again, refer
to page138.
>Navigation system
You must wait until it becomes operational
again, refer to page129.
Fuses
Never attempt to repair a blown fuse, and
do not replace a defective fuse with a sub-
stitute of another color or amperage rating, as
this could lead to overloading of the wiring, ulti-
mately resulting in a fire in the vehicle.<
Spare fuses and a pair of plastic tweezers are
located in the compartment for the onboard tool
kit, refer to page180.
Information on fuse allocation is located below
the bracket for the onboard tool kit, see below.
In glove compartment
1.Press the button on the back in the center of
partition1 and pull out the partition upward,
arrow2.
2.Press the coupling downward, arrow3, and
fold the lid 4 forward.
In luggage compartment
Fold up the cover under the floor mat and
remove the bracket for the onboard tool kit.
Information on fuse allocation1 and additional
fuses2 are provided there.