four wheel drive BMW 645CI COUPE&CONVERTIBLE 2004 Owners Manual

Adjustments
48
Mirrors
Adjusting exterior mirrors
Armrest in the driver's door:
14-way adjustment
2Switching to the other mirror or auto-
matic curb monitor, refer to page 45
To prevent the exterior mirrors from
being damaged due to the width of
the vehicle, always fold them in by hand
before entering an automatic car wash.<
You can also adjust the mirrors manually
if necessary by pressing against the outer
edges of their lenses.
Storing the mirror positions, refer to Seat,
mirror and steering wheel memory,
page 44.
The mirror on the passenger's side
features a lens with a more convex
surface than the mirror installed on the
driver's side. When estimating the distance
between yourself and other traffic, bear in
mind that the objects reflected in the mirror
are closer than they appear. This means
that estimations of the distance to following
traffic should not be regarded as precise.<
Automatic functions
>Both exterior mirrors are automatically
heated in ignition key position 2
>The interior and exterior mirrors dim
depending on the light occurring when
the vehicle is being driven forward
*.There are two photocells in the interior
mirror to control the automatic dimming
of the interior mirror. One is integrated
within the mirror's lens, refer to arrow,
while the other is located at an offset
position on the rear of the mirror hous-
ing.
For trouble-free operation, keep the
photocells clean and do not cover the
area between the interior rearview mir-
ror and the windshield. Do not attach
any kind of stickers on the windshield in
front of the mirror, either.
Steering wheel adjustment
Do not adjust the steering wheel while
the vehicle is moving. There is a risk
of accident from unexpected movement.<
The steering wheel can be adjusted in four
directions.
Storing the steering-wheel position, refer
to Seat, mirror and steering wheel memory,
page 44.

Controls
79Reference
At a glance
Driving tips
Communications
Navigation
Entertainment
Mobility
have dropped below the minimum, possi-
bly owing to a leak in the hydraulic system.
Do not continue driving. Contact your BMW
center.<
Flat Tire Monitor
The concept
The Flat Tire Monitor keeps track of the
inflation pressures in the four tires as you
drive. The system provides an alert when-
ever the inflation pressure drops signifi-
cantly in relation to the pressure in another
tire.
The check of the tire inflation pressure is
based on monitoring the relative speeds
of the wheels. A flat tire is detected and
reported on the basis of a deviation in cer-
tain speed ratios.
Functional requirement
To ensure reliable operation, the system
should have been initialized with the cor-
rect tire inflation pressure.
System limits
The Flat Tire Monitor cannot indicate
sudden severe tire damage caused
by outside factors and does not detect a
natural, even pressure drop in all four
tires.<
In the following situations, the system
could be delayed or malfunction:
>When you are driving on snow-covered
or slippery road surfaces
>In the case of performance-oriented
driving: slip on the drive wheels, high
lateral acceleration
>False alarms and undetected loss of
pressure may occur when you are driv-
ing with snow chains fitted
>If the Flat Tire Monitor was not initial-
ized after the last inflation pressure cor-
rection, false alarms indicating a flat tire
that is not present are possible or pres-
sure loss might not be detected.
Initializing system
Perform the initialization immediately
after correcting the inflation pressure,
after changing a tire or changing a wheel or
all wheels. A drive is necessary for this pur-
pose.<
Control Center, for principle details, refer to
page 16:
1.Start the engine, but do not drive off
2.Open the menu
3.Select "Vehicle settings" and press the
controller
4.Select "FTM" and press the controller
5.Select "Set tire pressure" and press the
controller
6.Select "Yes" and press the controller
7.Drive off.
The message "Initializing" is displayed.
It takes a few minutes before the Flat Tire
Monitor can detect and report a flat tire and
"Status: Active" is displayed.
If a flat tire is detected during initialization,
a message appears on the Control Display.
When driving with snow chains, do
not initialize the system.<