BMW 2007 750i Sedan Manuel Du Propriétaire

Page de 254
 123
Hydroplaning
When driving on wet or slushy roads, 
reduce road speed. If you do not, a wedge 
of water can form between tires and road sur-
face. This phenomenon is referred to as hydro-
planing, and is characterized by a partial or 
complete loss of contact between tires and 
road surface, ultimately undermining your abil-
ity to steer and brake the vehicle.
<
Driving through water
Only drive through water with a maximum 
depth of 1 ft/30 cm and then, at no more 
than walking speed. Otherwise, you run the risk 
of damaging the vehicle's engine, electrical sys-
tems, and transmission.
<
Safe braking
Your BMW is equipped with ABS as standard 
equipment. In situations that require it, it is best 
to apply the brakes fully. Since the vehicle 
maintains steering responsiveness, you can 
nevertheless avoid possible obstacles with a 
minimum of steering effort.
Pulsation at the brake pedal combines with 
sounds from the hydraulic circuits to indicate to 
the driver that ABS is in its active mode.
Driving in wet conditions
When driving in wet conditions and in heavy 
rain, it is a good idea to apply light pressure to 
the brake pedal every few miles. Monitor traffic 
conditions to ensure that this maneuver does 
not endanger other road users. The heat gener-
ated helps dry the pads and rotors to ensure 
that full braking efficiency will then be available 
when you need it.
Hills
To prevent overheating and reduced effi-
ciency of the brake system, drive long or 
steep downhill grades in the gear that requires 
the least amount of braking. Otherwise, even 
light but consistent pedal pressure can lead to 
high temperatures, brake wear, and possibly 
even failure of the brake system.
<
You can further enhance the engine's braking 
action by selecting a lower gear in the automatic 
transmission's manual mode, downshifting as 
far as first gear on extremely steep stretches, 
refer to page
. This strategy helps you avoid 
placing excessive loads on the brake system.
Do not drive in idle or with the engine 
switched off; otherwise, there will be no 
engine braking action or power-assist for the 
brakes and steering. 
Never allow floor mats, carpets or any other 
objects to protrude into the area of movement 
of the pedals and impair their operation.
<
Corrosion on brake rotors
When the vehicle is driven only occasionally, 
during extended periods when the vehicle is not 
used at all, and in operating conditions where 
brake applications are less frequent, there is an 
increased tendency for corrosion to form on 
rotors, while contaminants accumulate on the 
brake pads. This occurs because the minimal 
pressure that must be exerted by the pads dur-
ing brake applications to clean the rotors is not 
reached.
Should corrosion form on the brake rotors, the 
brakes will tend to respond with a pulsating 
effect that even extended application will fail to 
cure.
When vehicle is parked
Condensation forms in the automatic climate 
control during operation, and then exits under 
the vehicle. Traces of condensed water under 
the vehicle are therefore normal.
Before driving into a car wash
1.
Fold in the exterior mirrors, refer to page
otherwise, they could be damaged due to 
the width of the vehicle. 
To permit the vehicle to roll, follow the 
instructions on page
2.
Release the parking brake, especially when 
you have activated Automatic Hold. Refer to 
page
.
Online Edition for Part no. 01 41 0 013 316 - © 02/07 BMW AG