Active Steering - BMW 318i Owner's Handbook Manual

equipment by design, do not continue driv-
ing. Any attempt to drive on after a puncture
can result in a severe
2. Check the pressures in all four tyres at the
next opportunity.
If all four tyres are inflated to the cor-
rect pressures, the Run Flat Indicator
might not have been initialised. In this case
initialise the system.<
3. If a tyre is completely deflated, you can esti-
mate how far you will be able to drive using
the following guidelines:
> With low loads:
1 to 2 persons without luggage:
Approx. 250 km, approx. 150 miles
> With moderate loads:
2 persons, luggage area full, or 4 per-
sons without luggage:
Approx. 150 km, approx. 90 miles
>
With a full load or while towing a trailer:
4 or more persons, luggage area full:
Approx. 50 km, approx. 30 miles
Drive with caution and do not exceed
80 km/h or 50 mph. If there is a loss of tyre
pressure, the vehicle's handling properties will
change. These include reduced track stability
during braking, longer braking distances and
altered self-steering properties.
If unusual vibration or loud noises occur during
the journey, this may be an indication that the
damaged tyre has finally failed. Reduce your
speed and pull over to a suitable location as
soon as possible. Otherwise, parts of the tyre
may come loose, which could result in an acci-
dent. Do not drive the car any further; contact
BMW Service instead.<
Malfunction
The indicator light shows yellow. The
Run Flat Indicator is malfunctioning
or has failed. Have the system
checked as soon as possible.
Online Edition for Part no. 01 41 0 013 257 - © 02/07 BMW AG
accident.<

Active steering*

The principle
Active steering varies the turning angle of the
front wheels in relation to steering wheel move-
ments. It also varies the steering force required
to turn the wheels, depending on the speed at
which you are driving.
At lower speeds, e.g. in the city or while parking,
the turning angle is increased, i.e. smaller steer-
ing wheel movements and less effort are
required to turn the wheels. At higher speeds, in
contrast, the turning angle is increasingly
reduced. Your BMW's handling is thus
improved across all speed ranges.
In critical situations, the system can correct the
wheel turning angle resulting from the driver's
steering and thus stabilise the vehicle before
the driver takes any action. This stabilising
intervention function is deactivated when DSC
is switched off, see page 71.
Malfunction
The warning lights come on. Active
steering is malfunctioning and deac-
tivated. At low speeds greater steer-
ing wheel movements are necessary,
at high speeds the car reacts more sensitively
to steering wheel movements. The stabilising
intervention may also be deactivated. Drive
cautiously and think well ahead. Have the sys-
tem checked.
Two-stage brake lights*
On the left: normal braking
75