138
Driving and Driving Safety
f
To relieve the brake system on downhill
stretches, change down to a lower gear in
good time (engine braking).
If engine braking is insufficient on steep
stretches, operate the footbrake at intervals.
Avoid continuous braking as it overheats the
brakes and reduces the braking effect.
For information on brake fluid and checking the
brake fluid level:
f
Please see the chapter “BRAKE FLUID”
on page 221.
New brake pads or linings
New brake pads have to be “broken in”, and
therefore only attain optimal friction when the car
has covered several hundred miles or km.
The slightly reduced braking ability must be
compensated for by pressing the brake pedal
harder. This applies whenever the brake pads
and/or brake disks are replaced.
A
- Switch cruise control on/off
1
- Set/increase desired speed
2
- Reduce desired speed
3
- Interrupt (OFF)
4
- Return to set speed (RESUME)
Cruise Control
Cruise control maintains any selected speed
between approx. 20–150 mph (30–240 km/h)
without you having to use the accelerator.
Cruise control is operated using the control stalk
at the bottom left of the steering wheel.
Vehicles with PDK
Downshifts are carried out to help maintain the
pre-selected speed (especially when driving
downhill).
If the current traffic situation does not allow you to
drive safely at a constant speed and with sufficient
distance to the vehicle in front, using the cruise
control can cause accidents.
f
Do not use the cruise control in heavy traffic,
in city traffic, on twisting roads or under
unfavorable road conditions (e.g. wintry or wet
conditions, varying road surfaces).
f
Observe all local and national speed limits.
f
Do not reach through the steering-wheel
spokes while driving.
Switching cruise control readiness on
f
Press button
A
on the control stalk.
Maintaining and storing speed
1.
Accelerate or decelerate to the desired speed
using the accelerator pedal.
2.
Push the control stalk on the steering wheel
forward (position
1
).
The current driving speed is now stored as the
desired speed, which will be maintained
automatically.
Misuse of cruise control
Cruise control readiness
The grey symbol on the multi-function
display in the instrument panel indicates
readiness.
Desired speed
The desired speed that was stored is
displayed under the cruise control
symbol, which has now turned orange.
WARNING
h
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