BMW 520D Manual Do Utilizador

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Driving
66
Active Cruise Control*
Principle
Active Cruise Control enables you to select a 
speed which the car will then maintain automat-
ically, assuming your progress is not 
obstructed.
Subject to reasonable limits, the system auto-
matically adjusts the speed of your car if you 
come up behind a slower vehicle. You can vary 
the distance to be maintained from the vehicle 
in front. For safety reasons, this distance 
depends on the speeds in question. To main-
tain sufficient distance, the system automati-
cally closes down the throttle, applies the 
brakes if necessary, and speeds up again if the 
vehicle in front accelerates. As soon as the road 
ahead becomes clear, it accelerates to your 
desired speed again. The desired speed is also 
maintained on downhill gradients.
Read and carefully comply with the information 
on the system's limits starting on page
 so 
that you can understand the system's range of 
applications and use the system appropriately.
Professional navigation system*
If there is a navigation DVD in the drive, see 
page
, the system will adapt the way the car 
is accelerated and slowed down to the road you 
are currently driving along.
If the car's position is not known, e.g. because 
you have left the area covered by the map, the 
navigation system will cease to have an influ-
ence.
Braking sensation
The system's automatic brake operation results 
in a braking sensation that is slightly different 
from what you feel when you brake the car your-
self in a similar situation. Unaccustomed noises 
when the car is braked automatically are nor-
mal.
Manual gearbox
You can shift gears while cruise control is acti-
vated. A shift notice is issued or the system is 
deactivated when you drive for an extended 
period at very high or very low engine speeds.
SMG
In the Sequential mode, an instruction to shift 
gear is issued or the system is deactivated if 
you drive for an extended period at very high or 
very low engine speeds.
In the Drive mode, the SMG behaves in a similar 
way to an automatic transmission in position D.
When to use it
The optimum road speed range on main roads 
and motorways in good condition is approx. 
80 to 140 km/h, approx. 50 to 85 mph. Make 
sure that you observe the relevant maximum 
legal speed limit.
Ideally, minimum speeds should not under-
shoot 30 km/h or 20 mph and maximum speeds 
not exceed 180 km/h or 110 mph.
Active Cruise Control does not release 
you from your personal responsibility to 
drive safely. 
Consider road-surface, weather and visibility 
conditions to decide whether and how the sys-
tem should be used. 
Use the system only when traffic is flowing 
smoothly and not on roads with loose surfaces 
or sharp bends, nor when there is road ice, fog, 
snow or heavy rain. 
Check the speed you are driving at as well as 
your stopping distance, and remain in a position 
to apply the brakes at all times. Otherwise oper-
ating conditions which violate the law or consti-
tute an accident risk could result.
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Online Edition for Part-No. 01 41 0 159 725 © 09/05 BMW AG