Mercedes-Benz E-Class Owner's Manual page 79

the brake system remains available with full
brake boosting effect and BAS.
In particular, the detection of obstacles can
be impaired if there is:
dirt on the sensors or the sensors are
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obscured
snow or heavy rain
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interference by other radar sources
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strong radar reflections, for example, in
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multi-storey car parks
a narrow vehicle travelling in front, e.g. a
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motorcycle
a vehicle travelling in front on a different
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line
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensor checked at a qualified spe-
cialist workshop. This also applies to colli-
sions at slow speeds where there is no visible
damage to the front of the vehicle.
Adaptive brake lamps
If you brake sharply from a speed of more
than 50 km/h or if braking is assisted by BAS
or BAS PLUS, the brake lamps flash rapidly.
In this way, traffic travelling behind you is
warned in an even more noticeable manner.
If you brake sharply from a speed of more
than 70 km/h to a standstill, the hazard warn-
ing lamps are activated automatically. If the
brakes are applied again, the brake lamps
light up continuously. The hazard warning
lamps switch off automatically if you travel
faster than 10 km/h. You can also switch off
the hazard warning lamps using the hazard
warning button ( Y page 140).
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ESP (Electronic Stability Program)
General notes
i Observe the "Important safety notes" sec-
tion ( Y page 72).
Driving safety systems
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ESP monitors driving stability and traction,
i.e. power transmission between the tyres
and the road surface.
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If ESP detects that the vehicle is deviating
from the direction desired by the driver, one
or more wheels are braked to stabilise the
vehicle. The engine output is also modified to
keep the vehicle on the desired course within
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physical limits. ESP
pulling away on wet or slippery roads. ESP
can also stabilise the vehicle during braking.
ETS/4ETS (Electronic Traction System)
ETS/4ETS traction control is part of ESP
Traction control brakes the drive wheels indi-
vidually if they spin. This enables you to pull
away and accelerate on slippery surfaces, for
example if the road surface is slippery on one
side. In addition, more drive torque is trans-
ferred to the wheel or wheels with traction.
Traction control remains active if you deacti-
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vate ESP .
Important safety notes
i Observe the "Important safety notes" sec-
tion ( Y page 72).
G
WARNING
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If ESP is malfunctioning, ESP
stabilise the vehicle. In addition, other driving
safety systems are switched off. This increa-
ses the risk of skidding and an accident.
Drive on carefully. Have ESP
qualified specialist workshop.
!
Vehicles with 4MATIC: switch off the igni-
tion when the parking brake is being tested
using a dynamometer.
Application of the brakes by ESP
erwise destroy the brake system.
! Vehicles with 4MATIC: function or per-
formance tests may only be carried out on
a 2-axle dynamometer. Before operating
the vehicle on such a dynamometer, please
consult a qualified specialist workshop.
assists the driver when
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.
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is unable to
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checked at a
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may oth-
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77
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