In such cases, Adaptive Brake Assist can:
R
intervene unnecessarily
R
not intervene
There is a risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake. Terminate the
intervention in a non-critical driving situation.
G
WARNING
Adaptive Brake Assist does not react:
R
to people or animals
R
to oncoming vehicles
R
to crossing traffic
R
when cornering
As a result, the Adaptive Brake Assist may not
intervene in all critical conditions. There is a
risk of an accident.
Always pay careful attention to the traffic sit-
uation and be ready to brake.
Due to the nature of the system, particularly
complicated but non-critical driving conditions
may also cause Brake Assist to intervene.
If Adaptive Brake Assist is not available due to a
malfunctioning radar sensor system, the brake
system remains available with full brake boost-
ing effect and BAS.
Adaptive brake lights
The adaptive brake lights warn following traffic
in an emergency braking situation by:
R
flashing brake lamps
R
switching on the hazard warning lamps
If you brake sharply from a speed of more than
50 km/h or are assisted by the Brake Assist, 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 warning
lamps are activated automatically. If the brakes
are applied again, the brake lamps light up con-
tinuously. 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 122).
ESP
®
(Electronic Stability Program)
General notes
i
Observe the "Important safety notes" sec-
tion (
Y
page 68).
ESP
®
monitors driving stability and traction, i.e.
power transmission between the tyres and the
road surface.
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 vehi-
cle on the desired course within physical limits.
ESP
®
assists the driver when pulling away on
wet or slippery roads. ESP
®
can also stabilise
the vehicle during braking.
4ETS (Electronic Traction System)
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 transfer-
red to the wheel or wheels with traction.
Traction control remains active if you deactivate
ESP
®
.
In appropriate driving situations, activate the
off-road programs:
X
Vehicles without the Off-Road Engineering
package (
Y
page 228)
X
Vehicles with the Off-Road Engineering pack-
age (
Y
page 229)
Off-road 4ETS (Electronic Traction Sys-
tem)
An ETS system specifically suited to off-road
terrain is activated automatically once an off-
road program is activated:
R
Vehicles without the Off-Road Engineering
package (
Y
page 228)
R
Vehicles with the Off-Road Engineering pack-
age (
Y
page 229)
72
Driving safety systems
Safety
