Mercedes-Benz GLA-Class 2015 Owners Manual - Manual (Page 71)

ETS/4ETS (Electronic Traction System)
i Observe the "Important safety notes" sec-
tion (
Y
page 64).
ETS/4ETS traction control is part of ESP ® .
ETS brakes the drive wheels individually 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 transferred to
the wheel or wheels with traction.
ETS remains active when you deactivate
ESP ® .
Off-road 4ETS (Electronic Traction Sys-
tem)
A 4ETS system specifically suited to off-road
terrain is activated automatically once the off-
road program is activated (
Y
page 186).
Important safety notes
G WARNING
If ESP ® is malfunctioning, ESP ® is unable to
stabilize the vehicle. Additionally, further driv-
ing safety systems are deactivated. This
increases the risk of skidding and an accident.
Drive on carefully. Have ESP
® checked at a
qualified specialist workshop.
! If you test the parking brake using a brake
dynamometer, switch the ignition off.
Application of the brakes by ESP ® may oth-
erwise destroy the brake system.
! Vehicles with 4MATIC: switch off the igni-
tion when the electric parking brake is
being tested on a brake dynamometer.
Application of the brakes by ESP
® may oth-
erwise destroy the brake system.
! Vehicles with 4MATIC: function or per-
formance tests may only be carried out on
a 2-axle dynamometer. Before you operate
the vehicle on such a dynamometer, please
consult a qualified workshop. You could
otherwise damage the drive train or the
brake system.
! Do not tow vehicles with 4MATIC with the
front or rear axle raised.
Vehicles without 4MATIC: when towing your
vehicle with the front axle raised, it is impor-
tant that you observe the notes on ESP ®
(
Y
page 319).
Vehicles with 4MATIC: when towing your
vehicle with both axles on the ground, it is
important that you observe the notes on ESP ®
(
Y
page 319).
ESP ® is deactivated if the å ESP ® OFF
warning lamp in the instrument cluster lights
up continuously when the engine is running.
If the ÷ ESP
® warning lamp and the å
ESP ® OFF warning lamp are lit continuously,
ESP ® is not available due to a malfunction.
Observe the information on warning lamps
(
Y
page 256) and display messages which
may be shown in the instrument cluster
(
Y
page 222).
i Only use wheels with the recommended
tire sizes. Only then will ESP ® function
properly.
Characteristics of ESP ®
General information
If the ÷ ESP warning lamp goes out before
beginning the journey, ESP ® is automatically
active.
If ESP
® intervenes, the ÷ ESP ® warning
lamp flashes in the instrument cluster.
If ESP
® intervenes:
X Do not deactivate ESP ® under any circum-
stances.
X
Only depress the accelerator pedal as far as
necessary when pulling away.
X Adapt your driving style to suit the prevail-
ing road and weather conditions.
Driving safety systems
69
Saf
ety
Z