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ADAPTIVE BRAKE ADAPTIV E BRAKE enhance s braking safet y
and offers increased braking comfort . In addi-
tion to th e braking function , ADAPTIV E BRAKE
also has th e HOLD function ( Y
page 193) and
hill start assist ( Y
page 153).
STEER CONTROL
Gene ra l inf orm ationSTEE R CONT ROL help s you by transmitting a
noticeable steering force to th e steering
whee l in th e direction require d for vehicl e
stabilization .
This steering assistanc e is provide d in partic-
ular if: R
bot h right wheels or bot h lef t wheels are on
a wet or slippery road surfac e when you
brake. R
th e vehicl e start s to skid.
Import ant safety notes
i Obs erv e th e "Importan t safet y notes" sec -
tion ( Y
page 65).
No steering assistanc e is provide d from
STEE R CONTROL, if: R
ES P ®
is malfunctioning .R
th e lighting is faulty.
If ES P ®
is malfunctioning , you will be assisted
further by th e electrical power steering .
Protecti on against theft
Imm obilizer
The immobilize r prevents your vehicl e from
bein g started without th e correc t SmartKey. X
To act iva te wit h th e SmartKey : remove
th e SmartKey from th e ignition lock.X
To act iva te wit h KEYLESS-GO start-
fu nction or KEYLESS-GO: switch th e igni-
tion off and open th e driver' s door .X
To deacti va te: switch on th e ignition .
When leaving th e vehicle, always tak e th e
SmartKey wit h you and loc k th e vehicle. Any-
on e can start th e engin e if a valid SmartKey
has been lef t inside th e vehicle.
i The immobilize r is always deactivated
when you st art th e engine.
In th e event that th e engin e canno t be star-
te d (yet th e vehicle's battery is charged),
th e system is no t operational. Contac t an
authorize d Mercedes-Benz Cente r or call
1-800-FOR-MERCedes (in th e USA) or
1-800-387-0100 (in Canada).
ATA (anti-theft ala rm system)
X
To arm: loc k th e vehicl e wit h th e SmartKey
or KE YLE SS-GO .
Indicato r lamp C flashes . The alarm sys-
te m is armed after approximately
15 sec onds. X
To disarm: unloc k th e vehicl e wit h th e
SmartKey or KEYLESS-GO .
or X
Inser t th e SmartKey int o th e ignition lock.Protection against theft 73
Safety Z
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A visual and audible alarm is triggered if the
alarm system is armed and you open: R
a door R
the vehicle with the mechanical key R
the tailgate R
the hood X
To switch the alarm off with the Smart-
Key: press the 6 or 7 button on the
SmartKey.
The alarm is switched off.
or X
Vehicles with KEYLESS-GO start-func-
tion or KEYLESS-GO: remove the Start/
Stop button from the ignition lock
( Y
page 149). X
Insert the SmartKey into the ignition lock.
The alarm is switched off.
The alarm is not switched off, even if you
close the open door that triggered it, for
example.
i If the alarm continues for more than
30 second s, the mbrace emergency call
system automatically notifies the Cus-
tomer Assistance Center. This is done
either by text message or data connection.
The emergency call system sends the mes-
sage or data provided that: R
you have subscribed to the mbrace ser-
vice. R
the mbrace service has been activated
properly. R
the necessary mobile phone network is
available.74
Protection against theft
Safety
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Mechanical key
General notes If the vehicle can no longer be locked or
unlocked with the SmartKey or KEYLESS-GO,
use the mechanical key.
If you use the mechanical key to unlock and
open the driver's door or the trunk lid, the
anti-theft alarm system will be triggered
( Y
page 73).
There are several ways to turn off the alarm: X
To deactivate the alarm with the key:
press the 6 or 7 button on the key.
or X
Insert the SmartKey into the ignition lock.
or X
To deactivate the alarm with KEYLESS-
GO: press the Start/Stop button in the igni-
tion lock. The SmartKey must be in the
vehicle.
or X
Lock or unlock the vehicle using KEYLESS-
GO. The SmartKey must be outside the
vehicle.
If you unlock the vehicle using the mechanical
key, the fuel filler flap will not be unlocked
automatically. X
To unlock the fuel filler flap: insert the
SmartKey into the ignition lock.
Removing the mechanical key X
Push release catch C in the direction of
the arrow and at the same time remove
mechanical key D from the SmartKey.
For further information about: R
unlocking the driver's door ( Y
page 84)R
unlocking the cargo compartment
( Y
page 89) R
locking the vehicle ( Y
page 85)
Inserting the mechanical key X
Push mechanical key D completely into
the SmartKey until it engages and release
catch C is back in its basic position.
SmartKey battery
Important safety notes
G WARNING
Batteries contain toxic and corrosive substan-
ces. If batteries are swallowed, it can result in
severe health problems. There is a risk of fatal
injury.
Keep batteries out of the reach of children. If
a battery is swallowed, seek medical attention
immediately.
The SmartKey batteries contain perchlorate
material, which may require special handling
and regard for the environment. National
guidelines must be observed during disposal.
In California, see www.dtsc.ca.gov/
HazardousWaste/Perchlorate/
index.cfm .
Mercedes-Benz recommends that you have
the battery replaced at a qualified specialist
workshop. SmartKey 79
Opening and closing Z
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