Mercedes-Benz M-Class Owner's Manual page 71

Anti-theft systems
68
The radar sensor system must be switched off
using the on-board computer in the vicinity of
radio telescope facilities in the following vehi-
cles:
vehicles without COMAND Online and nav-
R
igation
R vehicles without Audio 20 and Becker
MAP PILOT
vehicles for Australia
R
Information about switching off the radar sen-
sor system using the on-board computer can
be found in the "On-board computer and dis-
plays" section (
Y
®
For PRE-SAFE Brake to assist you when driv-
ing, the radar sensor system must be
switched on (
Y
tional.
Following damage to the front end of the vehi-
cle, have the configuration and operation of
the radar sensors 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.
STEER CONTROL
The steering assistant STEER CONTROL helps
you by transmitting a noticeable steering
force to the steering wheel in the direction
required for vehicle stabilisation.
This steering assistance is provided in partic-
ular if:
both right wheels or both left wheels are on
R
a wet or slippery road surface when you
brake
the vehicle starts to skid
R
You have control over the steering at all
times.
G
WARNING
If there is an ESP
receive any steering assistance from the
STEER CONTROL. The steering continues to
function with steering assistance.
page 249).
page 249) and be opera-
®
malfunction, you will not
Anti-theft systems
Immobiliser
The immobiliser prevents your vehicle from
being started without the correct key.
To activate with the key: remove the key
X
from the ignition lock.
®
To activate with KEYLESS-GO: switch the
X
ignition off and open the driver's door.
To deactivate: switch on the ignition.
X
i
The immobiliser is always deactivated
when you start the engine.
ATA (Anti-Theft Alarm system)
A visual and audible alarm is triggered if the
alarm system is primed and you open:
a door
R
the vehicle with the emergency key ele-
R
ment
the tailgate
R
the bonnet
R
The alarm is not switched off, even if you
close the open door that has triggered it, for
example.
To prime: lock the vehicle with the key or
X
KEYLESS-GO.
Indicator lamp : flashes. The alarm sys-
tem is primed after approximately 15 sec-
onds.
To deactivate: unlock the vehicle with the
X
key or KEYLESS-GO.