Mercedes-Benz ML320. Service manual - part 64

 

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Mercedes-Benz ML320. Service manual - part 64

 

 

83

Safety and Security

Anti-theft systems

Anti-theft systems

Immobilizer

The immobilizer prevents unauthorized 
persons from starting your vehicle.

Activating

Removing the key from the steering lock 
activates the immobilizer.

Deactivating

Turning the key in the steering lock to 
position 2 (

page 33) deactivates the im-

mobilizer.

Anti-theft alarm

Once the alarm system has been armed, a 
visual and audible alarm is triggered when 
someone:

opens a door

opens the liftgate

opens the hood

The alarm will stay on even if the activating 
element (a door, for example) is immedi-
ately closed.

The alarm system will also be triggered 
when

someone attempts to raise the vehicle

unlocking and opening the driver’s 
door with the mechanical key

Arming the alarm system

The alarm system is armed after locking 
the vehicle with the remote control. The 
turn signal lamps flash three times to indi-
cate that the alarm system is activated. A 
red lamp in the center console will flash af-
ter approximately 10 seconds when the 
alarm system is completely armed 
(

page 27).

i

In case the engine cannot be started 
(vehicle’s battery is in order), the sys-
tem is not operational. Contact an au-
thorized Mercedes-Benz Light Truck 
Center or call 1-800-FOR-MERCedes 
(in the USA), or 1-800-387-0100 (in 
Canada).

i

If the alarm stays on for more than 
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid* sys-
tem (

page 171) provided Tele Aid 

service was subscribed to and properly 
activated, and that necessary cellular 
service and GPS coverage are avail-
able.

84

Safety and Security

Anti-theft systems

Disarming the alarm system

The alarm system is disarmed when you 
unlock your vehicle with the remote con-
trol. The turn signal lamps flash once to in-
dicate that the alarm system is 
deactivated.

Canceling the alarm

To cancel the alarm:

Switch on the ignition by turning the 
key in the steering lock to position 2.

or

Press the

Œ or ‹ button on the 

remote control.

The alarm is canceled.

Tow-away alarm, glass breakage 
sensor

The tow-away alarm and the glass break-
age sensor are part of the anti-theft alarm 
system.

Once the tow-away alarm is armed, a visual 
and audible alarm will be triggered when 
someone:

attempts to raise the vehicle

breaks a window and reaches into the 
passenger compartment

i

If the turn signal lamps do not flash 
three times, the tow-away - glass 
breakage sensor is malfunctioning or 
one of the following elements may not 
be properly closed:

a door

the liftgate

the hood

Close the respective element and lock 
the vehicle again.

i

The alarm system will rearm automati-
cally again after approximately 
40 seconds if one of the doors or the 
liftgate is not opened.

i

The tow-away protection alarm is trig-
gered, for example, if the vehicle is 
lifted on one side.

If the alarm stays on for more than 
20 seconds, an emergency call is initi-
ated automatically by the Tele Aid* sys-
tem (

page 171) provided Tele Aid 

service was subscribed to and properly 
activated, and that necessary cellular 
service and GPS coverage are avail-
able.

85

Safety and Security

Anti-theft systems

Arming tow-away alarm and glass 
breakage sensor

When you lock your vehicle, the tow-away 
and glass breakage sensor alarm is auto-
matically armed.

Disarming tow-away alarm and glass 
breakage sensor

To prevent triggering the tow-away alarm 
feature, switch off the tow-away alarm and 
glass breakage sensor before towing the 
vehicle, or when parking on a surface sub-
ject to movement, such as a ferry or auto 
train.

Vehicles with trip computer*

The buttons are located in the overhead 
control panel.

1 Reset button
2 Mode button
3 Display
4 Glass breakage sensor

Turn key in steering lock to position 
(

page 33).

Return key to position 0 and remove it 
from the steering lock.

Within 30 seconds press button 1 
or 2.

The display shows 

OFF

.

Exit vehicle and lock vehicle with 
remote control (

page 32).

The tow-away alarm and glass breakage 
sensor remain switched off until the key is 
inserted in steering lock and turned to 
position 1.

86

Safety and Security

Anti-theft systems

Vehicles without trip computer

The buttons are located in the overhead 
control panel.

1 Switching off tow-away alarm and glass 

breakage sensor

Turn key in steering lock to position 2 
(

page 33).

Return key to position 0 and remove it 
from the steering lock.

Within 30 seconds press button 1 on 
the right or left side.

Exit vehicle and lock vehicle with 
remote control (

page 32).

The tow-away alarm and glass breakage 
sensor remain switched off until the key is 
inserted in steering lock and turned to 
position 1.

Canceling the alarm

To cancel the alarm:

Switch on the ignition by turning the 
key in the steering lock to position 2.

or

Press the

Œ or ‹ button on the 

remote control.

The alarm is canceled.

 

 

 

 

 

 

 

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