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6
TEBS E
GIO functions
120
6.27 Immobilizer
Vehicle type
All trailer vehicles
Purpose
Immobilizer for reducing the risk of theft.
The function can also be used as an ‘electric parking brake’. This secures the
parked vehicle against rolling in the event that unauthorised persons intentionally
or accidentally actuate the red button on the PREV.
Function
Using an integrated pulse-controlled lifting axle valve, the wheels of a parked vehi-
cle can be locked via the Tristop cylinder.
The immobilizer can be activated or deactivated by entering a self-defined PIN us-
ing the SmartBoard or the Trailer Remote Control.
If a vehicle is moved while the immobilizer is activated or the system is manipu-
lated, the TEBS E modulator can output an alarm signal (24 V voltage) to a con-
nected optional output device (warning lamp, horn).
Emergency release function or emergency release
The emergency release function can be used to deactivate the immobilizer without
entering the user PIN to allow moving the vehicle, in critical situations for example.
– You can set parameters for an emergency release function.
The emergency release function is activated via the SmartBoard and releases
the vehicle for a defined period of time.
Example of situation process ‘Vehicle secured with immobilizer’
Trailer with towing vehicle must be moved from a critical road situation. PIN is not
available.
– Activate the emergency release function via the SmartBoard or the Trailer Re-
mote Control.
– Move the vehicle to a safe location.
As soon as the vehicle is at a standstill for 60 seconds, the immobilizer is acti-
vated again.
If necessary, this process can be repeated up to 3 times. Then the emergency
release function is locked.
After activating the immobilizer with PIN and PUK, the emergency release func-
tion is available again.
Fault indicator / warning lamp
As of version TEBS E2, the driver is notified of the immobilizer status
by the fault indicator / warning lamp (amber). If the immobilizer is acti-
vated, the fault indicator / warning lamp flashes eight times after
switching the ignition on.
With TEBS E2 or higher, you can use parameter
Unlock only with en-
gaged parking brake
to set whether the immobilizer should only be
able to be unlocked with the parking brake applied.
Logging the events
For logging and evaluating the events, certain activities with the immobilizer are
stored with an entry in the operating data recorder (ODR), see chapter 5.10.6 ‘Op-
erating data record (ODR)’, page
. This data can be viewed by insurance agen-
cies or fleet managers for example.