5
TEBS E
braking system
50
5.10 ECU-internal functions
5.10.1 Odometer
Vehicle type
All trailer vehicles
Purpose
The Trailer EBS E is equipped with an integrated odometer which measures the
distance travelled during operation. The precision is determined with the tire size
relative to the defined tire size.
The odometer requires operating voltage. If the TEBS E is not supplied with volt-
age, the odometer does not work either and is therefore not secure against tamper-
ing.
If a SmartBoard is installed, the distance travelled is also recorded here - inde-
pendently of the TEBS E. This odometer keeps working even when the TEBS E is
not supplied with voltage.
Since the odometer in TEBS E counts the average values of all wheels, whereby
the odometer in the SmartBoard counts distance on wheel sensor c, different tire
circumferences (tire wear) can cause the odometer to vary.
No Y-cable is necessary for connecting the wheel sensor c to the SmartBoard,
since the connection is already integrated in the SmartBoard cable.
The following individual functions are possible:
Total odometer
The total odometer records the entire distance covered since initial installation of
the TEBS E system. This value is saved regularly and is read via the TEBS
E Diagnostic Software or via the SmartBoard (Sub-menu ‘Odometer’).
Daily odometer
The trip odometer can determine the distance travelled between two service inter-
vals or within a specific time span.
Reading and deleting the daily odometer is possible e.g. with the TEBS E Diagnos-
tic Software or the SmartBoard.
No special calibration of the trip odometer is necessary. A calibration factor is cal-
culated on the basis of the tire tread circumferences and the number of teeth of the
pole wheel from the EBS parameters.
Parameter setting
Tire circumference and number of teeth on the pole wheel are entered in tab 3,
Brake data.
When a modulator is replaced the odometer reading of the new unit
can be increased to adjust it to the mileage of the vehicle.
Reducing the odometer reading is not possible. The settings are made
via the TEBS E Diagnostic Software using the Tools, Increase odome-
ter reading.
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