TEBS E
6
GIO functions
91
6.11 Brake lining wear indicator
Vehicle type (BVA)
All trailer vehicles with disc brakes
Purpose
Wear indicators, a wire integrated into the brake lining, monitor the wear of both lin-
ings of a disc brake.
Function
Wear indicators can be connected on up to 6 brakes on the ECU. All wear indica-
tors are connected in series and are connected to the wear input. These are oper-
ated with the supply voltage (24 V/12 V).
Fault indicator / warning lamp:
If the wear indicators indicates that the wire is worn through for a period of at least
4 seconds (or longer) , a voltage will be measured at the lining wear sensor and
the warning will be activated. The fault indicator / warning lamp will warn the driver
if the end value for lining wear has been reached (100% brake lining wear).
When the ignition is switched on, the fault indicator / warning lamp (amber) flashes
in 4 cycles = 16 times. The fault indicator / warning lamp is no longer illuminated
when the vehicle's speed exceeds 7 km/h. Replacing the wear indicators is auto-
matically detected by the system when the linings are changed. Both warning lev-
els are deactivated after 8 seconds.
In systems with Trailer Central Electronic, the wear information is determined by
the Trailer Central Electronic. It is the TEBS E that warns the driver or triggers the
fault indicator / warning lamp. This is necessary because only an ECU can execute
triggering the fault indicator / warning lamp in the event of service information hav-
ing accumulated. If a SmartBoard is installed, the warning will also be displayed on
the SmartBoard.
Saving the data for the lining change
The last five lining changes (including odometer and operating hours when the
second warning level occurred) are stored in the ECU and can be read out via the
TEBS E Diagnostic Software.
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