Volvo FM Handbook page 32

Symbol Meaning
Check the tachograph
The bogie lift switch is on.
The trailer bogie lift switch is on
ABS fault on tractor vehicle
ABS fault on trailer
Instruments and controls
Note
Refer to the error menu in the tachograph display.
On trucks equipped with A-ride, the symbol
indicates the end position.
If the symbol lights up at speeds exceeding
7 km/h, the ABS is disengaged. The braking
system operates as if no ABS is available.
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