Volvo FH - Page 158

DLC
becomes active. On trucks with two driven axles,
the differential lock between axles will also be
engaged.
The differential lock is engaged automatically when
the driving wheels rotate at different speeds and the
speed is less than
15 km/h
.
The differential lock is disengaged if the speed
exceeds
15 km/h
or at the next gear change.
Overview of the switch's functions
Switch position Function
0 (upper position) No differential lock engaged.
1 (centre position) and TCS
engaged
DLC active.
1 (centre position) and terrain-
TCS engaged
DLC inactive.
1 (centre position) and TCS
disengaged
DLC inactive.
2 (lower position) The differential lock is manually engaged.
Switch position Function
0 (upper position) No differential lock engaged.
1 (centre position) and TCS
engaged
The differential lock between the axles is engaged.
Automatic engaging and disengaging of the
differential lock between the wheel pairs
depending on the speed conditions according to the
above description.
1 (centre position) and terrain-
TCS engaged
The differential lock between the axles is engaged.
1 (centre position) and TCS
disengaged
The differential lock between the axles is engaged.
2 (lower position) The differential lock between the axles is engaged.
Differential locks are engaged between each wheel
pair.
Driving
147