Volvo FM Handbook page 246

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I-Shift 235
Gearbox Oil Temperature Monitor
Shows the gearbox oil temperature in the information
display.
Heavy Start Engagement
Starting with higher engine speed in power program in
1st, which gives a higher starting torque. The function
increases the engine speed to facilitate heavy starts.
This is useful e.g. when the truck is stuck in soft
surfaces.
Optional characteristics
Enhanced Shift Strategy
Works together with the ECS and EBS to select the
correct gear for smooth movement on surfaces difficult
to manoeuvre or to get the maximum effect from the
auxiliary brakes.
Launch Control
Allows the engine to drive the wheels at idle without
the clutch slipping, which can be useful when e.g.
driving in traffic queues.
I-Roll (only together with VEB/VEB+)
Automatic engagement and disengagement of the
freewheel function, with the aim of reducing fuel
consumption. When the accelerator pedal is released,
the driveline is disconnected so that the vehicle can
roll freely, and the engine is brought down to its idling
speed.
Smart Cruise Control
Only active when the cruise control is activated. Saves
fuel by deactivating the auxiliary brakes in certain
programs. The function improves the cruise control
function by releasing the auxiliary brakes at the end of
downhill slopes.

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