Renault Premium DXi 11, Service Manual

Page: 156 / 400

C4-12
Driving
Exhaust brake and exhaust brake "OPTIBRAKE"
(with Optidriver 2 gearbox)
Depending on your vehicle's equipment
Use the gear combinations to choose the down-
hill speed according to the gradient. To slow
the vehicle, release the accelerator pedal and
move control lever (1).
– Position 0:
The exhaust brake plus engine brake feature is
not active: the warning light (Q) together with
the rev counter blue sector (T) are extin-
guished.
– Position 1 with action on the accelera-
tor pedal:
The exhaust brake plus engine brake feature is
preselected but is not active: rev counter blue
sector (T) is illuminated.
– Position 1 without action on the accel-
erator pedal:
The exhaust brake plus engine brake feature is active at about 50% torque efficiency de-
pending on the vehicle load: warning light (Q) together with the rev counter blue sector (T)
are illuminated.
This blue sector indicates the maximum efficiency band of the retarder.
Never let the engine speed reach the red zone (runaway speed).
– Position 2 with action on the accelerator pedal:
The exhaust brake plus engine brake feature is preselected but is not active: the rev counter
blue sector (T) is illuminated.
– Position 2 without action on the accelerator pedal:
The exhaust brake plus engine brake feature is active at 100% torque efficiency: warning
light (Q) together with the rev counter blue sector (T) are illuminated.
This blue sector indicates the maximum efficiency band of the retarder.