4-10 Controls and Instruments
PA-1628Operator's ManualH3-45 COACH
10
Retarder / Engine Brake Off
Press this button to cancel operation of the transmission retarder.
On vehicles equipped with engine brake, this button is a momentary switch that will cancel the Engine
Brake LOW or Engine Brake HIGH mode and switch the engine brake to AUTO mode. On
vehicles so equipped, an engine brake switch located in the dashboard can be used to cancel completely
(OFF mode) the engine brake.
NOTE
Engine brake is safe to use in any road conditions including adverse conditions.
11
Retarder / Engine Brake High
If your vehicle is equipped with a transmission retarder, this button has the same effect as the
retarder/engine brake LOW button.
On vehicles equipped with engine brake, pressing this button will permit full application of the engine
brake (100 % of braking power). Refer to "VOLVO ENGINE BRAKE (VEB)" on page26 in Section 5
Other Features for more information concerning the engine brake operation and AUTO mode.
12 Right Sunshade
Press and hold the button to lower the right sunshade. Press twice rapidly and hold the button to raise the
left or right sunshade.
CAUTION
Do not attempt to raise or lower these shades manually. Damage to the electric motor or roller
mechanism could result.
13 Volume (Dashboard Radio)
Use this button to increase or decrease the dashboard radio (driver’s radio) volume.
14 Seek (Dashboard Radio)
Use this button to seek up or down for a radio station.
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