Volvo 1990 780 Model
4th gear disengagement:
The 4th gear is engaged automatically after the transmission has shifted through 1st, 2nd and 3rd gears
at certain speeds and loads. By pressing in the button at the rear of the selector level, the 4th gear can be
disengaged, thus providing a three-speed transmission. As a reminder the
é
light on the dashboard
glows. By pressing in the button again, the transmission reverts to four-speed operation and the
é
light
shuts off.
Disengage the 4th gear when:
- towing a trailer
- driving in mountainous regions.
Since using the 4th gear improves fuel economy, it should be used as often as possible in conditions
other than those stated above.
Kick-down
Automatic shift to a lower gear is achieved by depressing the accelerator pedal fully and briskly. An up-
shift will be achieved when approaching the top speed for a particular gear or by releasing the
accelerator pedal slightly. Kick-down can be used for maximum acceleration or when passing at
highway speeds below a certain limit.
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