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I-Shift 249
opportunities when I-Roll can be activated and thereby
save fuel.
Prevents down-changing
In certain cases it can be better to remain in a higher
gear even if the engine speed is low. For example, just
before the top of a hill when you want to drive over
the crest without changing down, which saves fuel.
When driving, keep the plus button pressed in until the
truck starts to accelerate again, to prevent down-
changing.
Prevents up-changing
To prevent an up-change when e.g. driving on an
uphill slope, the minus button can be held in until the
truck starts to retard.
The function can also be used just before an uphill
slope to get a higher speed into the uphill slope.
Down-changing functions normally in these cases.
Greatest possible down-change
To obtain the greatest possible down-change e.g. just
before a steep hill:
• Hold the minus button pressed in
AND
• Move the gear shift lever from the A to the M
position
• Release the minus button
This gives a great down-change step when the minus
button is released, for the purpose of immediately
getting a high engine speed in the vehicle. Keep the
lever in the M position as long as you wish to prevent
a new gear change.
Save brakes
Preferably use the engine brake to brake towards a
stop to save the service brakes. When braking hard,
brake program B can be used. Down-changing will
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