Automatic Transmission
107
2
AUTOMATICALLY SELECTED MODES
NOTE: Automatically selected
modes cannot be selected by the
driver and will not operate if
Sport or Snow mode are
selected.
The transmission control system automatically selects
different gear change modes, listed below, designed to suit a
variety of driving conditions.
•
Hill ascent, trailer and high altitude mode
A suitable gear change pattern is selected to counter
momentum loss, caused by the more frequent gear
changing which can occur when climbing hills, or when
towing a trailer or caravan. This gear change pattern is also
selected at high altitudes to combat low engine torque.
•
Hill descent mode
Unless some form of braking is applied, vehicles will
naturally increase speed while travelling down hill. On
most automatic vehicles, this results in the highest gear
being selected, thereby reducing engine braking to a
minimum.
On Rover 75 however, the hill descent mode provides
engine braking by causing the transmission to
automatically change to a lower gear on steep downhill
gradients, provided the following criteria occur:
NOTE: Hill descent mode is
cancelled when the throttle is
reapplied.
•
Road speed exceeds 19 mph (30 km/h).
•
Foot brake is applied for at least one second.
•
Accelerator pedal is fully released.
•
Cruise control mode
When cruise control (if fitted) is activated, a suitable gear
change pattern is selected which is less sensitive to throttle
changes. This reduces the amount and frequency of gear
changes, providing a smoother ride.
Summary of Contents for Seventy Five
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