Mazda mx5 Owner's Manual page 177

When Driving
Transmission
Second gear fi xed mode
When the selector lever is moved back
while the vehicle speed is about 10 km/h
(6.2 mph) or less, the transmission is set in
the second gear fi xed mode. The gear is
fi xed in second while in this mode for
easier acceleration from a stop and driving
on slippery roads such as snow-covered
roads.
If the selector lever is moved back or
forward while in the second gear fi xed
mode, the mode will be cancelled.
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