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Automatic
Transmissions
Automatic
transmissions fitted to today’s cars are
very complex systems which work in conjunction
with the cars engine management system to enable
the car to obtain a smooth transition between
gear changes and also obtain the lowest fuel consumption
possible.
This complex system is very reliable but if a
fault occurs then the electronic side of the system
can go into what is commonly known as limp home
mode.
This means if there is a fault detected the gearbox
may be locked electronically into a fixed gear
i.e. third gear to enable the car to be driven
home or to a garage for the system to be interrogated.
This will normally be shown to the driver via
a dash or centre consul fault light being illuminated.
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