Ford 1997 Aerostar Manual page 177

Forced Downshifts
To gain acceleration in j (Overdrive) or Drive
(Overdrive off) when passing another vehicle,
push the accelerator to the floor. The
transmission will downshift to the appropriate
gear: fourth, third, second or first gear.
Traction-Lok Rear Axle
(If equipped)
This axle provides added drive away traction on
slippery surfaces, particularly when one or more
wheels are on a surface with poor traction.
Extended use of other than matching size tires
on a Traction-Lok rear axle could result in a
permanent reduction in effectiveness. This loss of
effectiveness does not affect normal driving and
should not be noticeable to the driver.
Electronic 4-Wheel Drive (E-4WD)
(If equipped)
If your vehicle is equipped with the E-4WD
option, power is provided to all four wheels
whenever you press the accelerator pedal. It
improves both handling and traction during
difficult driving conditions, adjusting
automatically to your driving needs. Because the
entire E-4WD system is controlled by a
microprocessor, your vehicle is not equipped
with the switch or shift lever used with most
traditional 4WD vehicles. The microprocessor
does all the adjusting for you.
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