Ford Ranger Owner's Manual page 111

Seating and Safety Restraints
Using the Power Seats (If equipped)
If your vehicle has the power seat option, you can adjust it in
several directions. The controls are on the outboard side of the
seat.
The power controls on the driver's seat
Inflating the lumbar support
If your vehicle is equipped with this option you can
inflate/deflate the lumbar support pad in the seat back.
To inflate the lumbar support pad, push the "+" end of the rear
rocker switch. To deflate the lumbar support pad, push the " "
end of the switch.
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