Toyota 2008 FJ Cruiser Owner's Manual page 205

CAUTION
n To avoid an accident
Do not exceed 45 mph (72 km/h) or posted towing speed limit, whichever
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is lower. As instability (swaying) of the towing vehicle-trailer combination
increases as speed increases, exceeding 45 mph (72 km/h) may cause
loss of control.
Slow down and downshift before descending steep or long downhill
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grades. Do not make sudden downshifts.
Avoid holding the brake pedal down too long or too frequently. This could
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cause the brakes to overheat and result in reduced braking efficiency.
2-5. Driving information
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