TOYOTA 2011 FJ Cruiser - Manual (Page 226)

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2-5. Driving information
CAUTION
n To avoid an accident
l Do not exceed 45 mph (72 km/h) or posted towing speed limit, whichever
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.
l Slow down and downshift before descending steep or long downhill
grades. Do not make sudden downshifts.
l Avoid holding the brake pedal down too long or too frequently. This could
cause the brakes to overheat and result in reduced braking efficiency.