Toyota 2009 4runner Owner's Manual page 253

NOTICE
n When installing a trailer hitch
Use only the position recommended by your Toyota dealer. Do not install
l
the trailer hitch on the bumper; this may cause body damage.
Do not use axle-mounted hitches, as they can cause damage to the axle
l
housing, wheel bearing, wheels or tires.
Safety chain
n
A safety chain must always be used between the towing vehicle and the
trailer. Leave sufficient slack in the chain for turns. The chain should cross
under the trailer tongue to prevent the tongue from dropping to the ground in
the case that it becomes damaged or separated. For the correct safety chain
installation procedure, ask your Toyota dealer.
Do not directly splice trailer lights
n
Directly splicing trailer lights may damage your vehicle's electrical system
and cause a malfunction.
2-5. Driving information
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