Toyota 4runner 2010 Instruction Manual page 289

CAUTION
Hitches
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If you wish to install a trailer hitch, contact your Toyota dealer.
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Use only a hitch that conforms to the gross trailer weight requirement.
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Follow the directions supplied by the hitch manufacturer.
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Lubricate the hitch ball with a light coat of grease.
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Remove the trailer hitch whenever you are not towing a trailer. After
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removing the hitch, seal any mounting hole in the vehicle body to prevent
entry of any substances into the vehicle.
When towing a trailer
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If the gross trailer weight exceeds 1000 lb. (453 kg), trailer brakes are
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required. Toyota recommends trailers with brakes that conform to all appli-
cable federal and state/provincial regulations.
Never tap into your vehicle's hydraulic system, as this will lower the vehi-
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cle's braking effectiveness.
Never tow a trailer without using a safety chain securely attached to both
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the trailer and the vehicle. If damage occurs to the coupling unit or hitch
ball, there is a risk of the trailer wandering into another lane.
2-5. Driving information
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