TOYOTA 2010 Highlander - Manual (Page 228)

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2-5. Driving information
2
Wh
en drivin
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Trailer tongue load
● A recommended tongue load varies in accordance with the types
of trailers or towing as described below.
● In order to ensure the recommended values shown below, the
trailer must be loaded by referring to the following instructions.
The trailer cargo load should be distributed so that the tongue load
is 9 to 11% of the gross trailer weight, not exceeding the following.
2.7 L 4-cylinder (1AR-FE) engine
Without towing package: 150 lb. (68 kg)
With towing package: 350 lb. (150 kg)
3.5 L V6 (2GR-FE) engine
Without towing package: 200 lb. (90 kg)
With towing package: 500 lb. (200 kg)
(Tongue load / Gross trailer weight x 100 = 9 to 11%)
If the gross trailer weight is over 2000 lbs. (900 kg), it is necessary
to use a sway control device with sufficient capacity.
The gross trailer weight and tongue load can be measured with plat-
form scales found at a highway weighing station, building supply
company, trucking company, junk yard, etc.
Gross trailer weight
Tongue load