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212
4-1. Before driving
TUNDRA_OM_USA_OM0C025U_20MY
n Trailer brake controller
→P. 327
n Matching trailer ball height to trailer coupler height
n Before towing
Check that the following conditions are met:
l Ensure that your vehicle’s tires are properly inflated. (→P. 544)
l Trailer tires are inflated according to the trailer manufacturer’s recommen-
dation.
l All trailer lights work as required by law.
l All lights work each time you connect them.
l The trailer ball is set at the proper height for the coupler on the trailer.
l The trailer is level when it is hitched.
Do not drive if the trailer is not level, and check for improper tongue weight,
overloading, worn suspension, or other possible causes.
l The trailer cargo is securely loaded.
l The rear view mirrors conform to all applicable federal, state/provincial or
local regulations. If they do not, install rear view mirrors appropriate for tow-
ing purposes.
l Depress TOW/HAUL button (if equipped). (→P. 228)
l The manual headlight leveling dial is correctly adjusted. (→P. 236)
No matter which class of tow hitch
applies, for a more safe trailer hookup,
the trailer ball setup must be the proper
height for the coupler on the trailer.
Coupler
Trailer ball
1
2
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