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180 STARTING AND OPERATING
5. Push the RIGHT arrow on the steering wheel to
enter “TRAILER TOW”.
6. Push the UP or DOWN buttons until the Trailer
Brake Type appears on the screen.
7. Push the RIGHT arrow and then push the UP or
DOWN buttons until the proper Trailer Brake
Type appears on the screen.
8. In a traffic-free environment, tow the trailer on
a dry, level surface at a speed of 20–25 mph
(30–40 km/h) and squeeze the manual brake
control lever completely.
9. If the trailer wheels lockup (indicated by
squealing tires), reduce the GAIN setting; if the
trailer wheels turn freely, increase the GAIN
setting.
Repeat steps 8 and 9 until the GAIN setting is at a
point just below trailer wheel lockup. If towing a
heavier trailer, trailer wheel lockup may not be
attainable even with the maximum GAIN setting of
10.
* The suggested selection depends and may change depending on the customer preferences for braking performance. Condition of the trailer brakes, driving and road state may also
affect the selection.
Display Messages
The trailer brake control interacts with the instrument cluster display. Display messages, along with a single chime, will be displayed when a malfunction is
determined in the trailer connection, trailer brake control, or on the trailer Ú page 81.
Light Electric Heavy Electric Light EOH Heavy EOH
Type of Trailer Brakes Electric Trailer Brakes Electric Trailer Brakes
Electric over Hydraulic Trailer
Brakes
Electric over Hydraulic Trailer
Brakes
Load *Under 10,000 lb (4,536 kg) *Above 10,000 lb (4,536 kg) *Under 10,000 lb (4,536 kg) *Above 10,000 lb (4,536 kg)
WARNING!
Connecting a trailer that is not compatible with the ITBM system may result in reduced or complete loss of trailer braking. There may be a increase in stopping
distance or trailer instability which could result in personal injury.
22_DPF_OM_EN_USC_t.book Page 180
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