Operation in standing water
Ingestion of water into the diesel engine can result in immediate and
severe damage to the engine. If driving through water, slow down to
avoid splashing water into the intake. If the engine stalls, and ingestion
of water into the engine is suspected, do not try to restart the engine.
Consult your dealer for service immediately.
Rapid heat supplemental heating system (if equipped)
The optional rapid heat feature is an electrically powered device that is
designed to provide supplemental heat during engine warm up. For
maximum effectiveness mid to low blower speed is recommended during
initial warm up. When operating in automatic mode (when equipped) the
climate control unit will determine the appropriate blower speed for
existing conditions.
Note:Additional aftermarket electrical loads operated during engine
warm up may impact the performance of the rapid heat supplemental
heater.
DUAL FUEL TANK SELECTOR CONTROL (IF EQUIPPED)
If your vehicle is equipped with dual
fuel tanks, you will have a selector
control, located to the right of the
steering wheel, which allows you to
draw fuel from either tank. Your fuel
gauge and the DTE (distance to
empty) will display the amount of
fuel in the currently selected tank.
INTEGRATED ENGINE BRAKING
This feature increases engine braking at higher engine speeds to provide
better grade descent control with less brake and transmission wear and
tear.
This feature is integrated with the tow/haul mode feature. When tow/haul
mode is switched on, the integrated engine braking feature will also be
active. For more information on tow/haul, seeAutomatic transmission
operationin theOwner Guide.
Driving
14
2012 Diesel(67l)
Supplement(supplement), 1st Printing
Arabic_(LHD)(gc_lhd)
Additional maintenance items
1
Miles (x 1,000) 15 22.5 30 45 60 67.5 75 90 105 112.5 120 135 150
Kilometers (x 1,000) 24 36 48 72 96 108 120 144 160 172 184 206 240
Inspect engine and secondary cooling system
concentration (freeze-point protection), additive
strength (corrosion inhibitor), coolant level and hoses
2
• ••• ••• •••
Replace engine- and frame-mounted fuel filters
3
••• • • •
Replace climate-controlled seat filter (if equipped)•• • • •
Replace air inlet foam filter Replace at 45,000 miles (72,000 km), 97,500 miles
(156,000 km) and 150,000 miles (240,000 km)
Replace front wheel bearing grease and grease seal if
non-sealed bearings are used (2WD vehicles)••
Inspect accessory drive belt(s)
4
•
Change rear axle fluid (Dana axles; refer toSpecial
operating conditions)Replace at 100,000 miles (160,000 km), then at
150,000 miles (240,000 km)
Change engine coolant and secondary coolant5
Change automatic transmission fluid and filter on
6–speed TorqShifttransmission•
Change front axle fluid (4WD vehicles)•
Change transfer case fluid (4WD vehicles)•
Scheduled Maintenance Guide
75
2012 Diesel(67l)
Supplement(supplement), 1st Printing
Arabic_(LHD)(gc_lhd)
