CONTROLS - Instrument Cluster on, the Stop Engine light will come on and an audible alarm tone will sound. Diesel Exhaust Fluid (DEF) The diesel exhaust fluid gauge shows the approximate amount of DEF fluid in the DEF tank. NOTE For Export vehicles, the fuel gauges will not state: ULTRA LOW SULFUR DIESEL FUEL ONLY. CAUTION 3 Continuing to operate your vehicle with insufficient oil pressure will cause seri- ous engine damage. Failure to comply may result in equipment or property damage. CAUTION NOTE Use Diesel Exhaust Fluid only. Failure to do so may damage components of the Diesel Particulate Filter (DPF).
This vehicle may be manufactured with different fuel systems and differ- ent draw tube locations. Because of this and the amount of road crown, it is recommended that you do not operate your vehicle with less than one-quarter of your truck’s fuel capacity. Allowing the fuel level to go below one-quarter of capacity could result in the lack of fuel to keep the engine running. In ad- dition, you will want to keep the fuel tanks at least half-full to reduce con- densation of moisture in the tanks. This moisture can damage the engine. It is important to maintain oil pressure within acceptable limits.
For further information on engine oil and normal operating pressures, see the Engine Operation and Maintenance Manual. If the oil pressure fails to rise within 10 seconds after the engine starts, stop the engine and determine the cause. Check the engine manufacturer's manual for the correct oil pressure ranges for your vehicle's engine. If the oil pressure suddenly drops, or the audible alarm and engine oil pressure warning light come on while driving. For further information on engine gauges and operating your engine properly, refer to Engine Maintenance material. Besides empty and full, the gauge also indicates 1/4, 1/2, and 3/4 of total capacity.
DEF fluid is required to meet certain emission requirements. Do not allow your DEF tank to remain empty. Please refer to your emission supplemental manual for more details about DEF fluid. Vehicle Air Pressure The Primary Air Pressure gauge indicates pressure in the rear braking system. The Secondary gauge indicates pressure in the front braking system. Related tasks Each gauge indicates the amount of air pressure in each system in pounds per square inch (psi). On vehicles equipped with metric air pressure gauges, the gauge Engine, Oil Pressure If oil pressure drops below the minimum psi a red warning light in the gauge will turn 64 Y53-6047-2HEN (03/18)