What happens if I run low on DEF?
What happens if I run low on DEF?
If the truck is allowed to run out of DEF the engine’s power is reduced, a solid red warning will be displayed and the vehicle speed will be limited to 5 mph until the DEF tank is refilled.
When does the Def and check engine light come on?
SCENARIO FOUR: YOUR STOP ENGINE LIGHT IS ON WITH FLASHING DEF & CHECK ENGINE LIGHT. If the engine has been shut down or has idled for one hour after the DEF tank has been run dry, the Stop Engine Light will also be lit along with the flashing DEF Lamp and Check Engine Light. Engine power will continue to be reduced automatically.
What happens if you ignore the Def light?
Normal engine power will be restored after refilling the DEF tank. Essentially, you ignored the DEF light when it was blinking, and now you have to refill the tank before you can do much else. SCENARIO FOUR: YOUR STOP ENGINE LIGHT IS ON WITH FLASHING DEF & CHECK ENGINE LIGHT.
What does it mean when your Def light is blinking?
SCENARIO THREE: YOUR DEF LIGHT IS FLASHING/BLINKING, AND THE CHECK ENGINE LIGHT IS ON. A flashing DEF Light combined with a Check Engine Light indicates that the DEF level is critically low and you will derate.
What does a Def level light bar mean?
• The light bar indicates the level of fluid in the DEF tank. • Low DEF levels will trigger a decrease in engine performance. DEF level is EMPTYand IGNORED Vehicle speed limited to 5 mph / engine derated Flashing DEF level is EMPTY Vehicle speed limited to 55 mph / engine derated DEF level is very lowSolid
When does the Def light come on after Idle?
If the engine has been shut down or has idled for one hour after the DEF tank has been run dry, the Stop Engine Light will also be lit along with the flashing DEF Lamp and Check Engine Light. Engine power will continue to be reduced automatically.
Normal engine power will be restored after refilling the DEF tank. Essentially, you ignored the DEF light when it was blinking, and now you have to refill the tank before you can do much else. SCENARIO FOUR: YOUR STOP ENGINE LIGHT IS ON WITH FLASHING DEF & CHECK ENGINE LIGHT.
SCENARIO THREE: YOUR DEF LIGHT IS FLASHING/BLINKING, AND THE CHECK ENGINE LIGHT IS ON. A flashing DEF Light combined with a Check Engine Light indicates that the DEF level is critically low and you will derate.
• The light bar indicates the level of fluid in the DEF tank. • Low DEF levels will trigger a decrease in engine performance. DEF level is EMPTYand IGNORED Vehicle speed limited to 5 mph / engine derated Flashing DEF level is EMPTY Vehicle speed limited to 55 mph / engine derated DEF level is very lowSolid
