How do I reset my DEF light?
You will need to do a stationary reset. Park the vehicle on level ground, make sure you have added more that one gallon of def, and start the truck to let it idle for 30 seconds. Then drive the vehicle for 3 minutes at speeds over 6 mph.
Will check engine light come on if DEF is low?
4. Solid Diesel Exhaust Fluid (DEF) Lamp DEF level is low. Solid DEF Lamp and Check Engine Lamp Indicates lower DEF level, incorrect DEF type or an SCR system issue. Driver will experience a mild loss of engine power.
What does it mean when your DEF light is blinking?
Solid: Exhaust is at high temperature and vehicle is at low speed or parked. Flashing: Parked regeneration in process. System is not up to temperature. No change in driving style is required.
How do you know if DEF is low?
DEF Level: How to Find What You’re Looking For At 5%, the light starts flashing, and when levels drop below 2.5%, it turns solid. When DEF runs out entirely, the light turns red, and the truck is electronically limited from going more than five mph. DEF levels can also be checked manually.
How often should a DEF filter be changed?
about every 200k miles
The DEF Dosing Unit Filter will need to be replaced about every 200k miles as part of routine maintenance.
What does it mean when DEF light is blinking?
critically low
A flashing/blinking DEF indicator light means that your DEF level is critically low. That means drop whatever you’re doing and refill it. If you continue on ignoring that indication, the consequences could be dire. So, refill the DEF tank as soon as possible.
What happens if you dont use DEF?
If you ignore the DEF warning the truck will cease to work. Some diesel engine manufacturers allow the engine to go into reduced power mode so the truck can “limp home” or limit the number of times you can turn the engine over.
What does the DEF indicator light look like?
Before your DEF tank ends up empty, you will see an alert on your dash in the form of the DEF light. If your DEF drops below 2.5%, the light will be a solid amber. If you decide to ignore it, at the point where you run out of DEF, the light will glow solid red.
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.
How to check Def fuel light and check engine light?
Click to expand… Wash wheels and polish steps too. sometime helps in this situation. or use search button. Low nox conversion and READ IT. Check the wiring harness around the def tank. I’ve had problem with them fraying and breaking off from the sensors. Click to expand… This happened to me , changed both sensor’s did a reset and all good .
What causes a check engine light to flash?
The light will flash if the computer detects: Engine mechanical problems including worn parts. Fuel system problems. Bad injectors, regulator, or fuel pump. Increased emissions. Bad oxygen, EGR valve, or EVAP sensor.
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.