If you can’t scan and reset, go to a local mechanic and get help from them.

And the system will reset successfully.

However, it will briefly show the warning and then clear again.

Now, go back to the ‘Reductant Data Reset’ and click the reset again.Now reset the system, and the warning sign will be cleared.Click on the ‘Reductant’ fluid and go to the ‘Tank level reset’ option.Find out the ‘Module setup’ by turning on the scanner.The plug-in point is located on the driver’s side. Connect the scanner to the scan port adjacent to the dashboard.You can reset the exhaust fluid system and clear the service DEF message in 07 simple steps with the help of a scan tool. If adding DEF doesn’t work, apply the second method- 2. Watch this video to learn how to add DEF to your Duramax. įill your 5.3-gallon tank with diesel exhaust fuel, and the clear Duramax service DEF system message will go away.Īfter filling the tank with DEF, start the truck and let it idle for 50 seconds.ĭrive the vehicle for 5 minutes at low speed, Service DEF system message will go away. Reduced diesel exhaust fluid will trigger your vehicle to go to the Limp Mode or Reduced Engine Power Mode. If you don’t do so, the diesel exhaust fuel will reduce and cause the service DEF message. You have to refill the tank with DEF every 6000 miles. The tank is located on the front passenger seat under the hood, and the cap of the tank is blue. It is stored in a separate tank behind the engine under the hood. By Refilling DEFĭEF is not a fuel additive or fuel cleaner. Let’s discuss these 04 methods in detail. There are 04 ways to clear the service DEF message, including adding DEF, scanning with an OBD scanner, disconnecting the negative battery terminal, and disconnecting the ABS sensor. How to Clear Service DEF System Message Duramax How to Clear Service DEF System Message Duramax.

2011 dodge 4500 service def system