Traeger D2 WiFire Controller for Timberline 850, KIT0357

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Replacement D2 Controller with WiFire Technology for Traeger Timberline 850 pellet grills that use direct current (DC) also known as D2 Direct Drive, manufactured 2019 or later.

Replacement For Part Number :
  • KIT0357

Compatible Models


  • Timberline 1300 DC
  • Timberline 850 DC



Assembly Instructions For Traeger D2 WiFire Controller for Timberline 850, KIT0357

  • Upon installation of the new controller, you will need to enter the QR code manually. Go to Menu > Wi-Fi information on the controller. In the app when asked to scan the QR code, hit enter manually. Then enter the password then the UUID found under Wi-Fi information on the controller

Helpful Tips

Traeger D2 WiFire Controller Troubleshooting:

WIFI channel

Please note that the grills require a 2.4 ghz signal to connect. 

Error Provisioning grill "Failed to download certificates"

If you are receiving this error, please go to and complete the connection Wizard.

Unable to get past "Connecting to grill" (Unable to join home WiFi network)

  1. Ensure the wifi password is correct.
  2. Move the grill and the router closer together and minimize the amount of interference between the two. I.e. walls, large appliances, etc.
  3. Ensure that the control panel is facing the direction the wifi signal is coming from.
  4. If the other methods are not fixing the issue, you may need to purchase a wifi extender. These can be purchased from many different retailers.


Grill status shows as “offline” when it should be “Online

  1. Give it some time, wait 5-10 minutes.
  2. Ensure you have the latest version of the app and grill firmware.
  3. Try powering the grill off and on using the power switch on the back of the grill.
  4. Try re-pairing the network in the grill settings.
  5. Go to the remote section of the app.
  6. Select the gear icon in the upper right corner on the grill screen.
  7. Select “re-pair network” under grill settings.


Grill not showing up in app

  1. Ensure you are running the latest version of the app and grill firmware.
  2. Ensure you are logged in on the Traeger app.
  3. Ensure the grill and phone are both on a 2.4GHz network.
  4. If your router has your 2.4 and 5 GHz networks combined, you may need to contact your internet service provider and have them split.
  5. If both your 2.4 and 5GHz channels have the same name, one may need to be changed so they are both different. If you are unsure how to do this, please contact your internet service provider.
  6. Delete the grill from the app and forget your wifi network from the grill. Then go through the pairing process.
  7. Go to the remote section of the app.
  8. Select the gear icon in the upper right corner on the grill screen.
  9. Select “Delete grill” under grill settings.
  10. Restart pairing process .


Grill is showing connected (Wifi Symbol on the controller shows connection and WiFi info screen shows connected to home network), but grill not showing up in App.

  1. Ensure you are logged in on the Traeger app.
  2. Forget Network on the grill.
  3. Power Cycle grill.
  4. Restart app.
  5. Retry connection process.



Timberline Only

Timberlines have an external wifi antenna on the bottom of the grill. For the best reception, it is important that it is installed. The antennae will need to be manually installed so make sure the customer has this connected. Point the antenna straight down for the best signal.


Unfortunately, sometimes products do not work like they are supposed to. We offer a 90 day warranty on manufacturer defects. Some manufacturers make this a very simple and easy process unfortunately others do not. Please be advised that warranty claims for these parts may take up to 4 weeks for processing, and customers must cover shipping.

Shipping Info

This Item Qualifies For Free Shipping!

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We ship to both Alaska and Hawaii! We do not offer next day or two day shipping to Alaska or Hawaii. Free shipping is not available to Alaska or Hawaii.

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Read More About Our Shipping Information

Please Note: Due to the COVID-19 emergency, USPS and UPS will not guarantee delivery times on next-day and second-day delivery services. Unfortunately, we will not be able to provide a refund for packages shipped this way which are late. Everyone is trying their best under these circumstances. Thank you for your understanding.

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