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That's the DEF light telling you the truck is low on DEF or something is wrong with the system. Based on your mileage for a 2024 it's probably just low and needs to be filled soon. 2023+ use much more def than 20-22 did.Folks, my apologies for a dumb question, but could someone help with this indicator? Thank you!
Man I can certainly empathize with you! At first, without my glasses, I would have sworn and bet money that was the auto engine brake illuminator. Once I put my glasses on I could clearly see that it was not.I deleted my post since you are correct. That’s what happens when I don’t have my glasses on!
I have that gauge activated as well. This is the reason I've not seen that light; I always refill if close to 1/2 full.The other folks identified the light and almost certainly the issue, but I'd like to add that you can see a much more precise measurement of how much DEF is left by enabling the "Diesel Gauges" screen under "My View". I find it to be one of the more useful ones.
Based on your milage, I'd expect you are almost out and very close to going into "limp mode" if you don't add more DEF soon.
at first glance, I thought it was a "Cruise Ship" ; indicating when it is time to go on vacation..I deleted my post since you are correct. That’s what happens when I don’t have my glasses on!