Cabin air filter indicator light maybe? I don't know if the trucks have a light for that. It looks like they are trying to show air or something flowing through a filter type in the picture.
edit: I just looked at my own truck and I don't have that light in my dash. I bet it's telling you to change/clean your air filter. Don't the diesels have a filter minder thing on the airbox? Maybe it is wired to illuminate that light when it's time.
2002 F250 Lariat 5.4L, 4x4, Auto: 3" Magnaflow Exhaust; K&N Intake; SCT X3 w/ 5 Star Tunes; Leveled on 35" Road Ventures on MT Classic Lock wheels; Manual TC Lockup switch; FX4 Stabilizer; Recon Smoked Cab lights; Smoked Euro Tails; Line X wheel arches; Custom bumper and grill by me; 20% tint all around
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Replace the air filter, and press the button on top of the filter indicator (located next to the airbox) to reset.
Where exactly is the reset button? I removed the stock airbox/filter for a Banks setup. (2003 F250 6.0) My filter light came on, and I've cleaned and re-oiled my Banks filter, but the light is still on. Didn't know about the reset button.
Thanks in advance!
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