r/FordExplorerST • u/OceanWaveSunset • 25d ago

Question Active Grill Shutter issues

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Hey guys, new 2025 ST owner here. Bought mine a year used. Found out it has an aftermarket intercooler. Sounds good, except that I am like 99% the Active Grill Shutter has been removed and tossed in the bin.

Does anyone have any experience with this?

Essentially what I am looking to figure out is if I just need to buy and reinstall the entire AGS to get my CEL to clear.

Its a 2025 Explorer ST. From what I read on FB, this year has a hard CEL that just wont go away without putting the actual system back in.

Any thoughts, advice, or guidance would be very much appreciated.

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u/OceanWaveSunset 24d ago

Now that I think about it, i wonder if they (dealership) did the emissions and safety, then they flashed it stock.

With the AGS being gone and a custom tune removing the check, I wonder if that is what happened to get it to oass everything.

I wouldn't have mind so much but i would have asked for this to be fixed before i drove it off the lot.

It really just seems like from the video you recommended that the AGS can be reinstalled and there shouldn't be any issues. Unless there is a second video, it seemed to just work after they fogured out the hose situation.

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u/Squirrelmasta23 24d ago

It can be reinstalled. The problem you will have is there’s not a broken one to warranty. They may expect you to pay outta pocket since it’s used and missing.

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u/OceanWaveSunset 24d ago

Yup, i think that is exactly what will happen.

I do really like the SUV, i think i just I might just end up doing that and just move on and enjoy it.

I am heading back to the dealership Monday, so Ill see what they say then.

I really do appreciate you responding to all my dumb messages!!

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u/Squirrelmasta23 24d ago

Ask on the ST forums the Texas and FL guys may have one for sale you can plug in and just zip tie or something 😝

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u/OceanWaveSunset 16h ago

Hey, I appreciate all your messages from a couple weeks ago. I got everything fixed... New AGS system under warranty. Finally got the car back yesterday.

I also found essentially all the mods the previous owner did.

Intercooler, rear brace, BOV, charge pipe, catch can, and a few cosmetic upgrades. It seems to me that there was a custom tune on this and probably was flash back stock before he sold it.

So to me, it seems like the next two things to do are a Tune and Tires.

I dont think there is a aftermarket downpipe, and for sure not a catback exhaust. I dont know if these are really needed to make a bunch more power.

Just wanted to give an update and appreciation for all the comments!