Intermittent Humming Noise When Truck is Off

[RETVETLA]

Has anyone else experienced this yet? I brought my new Tremor home last Thursday evening and night before last my wife noticed a subtle but noticeable humming/buzzing noise coming from the rear of the cab. I myself investigated this noise and it appears to be coming from around the fuel tank area under the truck. It is intermittent that's about a 5 second burst every 15 seconds or so. When I unlock the truck, it stops for a few seconds then its a constant humming for about 30 seconds and then returns to the intermittent activity. I'm not sure if it has anything to do with the pro power onboard inverter or the fuel pump. But it is concerning either way. It's a bit disconcerting to have bought such an expensive truck and within a weeks time there is a weird issue with it. Someone please tell me if you have heard this yourself with your truck. If you have, what was it and how was it resolved? By the way, there is no check engine light on the dash, the battery seems fine and the truck runs like champ.

2022 F150 Tremor 402A with 2KW Pro Power Onboard

 

[SoCalEd]

Our Atlas is more "awake" if it is off, but now locked. It's almost like a stand by mode.
If we turn it off and lock it, it is more asleep with more things completely off.

It could be something related to ProPower. I wonder if the truck off and locked behaves differently than off and unlocked.

 

[brtnstrns]

This happens constantly throughout the day? Or just around the 5-10 minutes after the trucks been used?

 

[RETVETLA]

This happens constantly throughout the day? Or just around the 5-10 minutes after the trucks been used?

It started a couple of days ago and after the truck is turned off the intermittent noise is constant all night and all day. I also checked with the truck unlocked and the noise then becomes steady and not intermittent. It's very concerning.

I just got off the phone with the service department of my local dealership and described the issue to them and they said that it wasn't normal for it to do that constantly. They indicated that it may be the fuel pump, fuel purge valve, fuel evaporator control module or fuel pump relay. I scheduled to have them take a look at it this coming Saturday morning. Once they figure out what it is, I will update this post with the resolution just in case anyone else experiences the same thing with their truck.

 

[brtnstrns]

It started a couple of days ago and after the truck is turned off the intermittent noise is constant all night and all day. I also checked with the truck unlocked and the noise then becomes steady and not intermittent. It's very concerning.

I just got off the phone with the service department of my local dealership and described the issue to them and they said that it wasn't normal for it to do that constantly. They indicated that it may be the fuel pump, fuel purge valve, fuel evaporator control module or fuel pump relay. I scheduled to have them take a look at it this coming Saturday morning. Once they figure out what it is, I will update this post with the resolution just in case anyone else experiences the same thing with their truck.

Gotcha. Yeah I wouldn't be concerned if it's a few minutes after the truck turns off since a lot of cars these days go through little systems checks and stuff with the fuel pump, etc after they're turned off. But throughout the day is not at all what I would expect to be normal.