What does this indicator light on the dash mean?

[climateguy]

the red arrow points to the indicator in question:

Here is a closeup:

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[3rdgenfan]

Appears to be a blind spot monitoring issue.

 

[The Weatherman]

That’s correct. It’s telling you there is a problem with blind spot sensors.

 

[climateguy]

Aha! Thanks.

There was a warning message "Blind Spot Alert Deactivated Trailer Attached" when I hooked up the trailer.

I thought that might be standard for when towing. This is the first time I've gone anywhere while towing a trailer.

The manual says towing a trailer doesn't necessarily deactivate the Blind Spot information system unless:

"Your vehicle does not have blind spot
information system with trailer coverage"

Does a 2024 Flash with MaxTow have the blind spot information system with trailer coverage"?

 

[climateguy]

The indicator disappeared when I unplugged the trailer connector. When I hooked up the trailer and plugged it in again, the indicator did not appear.

For the moment, I'll let sleeping indicators lie.

 

[Adventureboy]

This is normal. Blind spot indicator does not work when a trailer is connected. Nor does BlueCruise.

 

[climateguy]

The blind spot indicator does work when a trailer is connected, with some F-150 LIghtnings, according to the manual. Eg: this excerpt from the manual states that the BLIS turns off when a trailer is connected

But, if your vehicle does have BLIS with trailer coverage, system stays on. The manual has a section explaining it:

Since my Flash indicated the system turned off because a trailer was connected, and then indicated nothing after a few times a trailer was hooked up and disconnected, I'm still wondering if a 2024 Flash has BLIS when a trailer is connected, or if my indicator has an intermittent fault. I'll be able to confirm once I get back out into traffic with a trailer connected, when a vehicle comes into the blind spot.

 

[carys98]

The blind spot indicator does work when a trailer is connected, with some F-150 LIghtnings, according to the manual. Eg: this excerpt from the manual states that the BLIS turns off when a trailer is connected

But, if your vehicle does have BLIS with trailer coverage, system stays on. The manual has a section explaining it:

Since my Flash indicated the system turned off because a trailer was connected, and then indicated nothing after a few times a trailer was hooked up and disconnected, I'm still wondering if a 2024 Flash has BLIS when a trailer is connected, or if my indicator has an intermittent fault. I'll be able to confirm once I get back out into traffic with a trailer connected, when a vehicle comes into the blind spot.

Keep reading the next section. You need to tell the truck how long your trailer is so it knows where the blind spot ends.

 

[climateguy]

I gave the Ford software all the info it needed on the trailer. It is the "active trailer", and the only trailer the software knows about.

 

[carys98]

It should be standard on all trims so it might be time to visit the dealer.
https://www.f150lightningforum.com/...p-updated-with-specs-sheet.19160/#post-384042

 

[climateguy]

My experience with my Chevy Bolt software problems was I'd take it to the dealer, they'd keep it all day and claim it was fixed. When I got the vehicle back, the system would be operating in the same way, i.e. with intermittently disappearing backup camera grid lines. I don't think they have the slightest idea as to what to do with software. I decided to live without it.

These electric vehicles I own are the first new cars I have ever bought. I hated having anything to do with the dealers I bought these from. I do not like being lied to, to my face, repeatedly.

Anyway, I towed the trailer some distance today and the BLIS system not functioning indicator came on soon after I started. It stayed on until I disconnected the trailer at the end of the day. When the trailer was connected and the BLIS not functioning indicator appeared, I verified that the software described the trailer as the "active" trailer, then I manually turned the BLIS system back on in the software. Within a second or two the toggle switch in the display switched itself back to the OFF position.

I'm going to ask Ford to verify that a 2024 Flash has BLIS with trailer coverage. Then I'll try to get them to describe how to turn the system on when a trailer is connected. The last resort is to have anything to do with a dealer.

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