[FM_Jack]

Probably not what happen to you but today on my way home I got off the highway and after a few minutes I noticed that the speed limit indicator in my dash never updated - stayed on 65. I later noticed I wasn't able to pull up OEM navigation. Then eventually got a message that the navigation system had a fault and it said to take it into the dealer to have it checked. (which now somewhat answers my question about how the system decides the speed limit - could be more dependent on map data then actually reading a sign. That's what Google Maps does). So my speed limit was still displaying 65 while passing multiple signs.

I went out later to get dinner and it was back.

 

[ChasingCoral]

How could it believe 59 was a posted speed limit! That's just sad.

It could believe 55 is a posted speed limit and the speed tolerance is probably set at +4 mph.

 

[2023 lighting]

It could believe 55 is a posted speed limit and the speed tolerance is probably set at +4 mph.

Ah, now that makes sense.

 

[douglas]

I have the same issue but I believe the fault is with the Speed Tolerance. No matter what I set it too it gets reset to + 10MPH (16Kmh).

 

[Jaronu]

Clearly, the truck is possessed! Get some video, pitch to the History channel, and get your very own reality TV show.....

Christine the movie

 

[Dave’sNotHere]

I took a road trip from the Bay Area to Santa Barbara and was using Blue cruise on a section of 101 in San Luis Obispo when all of a sudden the Lightning just took off!

I looked down and BlueCruise was registering the speed limit as 85 MPH (the posted speed was 65 MPH) and set my target speed for 90 MPH!

This happened both on my way to Santa Barbara and on my way back to the Bay. On my way back I grabbed a picture before hitting the brakes. View attachment 3403

This is crazy, right? Has anyone else experienced this?

That is completely insane. I’ll me making that same trip tomorrow, but will not be utilizing Blue Cruise!

I had previously decided that Blue Cruise wasn’t worth the anxiety it causes and intended to avoid using it altogether. But the little prompts are always tempting, so yesterday I decided to give it a shot on the interstate. It took over just fine and kept me in my lane, although it felt a little like bumper bowling as it alternated between too far right and then too far left. I thought I’d give it some time to see if it ever would maintain center of lane, but before that could be determined another vehicle changed lanes in front of me and it was obviously “too close” for Blue Cruise because it hit the brakes hard. If driving myself, I would have taken my foot off the accelerator and been prepared to brake if needed. In this case, based on my many years of driving experience, my gut tells me that “coasting” would have done the job. I was immediately fearful of being struck from behind due to the Blue Cruise overreaction. So, once again, I’m done with it and will disable the friendly prompts less I give into it again in a moment of weakness. I totally get that it wants to always maintain a safe following distance, but there are ways to finesse that without jamming on the brakes. This technology is clearly not ready for prime time.

 

[btreece]

Was the 101 highway sign white with black letters and you have speed limit sign recognition on? I had this happen with an older IL Hwy 90 sign (in downtown Rockford, IL 30 mph) and I just hit cancel real quick.

Adaptive cruise lets you adjust the following distance, maybe you had it on 4 bars instead of 1 or 2. I generally use 1 or 2 bars at highway speeds and 3 or 4 at local speeds.

Many of the BC settings are not set and forget and need to be tweaked for the driving situations/conditions.

 

[JupiterLightning]

So I set my BlueCruise tolerance to 15mph over speed limit. I thought I'd read on here that it wouldn't work above the tolerance and I didn't want it turning off going 76 on highway.

I've now noticed it is randomly adjusting my speed to fit this tolerance. I set it for 78mph and then 10 minutes later when the speed limit went from 65 to 70, I looked down and I'm going 85!

Today, I set it back to 10mph tolerance. I'm cruising at 78mph and when speed limit goes from 70 to 65 it automatically reduced my speed to 75. I do not like that at all.

How can I get this to not change my speeds? Turn the tolerance off completely?

 

[btreece]

I do not think that is random. The tolerance amount of x mph will apply whether you are going 30 or 70. Either turn off the tolerance or the speed limit sign recognition. I have mine set at 7 mph, If I am going less than 50 I manually bump it down 2 or 3 mph. It will go back to 7 when the speed limit changes (either going up or down).

 

[Henry Ford]

My 2¢

I have the automatic speed adjustment turned off. My speed choice is too situation dependent to leave it to a one-speed-fits all calculation. I might set the cruise to 77 on a 70 mph highway but 60 is more comfortable on a 55 mph road. It's easy enough to adjust speed using the up and down buttons to set the exact perfect speed for a given situation.

 

[LightningPilot]

I have played with the tolerance as well, and do not like the way this is set up. The worst part for me is that speed limit sign recognition is required to use Blue Cruise, and I have take the truck on several very long trips. The inaccuracy of speed limit recognition technology also contributes to this "adventure", when a sign that says 55 mph for truck towing trailers causes my truck to hit the brakes from the 70-ish I have set, all the way down to 55, even though it doesn't apply to me. Basically, if the system sees a rectangular sign with some large numbers on it, it "reads" that as the new speed limit and changes your speed. This is going to need to change....

 

[JupiterLightning]

I have played with the tolerance as well, and do not like the way this is set up. The worst part for me is that speed limit sign recognition is required to use Blue Cruise, and I have take the truck on several very long trips. The inaccuracy of speed limit recognition technology also contributes to this "adventure", when a sign that says 55 mph for truck towing trailers causes my truck to hit the brakes from the 70-ish I have set, all the way down to 55, even though it doesn't apply to me. Basically, if the system sees a rectangular sign with some large numbers on it, it "reads" that as the new speed limit and changes your speed. This is going to need to change....

So I read the little info buttons and found that the speed limit sign recognition is specifically about adjusting your speed to your tolerance. So I deactivated that and my blue cruise will stay where I set it now.

 

[Blitzen]

I’ve discovered a repeatable glitch with the Blue Cruise in my 2023 F-150 Lightning Lariat, it is reading signs other than speed limit signs and jumping around accordingly. Anyone else?

The first time this happened, I was on cruise at 35MPH going through a residential area when it suddenly jumped to 80MPH. And you know how fast these things move. I almost ran someone over. It has happened to me 9 times since and I finally figured it out. In PA we have these white state road signs, small - like 8” x 5” - that have the road number along the top, and then a mile marker in increments of 10. The Blue Cruise is scanning these signs and reacting as though they are speed limit signs. It works in the reverse too. I was on the highway, going 70, when it suddenly dropped me down to 30. I almost got rear ended. This has been going on since day one off the dealer’s lot.

Recently, it also took me across a very well marked double yellow line into oncoming traffic. I had to wrench the wheel with more force than I would have expected, to get back into my lane. The next day, it did the same, but crossed the white line on the shoulder and almost dumped me in a ditch. Same thing, had to use excessive force to wrench the car back into the lane.

Anyone else experiencing this? I can’t possibly be the only one.

 

[btreece]

I’ve discovered a repeatable glitch with the Blue Cruise in my 2023 F-150 Lightning Lariat, it is reading signs other than speed limit signs and jumping around accordingly. Anyone else?

The first time this happened, I was on cruise at 35MPH going through a residential area when it suddenly jumped to 80MPH. And you know how fast these things move. I almost ran someone over. It has happened to me 9 times since and I finally figured it out. In PA we have these white state road signs, small - like 8” x 5” - that have the road number along the top, and then a mile marker in increments of 10. The Blue Cruise is scanning these signs and reacting as though they are speed limit signs. It works in the reverse too. I was on the highway, going 70, when it suddenly dropped me down to 30. I almost got rear ended. This has been going on since day one off the dealer’s lot.

Recently, it also took me across a very well marked double yellow line into oncoming traffic. I had to wrench the wheel with more force than I would have expected, to get back into my lane. The next day, it did the same, but crossed the white line on the shoulder and almost dumped me in a ditch. Same thing, had to use excessive force to wrench the car back into the lane.

Anyone else experiencing this? I can’t possibly be the only one.

Blue Cruise has never crossed any solid or dotted lane lines for me. Are you sure it is saying you are hands-free when this is happening?

 

[Voltz]

You are referring to two distinct parts of the ADAS, maybe more. The speed limit sign reading can be turned off in setting. Yes, it uses OCR and doesn't seem to be backed up by a "Could this speed limit really be 80 or 85?" reference table. It has troubles with sixes and threes. I keep my thumb close to the dump/resume button. I spent a couple of months with it turned off. Then, I enabled it for highway driving and fight it around town.

The other part about lane departures and line crossing may be as above that you weren't in Blue Cruise Hands-Free. Or, even in a regular Blue Cruise zone or non-hands free BC had disengaged due to construction or unfamiliar territory, which may be indicated when you mentioned there was oncoming traffic. BCHF is not available on anything but limited access highways.

 

[Karlos]

Take OFF the "Read speed limit signs" in the Blue Cruise options. I had similar reactions & quite disturbing. You can leave the speed limit warning option on.

 

[ChasingCoral]

The first time this happened, I was on cruise at 35MPH going through a residential area when it suddenly jumped to 80MPH. And you know how fast these things move. I almost ran someone over. It has happened to me 9 times since and I finally figured it out. In PA we have these white state road signs, small - like 8” x 5” - that have the road number along the top, and then a mile marker in increments of 10. The Blue Cruise is scanning these signs and reacting as though they are speed limit signs. It works in the reverse too. I was on the highway, going 70, when it suddenly dropped me down to 30. I almost got rear ended. This has been going on since day one off the dealer’s lot.

I ran into something like this in Florida shortly after getting my Mach E two years ago. The system has improved but is still fallible.

@Voltz and others have addressed the fact that you can turn off Speed Sign recognition in the settings. Since this is repeatable, I suggest you first go through one of these areas and then send Ford a report from the truck using the report issue feature.

It would also be good if you can capture that on video to post here tagging @Ford Motor Company.

Recently, it also took me across a very well marked double yellow line into oncoming traffic. I had to wrench the wheel with more force than I would have expected, to get back into my lane. The next day, it did the same, but crossed the white line on the shoulder and almost dumped me in a ditch. Same thing, had to use excessive force to wrench the car back into the lane.

IIRC Blue Cruise Hands Free does not operate where there are double yellow lines. Did it try steering you there while you were in Blue Cruise Hands-on or were you not holding the wheel?

Please remember that these are ADAS (Advanced Driver Assistance Systems). The driver is still responsible for the operation of the vehicle.

 

[webbo85]

I’ve discovered a repeatable glitch with the Blue Cruise in my 2023 F-150 Lightning Lariat, it is reading signs other than speed limit signs and jumping around accordingly. Anyone else?

The first time this happened, I was on cruise at 35MPH going through a residential area when it suddenly jumped to 80MPH. And you know how fast these things move. I almost ran someone over. It has happened to me 9 times since and I finally figured it out. In PA we have these white state road signs, small - like 8” x 5” - that have the road number along the top, and then a mile marker in increments of 10. The Blue Cruise is scanning these signs and reacting as though they are speed limit signs. It works in the reverse too. I was on the highway, going 70, when it suddenly dropped me down to 30. I almost got rear ended. This has been going on since day one off the dealer’s lot.

Recently, it also took me across a very well marked double yellow line into oncoming traffic. I had to wrench the wheel with more force than I would have expected, to get back into my lane. The next day, it did the same, but crossed the white line on the shoulder and almost dumped me in a ditch. Same thing, had to use excessive force to wrench the car back into the lane.

Anyone else experiencing this? I can’t possibly be the only one.

Blitzen,
Where in PA are you? I'm an hour outside Philly, wondering if any roads around me.

 

[Blitzen]

Blue Cruise has never crossed any solid or dotted lane lines for me. Are you sure it is saying you are hands-free when this is happening?

I don't think I said I was in hands-free mode. It only goes into full on "hands-free" when in areas that support it. I'm new to Ford so I may be mixing up terminology. I have Blue Cruise. Hands-Free seems to be a subset of Blue Cruise (as it was originally explained to me). My subscription just expired overnight last night, so now I've learned it also has just plain old 'cruise control' as well. The speed issue does happen even in hands-free. The crossing the lines happened with "blue cruise" on, but not in "hands free" mode.

It's all moot now as I'm one of the many whose vehicle disconnected itself from Ford Pass and I am unable to reconnect to the vehicle and it would appear in order to re-up my Blue Cruise subscription, I need to do it through Ford Pass - and I can't, because, you know, it won't connect to the vehicle. I called Ford and the FP disconnect is a known issue with lightnings produced at the end of 2022 and they don't expect a fix until June. SO much doesn't work without FP. It's incredibly disappointing.

 

[J01001111E]

Sometimes my truck reads the speed limit on a frontage road when I'm on the freeway. I definitely have that setting turned off. I'll set the cruise speed, thank you very much.

I've had a great experience with Blue Cruise so far, even in stop & go traffic. I love it and I'll keep using it. The only "incident" I had was when someone cut me off hard. The truck reacted correctly. It quickly slowed down etc and asked me to take over. But I saw the cut-off coming before the truck did and I would have avoided the emergency maneuver.