Truck accelerated from stop and rear ended car in front.

[brewski]

I have had this happen to me while having Blue Cruise on and in stop and go traffic. There was an instance where the truck accelerated with a large 18-wheeler in front of me. It was like the system suddenly didn't see the truck in front of me and decided to accelerate. Thankfully I had enough distance to brake in time.

I have learned to not trust this truck's Adaptive Cruise Crontrol in stop-and-go traffic. My previous vehicle was a BMW with the Traffic Assist and it did much much better in traffic situation.

Having BC on in stop and go traffic is not unlike an airplane autolanding...the whole time you should be on edge waiting for it to eF up.
I'm enjoying the latest BC, but I use it at hwy speed and generally kick it off if the traffic becomes stop & go as I can do that better.

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[Altivec]

There are just too many variables into play to determine a reason why this happened. Were al

I posted the same issue over a year ago. I backed into a parking spot. When I returned and started the truck I was instantly 25 ft or so out in the lot before I could hit the brakes. I don't even recall if I touched the pedal AND at that time I never used one pedal driving. All I remember is starting the car and frantically going for the brake pedal. It has never happened again. Thank God nobody was walking in front of my truck. This has never happened since. You will see tons of folks explaining what you did "wrong" BUT, @Ford Motor Company please take notice, I think there's a glitch in the software...
@swngdncr I am glad everyone is fine.

WOE... I just want to clarify what you are saying here. I avoid one pedal drive except the odd occasion like a long traffic jam. I heard these types of stories, so I thought, if I stay away from it, I would be okay. But from what you are saying, that may not be the case. So you are saying when this incident occurred "you never used one pedal drive" meaning your truck was in normal 2pd mode. You then said when you started the truck it instantly bolted 25ft. I know in order for me to start my truck I need to put my foot on the brakes, I also need to put the brakes on to put it in drive. Are you saying, it jumped 25 ft without putting it in gear and that it completely ignored your foot on the brake when you pushed start?

 

[strmwzrd]

There are just too many variables into play to determine a reason why this happened. Were al

WOE... I just want to clarify what you are saying here. I avoid one pedal drive except the odd occasion like a long traffic jam. I heard these types of stories, so I thought, if I stay away from it, I would be okay. But from what you are saying, that may not be the case. So you are saying when this incident occurred "you never used one pedal drive" meaning your truck was in normal 2pd mode. You then said when you started the truck it instantly bolted 25ft. I know in order for me to start my truck I need to put my foot on the brakes, I also need to put the brakes on to put it in drive. Are you saying, it jumped 25 ft without putting it in gear and that it completely ignored your foot on the brake when you pushed start?

I started the truck with my foot on the brake (not in one pedal drive mode) and once I moved to the pedal I don't recall then or now if I got my foot to the pedal BUT I know the truck lunged as if floored and I know I did not floor the truck pedal. In fact what I recall is essentially frantically going for the brakes! It hasn't happened since.

Just yesterday my truck turned the passenger side heat to high automatically while I was driving to town...

 

[flyct]

I started the truck with my foot on the brake (not in one pedal drive mode) and once I moved to the pedal I don't recall then or now if I got my foot to the pedal BUT I know the truck lunged as if floored and I know I did not floor the truck pedal. In fact what I recall is essentially frantically going for the brakes! It hasn't happened since.

Just yesterday my truck turned the passenger side heat to high automatically while I was driving to town...

Strange things are known to happen when the 12v battery starts to fail. If your truck is over 2 years old it’s something to check. Batteries are warranted on the 3 yr/36k basic warranty.

 

[strmwzrd]

Strange things are known to happen when the 12v battery starts to fail. If your truck is over 2 years old it’s something to check. Batteries are warranted on the 3 yr/36k basic warranty.

I blamed the climate issue on the frunk lock update... I am now at 2 years and 30K and will be at the dealership tomorrow. I'll have them check it the battery. Thanks.

 

[NCevGuyF150]

I also posted this to the Reddit group, but will cross post here as I can use any and all information that others can share. I was stopped in traffic on a 4 lane road. I'm using one pedal mode, so my foot is not on the break. All of a sudden, the truck takes off, rapidly. I slam on the brakes, but not in time to keep from rear ending the tacoma in front of me. My husband says he has had the truck take off like this when he accidentally hits the resume button on the steering wheel with his arm. I don't recall this ever happening to me. Anyone ever experience anything like this? Will they be able to download any data from the truck that will explain what happened? Shouldn't the truck have recognized there was an obstacle and either not moved or stopped on its own? Again, appreciate any information or advice that would be helpful. BTW, it just updated to bluecruise 1.4 2 days ago.

Yes, I have had this to happen on my 22 lariat when I have accidentally hit the resume button on the cruise control

 

[Heliian]

pressing the brake pedal t

There should be a way to turn regen off then those who are confused by the system can have their basic brakes.

 

[jimfigler]

I posted the same issue over a year ago. I backed into a parking spot. When I returned and started the truck I was instantly 25 ft or so out in the lot before I could hit the brakes. I don't even recall if I touched the pedal AND at that time I never used one pedal driving. All I remember is starting the car and frantically going for the brake pedal. It has never happened again. Thank God nobody was walking in front of my truck. This has never happened since. You will see tons of folks explaining what you did "wrong" BUT, @Ford Motor Company please take notice, I think there's a glitch in the software...
@swngdncr I am glad everyone is fine.

Your foot is on the brake when you start the truck and put it into gear isn't it?

 

[tls]

Not just 'on" the brake (what we'd call "covering" the brake on a motorcycle) but actively pressing it down towards the floor, right? When starting the truck, when putting it in gear, when stopped with the gear selector in "Drive"?

The auto-hold feature in particular makes it easy to mess this up. And with the acceleration of our trucks from low speed or a stop - accidentally finding the gas instead of the brake when you weren't depressing either pedal can be disastrous. And possibly something you'll never realize you did (as almost happened to me).

 

[TaxmanHog]

I've moved several posts from this thread that drifted off Carla's original post concern "why did her Lightning unexpectedly launch forward from a stopped position while in traffic.

The side discussion about friction braking, slowing, regenerative-braking and when brake lamps illuminate have been moved to a new thread please take further discussion on that matter here:

Debate regarding braking, regen, and brake light illumination.

Please leave this thread for supplemental observations on the topic of post #1.

We all want to know the outcome of any findings as to why this happened.

 

[strmwzrd]

Your foot is on the brake when you start the truck and put it into gear isn't it?

Yes. AND either the second I moved off the brake or first touched the pedal it moved as if floored. Not a little extra pedal but as if floored.

 

[daibt6]

So sorry to hear about this accident. A similar event happened to me in month one of owning my 24 flash. I was on highway slowing down to a crawl speed when all of a sudden the car in front came to a complete stop. I slowed down while using one peddle braking when all of a sudden, the truck lurched forward and hit the truck in front of me. Later that week I tried replicating the lurch by pressing both gas and brake at same time. This can be done but it didn’t feel like the sudden lurch I experienced in the accident. A couple months later I noticed how easy it was for my left hand to accidentally click the cruise button while just holding the steering wheel. I tried replicating the lurch with cruise on at same speed as during accident and bammo, it felt the same. The cruise button needs to be moved off the steering wheel immediately because it can inadvertently get activated and cause forward movement. I love so many things about having a full size truck with ev power plant, but the current cruises controls are poorly located. Do you recall how you were holding steering wheel?

 

[Dan's Lightning]

Pre-collision assist does not activate until speeds are above 3 mph. It doesn’t automatically apply the brakes unless it detects an imminent collision. The OP’s situation was likely such that there was no data indicating an imminent collision in time to stop the collision.

The vehicle can fail to recognize potential obstacles if there are any obstructions on the windshield in the area of the rear view mirror, where the camera is located. This can be dirt, cracks, etc.

It can also fail to recognize obstacles if those obstacles are too close. This is true for the radar, the camera, and the sonar.

It’s likely that whatever caused the acceleration didn’t bring the speed up beyond 3 mph at all and certainly not for very long. A 3 mph speed over 1 second moves the vehicle about 4.5 feet. In 2 seconds, it’s almost 9 feet.

Hmmmm..
First few months I had my Lariat I was on a trip and charging at DC Fast charger,
Unplugged, excited to leave i shifted into Drive instead of Reverse and I shoulder check and hit the accelerator to back up! The Lightning locked up instantly saving me from smashing the charger posts!

I was in shock, couldn't figure out what was happening then I see I was in Drive trying to reverse! Truck saved the day.

I had another close call parking in a tight airbnb garage, got to close to a water valve and truck locked up half an inch before I hit the water valve!

Another time it saved my life, was backing out from a drive onto a street very late at night,
Truck locks up! I was startled and confused, then I see this Tesla that was zipping past up the road just saw the back of the Tesla up the road, they were flying! If I had backed out it would of been a massacre.

Another time I was entering a McDonald's parking lot quickly from traffic, a pedestrian was hidden that I didn't see and the lightning suddenly swerved and sped up into the parking lot! I panicked and hit the brakes! Then I saw the pedestrian looking at me in shock... Lightning saved the day.

 

[HisSvt2]

OP sorry that happened however it happened.

I have driven my two Chevy Bolt EVs my wife’s Mach E and my lightning exclusively in one pedal mode and nothing else since 2021 to now and have never had one pedal fail not once .

FYI you should be covering the brake regardless of drive mode.

 

[glean]

I'm pretty sure this is an object detection issue. Just yesterday was on the highway. Hands off steering wheel, feet far away from pedals.

Was going through a tunnel and the car in front of me started to slow down. Truck did not detect and acted like there was plenty of room in front of it. I was able to hit the brakes in time.

This has happened to me a few times. I treat BC as an opportunity to watch everything going on on the road, not to chill (unfortunately).

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