While driving my truck (typically at moderate speeds - 20 - 30mph) it will suddenly reduce rpms to about 500 and the speed will drop to around 5 mph. Simultaneously with that occurring I will receive the following warning indicators "hill start assist not available" then another warning "hill descent control fault" then another warning "service advancetrac" then "see manual". this happens typically while accelerating and has occurred on city streets as well as while merging on a highway on ramp (bad situation). The resolution is to turn the car off an let it sit for a second then start it and drive slowly. This is widely documented across the internet with no identified cause and constitutes a severe safety hazard.

- San Anselmo, CA, USA

2015 Ford F-150 ecoboost, bought April 2018 with approx. 67,000 miles, currently at approx. 75,000 miles. I am reporting the sudden loss of accelerating power as the vehicle shudders and stalls both when moving with traffic or accelerating to enter or move with traffic. Multiple warning messages including the wrench light flash in the dash message area as the engine slows to idle with no ability to accelerate and comes to a stuttering stop. The first occurrence was three weeks ago and has happened no less than six time since - twice while accelerating onto the freeway (very busy, very fast traffic) and twice while crossing or turning in multi-lane intersections from stopped. Four of the six times resulted in my vehicle dying in and obstructing traffic with and me barely getting to the side of the road without an accident. I now shift to neutral to let momentum move the vehicle as I worm through traffic to the side of the road. Shutting off and restarting the engine clears or resets the message and sometimes "downhill assist not available" with the check engine light comes on. The check engine light has both stayed on or shut off on restart. I can then drive on the vehicle's own power, though the problem has repeated as soon as two minutes later, or not for days. I have not had to be towed and no accidents have occurred. The North Carolina consumer's council filed a lawsuit against Ford in 2015 which was settled with Ford offering an extended warranty only on the etb (electronic throttle body) of certain model vehicles - all with the ecoboost engine, and multiple customer service actions (csa's) that have since expired. A few minutes on the Ford forums online and it is apparent that this is a widespread problem with the ecoboost engine, and Ford has offered several bandaids, but none until after the etb has failed and lives been endangered.

- Barstow, CA, USA

2015 Ford F-150 ecoboost, bought April 2018 with approx. 67,000 miles, currently at approx. 75,000 miles. I am reporting the sudden loss of accelerating power as the vehicle shudders and stalls both when moving with traffic or accelerating to enter or move with traffic. Multiple warning messages including the wrench light flash in the dash message area as the engine slows to idle with no ability to accelerate and comes to a stuttering stop. The first occurrence was three weeks ago and has happened no less than six time since - twice while accelerating onto the freeway (very busy, very fast traffic) and twice while crossing or turning in multi-lane intersections from stopped. Four of the six times resulted in my vehicle dying in and obstructing traffic with and me barely getting to the side of the road without an accident. I now shift to neutral to let momentum move the vehicle as I worm through traffic to the side of the road. Shutting off and restarting the engine clears or resets the message and sometimes "downhill assist not available" with the check engine light comes on. The check engine light has both stayed on or shut off on restart. I can then drive on the vehicle's own power, though the problem has repeated as soon as two minutes later, or not for days. I have not had to be towed and no accidents have occurred. The North Carolina consumer's council filed a lawsuit against Ford in 2015 which was settled with Ford offering an extended warranty only on the etb (electronic throttle body) of certain model vehicles - all with the ecoboost engine, and multiple customer service actions (csa's) that have since expired. A few minutes on the Ford forums online and it is apparent that this is a widespread problem with the ecoboost engine, and Ford has offered several bandaids, but none until after the etb has failed and lives been endangered.

- Barstow, CA, USA

While driving there is rattling inside of the steering column that started a few months back. Now my alternator seems to not be working properly and the truck will only crank when I have all extras off (radio, ac, etc.) I also have to pump the gas for some reason for it to turn over completely. Otherwise it just dies. Never had a problem until last week when it wouldn't turn over at all. My battery is pulling 13.9 V and I have checked the connections. For a truck to be 3 years old and already need a new alternator appalls me. There is something else going on and the rattling in the steering column is somehow related to me having problems cranking the truck.

- Green Cove Springs, FL, USA

Throttle body problem at 36,999 miles. Went into "limp" mode with no warning while driving normally in a 45 mph street with busy traffic. I was very lucky it did not cause an accident.

- Dayton, OH, USA

2015 F150 2.7L ecoboost 31,908 miles... upon merging into traffic truck suddenly surges, followed by audible bang then abruptly loses all power "no driving conditions out of the ordinary, not under hard acceleration." Warning lights on the dash light up and I have no control of vehicle. Luckily I was fortunate to not have much traffic around me at the time and promptly coasted into a deserted parking lot to call my dealership. I am afraid to drive my truck now for fear of causing an accident due to mechanical/electrical failure, I don't want to die and don't want to put anyone it that position either. Dealer replaced the throttle body and says its ok to drive yet the throttle body they used as a replacement is no different then the one that failed how can that be safe? I'd like them to trust a truck that ceased all essential operations (brakes, acceleration, power steering) with a wife and kids in the vehicle during morning rush hour in the fourth largest city in the United States with speeding drivers who don't pay attention to the road in front of them, then we will talk. This is a huge safety concern and a known problem with many other Ford vehicles!!! fix it before someone gets hurt or dies as a result! do the right thing and hold the manufactures responsible its why we have the NHTSA. How is there not a massive recall with the eco boost engines in regards to the faulty throttle body, anything less is unacceptable. Does someone have to die first?

- Locust, NC, USA

Vehicle suddenly lost power while driving in traffic. Display slowed traction control malfunction, hill assist malfunction and engine trouble light illuminated. Loss of power steering and brakes. Once vehicle was shut off it then restarted a minute later as if nothing happened.

- Omaha, NE, USA

Brakes went out while driving. Brake fluid keeps disappearing. Brake fluid has leaked into the intake and caused massive amounts of smoke from the exhaust, the master cylinder failed at only 42K miles.

- St Louis, MO, USA

At times my 2015 F150 loses all power and go to a low power/ "limp mode" setting. Cautions received are (1) service advance trac, (2) hill descent control fault, (3) hill start assist not avail, (4) traaction control fault light. When this occurs, the vehicle goes to a very low forward power setting (<5mph), runs extremely rough to the point where the vehicle shakes aggressively. This problem is intermittent in nature, and yesterday was the final straw. This suddent oss of power occurred on a busy road and I nearly got rear ended. I immediately limped off the road and was able to get the vehicle towed to the dealership in castle rock, co. Currently I'm standing by for the mechanics diagnosis. Of note, I do see several similar write-ups of this problem on the NHTSA site regarding the 2015 F150. Ironically, a similar occurrence (ref. Nhstsa id#11083485) happened right up the road from me in castle rock, co (4/5/18). I hope Ford is aware of this extremely dangerous, recurring problem within its F150 fleet.

- Monument, CO, USA

Something attached to the crankshaft cracked and now the entire engine is being replaced

- Danville, CA, USA

The contact owns a 2015 Ford F-150. While driving unknown speeds, the vehicle stalled. When the vehicle was restarted, it operated normally. The failure occurred multiple times. The vehicle was taken to billion auto Ford of clear lake (3101 willow creek ct, clear lake, ia 50428, (641) 903-2299) where it was diagnosed that the throttle body and motor assembly failed. The vehicle was not repaired. The manufacturer was informed of the failure. The failure mileage was 84,129.

- Mason City, IA, USA

02/08/17nhtsa id: 10090975 tsb id: Ssm 46139 some 2015-2016 F-150 vehicles may experience intermittent loss of throttle pedal response, illuminated wrench, hill descent, airbag, anti lock brake system(ABS) and/or advanced trac warning indicators and/or P2122, P2123, P2124, P2125, P212communication number: Ssm 46829, date: 2017-09-20 category: 118500 electrical system: Integrated trailer brake control summary: Some 2015-2017 F-150 vehicles may experience intermittent loss of throttle pedal response, illuminated wrench, hill descent, airbag, anti lock brake system(ABS) and/or advanced trac warning indicators hill assist traction control loss of power no throttle or power steering I had similar issue last weekend in my 2015 F150 platinum ecoboost while pulling my boat on smooth level ground at 50 mph. No hill assist flashed first, then traction control, then flashed check engine warning. Engine stayed on but in idle only with no throttle control, lost power steering too. Got to side of road. Pumped throttle. No response. Turned off. Restarted and cranked little longer than normal and started but idling rough. Turned off again. Restarted. Smooth that time. Dropped in gear and drove 4 hours home in sport mode at 75 mph. No more issues last week till yesterday morning. Drove wife to dr on our 45 mile back country roads. Issue came back. This time ran rough when restarted. Then smoothed out. Did it 3 more times on way there. Which was 6 miles. On way home, reoccurred multiple times never getting it above 40 miles per hour before happening again. Called 3 tow companies, all were 2 hours out. Limped it home with flashers at 25 mph. Had towed today to diffee Ford in el reno. They said yes a tsb, but no Ford not covering the cost of repair 61,340 multiple law suits have been filed complaints on the throttle body defective needing replaced leaving driver stranded.

- Blanchard, OK, USA

Truck stalls due to throttle body actuator sticking. Vehicle becomes disabled/stalled and applies the brakes. Occurs without notice at any speed. Occurs on highway, city streets, and dirt roads. Requires throttle body replacement. Similar recalls did occur for the Ford throttle body for other models and years (e.g. 13N03 program). Dealer indicates it is not covered under powertrain warranty (although it should be) and costs $600 to replace.

- Reno, NV, USA

On freeway when lost acceleration. Indicator on dash said up hill assist not available and after clinking okay it then read service advance trac with the mechanic wrench showing. I'm on the shoulder of freeway, in park, and engine running rough as if on only two cylinders. I went ahead and put it back in drive and there was not throttle and trans would not kick in. Turned key off ready to call tow truck but went ahead and restarted the truck and issue cleared itself so we moved down the road. There is still an underlying issue, as I am told by my Ford service writer, the etb needs to be replaced and from what I see online this is not an uncommon issue with the etb and F150. This is a major concern and I was fortunate I was not towing my travel trailer at time which could have had major issue getting to side of freeway safely without power, if not rear ended. Shouldn't there be a recall because of safety? Ford is selling F150 eb as quality tow vehicle although this could get someone hurt or even worse. Don't get me wrong, I am very pleased with the F150 eco boost and its performance but this issue needs to be addressed by Ford! and not at customer expense!

- Vail, AZ, USA

Vehicle lost power and flashed 3 warning messages. 1) hill start assist not available. 2) see manual. 3) service advance trac. In addition the service engine light stays on. All of this happened while I was making a left turn in traffic almost causing a collision. This is the second time it has happened. After first time dealer was contacted and service department reported no problems found. Appointment currently scheduled to look at it again.

- Castle Rock, CO, USA

While driving my truck it began to sputter and then the engine stopped completely. I was just shy of a busy intersection and had no power. The error message was "driver hill assist not available" which did not correlate to the problem at all. The engine light was also illuminated. After getting the truck to the Ford service center they found the electronic throttle body (etb) had failed. I have 50,000 miles on the vehicle. The shop said that they normally do not stock many parts but this was one they always keep in stock. The technician claimed he had seen 20+ failures in the fast year. Research on line indicated that there is more than 60,000 complaints in Ford vehicles regarding the failure of this etb. There was action initiated by the nhts and a recall was waived provided that Ford extend warranty for this part. That did not happen in my case. My bill was $604.92 more importantly I could have lost power in the middle of that intersection or during a long drive home where no cell reception was possible. I was lucky to have broken down in a town with a Ford service center before my 3.5 hour trip back to denver. Fyi, I called Ford customer care and they said that I was not part of a "customer satisfaction program"... interesting choice of words, because I didn't feel like I was part of anything at Ford nor were they concerned about this issue. In fact, they claimed it was not a significant problem.

- Arvada, CO, USA

Sadly, we feel we have purchased a lemon occasionally engine or transmission squeals/grinds, if accelerate too quickly/power up.,and now, on cold days [temps low 40S & under] hear rubbing/grinding whirring at left front tire" gets louder when depress brake, and can feel in brake pedal. Sound occurs during slow forward speed 2-40 mph, on gravel driveway or paved road. Scheduled service today for noise; they were more interested in fixing recall item [locks - rpr time 3+hrs], if they had parts in stock. Recall srvc completed [under 1 hr], and "no noise was heard." I requested further look for cause of noise, service advisor said quick lane would check suspension?. 2 hrs later, nothing seen, nothing heard, nothing repaired. As I pulled away from dealership, having signed off on service, the truck immediately began making the noise [funny serv advsr didn't hear when he brought truck around?]. I drove less than 1/10 mile back to dealership, took the service advisor for ride; at which point he acknowledged he heard noise, but tried to assure me it's a 'tire issue.' My husband and I believe otherwise - this is not tire noise, the noise never crescendos or changes pitch with increase or decrease speed, on gravel or asphalt, and we have never felt 'tire noise' in brake pedal. This noise/friction merely ceases after you've driven a few minutes [for now]. service advisor assured me I was not doing any further damage to truck, continuing to drive it without resolution to the problem. I asked him if I needed new tires, he said indeed not, mine are in great shape [original tires] with 63,000 miles on them [but it's a tire issue"]. something's up [similar concerns have been raised in forums on the internet- along with dealer dismissal/failure to resolve. We want our truck repaired [resolution of these mechanical failures] while it's under warranty, or we want a new vehicle.

- Myersville, MD, USA

Throttle body failed causing the truck to enter limp mode several times while driving almost causing a crash by being rear ended by oncoming traffic when trying to enter a hwy or interstate hwy. Multiple electronic module failures since new. Truck is a death trap.

- Port Barre, LA, USA

2015 Ford F-150. Consumer writes in regards to several defects with vehicle. The consumer stated there were multiple instances where the vehicle stalled, the check engine light illuminated. The steering gear, steering shaft, steering wheel needed to be replaced. The consumer blew the horn and a whole was punctured in the steering wheel. The wrench light illuminated. There was a fluid leak from the rear left axle. The shutter grille actuator became unplugged.

- Grand Prairie, TX, USA

While driving on the highway at 75 mph the truck shuttered violently and the engine shut down. Immediately it flashed a warning that the "hill climb assist" malfunctioned followed immediately by a wrench symbol notifying that service was needed then another warning about the advance trac system then back to the hill climb assist symbol. All of this happening while the car behind me is almost sideways trying to avoid me. I eventually made it to the right shoulder of the highway. As I read the various warnings it said to refer to the owners manual with regards to the hill climb assist. I turned the ignition off, pulled out the owners manual only to find a description of the hill climb assist feature. After waiting for about 5 minutes I decided to turn on the ignition. The truck started without issue and I continued home cautiously in the far right lane.

- Castle Rock, CO, USA