2017 Tesla Model X acceleration problems

Filed May 5, 2024 · Acceleration, Driver assistance · CA

While driving CA-17, as is frequently the case, I had to disengage automatic steering several times to correct its poor lane keeping. Much to my surprise, the vehicle stopped maintaining speed, creating a dangerous situation with vehicles behind me as the uphill road caused the vehicle to rapidly decelerate the second I turned the wheel. After experimentation, I discovered that Tesla has completely removed cruise control capabilities from these vehicles unless you completely disable the FSD beta functionality, which makes this vehicle highly unsafe to drive in any environment where autosteer is inadequate, including CA-17. Further, this isn't just unsafe on weird highways. This poor decision on Tesla's part could very easily cause rear-end collisions on freeways. Nobody in their right minds would expect a vehicle to suddenly massively decelerate just because you correct its poor steering. This is just plain DANGEROUS. This so-called "Full Self Driving (Supervised)" version needs to be recalled immediately, and Tesla MUST be forced to make cruise control fallback available regardless of the FSD state. Until they do, it is fundamentally unsafe to allow Tesla vehicles to remain on public highways and freeways with FSD (Supervised) enabled.

Filed Feb 17, 2023 · Acceleration, Electrical · CA

Dashboard or driver screen suddenly goes black while driving (and at other times will freeze on a certain speed, despite slowing down, or breaking.) At this point, driver does not know what speed he, or she is traveling at, nor what gear. Response from Tesla is to reboot the car. However, these episodes while driving continue and are very dangerous. Tesla is pushing paying $2000 to get an infotainment upgrade to solve this safety issue which seems to be a defect in the car.

Filed Feb 3, 2023 · Acceleration, Driver assistance · TX

This issue most likely plagued our Model X during it's original factory warranty based on the class action, NTHSA inquiry, and NTHSA and Tesla recall for the same issue which affects Model X buil between 2016 and 201. These are the things we have personally experienced 12 times over our short ownership, 6 times these nearly caused accidents - this catastrophic malfunction has occurred (on average) once every 500 miles during our ownership: Primary driving instrument and safety info screen (small screen/driver dash screen) and larger infotainment screen BOTH: Freeze, “lock up” or “go blank” Turn black (an issue known by some drivers as “the black screen of death”) Fail to turn on Repeatedly reboot Display a “touchscreen unresponsive” message Stop working completely Otherwise malfunction These issues generally occurred at the worst possible times, most likely when the deficiently designed computer was over taxed (night, weather, traffic, cold - though it also occurred twice under basic conditions). Each time, it was absolutely disorienting and results in a hazard for driver, occupants, and people/property around the malfunctioning vehicle. Class action info - https://www.classaction.org/tesla-s-x-touchscreen-mcu-problems-lawsuits the federal safety agency investigation: the federal safety agency and Tesla Recall - https://www.classaction.org/media/tesla-touchscreen-recall-notice.pdf Tesla has failed to repair this issue over the past 6 months. I requested they repair, replace, or repurchase per my owner's rights. Tesla now refuses to repair and negligently states that I must pick up the faulty and unsafe vehicle. They are in breach of their warranty and recall obligations.

Filed Jan 19, 2023 · Acceleration, Brakes · NJ

Phantom breaking occurs predictably in the same spots along the NJ Garden State Parkway. Most certainly I have noticed it and can easily replicate it around the Toms River exit 80 in both south and north bound lanes. The vehicle will break suddenly and abruptly when enhanced autopilot or self-driving is engaged. It will come to a complete stop if allowed even when there is absolutely no other vehicles or obstacles in front of it which would justify breaking. It has happened during the day and even late at night when the road is void of vehicles. This same behavior also occurs further south on the GSP I believe around exit 50 but I can't recall with precision on that one.

Filed Sep 29, 2022 · Acceleration, Brakes · PA

Highly repeatable issue: driving on left lane of a highway going at high speed (60) with adaptive cruise control enabled (but *not* full self drive mode). Put on turn signal to merge into right lane. There was a car in the right lane directly next to me but I had not initiated the merge, was merely signaling my intent to merge. My car SLAMMED on the breaks (very dangerous as I was almost rear ended the first time by a 18 wheeler). Did some testing at a later date- if there is a car slightly ahead of me in the right lane, the car behaves normally (maintains speed) if there is a car in my blind spot, the car indicates there is someone in my blind spot but maintains speed. If I am driving in the left lane all three scenarios (slightly ahead, directly adjacent, in blind spot) the car maintains appropriate speed. It is only when car is directly adjacent when in left lane w/ right turn signal that car always now will slam on brakes. Very dangerous- Tesla has been made aware of the Issue 2x now- and had informed me that “it is beta software (?????!!!!!!) and to live with it.”

Filed Jul 18, 2022 · Acceleration, Brakes · CO

The vehicle brakes are aggressively applied at random times when traveling on the freeway. This only appears to happen when the vehicles TACC (Traffic Aware Cruise Control) is enabled. Thankfully I have not been rear ended yet. My family's safety is in danger when TACC is enabled. Not only am I concerned we could be rear ended, but I am concerned someone could think I am "brake checking" them and then proceed to act violently (road rage). There is a particular stretch of highway where this happens 100% of the time that would allow me to reproduce the occurrence on demand for investigative purposes.

Filed Mar 19, 2022 · Acceleration, Driver assistance · WA

At 1:10 pm on Wednesday, November 10, 2021 we were travelling SB on I-5 near Longview, WA. The day was clear and dry. We were in Lane 2 of a 3-lane stretch of interstate. There were no vehicles in either lane right next to us; a semi-truck was in Lane 1 (outside lane) several car lengths in front of us; a passenger car was 1-2 car lengths behind us in the same lane as us (Lane 2). No overpasses, trees, or any other discernable distractions were present. We were travelling at 70 mph on cruise control. With no warning, the car braked suddenly in an effort to bring the car to a full stop. Fortunately, the driver directly behind us was paying attention and was able to swerve into Lane 3 to avoid rear-ending us. I was able to bring my car into the Tesla location in Lynnwood, WA for service on November 12, 2021 to have the issue checked. While in for service, I did some research on the issue and found blogs dating to 2018 about "phantom braking"; I determined this described our situation. When I collected the car, the service tech said they were unable to replicate the issue and therefore, were not able to establish a problem to correct. I inquired if they knew about a phantom braking issue; they indicated that Telsa had heard of it and was working on a "fix" but there was no known timeline for the "fix". I have not used the cruise control feature in my car since 11/10/21 and will not because of the significant safety concern. Tesla need to be MADE to make this safety issue a priority to correct. If Musk's team can build a rocket and send it to space, they certainly can correct a cruise control issue.

Filed Feb 17, 2022 · Acceleration · MA

The car, while "autopilot is engaged" will slam on the brakes on the highway for no reason. It is extremely scary and happens frequently.

Filed Aug 9, 2021 · Acceleration, Electrical · OH

Tesla issued a recall for the mcu after I had the mcu replaced because it was failing. The screens in my car would go blank and I would have no idea how fast I was going while driving. The a/c wound shut off in the middle of the drive. I didn't have turn signals. These were all the reasons why the federal safety agency ask tesla to issue a recall, and finally tesla agreed to this recall. Tesla is however not reimbursing me for the replacement of the mcu. I have spent months trying to get Tesla to honor their recall. I would like to be reimbursed for this recalled mcu that I had to pay for myself as it was a major safety issue. I would appreciate you help.

Filed Jun 8, 2021 · Acceleration, Driver assistance · OH

Repeated violations of autopilot safety systems has forced Tesla to activate in cabin cameras to be used as an additional safety device for driver monitoring. Not all vehicles have in cabin cameras and should be installed for increased safety concerns