Active safety recall (the federal safety agency Campaign 21V‑035 / Tesla TSB SB-21-21-001) for touchscreen and Media Control Unit (MCU) failure remains unperformed due to service refusal and unlawful conditioning at the Tesla Authorized Service Center in [XXX]. Following a 6-week delay, an appointment was kept on XXX. After holding the vehicle for 4 hours, service staff explicitly conditioned execution of the mandatory safety recall upon authorizing ~$3,000 in unrelated retail repairs. When declined, the Service Manager publicly disparaged the vehicle in a crowded waiting room, falsely claimed "there is no recall," and threatened that "if we do the recall, the car may not operate or be drivable afterward," flatly refusing service. As a 40-year automotive industry veteran (former Service Manager), I recognize this as an egregious attempt to leverage mandatory safety recall work for retail service revenue, violating federal compliance obligations under 49 U.S.C. Chapter 301. The unrepaired MCU failure creates an acute safety hazard, disabling critical functions including defrosters, climate controls, and rear-view display visibility. Logistics & Scope: Consumer refuses return to Franklin, TN facility due to hostility/obstruction. Requesting the federal safety agency record this non-compliance violation and compel Tesla Corporate to coordinate mobile service or transport to an alternative regional facility with loaner coverage, with full restoration of vehicle operability at zero cost to the owner. INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)
2014 Tesla Model S driver assistance problems
20 complaints (5% of all complaints for this car). Typical mileage when it fails: 72,547. 2 crashes reported.
- owner complaints
- 20
- of this car's complaints
- 5%
- typical mileage
- 72,547
- crashes
- 2
- recalls
- 0
Which part fails
- Adaptive cruise control7
- Warnings3
- Automatic emergency braking2
- Rearview system braking1
- Blind spot detection1
- Assist1
At what mileage
Complaints by mileage at the time of the problem.
Tesla Model S driver assistance problems in other years
Specific symptoms reported on the 2014 Tesla Model S driver assistance
Phrases found in the owners' own descriptions, so one complaint can mention several symptoms.
Related recalls
No recalls on record for this model year.
Related investigations
Loss of rearview camera
On November 20, 2020, the Office of Defects Investigation (ODI) opened Engineering Analysis (EA) 20-003 to investigate incidents of media control unit (MCU) failures resulting in loss of rearview camera in model year (MY) 2012-18 Tesla Model S and model year (MY) 2016-2018 Tesla Model X vehicles equipped with the NVIDIA Tegra 3 processor with an integrated 8GB eMMC NAND flash memory device. During its investigation, ODI learned that the expected usage life rating for the 8GB eMMC NAND flash memory device is approximately 3,000 “P/E” or Program-Erase cycles, after which the eMMC NAND flash memory device would become fully consumed and no longer be operational, leading to a failure of the media control unit (MCU). At a daily cycle usage rate of 1.4 per block, accumulation of 3,000 P/E cycles would take only 5-6 years. Historically, the expected life of a vehicle generally far exceeds 5-6 years of service. ODI believes that a 5- or 6-year life expectancy for a component integral to providing the driver with safety functions is insufficient. During our review of the data, Tesla provided confirmation that all units will inevitably fail given the memory device’s finite storage capacity. Tesla provided its own statistical model showing the number of projected weekly MCU repairs from 2020 to 2028, estimating that replacement rates for MCU failures will peak in early 2022 and gradually decline until (near) full part turnover has been accomplished in 2028. According to Tesla, for subject vehicles equipped with the NVIDIA Tegra 3 processor with an integrated 8GB eMMC NAND flash memory device, the eMMC NAND cell hardware will fail when reaching lifetime wear, for which the eMMC controller has no available memory blocks necessary to recover. With this failure mode, the only recovery available is a replacement of the eMMC device, achieved by physical part replacement of either the MCU assembly or visual control module subcomponent. Tesla provided information concerning the effects of MCU failure on vehicle function, which include in loss of rearview/backup camera and loss of HVAC (defogging and defrosting) setting controls (if the HVAC status was OFF status prior to failure). The failure also affects the Autopilot advanced driver assistance system (ADAS) and turn signal functionality due to the possible loss of audible chimes, driver sensing, and alerts associated with these vehicle functions. Based on this analysis, ODI issued a Recall Request Letter (RRL) on January 13, 2021. The RRL was based on ODI’s tentative conclusion that a defect related to motor vehicle safety exists in the subject vehicles because the eMMC NAND flash devices have a finite lifespan based upon the number of program/erase (P/E) cycles, after which the MCU fails due to memory wear-out, which constitutes a premature failure of safety-critical part. Tesla responded to the Recall Request Letter (RRL) on January 27, 2021, and disputed the tentative findings of the RRL. Nevertheless, on January 29, 2021, Tesla filed a safety recall (21V‑035), recalling (MY) 2012-2018 Tesla Model S and (MY) 2016-2018 Model X vehicles with a center display equipped with a NVIDIA Tegra 3 processor and an 8GB eMMC NAND flash memory device. In this recall, Tesla is providing a free hardware remedy in addition to the over-the-air (“OTA”) firmware updates that the company had previously implemented. the federal safety agency will continue to monitor the issue as part of its ordinary processes for overseeing the effectiveness of recalls. However, based on available information, at this time, Tesla’s recall appears to address the unreasonable risk to motor safety presented by the premature failure of the component. Accordingly, the investigation is closed. To review the ODI reports cited in the Closing Resume ODI Report Identification Number document, go to
EA20003
Loss of rearview camera
On June 22, 2020, the Office of Defects Investigations (ODI) opened Preliminary Evaluation PE20-010 to investigate incidents of media control unit (MCU) failures resulting in loss of rearview camera in model year (MY) 2012-2015 Tesla Model S vehicles equipped with the NVIDIA Tegra 3 processor with an integrated 8GB eMMC NAND flash memory device. EMMC NAND flash devices have a finite lifespan based upon the number of program/erase (P/E) cycles. The subject MCU allegedly fails prematurely due to memory wear-out of the eMMC NAND flash. Tesla used the same MCU with the Tegra 3 processor in approximately 159 thousand 2012-2018 Model S and 2016-2018 Model X vehicles built by Tesla through early-2018. In response to ODI's Information Request (IR) for PE20-010, Tesla provided ODI with 2,399 complaints and field reports, 7,777 warranty claims, and 4,746 non-warranty claims related to MCU replacements. The data show failure rates over 30 percent in certain build months and accelerating failure trends after 3 to 4 years-in-service.According to Tesla, for subject vehicles equipped with the NVIDIA Tegra 3 processor with an integrated 8GB eMMC NAND flash memory device, the eMMC NAND cell hardware can fail when reaching lifetime wear, for which the eMMC controller has no available blocks to recover. With this failure mode, the only recovery available is a replacement of the eMMC device, achieved by physical part replacement of either the MCU assembly or visual control module subcomponent. Tesla provided the effects of MCU failure on vehicle function which result in loss of rearview/backup camera, loss of HVAC (defogging) setting controls (if the HVAC status was OFF status prior to failure.) There is also an impact on the advanced driver assistance support (ADAS) Autopilot system, and turn signal functionality due to the possible loss of audible chimes, driver sensing, and alerts associated with these vehicle functions. There are precedents for addressing defects that result in loss of either backup camera, defogging, or turn signal functions under safety recalls.Tesla has implemented certain Over-The-Air or OTA updates to subject vehicles to mitigate the effects of MCU failure. These updates include firmware changes to reduce memory usage of the subject memory card, improve eMMC error correction and storage management strategies, changing the control logic for turn signal activation, and defaulting the HVAC system to Auto (71.6F) for drives after MCU failure to address windshield defogging. Tesla indicated that the MCU failures are likely to continue to occur in subject vehicles as vehicles continue to operate and use available memory in the 8GB eMMC NAND flash memory until 100% of units have failed. This investigation has been upgraded to an Engineering Analysis (EA20-003). The VOQs associated with the upgrade of this investigation are identified in the attachment to this resume.
PE20010
Automatic vehicle control systems
On May 7, 2016, a 2015 Tesla Model S collided with a tractor trailer crossing an uncontrolled intersection on a highway west of Williston, Florida, resulting in fatal injuries to the Tesla driver.Data obtained from the Model S indicated that:1) the Tesla was being operated in Autopilot mode at the time of the collision; 2) the Automatic Emergency Braking (AEB) system did not provide any warning or automated braking for the collision event; and 3) the driver took no braking, steering or other actions to avoid the collision.On June 28, 2016, the federal safety agency opened PE16-007 to ?examine the design and performance of any automated driving systems in use at the time of the crash.?The Office of Defects Investigation (ODI) analyzed the following subjects as part of the federal safety agency?s examination of the design and performance of Tesla?s Autopilot system:1) Automatic Emergency Braking (AEB) system design and performance in the subject Tesla and peer vehicles; 2) human-machine interface issues related to Autopilot operating mode; 3) data from crash incidents related to Tesla?s Autopilot and AEB systems; and 4) changes Tesla has implemented in the Autopilot and AEB systems.the federal safety agency?s examination did not identify any defects in the design or performance of the AEB or Autopilotsystems of the subject vehicles nor any incidents in which the systems did not perform as designed.AEB systems used in the automotive industry through MY 2016 are rear-end collision avoidance technologies that are not designed to reliably perform in all crash modes, including crossing path collisions.The Autopilot system is an Advanced Driver Assistance System (ADAS) that requires the continual and full attention of the driver to monitor the traffic environment and be prepared to take action to avoid crashes.Tesla's design included a hands-on the steering wheel system for monitoring driver engagement.That system has been updated to further reinforce the need for driver engagement through a strike out strategy.Drivers that do not respond to visual cues in the driver monitoring system alerts may strike out and lose Autopilot function for the remainder of the drive cycle.A safety-related defect trend has not been identified at this time and further examination of this issue does not appear to be warranted.Accordingly, this investigation is closed.The closing of this investigation does not constitute a finding by the federal safety agency that no safety-related defect exists.The agency will monitor the issue and reserves the right to take future action if warranted by the circumstances.For more information about the analysis, see the attached report.
PE16007
What 2014 Tesla Model S owners say
Most recent owner complaints, unedited.
The contact owns a 2014 Tesla Model S. The contact stated while driving at various speeds, the digital screen intermittently blacked out and several safety features were inoperable. No warning light was illuminated. The vehicle was taken to a local dealer, where it was diagnosed and determined that the resort block remained at 90%, and the same EMMC ID that should have been covered under the federal safety agency Campaign Number: 21V035000 (Back Over Prevention, Visibility, Exterior Lighting); however, the VIN was not included. The vehicle was not repaired. The manufacturer was made aware of the failure. The failure mileage was approximately 100,000.
I was driving my car on the freeway on cruise control, when there was a sudden/automatic violent break of 65 MPH to 0 MPH. There was no car in front of me, and there was nothing above my car (no direction sign, no bridge, no FASTRAK billboard, nothing). This was a "phantom break" and it was violent and sudden. Tesla needs to fix this!
My car has severe phantom breaking due to adaptive cruise control. When I use my Tesla's cruise control on the freeway, on a complete flat straight away that has no vehicle in front of me, no sign/bridge in front of me, and no items/object in front of me, my vehicle while randomly/violently slam on the break violently hurling me and all passengers in my vehicle forward. This is even more dangerous when there are vehicles being me in close proximity who could easily could have rear ended me all those times. I am forced to not use my cruise control due to these dangerous conditions.
Have experienced phantom braking at high speeds which could cause a rear end collision involving the vehicle or vehicles behind me. The phantom braking occurs about once per 500 to 750 miles and always occurs while traveling on the freeway at 60 to 70 mph. Approximately 80% of the time, it occurs at exactly the same place just before a large freeway sign. The occurrences are regardless of surrounding traffic. Sometimes it occurs with many other cars (at safe distance from me), sometimes with a few cars around me and sometimes with no cars within 100 yards in any direction. This one location is located in mid-California, at the north end of Ventura, on US 101 (freeway) northbound about 200 yards south of the Highway 33 (Ojai) cutoff.
The autopilot will apply the brakes in what is basically a panic stop any time you are decending from a hill and there is an overpass crossing the roadway. It happens to me on a particular stretch of the freeway almost every single time, and has happened multiple times. Each and every time it occurs it is as the vehicle is decending from a rise and there is an overpass ahead. For some reason the vehicle detects the overpass as an obstruction and slams the brakes. This has happened at least half a dozen times. Fortunately there was never a car following me very closely. I make it a point when I use the auto pilot to be ready to take over at a moment's notice whenever there is an overpass ahead. The vehicle did this with the OLD (original MCS) and the NEW one Tesla just installed.
The contact owns a 2014 Tesla Model S. The contact received notification of the federal safety agency Campaign Number: 21V035000 (Back Over Prevention, Visibility, Exterior Lighting) however, the part to the recall repair was unavailable. The contact took the vehicle to a local dealer and it was confirmed that the part was not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The contact stated she was unable to start the vehicle and the battery was replaced. The manufacturer had not been made aware of the failure. Parts distribution disconnect. The failure mileage was unknown.
When using Autopilot / TAC cruise control the vehicle sometimes applies the brakes for no reason.
I would experience multiple black outs on the technology system for the vehicle. They have not replaced the eMMC which is under recall
We have owned this car for a couple of months. Today, when I pulled into a parking spot at my office, the car accelerated quickly as soon as I made the turn to get into the parking spot. It jumped the curb and I barely missed hitting the office building. My feet were not on the gas pedal, the car did this on its own. None of the sensors went off to warn me of the curb like it normally does too. You can see from the skid marks how hard I had to slam on the brakes. Car damaged on front, assuming the windshield wiper fluid line was also cut with the fluid on the ground. Pictures attached.
Questions about the 2014 Tesla Model S driver assistance
Does the 2014 Tesla Model S have driver assistance problems?
Owners have filed 20 complaints about the driver assistance of the 2014 Tesla Model S, 5% of all its complaints.
At what mileage do 2014 Tesla Model S driver assistance problems start?
The typical (median) mileage in owner complaints is 72,547 miles.
Was there a recall on the 2014 Tesla Model S driver assistance?
There is no recall for this problem on this model year.
What year does the Tesla Model S have the most driver assistance problems?
The Tesla Model S model years with the most driver assistance complaints are 2017 (101 complaints), 2016 (78 complaints) and 2015 (71 complaints).
Other 2014 Tesla Model S problems
Electrical 134Suspension 90Body 27Lights 27Steering 27Transmission 27Fuel system 24Acceleration 22Visibility 18Airbags 13Engine 12Brakes 10Wheels 6Locks 4Seat belts 2Seats 1
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