2018 TESLA MODEL 3 Complaints

Description of the Defect: While driving with Full Self-Driving (FSD) engaged, the vehicle's primary computer shuts down and reboots, causing a sudden loss of all safety features, including Blind Spot Monitoring, Lane Departure Warning, Forward Collision Warning, and the driving visualization. The cameras go black while the vehicle is in motion. The Trigger: The failure is triggered by high electrical load. If the Cabin Heater (HVAC) and Seat Heaters are active while FSD is fully computing, the 12V power supply to the computer drops below critical voltage, causing a "Turbo A" processor lockup and system crash. Evidence of Defect: Service Center diagnostics confirmed the specific error code APS_w169_TurboA_SCS_LKUP (Computer Crash) occurred at the exact same timestamp as VCLEFT_a302_blowerGeneralFault (HVAC Blower Failure). This proves a common-mode voltage drop affecting multiple critical systems simultaneously. Manufacturer Response: The manufacturer (Tesla) acknowledged the logs but refused to inspect the wiring harness or ground connections, instead recommending a replacement of the computer unit. However, the failure can be mitigated by unplugging external cameras to reduce load, proving the root cause is an insufficient power delivery design (Wiring/Grounding) rather than a component failure. The computer is running at full load with the newest FSD software and it can no longer keep up with additional loads. Safety Risk: This defect causes a sudden, uncommanded loss of driver assistance and situational awareness tools (cameras/visualization) while the vehicle is maneuvering in traffic. The vehicle’s power distribution system appears insufficient to support the electrical load of the software (FSD) and the hardware (HVAC) simultaneously.

2018 Tesla model 3 front chassis subframe welded nut to the chassis is come off now left side control arm keep getting loose

My 2018 Tesla Model 3 started squeaking at 36k miles at the end of 2023 (5 year old) I took to the Tesla service center where they quoted me $570. The squeaky control arm issue in Tesla is well known on the internet with may forums complaining about it. Not sure if there is a safety issue but wanted to report this incase there is a pending case regarding this issue. I was happy to pay for parts but the $570 seem excessive for a 5 year car that had 36k miles.

After downloading Tesla’s update (no. 2025.44.25.4) software my heater (with the window defrost functionality) in winter stopped operating. I made my update while at my nearest Tesla service compound (location verifiable per system location log) on 01/25/26 when that same day software began throwing HVAC error codes with blowing cold air, when previously my heat ran well. This is not coincidental; this is system design failure.

The front control arms are creaking and I’ve read that many of models built in 2018 have this problem as well. It is unknown if it is a safety concern or not.

The front and rear windshields of my Tesla Model 3 developed long cracks requiring full replacement. For over six months, I have been unable to complete these replacements due to repeated failures in the replacement process. The vehicle and damaged glass are available for inspection upon request. My insurance claim was filed with Esurance, and Safelite AutoGlass, Esurance’s designated auto glass provider, has handled all replacement attempts. During this period, three shipments of glass arrived damaged and two shipments were the incorrect glass for my vehicle, resulting in canceled or rescheduled appointments. Safelite has documentation of these failed attempts. Driving with cracked front and rear windshields puts my safety and the safety of others at risk. The damage impairs visibility, especially in rain or low-light conditions, and compromises windshield integrity, which is critical for vehicle structural support and proper airbag deployment. The rear windshield damage also raises concerns about sudden glass failure while driving. The issue has been reproduced and confirmed multiple times by Safelite AutoGlass, an independent service center. While waiting for service, I personally spoke with several other Tesla Model 3 owners at Safelite locations who reported similar experiences, including multiple failed appointments, incorrect glass, and in some cases incorrect installations requiring return visits. This suggests a broader, systemic issue rather than an isolated incident. The vehicle has been inspected multiple times by Safelite AutoGlass, and the issue is documented through Esurance claim records and follow-up complaints I submitted regarding the prolonged lack of resolution. Tesla has not directly inspected the vehicle. There were no warning lights or system alerts prior to the issue. The problem presented as visible cracks that appeared and progressively worsened, prompting replacement attempts beginning approximately six months ago.

Safety Restraint Warning appeared on a 50k miles Tesla Model 3. We are a used electric vehicle dealer in California. This warning has been appearing on parked vehicles repeatedly. Meaning, many of the Model 3's we have listed for sale (over 30 units for sale at any given time) will suddenly have a "Safety Restraint Warning" appear. Tesla is not taking responsibility for this. They always charge the customer. The airbag system is inoperable with this warning. It's a problem on EVERY Model 3 on the road between the year of 2017 to 2020.

I purchased this car new in 2018 and recently replaced the front lateral suspension arm due to worn bushings. During the process, I discovered that one of the 14 mm bolt threads on the right side of the suspension arm had a helicoil inserted. While removal was straightforward, reinstalling the bolt proved difficult. I spent several hours reattaching it to the new suspension arm, but did not apply full torque, as I was concerned about damaging the helicoil or stripping the thread. My main concern is that the factory has stripped the original thread and used a helicoil instead of replacing the affected part. Although the repair has held so far, I am unsure if this is a safe long-term solution, as the helicoil could fail while driving. I contacted Tesla, who advised me to visit their service center. At the Centinela location in Los Angeles, the supervisor informed me that, since the warranty has expired, they can only perform a visual inspection.

The front suspension began having grinding noises. This was especially pronounced during turning at low speeds. At 58k miles. Tesla charged for having a tech ride along. They then did a front suspension investigation and said the following parts all were damaged and required replacement. Lower Compliance Links Lower front suspension links Lateral links Subframe assembly It would be consistent with the following recall on the bolt which attaches the lateral link to the subframe [XXX] The make, model and manufacture time align with the recall. Tesla did not provide the damaged parts. Cost was in 4982.91 INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

Vehicle is 7 years old with 107,000 miles. I received a warning regarding low brake fluid with instructions not to drive the vehicle. Dealer is advising all brake lines are rusted out and need replacement. Rusted lines are apparently causing the brake fluid to leak. I've never heard of any vehicle, let alone a 7 year old vehicle, needing all brake lines replaced. After researching online, my 2018 Tesla Model 3 is not the only Tesla Model 3 with this issue. Specifically, it appears some early 2018 Model 3s have suffered this issue. I believe this is a design defect and safety issue, and that Tesla should be voluntarily repairing affected vehicles with this known issue, since it is a design/safety issue.