FSD HW3 v12.6.4 nightmare.

Few-Necessary6481 | 2025-12-28 18:35 | 20 views

My FSD HW3 on my 2019 model 3 broke the law 4 times in 20 minutes/18 kms and almost caused a massive accident. Before i explain what happened i know there is HW4 and a newer version with enhanced features and probably better desion making but that dosent excuse the fact that my tesla model 3 broke the law 3 times in 20 minutes on HW3 and almost caused a highmare of a accident. First time the light turned yellow and my car started slowing down but not fast enough and drove past the white line about 25% into the intersection forcing me to take control over the car and keep going though the red light since there were cars behind me and stopped at the light since it turned red and i would of been in the way of other cars coming with a green light. Second time well it happened twice but it was the same scenario it decided to stop ahead of the white line at two intersections perfectly in the way of the cross walk two times which would have forced people to walk around the cross walk in front of my car. 3rd time was the worst there was traffic oncoming at 100km/h on the highway and it did stopped at the stop sign to cross but completely ignored the oncoming car and went just in time to cause a massive accident forcing me to take over the car again quickly and slam the brakes. Im so glad i only bought a 1 month subscription to try it out. I dont even know how this version/hardware of fsd even past testing and is even allowed. Note : i am on the highest version available for my year and model/hardware version so there's Nothing i can to to update it and i know there is better/newer hardware and better version but that still doesn't excuse the fact that it nearly caused a massive accident and broke the law. Anyways i figure i just post this because how impressive it is having broken the law 4 times in 20 minutes/18 kms and elon musk wants people to pay 100$/month or 10,000$ for life for this version/hardware of fsd 😂😂😂.

Comments (26)

Phonafied 2025-12-28 18:39

Correction: FSD didn’t break the law, you did.

B1A23 2025-12-28 18:44

I’m currently on a road trip on HW3 12.6.4 and it’s done 99.9% of the drive nearly flawlessly. Over 800 miles so far.

Few-Necessary6481 2025-12-28 18:44

Well you are 100% right but that ain't no excuse for me having to take control of the car 3 times in 20 minutes to prevent it from breaking the law. Like im pretty sure that doesn't qualify as full self driving if i got to take control of the car alot but maybe im worng.

Few-Necessary6481 2025-12-28 18:45

Dam thats impressive. Must just be a skill issue or something on my part.

Phonafied 2025-12-28 18:49

Self driving doesn’t mean it can follow the local driving laws. It just means it can drive on a road on its own. It’s only at L2 autonomy. This is essentially beta software that requires more training before it learns how to properly obey all traffic laws in your local region.

Glum_Perception_1077 2025-12-28 18:57

What setting were you on? Like hurry, ect?

Few-Necessary6481 2025-12-28 19:03

I believe it was standard. I guess i could change it to chill mode and see if it makes a difference next time i drive and see if it is better. Ill try it out to see if it is any better but well see.

NotAnAIOrAmI 2025-12-28 19:04

Your Tesla didn't break the law, it's a machine, that's not possible. YOU broke the law, operating a machine that took those actions. You are liable for anything the machine does in FSD because you are the responsible operator. These things aren't ready to use on public roads around involuntary beta testers (the rest of us), and I don't understand why some people are so eager to pay A LOT of money for the privilege of rolling the dice with their and other people's lives.

Few-Necessary6481 2025-12-28 19:05

Well i guess that does make sense. Only one way to find out

[deleted] 2025-12-28 19:07

[deleted]

Omacrontron 2025-12-28 19:51

Sounds like you broke the law 4 times and almost caused an accident since you are still responsible for the vehicle hahah

Itchy_Platypus4085 2025-12-28 19:52

I just used FSD on a 900 mile road trip. Is it perfect? Hell no. But you need to take over when its doing something like this. I only had about 2 disengaged instances. One it literally would have rear ended someone turning from a main street into a parking lot. They were dicking around and entering very slow.

AKADAP 2025-12-28 20:26

HW3 has not had a FSD update since February. It is also looking like HW4 has hit a local maximum (variants of older versions of 14 are showing up in newer software. See here: [https://www.teslafi.com/firmware.php](https://www.teslafi.com/firmware.php) '14.2.2.1, then 13.2.9, then 14.1.4.) Looks like FSD might need another architecture change to make progress.

LordFluffyPotato 2025-12-28 20:51

Highway versus city is a very big difference.

B1A23 2025-12-28 20:52

That’s combined highway driving from NC to FL and doing all the driving in central FL with the usual insane drivers. It handles it fine.

bostonfern123 2025-12-29 06:50

Not all HW3 have the same hardware. The latest HW3 has better hardware than the early HW3, and it shows on the quality of FSD. What year is your model 3?

bostonfern123 2025-12-29 06:52

It will be more interesting if we know the year is of your model 3?

bostonfern123 2025-12-29 06:52

What year is your model 3?

B1A23 2025-12-29 12:05

2022.

Itchy_Platypus4085 2025-12-29 12:38

2023

[deleted] 2025-12-29 20:17

[deleted]

B1A23 2025-12-29 20:36

It’s not. HW3 is HW3. There may be slight hardware iterations as things are streamlined but the chips are the same.

bostonfern123 2025-12-30 02:50

https://preview.redd.it/h2mqsc0g99ag1.png?width=774&format=png&auto=webp&s=53cde7292468a25729908d693f79920c1896b44a The above is what I got from Gemini. You can see the difference of older HW3 and newer HW3.

bostonfern123 2025-12-30 02:52

Does it have AMD Ryzen?

B1A23 2025-12-30 02:54

Yes but the MCU chip doesn’t have anything to do with the FSD chips. That’s an entirely different board. AMD Ryzen concerns the display and graphics.

bostonfern123 2025-12-30 03:40

Here is the Gemini'\[s answer: In 2025, there is a clear performance gap within the Hardware 3 (HW3) family. **Older HW3 vehicles typically deliver a worse FSD experience than newer HW3 vehicles**, primarily due to the secondary computer (the infotainment processor) and minor camera refinements. This link explains in details. [https://share.google/aimode/YekJkv6vbImYceXCF](https://share.google/aimode/YekJkv6vbImYceXCF)

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