FSDClarity

Common Tesla FSD Problems in 2026 and How to Fix Them

9 min readBy the FSDClarity team

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Most FSD complaints come down to six things: camera obstruction alerts, phantom braking, speed limit misreads, driver-monitoring strikes, potholes, and FSD refusing to engage at all. Three of those you can largely fix yourself. The rest are software limits you can work around but not solve.

This is a practical list, with what actually causes each one and what to do. Where something is a known limitation rather than a fault with your car, it says so.

1. "Cameras blocked or blinded"

The most common alert, and usually the easiest fix. FSD is vision-only, so any camera it can't see through takes the whole system offline.

What causes it:

  • Dirt on the B-pillar cameras. These sit in front of the side windows and never get cleaned by the wipers or by rain. They're the usual culprit.
  • Condensation or ice, especially the rear camera and the pillar cameras on a cold morning.
  • Low sun directly into a camera. Nothing to fix — it clears in a minute or two.
  • Road film on the windshield in front of the main camera cluster, behind the mirror.

What to do: clean the B-pillar cameras with a microfibre cloth every time you wash the car, and the windshield area in front of the mirror housing. In winter, start the car from the app and let the defroster run before you drive, which clears the rear and pillar cameras along with the glass.

If the alert persists on clean cameras, it's worth a service appointment — a pillar camera with water ingress is a known repair, and it's a warranty item on most cars.

2. Phantom braking

Sudden braking for nothing. It's much less frequent than it was on earlier versions, but it hasn't gone away.

What tends to trigger it: hard shadows across the road, overpass and bridge edges, oncoming traffic on unlined two-lane roads, large trucks in an adjacent lane, and sharp crests where the road disappears from view.

What actually helps:

  • Lower the speed offset on unfamiliar roads. Most phantom braking reports happen above the posted limit, where the system has less margin.
  • A less assertive driving profile. The calmer profiles brake earlier and more gently, which makes the remaining events far less alarming.
  • Keep both hands lightly on the wheel. You can override braking with the accelerator at any time, and reacting in half a second is the difference between a scare and a non-event.

What won't help: recalibrating cameras, resetting the computer, or changing tire pressures. Phantom braking is a perception and planning limitation, not a fault state. If yours is frequent and repeatable at one specific location, report it with the voice command "Bug report, phantom braking" right after it happens — that timestamps the clip for Tesla.

3. Speed limit misreads

FSD reads speed limit signs visually, and gets them wrong in predictable places: school zones with conditional limits, roads where the map and the signs disagree, and construction zones with temporary signage.

School zones are the one to watch. A sign reading "25 when children present" is a condition the car can't evaluate. It may hold the higher limit. Treat school zones as a place to take over, not supervise.

What to do: set a speed offset you're comfortable with rather than relying on the limit being right, and know that you can always adjust speed with the right scroll wheel without disengaging. Tesla's v14.3 update improved traffic sign recognition, so misreads are less common than they were, but "less common" isn't "solved".

4. Driver-monitoring strikes

FSD watches your eyes with the cabin camera. Ignore it and you collect strikes; five strikes and FSD is suspended for about a week.

What triggers a strike unfairly often:

  • Looking at the touchscreen too long — including to change the music or check the route.
  • Sunglasses, particularly dark or mirrored lenses, which can defeat gaze tracking.
  • Low sun behind you, washing out the cabin camera.
  • Holding a phone where the camera can see it, even if you aren't looking at it.

What to do: respond to the first visual warning immediately. The escalation is quick, and the nag doesn't care whether you were doing something reasonable. If you're wearing sunglasses and getting repeated warnings, try a lighter pair. Keep the cabin camera lens clean — it's above the mirror.

If you pick up strikes you believe were wrong, service can sometimes clear them. It isn't guaranteed, and it's a goodwill decision rather than a policy.

5. Potholes and road surface

FSD doesn't avoid potholes. It steers for lanes and obstacles, not for surface quality, and it will drive straight through a hole you'd have swerved around. Tesla has listed pothole avoidance as in development rather than shipped.

There's no setting for this. On roads you know are bad, drive them yourself — a bent wheel or a cracked pack undertray costs more than the convenience is worth.

6. FSD won't engage at all

If the FSD icon is missing or greyed out, work through these in order:

  1. Check you actually have it. Since February 2026 FSD is subscription-only at $99 a month, and a lapsed subscription removes it. See how to tell if your Tesla has FSD.
  2. Camera calibration. After a windshield replacement, camera repair or some service visits, the car has to recalibrate over 20–100 miles of driving. Controls → Service → Camera Calibration shows progress.
  3. No GPS or map data. FSD needs a location fix. In a parking structure or a dead zone it won't engage.
  4. Conditions. Heavy rain, snow or fog degrade the cameras enough that the car declines.
  5. Hardware. Some older cars aren't FSD-capable at all. The hardware checker will tell you from the model and year, and HW3 vs HW4 explains what each supports.

Which hardware do you have?

Check if your Tesla has HW3, HW4, or AI5 and see which FSD features are supported.

Check Hardware →

7. HW3 cars get less, later

If your car has HW3, this isn't a fault you can fix: new FSD versions land on HW4 cars first, and HW3 often receives a reduced build or waits for one.

Tesla has acknowledged that HW3 cannot support unsupervised FSD, and has said owners who bought FSD will get a computer upgrade if one is needed — without committing to when. On the October 2026 earnings call, Tesla passed over a top-voted shareholder question about exactly that. There is still no retrofit you can buy.

Which Teslas have HW4 covers how to tell, and the HW3 to HW4 upgrade covers where that promise actually stands.

8. Routing and lane choice

FSD follows the navigation route, so routing mistakes become driving mistakes: getting into the wrong lane for an exit, taking an awkward turn out of a parking lot, or missing a turn and re-routing the long way.

What helps: set the destination before you set off rather than mid-drive, and take over for the last hundred metres in car parks and complicated junctions. Lane selection on multi-lane roads improved in v14.3, which also reduced the unnecessary lane changes and the mild tailgating owners reported on earlier builds.

What's worth reporting, and how

Tesla acts on data, not descriptions. Two things actually register:

  • Voice bug report. Within a few seconds of the event, say "Bug report" and a short description. It timestamps the surrounding video.
  • The intervention prompt. Newer builds ask why you took over when you disengage. Answering it is the most direct signal you can give.

Emailing support about driving behavior achieves very little. Service is for hardware faults — camera failures, calibration that won't complete, a camera with water in it.

Frequently asked questions

Why does my Tesla say cameras are blocked when they look clean?

Usually the B-pillar cameras in front of the side windows, which collect road film and never get cleaned by rain or wipers. Condensation and low sun also cause it. If it persists on clean, dry cameras, have it checked — water ingress in a pillar camera is a known repair.

Is phantom braking fixed in 2026?

It's much rarer than on earlier versions but not gone. Shadows, overpasses and oncoming traffic on narrow roads remain the common triggers. A calmer driving profile and a lower speed offset reduce both frequency and severity.

How do I get FSD strikes removed?

Service can sometimes clear strikes as a goodwill gesture, but there's no formal appeal. Five strikes suspends FSD for about a week. The reliable fix is responding to the first warning rather than the third.

Does FSD avoid potholes?

No. It steers for lanes and obstacles, not road surface, and Tesla lists pothole avoidance as still in development. Drive bad roads yourself.

Why is FSD greyed out after a windshield replacement?

The cameras need recalibrating, which takes 20–100 miles of driving. Check progress under Controls → Service → Camera Calibration.

Do these problems affect my insurance?

Not directly, but the Safety Score that some insurers and Tesla's own FSD discount use is affected by hard braking and forced disengagements. See the FSD insurance discount.

The bottom line

Clean the B-pillar cameras, run a calmer driving profile with a modest speed offset, respond to the first nag rather than the third, and take over in school zones, car parks and on roads you know are rough.

That covers most of what owners complain about. What's left — phantom braking, potholes, HW3 falling behind — are limits of the current software rather than something wrong with your car. Knowing which is which saves a service appointment.

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