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BYD Dolphin Surf Boost. “Camera blocked” error caused acceleration from standstill?

FrenchFatCat | 2026-01-06 19:25 | 15 views

Hi all, I bought a BYD Dolphin Surf Boost in the UK on New Year’s Eve. Today, on my drive to work, I experienced something that really shook my confidence in the car. While using cruise control, I received a **“Camera blocked”** warning twice. On both occasions, the car began to accelerate forward from a standstill at traffic lights. I wasn’t touching the accelerator, and this happened immediately after the warning appeared. The weather conditions were pretty bad at the time — heavy rain with a bit of sleet — so I’m wondering: * Is this expected behaviour? * Is there something I might be doing wrong with cruise control? * Or is this potentially a fault that needs checking? It was very concerning, especially in traffic, and I’d really appreciate hearing if anyone else has experienced something similar or has any insight. Thanks for taking the time to read.

Comments (24)
Katzyn 2026-01-06 22:48

Cruise control isn't for using at stop lights - it's for literally cruising, maintaining the same speed in light traffic on highways. You don't use it when you're not moving, you don't use it in bad weather, you don't use it when you're going to need to brake soon.

rogueqd 2026-01-06 23:44

I agree that accelerating is not a good response to a "camera blocked" state. You would think that gently braking would be more appropriate. But I also agree with the other users that you shouldn't be using cruise control in those conditions.

FrenchFatCat 2026-01-07 01:13

While i completely agree with you that It wasnt the right conditions to be using it, the car automaically accelerating when it has an internal error is an appalling feature, no? This is not the first car I've had that has had the ACC, every other car defaults to 'off' not 'begin to accelerate'. Im shocked you are fine with this.

FrenchFatCat 2026-01-07 01:44

"Cruise control isn't for using at stop lights" Page 104 of the BYD Dolphin Surf user manual. Follow-to-Stop/Start ● Controlled by ACC, the vehicle stops when other vehicles ahead stop in normal driving conditions and it resumes driving automatically following the vehicles ahead if the stop is less than 30 seconds. ● If the stop time is between 30 seconds and 3 minutes, the driver needs to either press the accelerator pedal or pull up the lever ② to activate ACC. ● If the stop time is more than 3 minutes, ACC automatically enters standby and the EPB switch engages.

alkonz 2026-01-07 03:45

I use it all the time in traffic as I find it very helpful not having to start-stop manually all the time. However I still don't trust it fully!

alkonz 2026-01-07 03:48

This is very worrying and I'm sure it's not intentional. If you are able to reproduce the same result by intentionally blocking the camera and seeing how it reacts then I would definitely report this!

FrenchFatCat 2026-01-07 04:21

Thats not a bad shout, I might find a secluded road and see if a friend fancies testing it out.

jmcdongle 2026-01-07 06:19

Did you have your foot on the brake pedal or the EPB enabled?

FrenchFatCat 2026-01-07 06:24

I had my foot hovering over the break pedal, the car (i assume) put itself into park (or at least the held the break - not 100%sure how it works) while waiting for the leading car to leave.

2021Noob 2026-01-07 06:47

If it warns you that it can't do something, don't try to force it. It told you it couldn't see, that's when you need to manually drive the car until you can clean and check that the camera is working again, while still keeping at the ready to manually override it.

Iain365 2026-01-07 06:53

I use my cruise control when in queues as it means I don't have to dick about with the brakes. It works perfectly well normally.

MMRS2000 2026-01-07 07:32

Traditionally, default behaviour for cruise control is to maintain set speed. I'm guessing that the software possibly defaulted to this basic version of CC when it wasn't able to function as an ACC. Is it safe? Not ideally, but then the car doesn't know where it is at that point. Stopping could be dangerous if the camera was blocked while travelling on a highway. Personally, I'm with you, I'd hope for an audible alert and for CC/ACC to switch off, rather than the car guessing/defaulting to some state. Ultimately, it's up to the driver to be prepared to safely operate the vehicle at any moment. But yeah, that's some poor software functional choice.

Careless_Contact_517 2026-01-07 09:16

Ti do perfettamente ragione. Mi è capitato più volte che la macchina disattivasse il cruise control in fase di rallentamento in mezzo al traffico. Fortunatamente sono sempre riuscito a frenare prima di colpire la macchina davanti a me

K_teto 2026-01-07 20:01

This is the right advice. When the car says "I can't do this right now", don't answer "oh, you will", because it will, but not how you want it because it already said that he can't.

alkonz 2026-01-08 12:55

The tricky part will be to block the camera while it's moving 😮 maybe some kind of remote shutter 😂

FrenchFatCat 2026-01-08 12:56

The car wasn't moving. That was my point. The car was stationary and accelerated forward by its self.

alkonz 2026-01-08 19:36

Did you notice if the ACC light went off when it started accelerating?

alkonz 2026-01-08 19:41

But the car was stopped when it lost camera vision so it shouldn't have started under any conditions even without vision.

FrenchFatCat 2026-01-08 19:52

I have to admit, it happened so quickly all I noticed was "camera blocked"

MMRS2000 2026-01-08 22:00

Oh I agree!! Hence why I said it's poor software design.

drossia2002 2026-01-09 05:59

Isn't the car primarily using the radar, not the camera, for ACC? At least that is what my dolphin does.

FrenchFatCat 2026-01-09 07:12

This is really easy to say wind hinder sight. First time it happened I had no idea what was going on. Im glad your focusing on blaming the user and not the glaringly obvious point that the car accelerated on its own though...

Silenceisgrey 2026-01-09 14:37

I dont think anyone could be fine with this. I will say, however, I never take my hands off the wheel and am always ready to press the brake pedal

Calm-Seat51 2026-01-17 20:40

Dolphin surf, camera only,no radar.

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