Headlight flashing after update?!?

[Dr T]

My left headlight started flashing, I just updated my 2022 Model 3 LR to 2023.26.1

Anyone having a similar issue?

 

[ColoradoMike]

My left headlight started flashing, I just updated my 2022 Model 3 LR to 2023.26.1

Anyone having a similar issue?

Not on ours.

Can you give us some details? Ours is in the garage and I just went so see if getting in and starting we had zero issues.

 

[E90alex]

Try rebooting the car and see if that helps.

If not then try reinstalling the software in the service menu.

If it still doesn’t fix it then submit a service request

 

[Dr T]

I put it in reverse to exit my garage and it started flashing. Just the left headlight, not the right. Now it always flashes (in drive, park, reverse...).

I tried to change the lights "On" (they are always on "Auto") but it keeps flashing, if I manually shut off the lights, it stops.
Everything else (blinkers etc.) seems to work ok.

Here's a link to the video I made this morning (let me know if it doesn't work!).

Thank you!

 

[Dr T]

Try rebooting the car and see if that helps.

If not then try reinstalling the software in the service menu.

If it still doesn’t fix it then submit a service request

I tried rebooting the car. Nothing changed.

I already submitted a service request and sent them the video, hopefully they can fix it via software

I may try reinstalling the software tonight, when I get home. Thanks for the suggestion!

 

[RayK]

Just to be clear, the video appears to show that the daytime running light (DRL) is the light that is flashing, not the headlight.

 

[Dr T]

You are correct! I wrote "headlight" meaning the light as a whole, but it's specifically the DRL that seems affected. Later I will have to check if the rest of the light works normally... (I am at work now)

 

[RayK]

There have been others that have reported a flashing/blinking DRL in their 3s. Some videos can be found on YouTube. I looked quickly at a couple but there was nothing that I saw in the comments which documented what the fix was. Here's to hoping that a manual reboot software re-install solves the issue.

 

[Bikeman]

Isn't the lights flashing about the same display as when Sentry mode detects a problem, or does this not match the sentry flash?

 

[Dr T]

It does not look like the Sentry mode, it looks like a random flashing.

About software reinstall: how safe is it to do? I got a bit freaked out about the warnings on the screen
I can drive my car normally (I just switch the lights off) and I don't want to brick it...
Did any of you have problems with a software reinstall?
Should I just wait for their tech to come, on Tuesday?

 

[RayK]

I have not accessed Service Mode before (old software version that is geo-fenced) but my understanding is that it's pretty safe to do so. If you already have a service visit scheduled and you're worried about fiddling with the software and you have a workaround for the problem, then if it were me, I'd wait until you get an expert to help.

 

[Msjulie]

Maybe the light is simply failing; I recall a time in the earlier builds it was common enough that I saw posts on it though our 2018 is fine

 

[E90alex]

Just as a data point, my 2022 LR updated to 2023.26.1 yesterday and so far no issues that I can see.

 

[Dr T]

Update: techs came this morning and changed the whole headlight (under warranty ). Not sure if the update triggered something or if it was just a coincidence, they didn't do anything to the software (that I know of, at least!).

 

[Thisabel]

I have the same problem. Black gaffer tape until the next update?????

 

[Dr T]

I have the same problem. Black gaffer tape until the next update?????

Techs didn't mention anything about the update, so I am not sure if it just causes an issue in some headlights, or if it's totally unrelated.
If you are still covered by warranty I suggest to put in a service request, after they changed the headlight the issue did not reappear (I am still on the same software version: 2023.26.1).

 

[Jeremy Burrows]

I've had the same issue Model Y in New Zealand - update 2023.26.7 hoping the next update fixes it.

 

[turns2stone]

Oh dang, I have this problem too!
2023 Model 3 P w/matrix. However, I've only noticed it so far in the heat of the day (110ºF/46ºC) when I pull into my garage the headlights turn on.

Seems like this is something that would be caught during warm weather testing? If heat really is a factor.

I'll have to check after dark and when it's below 100F.

 

[terranx]

Seems like this is something that would be caught during warm weather testing? If heat really is a factor.

This is Tesla we're talking about... Cutting corners and using the customers as product testers is basically their business plan.