FSD radar fail on new car

I thought the removed the radar? Im surprised it still exists. 100% warranty item.

Strange. I didn't think radar still existed on newer models. Perhaps the software is panicking because it thinks you should have a radar module, and don't.

like to return the car? or bring it for service. sorry. given it’s brand new I’m very wtf

It's a known issue with cabin radar part. Open a service ticket to get it replaced free of charge under warranty. If curious, enable service mode and you will see the active cabin radar alert under service.

The whole purpose of buying a brand new car is that the manufacturer garuntees it will work while its under warranty. Contact Tesla immediately to get it fixed. And if they can't fix it, look into your local lemon laws to replace it.

This will be a warranty item. But like stpaulgym I thought the RADAR was removed from Teslas some years back. Perhaps even before the ultrasonic sensors were eliminated. if I remember correctly the reason cited was difficulty in resolving conflicts between the distance information from vision and RADAR.

Thank you. I work a demanding job and don’t have time to go in for repairs for a faulty part — it’s a reason I bought new — uggggh

Brand new car. I tried fsd for first time, was working great, then kept errroring when I tried to start it. Various places lighting etc same errror I followed the errors “learn more” prompt and it brought me to the screenshot above. I assmed it would take me to the relevant error Maybe the prompt goes to the wrong place? Idfk. Service ticket in. 11 days… lol

You could try to request mobile service. They’ll come to your house or work and replace it. Can do that for most things that don’t require them to lift the car up.

Cool. I put the ticket in and the service center is a mile away I kind of bitched that it’s new and I can’t gallavant about Summon failed too repeatedly but I assumed it was just me being an idiot newb:) 11 day wait to see them I guess — on a 30 day FSD free trial :(

It has a cabin radar.

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I see that the screen has two different errors - one for radar and a second for front camera visibility. There’s no way the first error is valid as Model Y has not had front radar installed since 2022. Juniper does have cabin radar but it would use different terminology. Front camera visibility is more likely and should be temporary. There’s warning is just the car being transparent. Can be caused by sun glare or something on your windscreen like snow or ice, or even condensation. In this case the car will show a detailed warning with an image of the obstruction. Pillar cameras will show this warning too when you drive anywhere that’s pitch black or somewhere with flat coloured walls like inside a garage or parking garage. Having said that, the fact it’s stopping TACC and Autosteer from working properly means it’s a bit more serious. In the Tesla app submit a Service request and note the warnings. Service can remotely diagnose and see the warnings. Edit: I forgot the new Model Y has a front bumper camera.

If you look at the screen shot, Tesla specifically says radar in the front bumper.

In the photo, it says “radar located in the front bumper area.”

Ask for a loaner.

The error message reads that there's a radar in the front bumper

Which error message was it that you had, w221 or w222? I'm leaning towards the w222 as the '26 MY does not have radar on the front end of the car. Wouldn't really make sense for there to be an error for something that wasn't there in the first place, but stranger things have happened. Just schedule an appointment with service so they can fix it.

New cars often have more issues than lightly used for future reference. It's not uncommon to have a couple service visits with a new car in general to work out any minor problems that slipped past QA.

It could be they are getting close to bringing radar back and misconfigured his to expect it without installing it.

Weird. I thought Tesla was “camera only” and no radar at all. This could also explain why hw4 fsd is close to flawless…

Happened to me. I got a loaner vehicle. They fixed it same day.

I have *never* been approved for mobile service.

Try restarting the mcu by holding down both steering wheel scroll wheels til the screen turns black

You didn't expect him to actually read all that, did you?

Thank you. Did you have to bring it to them or vice versa?

I brought the car to service center

You're just looking at the manual with all the available errors (also for older models probably). 2026 has no radar in the bumper. Go in to service mode and look at the actual errors listed there.

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Tell them you’re excited about FSD and ask if they can grant you more time to experience it. (They will, as they want to sell you on it.) I’ve had many new cars, some have niggles in the beginning. Not to worry. It’s inconvenient, but usually it works out and you forget about it.

Interesting supposition.

Radar is inside where the read light is. If that’s blocked you’ll get all sorts of random errors. It’s an occupancy detection radar.

It’s happening in multi locations at multiple lightings :/

Buncha junk in there in service mode . Threw it on Imgur https://imgur.com/a/OhzNFBH

Does anyone have protip on how to order mobile service? Didn’t give me the option on the app. :/

Protips welcome on how to do this lol

Yall I’ve owned a tesla for a week. I ran the service mode thing and here’s the output https://imgur.com/a/OhzNFBH

Go to Controls > Service > Camera Preview. Do you see anything odd with any of the front cameras including the front bumper camera?

Ask in message conversation. Some repairs cannot be done mobile.

Yours is the first issue I’ve seen of this. As many have said I don’t think Tesla added back external radar. The error message may have been reused for older teslas that had radar. I suspect it’s a different sensor issue necessary for TAAC/FSD. Anything from interior occupancy radar, cameras, etc. to find a better error message in service mode, enter service mode soonest after you have the error using FSD. My ‘21 model 3 side marker camera died first week. Was fine after quick repairs. I’ve had no issue with my ‘24 Model Y. If service center is close, I’d get a service request submitted soonest then in messages communicate that car was just delivered new and ask for priority appt or mobile. Good luck.

Thanks. The audio keeps erroring out when I give voice commands too ;/ every time Summon totally unresponsive Le Sigh

Sounds like something is taking down the CANbus network. Car components talk to each other and computers via their own wired network. I accidentally caused this using a USB hub to have two usb drives connected (one for dashcam and one for MP3s). The hub was preventing my GPS antennas from talking to the computer. My car would think it’s in the middle of a field and not on the road. As soon as the hub was removed, worked perfectly.

Were you stopped at a traffic light when you tried to turn it on?

Multiple places

This seemed to work. Voice command still erroring and summon still not working

Are you trying to hold it down? Single click will bring up voice command, holding it down will bring up grok which you may have to set up. Summon also has to be turned on within the autopilot settings if it hasn’t already.

Yeah not holding it down. It’s just erroring 75% of the time. Ill tell it to play Metallica, it’ll error, and then still play

Does it do the same for adjusting climate control or like seat heating? Are you subscribed to premium connectivity or using mobile hotspot?