Nissan Precollision warning -no codes?

Get a Consult R2R subscription and check the codes in the modules that the Autel doesn't talk to. That's a guess, but it's impossible to help without that happening first.

Thanks Keith. Gonna get the subscription in the morning and see what’s going on.

Check the mounting position of the windshield camera. Usually I see the back isn't sitting in these triangular shaped grooves. You'll notice when you pop it in correctly it has quite a bit of resistance, but it will pop in just fine. After that just drive the vehicle on a well l marked road, light will clear itself within 10 minutes usually.

Thanks Rogelio. You are correct it was not mounted correctly. The triangle tabs on the bottom weren’t in there place. I mounted it correctly but the light is still on. Gonna go with consult3 and attempt calibration and driving.

I haven't experienced it myself but i've been to class that had a similar issue and it turned out to be an aftermarket windshield was installed. they replaced the windshield with an OE and the problem went away. just my 2 cents.

Thanks Cody. Gonna attempt calibration and if not gonna recommend oem windshield. It is an aftermarket windshields.

It’s rare that there are no codes and an issue with LDA. Speaking on a Toyota import side of things normally it will come with an out of calibration or Axis calibration undone. I’m in agreement with Keith make sure the scan tool you use is as close to OEM. Simple re-calibraiton may be all it needs. I’d ask if the camera got changed. My experience almost all body shop/ aftermarket places thinks…

Thanks Erik gonna try calibration with consult 3.

I believe there is a distance sensor attached to the bumper system. Maybe a little more then a Hood and windshield was replaced. Check for proper aiming of the distance sensor. Just a guess

Thanks Rick. Yes I did do the radar calibration but it’s still flashing.

Circled in blue are the triangle alignment marks. Usually they won't be flush with bracket. In red usually this is below the windshield bracket. So module needs to be installed as to where the front of the module slips in first, then the back clips in.

You’re right. The camera wasn’t mounted correctly so gonna try calibration and test drive. If that doesn’t work gonna recommend oem windshield

I believe the camera calibration is REQUIRED not just recommended.

Yes sir. On the ones where I had this issue I still Calibrated after the issue was resolved. But there where a few where the shop did not approve a calibration and wanted to see what would happen on its own. Advised against this route but usually the customer was paying out of pocket and wanted to avoid an issue with the glass company. Even on those I never got a call back with an issue.

I've seen this issue if the windshield is not polarized correctly

I’ve experienced this before no fault codes even when using a consult 3 .try this bulletin.

Thanks Louie for the bulletin. Makes sense since the camera wasn’t mounted correctly

Did you drive it after the windshield calibration or did you do radar as well before test drive. We’re there pre-scan codes? I think you said this was from a body shop. Both windshield and radar did calibrate successfully? If you can’t figure it out after the next steps you stated. Reach out to me , think I can help you. I think you are doing a lot of unneeded work BUT I might be wrong with…

If it was mounted incorrectly then it needs a calibration. Do the cal and see were you are after that.

Don't know what you were using to scan or why it wouldn't show dtc but a slow flashing collision warning light indicates a c25xx code indicating a rationality of the camera . Overtemp,obstructed etc. Don't overlook steering angle once you have centered the car for distance sensor or lane camera aiming also. Lane camera rationality faults once repaired, require a 10 minute key off to cycle fault…

Just to give you a tip. I cant really say about Nissan and before you go deep into this thing, I went through hell in a similar situation you are in now over an aftermarket windshield when I used to work at Hyundai. I could not see any visible defects in it and was clear and I spent hours trying to get it to relearn or “see” the target where it was suppose to be at. Eventually I had the company…