Interior reported temperature incorrectly high after windshield replacement

[electrongofast]

After front windshield replacement, two issues began to occur consistently
1. Interior temperature of the car is detected to be unreasonably high after overnight sleep. The interior temperature shows as high as 37C/99F immediate after car wake up, where the ambient temperature is 12C/54F. The reported temperature slowly reaches more reasonable 20C after half hour of being awake. Laser thermometer showed the interior temperature is ambient, and confirmed the reported temperature is incorrect.
2. Auto A/C only blows air upward (toward the windshield), and never blow air toward the passengers.

Has this occurred to anyone?

Since windshield replacement does not involve adjusting the cabin temperature sensor (under screen), I suspect the root cause is the temperature/humidity sensor under the camera housing.

Graph of interior reported temperature vs outside temperature

 

[Marcelve]

After front windshield replacement, two issues began to occur consistently
1. Interior temperature of the car is detected to be unreasonably high after overnight sleep. The interior temperature shows as high as 37C/99F immediate after car wake up, where the ambient temperature is 12C/54F. The reported temperature slowly reaches more reasonable 20C after half hour of being awake. Laser thermometer showed the interior temperature is ambient, and confirmed the reported temperature is incorrect.
2. Auto A/C only blows air upward (toward the windshield), and never blow air toward the passengers.

Has this occurred to anyone?

Since windshield replacement does not involve adjusting the cabin temperature sensor (under screen), I suspect the root cause is the temperature/humidity sensor under the camera housing.
View attachment 719486


Graph of interior reported temperature vs outside temperature
View attachment 719483

Same issue since my windshield was replace this week.

 

[electrongofast]

Did you get a solution?

 

[Marcelve]

Did you get a solution?

No not yet. I collectes my car on Wednesday and only noticed on Friday. I will call the repair shop on Monday. Will keep you posted.

 

[electrongofast]

Was the replacement done by Tesla? Good luck with the repair.

 

[Marcelve]

Was the replacement done by Tesla? Good luck with the repair.

No, an official Tesla repair center in the Netherlands

 

[electrongofast]

Got it

 

[Marcelve]

Got it

Hi Paul, just went to the repair shop and they checked the connections which seemed to be okay. Contact Tesla Assistance that suggested that the repair shop should recalibrate the cameras. It this will not solve the problem (I will know in a few hours) I have to drive up to a Tesla service center to get it fixed.

 

[electrongofast]

Shouldn't they have initiated the recalibration after windshield replacement?

 

[Marcelve]

They did but did it again as they checked the sensor connections today and on the advice of Tesla Assistance. It did unfortunately not resolve the issue. The airco keeps blowing air via the windshield only on automatic mode. The next step is to contact Tesla Assistance again to make an appointment at the Tesla service center. I guess that something is wrong with the sensor that comes with the windshield.

 

[electrongofast]

Going to have my temperature/humidity sensor replaced tomorrow. Let's see if that fixes it. I don't think windshields come with electronics and they most likely recycled your old camera electronics, assuming you're referring to the temperature/humidity sensor

 

[Marcelve]

Going to have my temperature/humidity sensor replaced tomorrow. Let's see if that fixes it. I don't think windshields come with electronics and they most likely recycled your old camera electronics, assuming you're referring to the temperature/humidity sensor

Yes, I mean the temperature/humidity sensor which is part of the new windscreen. I saw how it looks as the technician showed me.

 

[electrongofast]

Ah sounds like the sensor comes with the windshield, and they didn't re-install the sensor from the original windshield. The replacement looks straight forward from Tesla MODEL 3 SERVICE MANUAL: SENSOR - RELATIVE HUMIDITY AND TEMPERATURE (REMOVE AND REPLACE). Will let you know if the replacement tomorrow resolves this issue.

 

[Marcelve]

I understood from the technician that the small circuit board comes with the windshield. They just plug in the cables from the camera unit and that's it. The interior temperature disappeared when he unplugged the interior temperature cable on the circuit board. So the connection is working only the reading is not correct.

I have an appointment next Tuesday. Interesting to learn if they can fix the problem with your car tomorrow.

 

[ZilWin]

I'll keep an eye on this as I am having my windshield replaced Thursday by Tesla. Thanks for the heads up.

 

[flpadc]

Having the same issue. A similar thread said that the issue goes away once you get a software update (can even be a re-push of the same one you are currently on).

 

[electrongofast]

Do you have a link to the thread?

 

[ZilWin]

Having the same issue. A similar thread said that the issue goes away once you get a software update (can even be a re-push of the same one you are currently on).

Wouldn't a reboot solve the problem if it is just a matter of reloading the software?

 

[flpadc]

Do you have a link to the thread?

Here ya go! Strange HVAC issue since windshield replacement

 

[flpadc]

Wouldn't a reboot solve the problem if it is just a matter of reloading the software?

you'd think. i've tried twice with no luck. the people in this thread (Strange HVAC issue since windshield replacement) experienced the same issues post-windshield replacement.