Wrong outside temp reading

[ACAG]

I have noticed that my outside temp reading is wrong (lower) then the actual reading by 10 degrees for the first 10 minutes of my drive. Anyone else have this problem?

 

[techmagnetic]

I've noticed the same sometimes. I need to start paying closer attention to see if it's consistent.

 

[CyberGus]

My outside temp shows as 7 degrees in Central TX, that can't be right

 

[mariod]

We've had fluctuations in temp readings, but I always attribute that to the garage parking. The sensor is probably filtered and does not respond quickly. Probably on purpose and with good reason.

 

[ACAG]

Had my car at service for this issue, and the following was done for the repair:

Performed first thermal test. Passed. Removed and replaced louver for outside temp sensor. Performed thermal test after replacement,. confirmed test passed. Outside temperature within specs after driving vehicleCorrection:
Active Grille Shutter (Remove & Replace)

Parts Replaced or AddedPartQuantity:
MY ACTIVE GRILLE SHUTTER ASSY(1494159-00-A)

 

[Hoodoo]

I’ve also had recurring issues with stuck temp reading. Both too low and too high by 5-10 C. Most recently today on 2022.4.5. Reading 1 C when it’s 10 C.

 

[Oreodriver]

Mine is slow to show correct outside temp too. Makes the climate control a bit confused until it figures out how freaking cold it actually is outside. (-7c inside garage & showing on car display but actually -24c outside).

 

[admanZ]

Mine is slow to show correct outside temp too. Makes the climate control a bit confused until it figures out how freaking cold it actually is outside. (-7c inside garage & showing on car display but actually -24c outside).

It takes quite a long time for my outside temperature to report accurately. For example, this morning my garage was around 55F while it was 14F outside. Took around 15 minutes for the outside temperature to report reality. Is this a software issue or is the outside temperature sensor just in a spot that is really slow to change temps? This would happen on our old car as well--it would just correct to actual temps much more quickly.

 

[Vicj]

Lol. It was 18 outside this morning when I left my garage. 30 minutes, and 26 miles later, mine still read 50.
And yes, the entire climate control depends on that sensor being right.

 

[admanZ]

Lol. It was 18 outside this morning when I left my garage. 30 minutes, and 26 miles later, mine still read 50.
And yes, the entire climate control depends on that sensor being right.

Wow. That's even more extreme than my experience. Although now that I think about it, after 15 minutes mine wasn't reading completely accurately. It was just closer to reality. I think it read like 25F or so, which I think was close enough that the climate control was working more or less properly. Half the week I park the Tesla outside the garage, and on those days the temperature sensor is accurate. I guess that's the solution?

 

[Pianewman]

A single data point, for sure, but no issues with mine. I frequently check temps, thermometer at home, local weather app, etc,, and VIN 88,xxx is within a degree or two. Granted, we're not having huge temp swings here...30f-70f.

Curious: Where exactly is the exterior temp sensor? Is it getting covered with road debris/dust/leaves?

 

[admanZ]

A single data point, for sure, but no issues with mine. I frequently check temps, thermometer at home, local weather app, etc,, and VIN 88,xxx is within a degree or two. Granted, we're not having huge temp swings here...30f-70f.

Curious: Where exactly is the exterior temp sensor? Is it getting covered with road debris/dust/leaves?

Do you park your car inside or outside? Like I said, when I park my car outside, the exterior temperature is accurate. It's just that it takes a long time to adjust when you go from a climate-controlled garage to driving.

 

[Vicj]

Yep. Way too long. My climate control sometimes turns on the A/C when it's below freezing out, as the heated garage temp of 55 or 60 degrees stays on the damned screen for 20 or 30 minutes.