Cooling fan activity in high heat areas

[arnis]

Do you have data or documentation on a Tesla that demonstrates this definitively?

Even those Phoenix guys have never heard AC compressor screaming when vehicle is left baking in the sun.
If AC compressor (with condenser fans) is not running, cooling is NOT possible. Glycol loop doesn't have a fan, therefore
there is no cooling happening even if glycol pumps are running. Can't cool 45C pack with 45C air even if S/X had a fan.
One glycol pump is activated while AC charging. It is for onboard charger. Dumping energy. Into that radiator that doesn't have a fan.

Theoretically, Tesla could cool the pack when parked. But it doesn't in real life. It appears there is no reason. If temperature is more than enough (let's assume 55C or 60C) it will do cooling while driving/supercharging. And that doesn't allow temperature to EVER tip the preset level (SC speed or acceleration will be limited, this has been confirmed). As soon as one stops drag racing or supercharging, heat generations stops and so does cooling. Pack will be at that border case temperature and will passively cool if left parked for hours. In case of record high temperatures like 130F, it will just NOT cool. That's also fine.

 

[Saghost]

Even those Phoenix guys have never heard AC compressor screaming when vehicle is left baking in the sun.
If AC compressor (with condenser fans) is not running, cooling is NOT possible. Glycol loop doesn't have a fan, therefore
there is no cooling happening even if glycol pumps are running. Can't cool 45C pack with 45C air even if S/X had a fan.
One glycol pump is activated while AC charging. It is for onboard charger. Dumping energy. Into that radiator that doesn't have a fan.

Theoretically, Tesla could cool the pack when parked. But it doesn't in real life. It appears there is no reason. If temperature is more than enough (let's assume 55C or 60C) it will do cooling while driving/supercharging. And that doesn't allow temperature to EVER tip the preset level (SC speed or acceleration will be limited, this has been confirmed). As soon as one stops drag racing or supercharging, heat generations stops and so does cooling. Pack will be at that border case temperature and will passively cool if left parked for hours. In case of record high temperatures like 130F, it will just NOT cool. That's also fine.

It would have been a lot faster just to say you didn't have Tesla data beyond the vague anecdote that you've never read a report from Phoenix about the fans being on when they reached the car - in conditions where the vast majority of owners are undoubtedly preconditioning the car first anyway.

The rant about not cooling without the AC is wasted because the prior posts clearly state that we believe Tesla will engage the contactors while "off" if the car feels it is necessary.

 

[arnis]

By default, we must assume there is no extra functionality if not proven otherwise.
Not visa-versa - by default functionality exists until proven otherwise.
So burden of proof is on your side

Contactor can definitely be engaged. That is not a proof of cooling action.
It's a proof of draw while stationary. 12V trickle charging for example.

Do we call a function, that happens so rarely that nobody have ever noticed it happening
during many years, even if it does exist, something that prolongs battery life?
If function is not active, it doesn't do whatever it can do.

I can give you some proof that Leaf runs AC compressor when it is plugged in and not preheating
the cabin. After you.

 

[Evoforce]

Even those Phoenix guys have never heard AC compressor screaming when vehicle is left baking in the sun.
If AC compressor (with condenser fans) is not running, cooling is NOT possible. Glycol loop doesn't have a fan, therefore
there is no cooling happening even if glycol pumps are running. Can't cool 45C pack with 45C air even if S/X had a fan.
One glycol pump is activated while AC charging. It is for onboard charger. Dumping energy. Into that radiator that doesn't have a fan.

Theoretically, Tesla could cool the pack when parked. But it doesn't in real life. It appears there is no reason. If temperature is more than enough (let's assume 55C or 60C) it will do cooling while driving/supercharging. And that doesn't allow temperature to EVER tip the preset level (SC speed or acceleration will be limited, this has been confirmed). As soon as one stops drag racing or supercharging, heat generations stops and so does cooling. Pack will be at that border case temperature and will passively cool if left parked for hours. In case of record high temperatures like 130F, it will just NOT cool. That's also fine.

Nope! Those fans and the A/C come on while it is setting unattended, and it reminds you of a plane that is readying to take off. It will use up some range, if not plugged in, while working to actively cool the traction battery.

 

[arnis]

Those fans and the A/C come on while it is setting unattended

Any data about that happening? Maybe it is cabin overheat protection?
Being near the vehicle with a key wakes it up. That includes HVAC. HVAC will wake up cabin AC immediately.

 

[arnis]

The car automatically works at cooling

Right after trip? Or when it gets hotter during midday? What is exterior temperature (shade or sun) when this happens?

 

[Evoforce]

Right after trip? Or when it gets hotter during midday? What is exterior temperature (shade or sun) when this happens?

Just sitting there in the sun baking without having been driven. I haven't really paid attention at what the outside temperatures were. Assuming somewhere over 100 F. But I cannot say exactly. We are though, a bit off thread.

 

[night0002]

As a Phoenix area owner, I can attest to the phenomenon of hyper fan activity during our hot weather. Prior to last summer our 2015 Model S 85D was typically on the road in cooler climes during the hottest weather. Last summer the car was here in June, July, and August. As the weather became very hot i was surprised to hear repeated cycling of the battery cooling system, with the fan at very high levels. It would cool the battery, but exhaust the heat into the garage, forcing continual repetitions of this cycle. I checked with a fellow Tesla owner who observed the same phenomenon. Upshot, we both bought AC units for our respective garages. Problem solved.