Why doesn't my Model Y shutdown and/or keeps waking up

[IraSch]

I've had my Model Y AWD LR for a few weeks now. When I park it in the garage, even after a short trip, something under the fronk keeps running. Sometimes for hours (literally). And sometimes when I go into the garage many hours later (or next day) something under the fronk wakes up.

Some details:
1-Doors are closed and the temperature monitoring feature to keep the car cool (can't remember the exact name) is turned off.
2-Screen is NOT active when the fan keeps running, nor when we go into the garage the next day and whatever makes noise under the fronk wakes up.
3-It is not plugged in.
4-Sentry mode is turned off at home.
5-It does this even when my phone app is OFF, or even when I don't have my phone with me.
6-Temperature around here has been hot - 90's outside, 80-90F in the garage.
7-It isn't trying to run the AC - at least not to cool the inside of the car.
8-I don't seem to be losing miles overnight

I know it will cool the battery after a trip, but something keeps going for hours even after a 2-3 mile trip.

My wife just went into the garage and a fan was running (low level). Car hasn't been used in 2 days. Temp in the garage is 75F. She didn't have her phone or key card on her. Her phone was in the bedroom (40-50' away) and the app was not even on in background.

Does anyone know what's going on? After a few hours there shouldn't be anything that needs to run or be cooled off.

 

[dmh444]

Is your cabin overheat protection on?

 

[IraSch]

Is your cabin overheat protection on?

No, completely off.

 

[dmh444]

If #8 is true (no phantom draining), then I'm baffled.

 

[IraSch]

turns out there is a slight phantom draw. I checked from yesterday to today (car didn't move and I didn't do anything to wake it up), and 1 lost 1 miles (177 miles remaining to 176 miles remaining).

 

[dmh444]

that's completely normal. if anything, that's pretty good assuming it's not plugged in.

 

[steve841]

Dont lose sleep.. Perfectly normal.

Pumps are running, other electrical items, HVAC ... Just cause the car isnt running doesnt mean the battery doesnt need managed.

 

[IraSch]

I knew that it would use battery power to maintain its systems. The manual even warns about leaving it at an airport parking lot and coming back to an empty battery.

But I would have expected that the relatively small load on such a large battery wouldn't require any active cooling. It's almost like it's using more power to keep the battery cool than it's using to maintain it's internal systems.

If it's normal then I'll ignore it.

Thanks.

 

[steve841]

In my experience, 2-10 miles of overnight loss is normal. Yes, thats a big range, dont ask my why. But more than 7+ was an outlier.

That's consistent over two different MS's I've owned.

 

[rvnc]

From page 127 of the Manual:

• Even when not in use, you may hear Model Y emit a whining noise or the sound of water circulating. These sounds are normal and occur when the internal cooling systems turn on to support various vehicle functions, such as maintaining the 12V battery and balancing the temperature of the high voltage Battery.

 

[Mike_TV]

It's the LDP pump pressurizing the gas EVAP system to make sure they are no leaks. You'll get a check engine light if there is a leak or if the gas cap is loose. Oh wait...

 

[RetepRelief]

Apps like Teslafi can keep waking up the car in their default setting.

 

[IraSch]

Apps like Teslafi can keep waking up the car in their default setting.

Not aware of what Teslafi is? I'm using the "factory" Tesla app on an iphone. Did a search for Teslafi in the App Store and didn't find it (at least in the first few screens).

 

[bdambrosio]

Do you have a key fob? My Model X kept making noises, then I realized I put the fob on my bedstand at night, right on the other side of the garage wall! Moved it a couple of feet, end of problem.

 

[IraSch]

Do you have a key fob? My Model X kept making noises, then I realized I put the fob on my bedstand at night, right on the other side of the garage wall! Moved it a couple of feet, end of problem.

No, never purchased the keyfob (extra cost item on Model Y). Just smartphones and keycard as a backup.

 

[21deven]

I have the same problem battery drains 3% within 24 hours.

 

[GtiMart]

The fan will run for a while after you use the car to dry up the AC evaporator. That is to prevent bad odors from eventually forming. It's a fairly new change in the software. Pumps will also run for a while.
With that said, there is no reason I can see for the car to wake up simply when you walk by it. That could happen is sentry mode is on but then the car would never sleep so you would lose range during the night.

The car will automatically wake up from time to time. It might send data to Tesla for example.