Thread: Residual Heat??
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      02-29-2020, 05:41 PM   #5
wrickem
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Quote:
Originally Posted by Qsilver7 View Post
Quote:
Originally Posted by wrickem View Post

Car>settings>climate control>pre-ventilation>activate now.
Unless things have changed with the G series...the setting above on the E & F series only worked when temps were approximately ABOVE 59° F and is used mainly to ventilate the car when it is ambient temps are warm by turning on the blower to bring the temp inside the cabin down.

The REST feature (as mentioned) runs the blower but the residual heat from the engine is used to keep the cabin warm...and one of the criteria is that the temps have to be cooler (like below 59° F).

Don't hold the 59° F as a a rock solid rule...I believe the F series may have changed the actual temp/degree that the REST feature and VENTILATE features can be activated. But the concept is that REST uses the residual heat from the engine when it is cool to keep the cabin warm...and the VENTILATE feature uses the blower to blow ambient air into the cabin to cool it down.
Quote:
Originally Posted by Qsilver7 View Post
Quote:
Originally Posted by wrickem View Post

Car>settings>climate control>pre-ventilation>activate now.
Unless things have changed with the G series...the setting above on the E & F series only worked when temps were approximately ABOVE 59° F and is used mainly to ventilate the car when it is ambient temps are warm by turning on the blower to bring the temp inside the cabin down.
I think you know by now that EVERYTHING has changed from every previous BMW model with this one. "parked car ventilation" operates entirely different now. "Depending on set temperature and ambient temperature, the car's interior is ventilated or possibly heated using the engine's residual heat".

In previous BMW's if you hit the REST button and the temp was above a certain temp, it just wouldn't activate, pretty much like you said. To move air around on a hot day, you'd use the old (& pretty useless) "parked car ventilation" to turn the fan on and blow around the hot air. In this one, if you hit the fan switch and it's below a certain temp you'll get residual heat and when it's hot out you'll get the fan blowing air around.
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