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      01-07-2016, 04:27 AM   #1
terminator335i
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Ventilation on when car is locked???

Hi guys,

Just wondering if anyone can help me out here.
I've noticed recently that the cars ventilation starts to blow air around the windshield area when I've already parked the car in the garage and locked it. It can come on at anytime, even a few hours after it has been parked in the garage, and the only way to stop it is to unlock the car, open the door. I don't know how long it lasted for because by the time I go into my garage to get something, and I notice it going on, I try and switch it off immediately.

I know that you can set a timer on the climate control for when you get into the car in the morning on a cold day or hot day, but my settings are not turned on, and there is no timer set.
One time, I started my car in the morning and noticed that the 'low battery warning came up' and that was due to the ventilation going on the night before which may have slightly drained the battery.

Any clues or why this happened?
How do I stop this from continuing?
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      01-07-2016, 08:24 AM   #2
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Hard to tell without more details, but I assume you are outside of the car when noticing this since you say the car is locked. Sometimes the engine fan will run awhile after turning the car off to continue cooling the engine. So perhaps that is what you are hearing and perhaps the fan creates enough air movement that some of it is escaping along the edge of the hood at the windshield?
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      01-07-2016, 08:43 AM   #3
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Quote:
Originally Posted by Cabrio330 View Post
Hard to tell without more details, but I assume you are outside of the car when noticing this since you say the car is locked. Sometimes the engine fan will run awhile after turning the car off to continue cooling the engine. So perhaps that is what you are hearing and perhaps the fan creates enough air movement that some of it is escaping along the edge of the hood at the windshield?
Not likely...the water pump can sometimes continue to run for a short time to circulate engine coolant, but if the fan is running after the engine shuts down, something's wrong. F30 M-Sport cars equipped with an auxiliary coolant radiator and fan have had an issue where that aux fan fails and the main fan runs while the engine's on and after it shuts down at a high speed. That fan probably wouldn't move enough air to cause what the OP is stating, especially if the car's cooled down already. More likely, there's some issue with the timer for the climate control that is turning on the ventilation fan at random times. It'll be interesting to find out what the dealer says when he brings it in for service.
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      01-07-2016, 09:28 AM   #4
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Next time you turn car off, check climate settings in iDrive. That is where you would set the parked car ventilation to either come on after you hit the start/stop button the 2nd time or at some later point in the day. Wondering if the box is checked. But it sounds like a malfunction yo me.
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      01-07-2016, 04:18 PM   #5
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Parked ventilation

My wife's Volvo runs the cabin ventilation for a bit about 30 minutes or so after being parked. I looked it up and it says they do it to move the air so it does not get moist in there. Strange, but supposed to be there. On the F30 platform though, sounds like no one else has it.
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      01-09-2016, 12:59 AM   #6
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You can program the ventilation system to come on at a specific time. It's designed so it can vent the car up to 30 minutes before you get in to drive home. I use it in the summer but honestly it makes minimal impact on cabin temperature.

It's also possible that the schedule yours is set to is just screwed up.

http://f30.bimmerpost.com/forums/sho...d.php?t=708027
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      01-31-2016, 03:52 AM   #7
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Quote:
Originally Posted by Cabrio330
Hard to tell without more details, but I assume you are outside of the car when noticing this since you say the car is locked. Sometimes the engine fan will run awhile after turning the car off to continue cooling the engine. So perhaps that is what you are hearing and perhaps the fan creates enough air movement that some of it is escaping along the edge of the hood at the windshield?
Nah, this happens not straight away after turning off ignition, but comes on when car is off a fair few hours later. I know that the fan continues to run after turning off to cool the turbos (sort of like a turbo timer) but this shit kicks in many hours later, and I don't know how long it goes for, because by the time I notice it, I open the car door and it turns off. It's a gentle fan noise coming from the windshield ventilation area.
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      02-06-2016, 09:26 AM   #8
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Quote:
Originally Posted by terminator335i View Post
Nah, this happens not straight away after turning off ignition, but comes on when car is off a fair few hours later. I know that the fan continues to run after turning off to cool the turbos (sort of like a turbo timer) but this shit kicks in many hours later, and I don't know how long it goes for, because by the time I notice it, I open the car door and it turns off. It's a gentle fan noise coming from the windshield ventilation area.
Do you have an aftemarket stereo? My VW tiguan GPs Headunit had a seperate fan that would come on even when the car was off to cool down the unit.
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      02-06-2016, 01:16 PM   #9
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Quote:
Originally Posted by DJ Rocc
Quote:
Originally Posted by terminator335i View Post
Nah, this happens not straight away after turning off ignition, but comes on when car is off a fair few hours later. I know that the fan continues to run after turning off to cool the turbos (sort of like a turbo timer) but this shit kicks in many hours later, and I don't know how long it goes for, because by the time I notice it, I open the car door and it turns off. It's a gentle fan noise coming from the windshield ventilation area.
Do you have an aftemarket stereo? My VW tiguan GPs Headunit had a seperate fan that would come on even when the car was off to cool down the unit.
no aftermarket.
got the harmon kadon option on the car.
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      02-06-2016, 01:20 PM   #10
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also every time i start my car the air comes on, can i turn that off?
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