Airconditioner not blowing to front dash & footwell

Clubby · #1 01-08-2014, 02:00 AM

Hi, sorry if this has been explained but I cant find anywhere.
My airconditioner will only direct air to the windscreen. I doesn't matter what setting I put it on. I looked at the fuses (well atleast the ones I thought were related to the aircon).
Hopefully someone know whats wrong.
Just another thing to go wrong with this car! :-(

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MRV99 · #2 01-08-2014, 04:05 PM

I have come across this issue before on my 2012 and 2013 E70. If you have a high discharge on your battery, the blower fan which runs the air in the car will not blow above a very slight amount. The blower motor does draw a fair amount of power so BMW has programed this functionality to prevent Over discharge of the battery. You may ask why does the "defrost" or windscreen blower works at max speed. Well that is due to a safety. If a person needs to use the windscreen fan/defroster, it may be because the individual is loosing visibility and BMW does not want to prevent a greater safety issue by preventing the clearing of the windscreen. How did I find this out, my 2011 was a BMW buyback because of major electrical issues(63 days in the shop). Through this process and the fact the SA is my friend, I was given access to information most people don't get. I had many conversations with the PUMA technician which was brought in because of the PUMA case. Actually he was a very high up PUMA tech because the first one working on the case could not solve the issue.

To back this up, it is -10 degrees F here and when it is this cold, the fan is on high, seat heaters on, Heated steering wheel on, and rear defrost is on. This absolutely drains the battery especially on a short trips, The X5 will NOT charge the battery due to the efficiency Dynamics BS. After 3-4 trips like this, I can assure you that I will get a "High Battery Discharge" When that happens, the blower will not work other than for the windscreen. If I put the car on the charger, bring it up past the point to where the "high discharge" alert is not present, the blower fan works exactly how it is supposed to.

Sorry for the long winded answer but I just wanted to be clear how I came across this and hopefully back it up with some facts. Good luck

Clubby · #3 01-08-2014, 04:44 PM

Thanks for your very informative reply.
I have had a "high battery discharge" warning on my old e60 but I am not getting this alert in the e70. Could it still be this problem even though Im not getting any alerts? I will try the battery charger before Monday. I have booked it in for it routine check.
Thanks again

brocyourworld · #4 01-10-2014, 07:44 PM

Struggling with the same issue here in Calgary. Parked it outside in -30C temps and wouldn't start for me; got it jumped but haven't had a chance to get a charger on it yet. No problems starting after driving it for 30-40 minutes and parking it a controlled garage.

Any idea how long it takes to drive-charge it to the point where the vents will work again?

MRV99 · #5 01-11-2014, 07:47 PM

I wish I did know the exact. I have seen about 20+ miles at speed and not the stop and go type

Clubby · #6 01-12-2014, 05:20 AM

Well after 5 days with it refusing to cool my face it has decided to be kind and blow again.
So what will I be looking for now as I haven't done any long trips.

haydnm · #7 10-17-2015, 02:10 PM

Have the same problem as above, anyone found it fix for this, no air to floor or face, correctly set in the idrive

Thank you

brocyourworld · #8 10-17-2015, 02:25 PM

The battery gets low and it redirects all power to only the defrost. Charge the battery - problem solved.

haydnm · #9 10-17-2015, 02:56 PM

Thank you, been on some long drives but always been the same since I bought the car in March.

Also there is a letter box size on condensation right in the middle of the screen at the bottom when left over night

Will give it a go

Thank you

haydnm · #10 10-19-2015, 05:38 PM

Quote:

Originally Posted by haydnm

Thank you, been on some long drives but always been the same since I bought the car in March.

Also there is a letter box size on condensation right in the middle of the screen at the bottom when left over night

Will give it a go

Thank you

Update, charged battery overnight, however still no luck, not sure battery is at its best so have ordered a new Bosch 6 year warranty one.

I am guessing the cars is sensing amps at the battery not volts ?

Car starts no problems, but the battery conditioner said the battery was low

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