Air conditioner dead

cuddapah · 03-25-2012, 03:59 PM

2011 Z4 35i ...
Air Conditioner was working fine. I drove for sometime and had to wait for 15mnts to pick up my kid. So I opened the windows and turned off the car. When I restarted, air conditioner didn't start. I checked all the settings. This happened sometime back when I picked up the car from the dealer after service. They said they reset the control unit. Can I do it myself ? Appreciate any help.

cuddapah · 04-26-2014, 05:49 PM

It is 84F outside and A/C stops working ... again ! One of the recurring issues :-( I have to call and setup an appointment on Monday :-(

Asbjorn · 04-27-2014, 12:03 AM

How annoying!
When you start the car do you always press down the brake pedal first and then push the start button (this is the correct way)? Or do you sometimes press and hold down the start button before pressing the brake (wrong way)? I remember someone posted about the second method causing the AC to stop working. Also I am curious to know if you were watching DVDs or something similar while waiting in the car at that time?

CedarZ4 · 04-27-2014, 12:26 AM

Well known HVAC problem.

My car has had the AC not turn on at all, and at times would turn itself on when everything is off.

Brought it into the dealer, had some parts changed, not just a reset, (not sure what… have to find my invoice) and has never happened since.

Have a read here:
http://e89.zpost.com/forums/showthread.php?t=715456

cuddapah · 04-27-2014, 12:35 AM

Can you please check your invoice and let me know what was done. Thanks !

Quote:

Originally Posted by CedarZ4

Well known HVAC problem.

My car has had the AC not turn on at all, and at times would turn itself on when everything is off.

Brought it into the dealer, had some parts changed, not just a reset, (not sure what… have to find my invoice) and has never happened since.

Have a read here:
http://e89.zpost.com/forums/showthread.php?t=715456

BMWZ4 · 04-27-2014, 07:04 AM

In my case, the control unit was replaced (last August/September).
Dave

BMWZ4RIDER · 04-27-2014, 08:10 AM

My AC unit and all controls, also stopped working 1 time. I opened the fuse box located in the top of the passenger foot well and pulled the fuses and checked for lose connections as I have never looked in the box before.

This worked. Never had an issue again in the last 12 months.

FYI

Lurcher · 04-27-2014, 11:21 AM

Quote:

Originally Posted by BMWZ4RIDER

My AC unit and all controls, also stopped working 1 time. I opened the fuse box located in the top of the passenger foot well and pulled the fuses and checked for lose connections as I have never looked in the box before.

This worked. Never had an issue again in the last 12 months.

FYI

Same thing here - once in the past year. Pulled the 3 fuses associated with AC and something "reset" - no issues since

bimme_up · 04-27-2014, 01:34 PM

My z4 2013 35i had the same problem since it was new.
The dealer updated software and its fixed.
Funny thing I noticed is that when the I start the engine the A/C turns off briefly(It used stay off before) and comes right back up.
I assume the software wakes it up kicking it in the butt.

Anyway I am just glad its fixed.

tranquility · 04-27-2014, 03:19 PM

Quote:

Originally Posted by Asbjorn

How annoying!
When you start the car do you always press down the brake pedal first and then push the start button (this is the correct way)? Or do you sometimes press and hold down the start button before pressing the brake (wrong way)? I remember someone posted about the second method causing the AC to stop working. Also I am curious to know if you were watching DVDs or something similar while waiting in the car at that time?

That was me w/ the 'Tranquility Fix' or 'T-Fix' for short.

Anyway, it was addressing the HVAC prb and I discovered the fix was to hold the start button and then press the brake to start the car.

rezok · 04-28-2014, 06:09 AM

Same here... reset worked, haven't heard or seen since.

Good luck!

cuddapah · 04-28-2014, 08:14 AM

BMW Serivce has been doing resets. Last time they updated s/w with a beta as per puma case. Looks like it didn't help. I complained this issue to NHTSA (NHTSA ID Number: 10525291).

Quote:

Originally Posted by rezok

Same here... reset worked, haven't heard or seen since.

Good luck!

cuddapah · 04-30-2014, 05:39 PM

Well .. BMW didn't find any fault codes or any issues with IHKA. So they released the car ... frustrating :-(

cuddapah · 05-11-2014, 07:35 AM

It happened again

Taking in for service on Monday

03-25-2012, 03:59 PM	#1
cuddapah First Lieutenant 41 Rep 312 Posts Drives: 2011 BMW Z4 sDrive 35i Join Date: Feb 2012 Location: Jacksonville, FL iTrader: (0)	Air conditioner dead 2011 Z4 35i ... Air Conditioner was working fine. I drove for sometime and had to wait for 15mnts to pick up my kid. So I opened the windows and turned off the car. When I restarted, air conditioner didn't start. I checked all the settings. This happened sometime back when I picked up the car from the dealer after service. They said they reset the control unit. Can I do it myself ? Appreciate any help.
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04-26-2014, 05:49 PM	#2
cuddapah First Lieutenant 41 Rep 312 Posts Drives: 2011 BMW Z4 sDrive 35i Join Date: Feb 2012 Location: Jacksonville, FL iTrader: (0)	It is 84F outside and A/C stops working ... again ! One of the recurring issues :-( I have to call and setup an appointment on Monday :-( Attached Images
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04-27-2014, 12:03 AM	#3
Asbjorn Captain 90 Rep 833 Posts Drives: Z4 N54 DCT (VTT GC lites) Join Date: Mar 2012 Location: European in China iTrader: (0)	How annoying! When you start the car do you always press down the brake pedal first and then push the start button (this is the correct way)? Or do you sometimes press and hold down the start button before pressing the brake (wrong way)? I remember someone posted about the second method causing the AC to stop working. Also I am curious to know if you were watching DVDs or something similar while waiting in the car at that time?
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04-27-2014, 12:26 AM	#4
CedarZ4 Captain 68 Rep 715 Posts Drives: G05 M50i, Tesla M3P Join Date: Jan 2013 Location: SoFL iTrader: (2)	Well known HVAC problem. My car has had the AC not turn on at all, and at times would turn itself on when everything is off. Brought it into the dealer, had some parts changed, not just a reset, (not sure what… have to find my invoice) and has never happened since. Have a read here: http://e89.zpost.com/forums/showthread.php?t=715456
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04-27-2014, 07:04 AM	#6
BMWZ4 Major General 1910 Rep 5,102 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	In my case, the control unit was replaced (last August/September). Dave __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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04-27-2014, 08:10 AM	#7
BMWZ4RIDER BMWZ4Rider 69 Rep 801 Posts Drives: 2009 BMW Z4 35i Join Date: Dec 2012 Location: Cape Cod, MA iTrader: (0)	My AC unit and all controls, also stopped working 1 time. I opened the fuse box located in the top of the passenger foot well and pulled the fuses and checked for lose connections as I have never looked in the box before. This worked. Never had an issue again in the last 12 months. FYI __________________ 2009 BMW Z4 35i/SMG/DCT/Premium,Cold, Sound PK/Com Acc/Ash/PDC/Wind Deflector/Smoked Reflectors/Red Calipers/Cl Mask/M Series Grill/6000K LED's/De-Badged/M Pedals/CF Mirrors-Engine Cover/Stubby/20% Tint/H8 LED's/LCI Side Markers/Sniper Sprint Spoiler/VMR V710/H&R Sport Springs/KN.
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04-27-2014, 01:34 PM	#9
bimme_up Registered 0 Rep 2 Posts Drives: Z4(e89) Join Date: Jan 2014 Location: Toronto(where mayor smokes crack) iTrader: (0)	My z4 2013 35i had the same problem since it was new. The dealer updated software and its fixed. Funny thing I noticed is that when the I start the engine the A/C turns off briefly(It used stay off before) and comes right back up. I assume the software wakes it up kicking it in the butt. Anyway I am just glad its fixed.
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04-28-2014, 06:09 AM	#11
rezok Private 11 Rep 62 Posts Drives: BMW X3 3.0d 2018 / M2 G87 Join Date: Dec 2012 Location: Australia iTrader: (0)	Same here... reset worked, haven't heard or seen since. Good luck!
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04-30-2014, 05:39 PM	#13
cuddapah First Lieutenant 41 Rep 312 Posts Drives: 2011 BMW Z4 sDrive 35i Join Date: Feb 2012 Location: Jacksonville, FL iTrader: (0)	Well .. BMW didn't find any fault codes or any issues with IHKA. So they released the car ... frustrating :-(
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05-11-2014, 07:35 AM	#14
cuddapah First Lieutenant 41 Rep 312 Posts Drives: 2011 BMW Z4 sDrive 35i Join Date: Feb 2012 Location: Jacksonville, FL iTrader: (0)	It happened again Taking in for service on Monday
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