|
How to stop AC from coming on during start?
I've this annoying "feature" ever since I've bought my 2005 X5. Being in Houston, I really didn't pay attention to this since I would eventually turn the AC on anyways. About 9 out of 12 months, AC will be needed. Now that it is getting cooler, I don't like to have the AC come on every time I put my key in the ignition and turn on the engine. Isn't there a chip in the key that remembers my settings prior to engine shut down? Can I program this without having to take it back to the dealer for "key programming?
|
I am not sure why the vent won't stay off on mine either. Sometimes the car forgets, and keeps the fan off. To not have the AC turn on auto, turn off the AC button, at least only the vent will turn on the next time.
While we are on the subject, why does bmw not have an OFF button? |
I have this same issue on my x5 and was the same thing on my previous
e46 BMW |
there is no way to really turn it off. (did research)
possibly find a way to code it. |
I run our HVAC on 'manual': if I want A/C I hit the snowflake button, and set vents and temp. If I don't want A/C it is never on: I leave car at '60' or '70' if cold out, and usually just floor and/or floor center vent, and never on 'Auto'.
When I start it up, there is no A/C, just the previously set temp and vent setting. I realize there are fans of 'Auto' and running their A/C in a mix situ, 24/7, but I have never done that and have had zero probs with A/C in 11+ yrs/85k miles, or in any car I have owned in 50+ yrs of driving, fwiw. Go to 'manual operation' and it won't be A/C, until you want it. GL, mD |
With my memory seats, with the car running in the configuration I want, I push the seat memory button and than one of the memory positions.
When the car is restarted, that set configuration is initiated. i.e seat position, temperature, steering wheel position, airco etc. |
Unfortunately there is no way to completely shut it off. Leaving it in "manual" mode is your best option. I have three BMW's right now, and this is the one thing that bugs me also. I have a good friend that works for BMW's HQ here in NJ, and I bitched to him about this. As he jokingly said, "it's an undocumented feature".
|
2cents
i think that mostlyharmless has a valid point, not sure. but, from memory (pun intended) i thought whatever configuration you had set regarding the heat / or a.c. prior to pushing the memory button would then be enabled when the car was started using the same key that was utilized when initiating the memory? If that is the case, during winter time if you were to re-set the memory while the a.c. was off (or the heat was on for that matter), when you restart the memory will engage the settings that were locked in. I thought that was the case but perhaps a 'memory setting/ key fob' expert could chime in (could also be different for some years?)
|
the option "offmemory" can be coded. additionally the setting to remember a/c on/off function can be coded via car key memory. when returning to the vehicle after shutting off the climate control, after vehicle falls asleep, the climate control returns to the lowest blower setting. this setting is necessary to prevent moisture build up in climate control hvac box.
|
There seems to be a way to code it, so it doesn't turn off if you left it off. I haven't personally tried it yet, but it does seem possible via coding.
|
yup i have issue too, pain the butt if you ask me, any quick fixes will be appreactied
|
I believe there may be a bit of confusion going on here.
Correct me if i'm wrong but when most people refer to the AC They mean engaging the compressor to cool the vehicle. If that's what is meant by AC then as MD correctly said Just press the snowflake button and the AC will stay off. How donI know? I have a 2005 4.4 and I just went outside To confirm that it works that way. If however one is referring the the fan that comes on Each time the vehicle is started then no you cannot turn It off and expect that the next time you start the vehicle It will still be off. Mine has never worked that way and Rightly so. I believe BMW and most people want some kind of air circulation in the vehicle no matter what the season. |
Yeah, I think most of us here are talking about the fan but not the AC. When I bought my x5 5 yrs ago, I took it back to the BMW to get this fixed in the first week straight after I found out this "problem". I remember altogether I brought it back to them at least 3 times until I met the actual saleswoman who sold me the car on the site telling me that it is designed to act like this for safety reason (to prevent fog up).
What i always do now is to turn the fan off before cranking up the engine. I do this old school thing in hope of protecting the vent/ac unit and to keep the battery lives longer. Now my question is: do I really need to turn it off before cranking or I'm just over protecting??? |
Read post #5
|
who ever said programing the memory seat or key is wrong.
i personally tested it and it does not stop the fan if u program seats with fan off. |
Quote:
You appear to be talking about the ventilation fan, not the AC. |
just have this coded and that's all . That's what I did. There is no other alternative
|
Old school thing? Never heard of doing what you describe. My guess is
BMW R&D has taken all that into consideration. Just let the system do it's thing. Everything will be fine/or not. Just fix it when it breaks...:thumbup: Quote:
|
FYI...if you have the auto climate system (IHKA) versus the manual system (IHKR)...then the HVAC fan is designed to come on, in most cases, to not only circulate air within the cabin...but to also allow the microfilters to remove pollen & dust as well. This feature is probably loved by those that have allergies. :)
For those who find this small feature of the IHKA control panel annoying...without finding some type of coding with DIS or INPA etc to stop it...the best you can do is press the FAN SPEED button until all of the dashes " -" are down to one...then lift your finger and press the fan speed button one more time. This will turn the HVAC system completely off. If you come back to the car before 16 minutes (yeah, the ol' GO TO SLEEP time interval)...the system will still be OFF when you start the car. If you are away from the car longer than this small time frame...the system will turn itself on automatically. BUT...since the system is out of the AUTO FAN SPEED MODE...the blower will be at the LOWEST setting...thus all it takes is ONE PRESS of the fan speed button and the system will be OFF again. I know for some...even this simple step of having to press the button (even once) may still find this totally annoying...but that's what you can do if you want to keep the AUTO climate control system off. Or...you can trade your X5 in and get one that has the manual IHKR system. :) (total control of the HVAC fan/blower if you have this IHKR control panel...which also comes with a different HVAC system which uses bowden cables to open/close the air flaps/adjust temperature/controls air speed/etc) http://i19.ebayimg.com/05/a/000/77/47/e90f_4.JPG |
you are totally right Qsilver. I was surprised after coding to find the vent auto operational again.shutting it off, taking the key off then starting the engine again, the fan didn't work. The same if i get off the car then get back shortly, the vent still off. after a certain time, the vent will auto run again
|
Quote:
any reason why it would do this or is it a faulty climate control? |
Quote:
|
Wow, almost a year since I posted this. My original point deals with the AC actually cooling the car, not just fan running or the vent ventilating. My point is this: If I parked my car in the garage, turned off the AC (ie. click the '-' button until nothing is ON), turned off the engine, removed the keys, then the next morning when I wake up and start the car, it should NOT have the AC, Fan, Vent running. Yet every day, regardless if I want the AC or Fan to run, it will run. I would have to click the '-' button again to get it to stop. Only 9 out of 12 months do I have to worry about this, but it is still annoying since I expect the BMW to remember what I did last. And speaking of annoying, why in the hell couldn't BMW have a OFF button and not this stupid '-' button that I have to click multiple times to shut the unit down?
|
Quote:
Do a search for for both..."failing IHKA" & "failing FSU/FSR" (final stage unit/final stage resistor) which is one of the most common HVAC issues on the e53/e39/e46. This final stage resistor controls the fan/blower and it's ability to regulate (run from low to high etc). A failed FSR/FSU can have symptoms of coming on all by itself even after the engine has been turned off...to not coming on at all...or operating erratically by going from high to low to high...or shutting off, then coming back on etc. Again, this is a much discussed topic...so much so that you can google "BMW FSR e53" or "BMW FSU e53" and get plenty of results. Good luck. |
I see all the functions work pretty good it remembers the last setting I put it on but it won't shut off can the on I got now be fixed or I'm looking to get another one
|
Again, you need to determine if the issue is the IHKA...or if its a failing FSR/FSU. And if you're gonna throw money at parts without a proper diagnostic approach (paying a dealer or indy...or buying/using aftermarket software/hardware)...then the FSR/FSU is cheaper & has a higher probability rate at being the culprit.
Please don't take the paragraph above as a slam...it's a basic reality with many BMW owners (myself included) with this issue. You can look at/read about the many FSR/FSU threads and determine that it is most likely your same issue...and replace it (without spending more money for proper diagnostics). You could win and it be the issue...or you could lose and it could be something else (like the IHKA). |
Quote:
|
There is no trick...and the IHKA (auto climate control system) vs the IHKR (manual climate control system) was referenced in Post #19.
The IHKA (off) operating parameters was also discussed in post #19 describing how & when turning off the blower fan...it will remain off if you come back and start the car within approx 16 minutes...versus coming back at a longer time interval....and the AUTO function design elements will turn the system back on at the lowest setting. If you still desire the system totally off...then all it takes is ONE PRESS of the fan speed button to turn the system back off. Again, if you do NOT want this feature or find it annoying to press the button one time to turn it back off...then the answer is to buy an X5 or trade for one with the IHKR climate system. :) (hopefully no one takes this reply as being mean or flippant...its not intended to be so...its just a reiteration of what was explained in post #19). |
You shutoff the air by turning the fan speed down to zero.
|
Personally, the behavior I want is that the system starts the next time at whatever settings I left it in last time. If off, then remain off. If on at high speed and max cold, then come on at high speed and full cold. I WANT to make the setting changes instead of having a car that thinks it knows what I want it to do before I do it. How come this is not the default operation?
|
Quote:
I read on an M3 forum site that if you press the M memory on the seat prior to turning off X5 that it may remember the last setting of the aircon/fan speed, gonna give it a try....nit sure it will apply to the X5 and thanks to Q7silvers feedbacj and all |
That's how my E46 climate control works. It keeps the last setting. My E53 always turns on. There must be a coding to change this behavior...?
Quote:
|
Quote:
|
I'm gonna be watching my X5 for this. I don't remember exactly how the E46 worked for my kid, but I recall that I thought it annoyed me. I bought an X5 on 02/16, and I will be looking to see if the life support system is as annoying.
|
I never found an answer to a permanent "off" feature upon start up. So, what I just got in the habit of doing is as soon as I turn my key to position two I turn off the vent/fan system and then turn the car on.
|
I will admit I haven't studied this entire thread, so I may be repetitive...
I never have A/C 'on', in any car I've owned, in 50+ years of cars. On our '01 3.0 X, I usually have the vent 'on', low fan speed, when I start car. Then, if I don't use A/C, it stays in that mode or whatever non-A/C mode I use on the drive, and then whatever non-A/C setting on turn off & next start. When I want A/C ,I hit the snowflake button and I have A/C... When I am running with A/C on, I turn it off as I climb the mtn road I live on, and after parking, it is simply on vent position I want, fan speed I want and no A/C. Dunno why this comes up here on the jukebox so often... If one likes 'auto' HVAC, great. If one feels that constant 'auto' (A/C), is good for seals or compressor, great. I like manual, and we have the step up from basic HVAC system in our '01. 13 1/2 yrs & 98k miles later: the air is freezer cold, no compressor hiccups, etc. But, I only run A/C when I want air, or defrosting. GL, mD |
Quote:
|
hey guys I fixed the problem by replacing the heat control
|
This feature is coded. I disabled it on my E53 with IHKA. The "feature" is enabled from the factory to always turn the blower on at minimum speed after the vehicle goes to "sleep" even if you manually turned the system completely off. There is also a "feature" coded that always turns the AC on and turns off recirculate regardless of the last setting when the vehicle was turned off.
If it bothers anyone that much, the best solution is to google NCS Expert, NCS Dummy, buy a cable, and code it off. It is not a Car/Key Memory programmable feature, so the dealer will be of no help. |
Only way I know of to do it is turning the ignition to the most onward position, turning off the vents, and then starting the car. I believe it works everytime but I usually just fire it up and turn it off right away on warm up because I don't remember to do it with ignition on.
|
Quote:
hmmm gotta look into this a bit, and am a bit of novice but want to code this out ...@iansanderson was it difficult to do ? |
Bump. Has anyone ever resolved this? I took a look at the coding options for IHKA on NCSExpert and haven’t seen anything that could be disabled.
|
1 Attachment(s)
For anyone who's had to replace a worn/broken blower motor, this auto-on fan thing is annoying. I don't want to ever have to do that job again, so I manually turn off the fan every time I start my X5. Has coding been successful for anyone?
|
try changing
GEBL_OFF_MODE |
Never running the fan is not likely to result in the desired outcome. If you bought a quality part it will run the remaining life of that car even if running half speed. Not running will likely cause problems with the bearings that will generate crazy amounts of noise when you actually need the fan. You will port yourself through plenty of discomfort that m you went through significant effort to avoid by replacing the blower. You fixed it: use it.
|
All that said one of the first things I coded on our E70s was to not turn the AC on every time I hit the auto button and to leave the circulation where I left it. (that bit me though when I accidentally switched to recirc only and left it for a week or more before I figured out why my ventilation sucked)
|
| All times are GMT -4. The time now is 09:43 PM. |
vBulletin, Copyright 2026, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.0
© 2017 Xoutpost.com. All rights reserved.