07-21-2020, 12:59 PM | #1 |
Registered
4
Rep 3
Posts |
No air flow from vents
Hello,
I have a 2015 F30 N55 & Yesterday I made a four hour drive home in some pretty hot weather. So I had the AC going strong the whole way home. Everything worked perfectly fine. I stopped home for a few hours. When I proceeded to get get back in my car a few hours later I get no sort of air flow / noise when trying to activate the air conditioning. No fan noise, no AC noise, no air flow. I have tried to get back in a few times. Still no air. I’ve tried AC, no AC, and heat on all different settings. Nothing will make any noise or produce any air. On one drive I thought I felt some cold air at my feet but was hard to tell while wearing shoes. I check 4 fuses that all seemed fine. Forget the exact numbers, maybe I look at the wrong ones ? Any idea what could cause this ? Bad fan maybe? Any help would be greatly appreciated, I just got this car two months ago. Hate to see problems already. TIA |
07-21-2020, 01:19 PM | #2 |
Major
350
Rep 1,246
Posts |
I had a similar problem with freezing AC components in hot and muggy weather.
Let it sit overnight, preferably in a garage, and see if it's better in the morning. If it is, there is a service bulletin for this problem. |
Appreciate
0
|
07-22-2020, 07:50 AM | #3 |
Registered
4
Rep 3
Posts |
It has sat for two full days. Still nothing. Assuming it’s the blower, but into the dealership we go.
Last edited by jonathancavey; 07-22-2020 at 07:51 AM.. Reason: Typo |
Appreciate
0
|
07-22-2020, 09:54 AM | #4 |
New Member
2
Rep 10
Posts |
Same issue here. A little research found several older posts on this issue. Apparently they (BMW) know of the issue and can reprogram the A/C controls to prevent it.
Sure seems like an iced up evaporator coil, resulting in loss of flow. Typically a temperature sensor in the coil to shutdown the compressor when it approaches freezing temps. The former R134a systems typically ran at pressures that approached 32 degF on the low side, but not below freezing. Need to educate myself on the new refrigerant's properties. Car is going in tomorrow, I'll update with their findings. |
Appreciate
0
|
07-22-2020, 10:01 AM | #5 | |
Captain
257
Rep 810
Posts |
Quote:
__________________
MG F30 M-Sport 6mt FBO w/ MHD stage 2 plus (PWG), ST XA Coilovers, 19" VMR V804.
|
|
Appreciate
0
|
07-23-2020, 11:26 AM | #6 |
New Member
2
Rep 10
Posts |
Update: Dealer checked, nothing found (of course it wasn't 100 degF today).
Note on report: "D1, single time fault for compressor shutdown due to high pressure caused by high ambient temperature & overworking of the AC system" Doesn't really explain the loss of air flow, despite the fan running at high speed. |
Appreciate
0
|
07-24-2020, 11:35 AM | #7 |
AutoPilot
105
Rep 88
Posts
Drives: 19 X1,18 M550i,15 X5,14 328d
Join Date: Feb 2018
Location: Texas
iTrader: (0)
Garage List 2011 Mercedes GL550 [0.00]
2019 BMW X128i [0.00] 2015 X5 XDrive35i [0.00] 2018 M550i [0.00] 2014 328d [0.00] |
Known issue. The fix is a $1.42 part. There is also a TIS on the fix. The DIY takes about 15 minutes.
Part: https://www.ecstuning.com/b-genuine-...t/64119350495/ TIS: https://www.google.com/url?sa=t&sour...4RcEqPMGlfdoJm Last edited by kwstandard; 07-24-2020 at 04:35 PM.. |
Appreciate
1
idopullups45.50 |
07-24-2020, 02:01 PM | #8 |
New Member
2
Rep 10
Posts |
Thanks for that! Found good descriptions of this issue & solution, on the F80 board. I'll pick up the part (evap temp sensor spacer) and install it tonight.
|
Appreciate
0
|
07-24-2020, 03:40 PM | #9 |
AutoPilot
105
Rep 88
Posts
Drives: 19 X1,18 M550i,15 X5,14 328d
Join Date: Feb 2018
Location: Texas
iTrader: (0)
Garage List 2011 Mercedes GL550 [0.00]
2019 BMW X128i [0.00] 2015 X5 XDrive35i [0.00] 2018 M550i [0.00] 2014 328d [0.00] |
Sure. BTW, the "special BMW tool" indicated in the TIS for removal of the sensor turned out to my forefinger and thumb... The sensor just pulls straight out - no clips to release at all. There are 2 friction tabs on the inside sides of the sensor itself. Just pull it straight out.
|
Appreciate
0
|
07-24-2020, 07:04 PM | #10 | |
Major General
1839
Rep 5,173
Posts |
Quote:
I've had that when I kept the max fan speed too low. Now I don't go below mid, and never had had an issue. |
|
Appreciate
0
|
07-25-2020, 12:00 PM | #11 |
Enlisted Member
29
Rep 41
Posts |
Interesting little spacer they developed, only moves the sensor out about 1/8”. Not an easy spot to access (6’-3” old guy).
Surprising they would run the evap temp that low and freeze it. The new refrigerant is nearly identical to R134a’s performance curves, especially at the lower pressures/temps. Normally R134a systems, the low side pressure equates to ~40 degF. Have to dig a little into their operating parameters. |
Appreciate
0
|
08-05-2020, 08:30 AM | #12 |
Registered
4
Rep 3
Posts |
Forgot to reply and update. Took it into the dealer, still no air near closing. They started it the next morning and it worked. Strange but has been running well with no issues yet. Will wait for the problem to replicate before replacing anything.
|
Appreciate
0
|
08-12-2020, 04:36 PM | #13 | |
Private
28
Rep 68
Posts |
Quote:
Also, if anyone has had this work done by the dealer, what did they charge? thanks! |
|
Appreciate
0
|
08-15-2023, 12:15 PM | #14 |
New Member
5
Rep 24
Posts |
slightly different problem - right side doesn't blow
The vents on the right side do not blow. I checked the manual controls on the vents (dials) and that is not it. I tried turning off the heating/air conditioning by setting the fan speed to zero and also turning off the car. Both right and left are always set to the same temperature. I tried many different permutations over the past 2 months.
Is there some fuse that I can check? If so where and which one? Currently, I often drive alone. If there is a front passenger, then I direct the center left vent towards them and the far left vent towards me. The cabin air filter was last changed about 15,000 miles ago. |
Appreciate
0
|
08-15-2023, 05:25 PM | #15 | |
Lieutenant General
3790
Rep 10,545
Posts |
Quote:
__________________
"Drive more, worry less. "
435i, MPPK, MPE, M-Sport Line |
|
Appreciate
0
|
09-05-2023, 08:22 PM | #16 | |
New Member
0
Rep 8
Posts |
Quote:
Sorry to hear about the AC issue on your F30 N55. It's frustrating when problems arise shortly after getting a car. It could indeed be a faulty fan or perhaps a problem with the AC compressor. It's best to have it checked by a professional mechanic to diagnose and fix the issue. Good luck with the repair! |
|
Appreciate
0
|
Post Reply |
Bookmarks |
Tags |
335i, air conditioning, air conditioning problem, f30, fan, heat, hot, n55, no air |
|
|