2018 F83 AC Output Diminished…

[ajh77]

Today I drove my 2018 F83 (late model 17) around with the ac on 60, not on maximum air output, for roughly 4 hours and at one point I noticed the airflow greatly decreased so I put the AC on max setting since I got hot and barely any air came out. I turned off the ac for 20 mins then back on and it worked.

Isn't there a sb on this issue ?

[jzhu625]

there's a TSB for it. i fixed mine... 2 ways to fix, add a clip from OEM as spacer between the sensor or programming.

[icegrill]

Just sell the car. Seems like all your posts are complaints about it. Maybe it's a lemon.

[Fat Goose]

Originally Posted by jzhu625

there's a TSB for it. i fixed mine... 2 ways to fix, add a clip from OEM as spacer between the sensor or programming.

Would a dealer update to the 2020 software istep include this programming update?

[N1rve]

Originally Posted by icegrill

Just sell the car. Seems like all your posts are complaints about it. Maybe it's a lemon.

I kinda agree with this.

[jayyp]

Originally Posted by N1rve

I kinda agree with this.

[jdarwin]

Originally Posted by Fat Goose

Would a dealer update to the 2020 software istep include this programming update?

No. I recently updated mine and the output still fell dramatically when on a road trip to Austin. It was around lunchtime so I just pulled into a restaurant and let it sit for an hour. No issues the remainder of the weekend. More or an inconvenience for me - not sure it's worth resolving since I don't drive the car long distances very often.

[Fat Goose]

Originally Posted by jdarwin

No. I recently updated mine and the output still fell dramatically when on a road trip to Austin. It was around lunchtime so I just pulled into a restaurant and let it sit for an hour. No issues the remainder of the weekend. More or an inconvenience for me - not sure it's worth resolving since I don't drive the car long distances very often.

Rog, looks like i’ll be purchasing the $1 adapter. Install doesn’t look too difficult

[2011ninja]

Originally Posted by ajh77

Today I drove my 2018 F83 (late model 17) around with the ac on 60, not on maximum air output, for roughly 4 hours and at one point I noticed the airflow greatly decreased so I put the AC on max setting since I got hot and barely any air came out. I turned off the ac for 20 mins then back on and it worked.

Isn't there a sb on this issue ?

I had the same issue.

It's a known problem easy fix.

My local BMW dealer was already aware; fixed under warranty as I slummed in a 340M loaner.

Felt like a very fast 330i

[Fat Goose]

Originally Posted by 2011ninja

I had the same issue.

It's a known problem easy fix.

My local BMW dealer was already aware; fixed under warranty as I slummed in a 340M loaner.

Felt like a very fast 330i

What did they do?

[2011ninja]

Originally Posted by Fat Goose

What did they do?

Was so long ago.

I think it had something to do with the temperature setting with the evaporator.

I'll find out and post the repair info.

That was definitely the issue:

Pulled from a prior post.
Dealer work order says "performed conversion to raise min evap temp", which they say is the fix.

[N1rve]

Originally Posted by 2011ninja

I had the same issue.

It's a known problem easy fix.

My local BMW dealer was already aware; fixed under warranty as I slummed in a 340M loaner.

Felt like a very fast 330i

I had a 330i as a loaner, I think it's a very fun balanced car. Can rev it up on surface streets and not go to jail unlike the M4 LOL.

[jdarwin]

Originally Posted by Fat Goose

Rog, looks like i’ll be purchasing the $1 adapter. Install doesn’t look too difficult

Let me know how that works - if cheap and easy fix, I'm in.

[vietboyx1115]

Originally Posted by jzhu625

there's a TSB for it. i fixed mine... 2 ways to fix, add a clip from OEM as spacer between the sensor or programming.

This. Just happened to me this past week in Dallas TX area when it was hitting 100 degrees finally. Dealer just put a spacer and some programming as jzhu625 stated.

[Fat Goose]

Originally Posted by vietboyx1115

This. Just happened to me this past week in Dallas TX area when it was hitting 100 degrees finally. Dealer just put a spacer and some programming as jzhu625 stated.

kubax86 Are you able to do this programming?

[Fat Goose]

@kubax86

[llvsixaxisvll]

Originally Posted by Fat Goose

kubax86 Are you able to do this programming?

Would love to get the programming done through trusted 3rd party. (Dealer wanted over $500 in diagnostic and coolant recheck/recharge fees) Another well known coder on here mentioned he isn't able to do it, fingers crossed for kubax.

[jzhu625]

Originally Posted by llvsixaxisvll

Would love to get the programming done through trusted 3rd party. (Dealer wanted over $500 in diagnostic and coolant recheck/recharge fees) Another well known coder on here mentioned he isn't able to do it, fingers crossed for kubax.

You can just add spacer WITHOUT programming

[llvsixaxisvll]

Originally Posted by jzhu625

You can just add spacer WITHOUT programming

I did it myself about a week ago, and no change. Seems like for some cars coding may be necessary.