BMW X3
Welcome to the ultimate BMW X3 community
95KVIEWS
160REPLIES
169APPRECIATES
73ACTIVE PEOPLE
03-04-2026LAST POST
10-13-2022
10-13-2022
509er user avatar
509er
Lieutenant
596 REP
411 POSTS
lfdal54 wrote
It's really not that hard. I'm old and did mine. I thought it was easier than the one in my wife's F31 wagon. And way easier than in my ex's 2012 Nissan Versa.

But - if it's outside your comfort zone, I agree, don't mess with it. Every time I start a repair, I do so with the acceptance that it might get flat bedded to the dealership in the worst-case scenario.
Haha. That's a good visual!

Wow - after looking at those PDF instructions, I'm amazed how complicated they've made it. As someone said earlier in this thread, replacing the CAF in my E90 was easy peasy - under the cowl in the engine bay.
Appreciate0
10-13-2022
10-13-2022
freshxdough user avatar
freshxdough
BMW Master Elite Tech | Gen 5 HV | HV Specialist
4,117 REP
4.6K POSTS
deleted__a404eff702eba7a wrote
freshxdough wrote
Worst part about it is if you accidentally end up pushing the recirculating flap past it's end stop resulting in poor air flow and even a slight air resistance/whistle that can be heard during fan operation. Ask me how I know because I did it last week when I serviced my microfilter. I've done thousands of micro filters and the G01 apparently is the only one you can possibly do this with. Yesterday I had to remove the complete glove box, passenger knee airbag and the blower fan to be able to access the flap and flip it back over. This is a known issue and there is an SIB for it. According to the SIB replacement of the complete air conditioning box is necessary. I wasn't about to take my car back to my own dealer for that lol.
How does even happen
The air flap can be caught when installing the new microfilter and the flap can be pushed past it's end stop. It's not uncommon and even if you're doing everything correctly, you could catch it and push the microfilter up and end up rotating the flap.
Appreciate1
10-13-2022
10-13-2022
freshxdough user avatar
freshxdough
BMW Master Elite Tech | Gen 5 HV | HV Specialist
4,117 REP
4.6K POSTS
Poppyboy wrote
It’s incredible how gullible and ignorant people can be by letting stealerships screw them over on these routine items. Samcrac just did a video on his brother’s BMW. His stealership wanted over $400 to do this! It took me less than 15 minutes and $30 to change out on our ‘19 30i.
https://www.amazon.com/Cabin-Filter-PC99458C-Fits-2018-20/dp/B07W52W9D8/ref=mp_s_a_1_3?crid=SUQUJ6V054IQ&keywords=x3+cabin+air+filter&qid=1665677318&qu=eyJxc2MiOiIyLjUzIiwicXNhIjoiMS44NCIsInFzcCI6IjEuNTkifQ%3D%3D&sprefix=x3+cabin+air+filter%2Caps%2C209&sr=8-3
Not everyone knows how to use a screwdriver. Or has any kind of mechanical common sense.
Appreciate0
01-12-2023
01-12-2023
russog01 user avatar
russog01
Registered
2 REP
2 POSTS
Hi all. Planning to do replace the cabin filter on my 2019 x3 but confused on which mode the hvac should be in….The discussion in this threads indicates the hvac should be in fresh air mode but looks like bmw guidance (SIB 64 03 21) is now the opposite, put the hvac in recirculating mode (led on). Here is article on this topic too: https://www.import-car.com/bmw-diagnostics-low-airflow-after-cabin-air-filter-replacement/

Anyone recently replace their cabin filter with recirculating led on without any issues?

Thanks
Appreciate1
01-12-2023
01-12-2023
mattsheng user avatar
mattsheng
Captain
United_States
1,155 REP
680 POSTS
russog01 wrote
Hi all. Planning to do replace the cabin filter on my 2019 x3 but confused on which mode the hvac should be in….The discussion in this threads indicates the hvac should be in fresh air mode but looks like bmw guidance (SIB 64 03 21) is now the opposite, put the hvac in recirculating mode (led on). Here is article on this topic too: https://www.import-car.com/bmw-diagnostics-low-airflow-after-cabin-air-filter-replacement/

Anyone recently replace their cabin filter with recirculating led on without any issues?

Thanks
The SIB you referenced is correct.
Appreciate2
01-16-2023
01-16-2023
russog01 user avatar
russog01
Registered
2 REP
2 POSTS
Thanks. I found it easy to replace the cabin filter except for contorting myself under he glove box.

Also glad I did this myself because noticed the drainage hose was slightly kinked from not being placed in its cradle last time the filter was changed. Car is a CPO so this was likely done by a dealer tech.
Appreciate0
01-16-2023
01-16-2023
nbrewno user avatar
nbrewno
Private First Class
United_States
152 REP
102 POSTS
I’m assuming nobody here has changed the cabin filter in a Volvo S40? There isn’t enough room to slide it out so you have to remove the gas pedal assembly. This sounds like a piece of cake compared to that one.
Appreciate0
01-17-2023
01-17-2023
freshxdough user avatar
freshxdough
BMW Master Elite Tech | Gen 5 HV | HV Specialist
4,117 REP
4.6K POSTS
russog01 wrote
Hi all. Planning to do replace the cabin filter on my 2019 x3 but confused on which mode the hvac should be in….The discussion in this threads indicates the hvac should be in fresh air mode but looks like bmw guidance (SIB 64 03 21) is now the opposite, put the hvac in recirculating mode (led on). Here is article on this topic too: https://www.import-car.com/bmw-diagnostics-low-airflow-after-cabin-air-filter-replacement/

Anyone recently replace their cabin filter with recirculating led on without any issues?

Thanks
Recirc mode. Initially the SIB said fresh air. Then it was corrected.
Appreciate0
01-30-2023
01-30-2023
mike murphy user avatar
mike murphy
New Member
10 REP
21 POSTS
This is one of the easiest things I’ve done on any car!

Those that are having trouble and cannot stretch, bend, and flex their bodies would be a lot better off - health-wise - in stretching their bodies more. I’m not judging, but just saying that staying fit and healthy involves being flexible, and over time, especially as we age, it’s going to add significant longevity to stay flexible.

Here’s a tip: kneeling on the driveway with the door wide open helps. And pushing the seat all the way back and flat as possible while laying on the seat on your back makes this much easier!
Appreciate0
01-30-2023
01-30-2023
Bob in IL user avatar
Bob in IL
Major
963 REP
1.1K POSTS
mike murphy wrote
This is one of the easiest things I’ve done on any car!

Those that are having trouble and cannot stretch, bend, and flex their bodies would be a lot better off - health-wise - in stretching their bodies more. I’m not judging, but just saying that staying fit and healthy involves being flexible, and over time, especially as we age, it’s going to add significant longevity to stay flexible.

Here’s a tip: kneeling on the driveway with the door wide open helps. And pushing the seat all the way back and flat as possible while laying on the seat on your back makes this much easier!
I have an appointment tomorrow for routine service and have been debating whether or not to have them change the filter.
This convinced me to have it done. :) If I was younger, I'd definitely do it myself.
Appreciate0
01-31-2023
01-31-2023
rob175 user avatar
rob175
Major
United_States
993 REP
1.4K POSTS
So just to clarify once and for all.....should the system be set to RE-CIRCULATE or FRESH AIR before you begin replacing the Cabin air filter???

Thx
Appreciate1
01-31-2023
01-31-2023
X3rd Time Is a Charm user avatar
X3rd Time Is a Charm
Major
United_States
3,332 REP
1.1K POSTS
rob175 wrote
So just to clarify once and for all.....should the system be set to RE-CIRCULATE or FRESH AIR before you begin replacing the Cabin air filter???

Thx
This ^^^^. The conversation went back and forth and I don’t think anyone agreed with what position it should be in . I think Freshxdough said Recirculate mode ?? I’ve done it once and must have got lucky because it seems to be working fine.Being in my 60’s ,I didn’t really find it hard to do. Especially since the dealer wanted to charge me over $600.00 dollars to do both , the air cabin filter and air filter.I just don’t remember which mode I had it in .
Appreciate0
01-31-2023
01-31-2023
COM40 user avatar
COM40
Lieutenant
639 REP
554 POSTS
nbrewno wrote
I’m assuming nobody here has changed the cabin filter in a Volvo S40? There isn’t enough room to slide it out so you have to remove the gas pedal assembly. This sounds like a piece of cake compared to that one.
I had a S40 years ago. That air filter was a royal PITA. Mine was lowered a bit and resulted in an extremely awkward replacement position. I.e. contorting yourself upside down like some weird yoga pose for a good 30 min, which left a sore back the rest of the day.

If the X3 is anything like that I'll just have a shop do it.
Appreciate1
01-31-2023
01-31-2023
kevinkay user avatar
kevinkay
Lieutenant
United_States
306 REP
513 POSTS
and for those who have never even tried yet - there are 2 torque screws you need to remove.....
Appreciate0
01-31-2023
01-31-2023
rob175 user avatar
rob175
Major
United_States
993 REP
1.4K POSTS
Bump.....

So just to clarify once and for all.....should the system be set to RE-CIRCULATE or FRESH AIR before you begin replacing the Cabin air filter???

Thx
Appreciate0
02-10-2023
02-10-2023
Replicant user avatar
Replicant
Second Lieutenant
100 REP
252 POSTS
rob175 wrote
Bump.....

So just to clarify once and for all.....should the system be set to RE-CIRCULATE or FRESH AIR before you begin replacing the Cabin air filter???

Thx
Make sure recirculate is OFF(Correcting myself here. I did it off and everything is fine, but I was corrected below with the official BMW guidance )Took me all of 10 minutes, I don't know why people make such a big deal about this. I would never claim it is convenient, but it's somewhere between an easy engine air filter swap and an oil change.
Appreciate0
02-10-2023
02-10-2023
Alias1431 user avatar
Alias1431
Colonel
United_States
857 REP
2K POSTS
I thought it was said that recirculate should be ON?
Appreciate0
02-10-2023
02-10-2023
dinan5m3 user avatar
dinan5m3
Colonel
4,586 REP
2.1K POSTS
Replicant wrote
Took me all of 10 minutes,

it's somewhere between an easy engine air filter swap and an oil change.
10 minutes to change an oil?

:bow:

image.png
Appreciate2
02-10-2023
02-10-2023
mattsheng user avatar
mattsheng
Captain
United_States
1,155 REP
680 POSTS
rob175 wrote
Bump.....

So just to clarify once and for all.....should the system be set to RE-CIRCULATE or FRESH AIR before you begin replacing the Cabin air filter???

Thx
The air recirculation should be ON before replacing the cabin air filter. Air recirculation ON makes sure the air flap is shut so the filter can't push it out of position. See the attached repair instruction or SIB 64 03 21.
An image attached to this post, provided by the poster
Appreciate2
02-10-2023
02-10-2023
Replicant user avatar
Replicant
Second Lieutenant
100 REP
252 POSTS
My mistake then. I thought guidance from BMW was still recirc off. I guess I got lucky then, I did it with recirc off and haven’t had any issues. Though to me having recirc on would make more sense from a mechanical perspective.
Appreciate0
02-10-2023
02-10-2023
Replicant user avatar
Replicant
Second Lieutenant
100 REP
252 POSTS
dinan5m3 wrote
10 minutes to change an oil?

:bow:

image.png
I meant the difficulty not the time.
Appreciate0
02-10-2023
02-10-2023
dinan5m3 user avatar
dinan5m3
Colonel
4,586 REP
2.1K POSTS
Well, in that case...

DIY to save $180+tax
Aches and pains afterwards - priceless :D
Appreciate3