Mysterious rubber circle next to fuel cap—what is it?

Bugs Meany · 10-07-2022, 06:08 PM

Circled in yellow. It’s soft rubber and if I press on it a little bit it gives way. (I didn’t want to poke too hard.) I live in the U.S. and it’s a regular ol’ petrol engine.

I checked the manual, of course, but the diagram doesn’t show anything there. If there’s anyone who’d know what it is, what it’s for, it would be you guys.

Joebie · 10-07-2022, 06:12 PM

I dont know this for sure, but my guess is that's where you put in DEF on diesel models.

Burrcold · 10-07-2022, 06:19 PM

Quote:

Originally Posted by Joebie

I dont know this for sure, but my guess is that's where you put in DEF on diesel models.

That's exactly right. It's for the DEF...parts bin sharing between models.

Bugs Meany · 10-07-2022, 10:54 PM

That was fast! Thanks.

Joachim · 10-08-2022, 04:37 AM

Thank you all!
This is a feature I always wanted to know about* (*but was afraid to ask)

Honestly, I didn't know about it but cared sometimes.

Have a nice weekend!

HighlandPete · 10-08-2022, 12:13 PM

Quote:

Originally Posted by Burrcold

That's exactly right. It's for the DEF...parts bin sharing between models.

Here's the Diesel parts.

Burrcold · 10-08-2022, 12:15 PM

Quote:

Originally Posted by HighlandPete

Here's the Diesel parts.

Yes, it's opened up if you had a diesel model.

Bugs Meany · 10-08-2022, 02:01 PM

Quote:

Originally Posted by Joachim

Thank you all!
This is a feature I always wanted to know about* (*but was afraid to ask)

I’m new but this is a great forum. Very “Don’t be afraid to ask.”

Btw, we’ve had four BMWs (X2-4) in the family and I’ve never seen this part. Does mine have it because the 2GC is related to the Mini?

Burrcold · 10-08-2022, 02:47 PM

Quote:

Originally Posted by Bugs Meany

I’m new but this is a great forum. Very “Don’t be afraid to ask.”

Btw, we’ve had four BMWs (X2-4) in the family and I’ve never seen this part. Does mine have it because the 2GC is related to the Mini?

No, the G series (3 Series) has the "dummy DEF" opening as well.

10-07-2022, 06:08 PM	#1
Bugs Meany Enlisted Member 42 Rep 39 Posts Drives: 2022 BMW 228i GC xDrive Join Date: Jul 2022 Location: Boston, MA iTrader: (0)	Mysterious rubber circle next to fuel cap—what is it? Circled in yellow. It’s soft rubber and if I press on it a little bit it gives way. (I didn’t want to poke too hard.) I live in the U.S. and it’s a regular ol’ petrol engine. I checked the manual, of course, but the diagram doesn’t show anything there. If there’s anyone who’d know what it is, what it’s for, it would be you guys.
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10-07-2022, 06:12 PM	#2
Joebie Grandmaster 937 Rep 890 Posts Drives: 2018 ///M2 6MT Join Date: Dec 2014 Location: St. Louis iTrader: (0)	I dont know this for sure, but my guess is that's where you put in DEF on diesel models. __________________ Daily - 2018 Alpinweiß ///M2 6MT Exec Rain/Snow/Winter - 2011 328i 6MT Sedan - Black on Black, Sport Package Sold, But Not Forgotten - 2009 135i 6MT - Black on Black, M-sport, JB4
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10-07-2022, 10:54 PM	#4
Bugs Meany Enlisted Member 42 Rep 39 Posts Drives: 2022 BMW 228i GC xDrive Join Date: Jul 2022 Location: Boston, MA iTrader: (0)	That was fast! Thanks.
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10-08-2022, 04:37 AM	#5
Joachim Private First Class 491 Rep 167 Posts Drives: M4 Competition X-Drive [2022] Join Date: Sep 2022 Location: Germany iTrader: (0)	Thank you all! This is a feature I always wanted to know about* (*but was afraid to ask) Honestly, I didn't know about it but cared sometimes. Have a nice weekend!
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