Any idea what this cap goes to?

fndrplayer13 · 04-12-2021, 10:26 AM

Hi all, I was doing my spring deep-clean on my x30e this weekend, and I found this cap sitting just underneath the bonnet. I havent popped the hood since I got it back from recall service in Jan/Feb timeframe.

My guess is this is nothing, or likely a cap to some new component that was installed, but I figured I'd post and see if anybody has any idea

Coi · 04-12-2021, 03:01 PM

Looks to me like a dust cap for the valve for filling/checking the air conditioning refrigerant. I'm not sure where that would be located on the X3 hybrid though. AC lines are usually relatively thin metal lines, so you could try looking around to see if there's an uncovered valve on one of those that the cap fits to.

Admiral · 04-12-2021, 04:17 PM

It looks like my AdBlue tank cap, but my G01 is a diesel

zibbit · 04-12-2021, 04:41 PM

Check your A/C lines. That's a cap that goes on the refuelling port.

You'll see a shinny metal block on the firewall (near the center) with some bare metal tubes leading away from it. Follow those tubes and there'll be two ports somewhere along their length.

BMWZ4 · 04-12-2021, 06:12 PM

Ask freshxdough

VipinLJ · 04-12-2021, 10:08 PM

The only thing I can think of that the cap covers is the thing marked in the red circle (pic is from my G20 330i and it has a grey cover instead). I'm guessing the G01 X3 should have something similar? I haven't checked the engine bay of our new X3 yet.

fndrplayer13 · 04-13-2021, 08:31 AM

Thanks everyone! I will have a look shortly and let you know what I discover.

fndrplayer13 · 04-13-2021, 03:39 PM

Alright, mystery solved, it does indeed attach to whatever that metal line is coming out of the engine area

04-12-2021, 10:26 AM	#1
fndrplayer13 First Lieutenant 205 Rep 339 Posts Drives: 2021 X3 30e / 2018 Model 3 Join Date: Aug 2020 Location: Chicago, IL iTrader: (0)	Any idea what this cap goes to? Hi all, I was doing my spring deep-clean on my x30e this weekend, and I found this cap sitting just underneath the bonnet. I havent popped the hood since I got it back from recall service in Jan/Feb timeframe. My guess is this is nothing, or likely a cap to some new component that was installed, but I figured I'd post and see if anybody has any idea Attached Images
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04-12-2021, 03:01 PM	#2
Coi First Lieutenant 291 Rep 323 Posts Drives: 21 X3 M40i, 07 Z4MR Join Date: Mar 2021 Location: Cal iTrader: (0)	Looks to me like a dust cap for the valve for filling/checking the air conditioning refrigerant. I'm not sure where that would be located on the X3 hybrid though. AC lines are usually relatively thin metal lines, so you could try looking around to see if there's an uncovered valve on one of those that the cap fits to.
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04-12-2021, 04:17 PM	#3
Admiral Lieutenant 776 Rep 593 Posts Drives: 2019 BMW X3 2.0D X Line G01 Join Date: Nov 2019 Location: Cymru UK iTrader: (0)	It looks like my AdBlue tank cap, but my G01 is a diesel
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04-12-2021, 04:41 PM	#4
zibbit Second Lieutenant 149 Rep 240 Posts Drives: '18 X3 M40i Join Date: Jul 2016 Location: Victoria iTrader: (0)	Check your A/C lines. That's a cap that goes on the refuelling port. You'll see a shinny metal block on the firewall (near the center) with some bare metal tubes leading away from it. Follow those tubes and there'll be two ports somewhere along their length.
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04-12-2021, 06:12 PM	#5
BMWZ4 Major General 1913 Rep 5,110 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	Ask freshxdough __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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04-12-2021, 10:08 PM	#6
VipinLJ Petrolhead 1949 Rep 3,521 Posts Drives: ‘20 330i,‘16 X3,‘18 SQ5,‘17 A7 Join Date: Nov 2019 Location: Illinois iTrader: (2)	The only thing I can think of that the cap covers is the thing marked in the red circle (pic is from my G20 330i and it has a grey cover instead). I'm guessing the G01 X3 should have something similar? I haven't checked the engine bay of our new X3 yet. Attached Images __________________ Current: 2020 BMW 330i xDrive 2018 Audi SQ5 Prestige 2017 Audi A7 Prestige
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04-13-2021, 08:31 AM	#7
fndrplayer13 First Lieutenant 205 Rep 339 Posts Drives: 2021 X3 30e / 2018 Model 3 Join Date: Aug 2020 Location: Chicago, IL iTrader: (0)	Thanks everyone! I will have a look shortly and let you know what I discover.
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04-13-2021, 03:39 PM	#8
fndrplayer13 First Lieutenant 205 Rep 339 Posts Drives: 2021 X3 30e / 2018 Model 3 Join Date: Aug 2020 Location: Chicago, IL iTrader: (0)	Alright, mystery solved, it does indeed attach to whatever that metal line is coming out of the engine area Attached Images
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