Foot trunk release not working M Performance and other rear diffusers

Ehronius · 01-18-2016, 11:37 PM

I don't mind losing the function, I just don't like how it randomly opens when I pass by or when I already have the trunk open and I close it but keeps opening. So can this be coded off?

TooFan328i · 01-18-2016, 11:42 PM

Quote:

Originally Posted by Ehronius

I don't mind losing the function, I just don't like how it randomly opens when I pass by or when I already have the trunk open and I close it but keeps opening. So can this be coded off?

Ditto. Agreed!

itsdg · 01-19-2016, 04:12 AM

+1 Mine opens randomly quite often. Including in the pooring rain a few days ago resulting in a wet boot!!! (*Trunk..... I'm an Aussie!)
Thinking of changing diffusers bechause of this!

Mantii · 01-20-2016, 12:05 AM

I asked my service advisor about installing a cf diffuser and exhaust. He did mention that coding is updated after the cf diffuser install due to the things mentioned here. CF interferes with the sensor hence it is disabled.

M3 Piotr · 02-01-2016, 12:08 AM

I have OEM Carbon Fiber diffuser mounted. Just noticed that the kick trunk open function seems not to work. Tried about 20 times to get it to work. NOTHING. I'll be going back to the dealer, but wanted to see if anyone had any issues with their kick-trunk-open and diffusers. I called the CA, but he claims that it is because the diffuser is carbon and messing up the sensor not being able to pick up the foot motion.

:

Thanks for the replies and info!!!

Alvinized52 · 02-01-2016, 12:14 AM

Quote:

Originally Posted by M3 Piotr

I have OEM Carbon Fiber diffuser mounted. Just noticed that the kick trunk open function seems not to work. Tried about 20 times to get it to work. NOTHING. I'll be going back to the dealer, but wanted to see if anyone had any issues with their kick-trunk-open and diffusers. I called the CA, but he claims that it is because the diffuser is carbon and messing up the sensor not being able to pick up the foot motion.

Yep. This is a known issue. I sent mine back and got the Status Gruppe diffuser. That works with kick sensor.

JonnyM3 · 02-01-2016, 12:14 AM

Diffuser cancels out the option. Your car is fine.

Alvinized52 · 02-01-2016, 12:16 AM

Most CF diffusers wont work cuz the CF weave somehow blocks the sensor signals.

M3 Piotr · 02-01-2016, 12:16 AM

Quote:

Originally Posted by JonnyM3

Diffuser cancels out the option. Your car is fine.

Thanks. I would imagine that the OEM diffuser somehow wouldn't do that and BMW would get it to work. Not a biggie. Still open the trunk with the key anyway.

shadowyman · 02-01-2016, 02:07 AM

Thanks for this thread, I just cancelled my diffuser installation. Kick trunk open is very important to me and I don't want to miss that. I'll look into alternatives in the future. When design kills functionality, I'm not ok with that.

Colinv6 · 02-01-2016, 02:47 AM

Paint the standard diffuser. Looks great and keeps full functionality! Also saves you a fair bit of cash!

M3 Piotr · 02-01-2016, 03:17 AM

Quote:

Originally Posted by Colinv6

Paint the standard diffuser. Looks great and keeps full functionality! Also saves you a fair bit of cash!

It wouldn't help to paint it in my case anyway

It was already black.

Arcades · 02-01-2016, 04:27 AM

I have heard that Status Gruppe diffuser doesn't mess with the trunk's comfort access but I cannot personally confirm because I don't know.

But BMW has said that they know OEM interrupts the sensor. When you get it, most would warn you about it.

Vigilant · 02-01-2016, 06:42 AM

Known "issue" with replacement (non OEM) diffusers. I do like the idea of painting the diffuser an alternate color to retain functionality.

Jedi_M · 02-01-2016, 06:52 AM

Quote:

Originally Posted by Arcades

I have heard that Status Gruppe diffuser doesn't mess with the trunk's comfort access but I cannot personally confirm because I don't know.

But BMW has said that they know OEM interrupts the sensor. When you get it, most would warn you about it.

I just installed the Status Gruppe diffuser and can definitely confirm that it defeats the trunk comfort kick access. This diffuser blocks the signal just like all the other CF diffusers. I now use the trunk handle to open the trunk, which is no biggie for me.

jtodd_fl · 02-01-2016, 07:26 AM

Quote:

Originally Posted by Colinv6

Paint the standard diffuser. Looks great and keeps full functionality! Also saves you a fair bit of cash!

Love the car and a great pic. The very first thing I noticed, though, was that the footprints went to the "wrong" side of the car. UK FTW! The painted diffuser looks great.

Ehronius · 02-01-2016, 09:37 AM

About to get my kick access coded off because there are times I pass by the rear of the car and trunk opens. I'm guessing the diffuser messed with it as well

sunnyboy · 02-01-2016, 11:22 AM

Well, what I did was getting a cheap chinese knock-off of the M performance diffuser but made of reinforced plastic. Kick trunk works like a charm. You can also then wrap it in CF design, if you like that sorta stuff...

Arcades · 02-01-2016, 09:08 PM

Quote:

Originally Posted by Jedi_M

I just installed the Status Gruppe diffuser and can definitely confirm that it defeats the trunk comfort kick access. This diffuser blocks the signal just like all the other CF diffusers. I now use the trunk handle to open the trunk, which is no biggie for me.

Oh... well that's good to know I was going to do it to test.

Thank you.

Status Gruppe MNF · 02-02-2016, 12:07 AM

Quote:

Originally Posted by Jedi_M

I just installed the Status Gruppe diffuser and can definitely confirm that it defeats the trunk comfort kick access. This diffuser blocks the signal just like all the other CF diffusers. I now use the trunk handle to open the trunk, which is no biggie for me.

Yours is the first we have heard to not work. Every car we have tested on locally and others like posted above have worked with our diffusers.

Jedi_M · 02-02-2016, 09:46 AM

Quote:

Originally Posted by Status Gruppe MNF

Yours is the first we have heard to not work. Every car we have tested on locally and others like posted above have worked with our diffusers.

Yes, the main reason I got your diffuser in the first place was because others have posted that the trunk comfort kick access still worked after installation.

I really wanted to maintain this comfort access, but after installing the Status Gruppe CF diffuser, the trunk comfort kick access stopped functioning.
I assume each one is made individually, so there must be some variations in each diffuser in terms of thickness.

In my case, the comfort kick access stopped working so I would caution others interested in this diffuser that it may or may not work after installation as in my case.
I still like the design of the diffuser and just use the trunk handle to open the trunk.

jwzimm · 02-02-2016, 10:01 AM

As has been stated previously, you CANNOT install a conductive shield (CF is conductive) over an RF sensor and expect good results. The reason some CF diffusers might allow the CA feature to work is that they would be of inferior construction and the CF is very thin or possibly not genuine.

01-18-2016, 11:37 PM	#67
Ehronius First Lieutenant 159 Rep 315 Posts Drives: 2016 BMW M4/f82 YMB Join Date: Jan 2016 Location: Los Angeles iTrader: (0)	I don't mind losing the function, I just don't like how it randomly opens when I pass by or when I already have the trunk open and I close it but keeps opening. So can this be coded off?
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01-19-2016, 04:12 AM	#69
itsdg Private First Class 71 Rep 189 Posts Drives: F80 M3 Join Date: Aug 2015 Location: Melbourne, Australia iTrader: (0)	+1 Mine opens randomly quite often. Including in the pooring rain a few days ago resulting in a wet boot!!! (*Trunk..... I'm an Aussie!) Thinking of changing diffusers bechause of this!
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01-20-2016, 12:05 AM	#70
Mantii Lieutenant 315 Rep 462 Posts Drives: F80 M3/E46 M3 Join Date: May 2014 Location: Des Moines, IA iTrader: (3)	I asked my service advisor about installing a cf diffuser and exhaust. He did mention that coding is updated after the cf diffuser install due to the things mentioned here. CF interferes with the sensor hence it is disabled.
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02-01-2016, 12:08 AM	#71
M3 Piotr Lieutenant Colonel 402 Rep 1,858 Posts Drives: F80 M3 Frozen Black F87 M2 LBB Join Date: Apr 2007 Location: Florida, USA iTrader: (2) Garage List 2016 BMW F80 M3 [0.00] 2011 BMW E90 M3 (We ... [0.00]	Kick-trunk-open and diffuser issue I have OEM Carbon Fiber diffuser mounted. Just noticed that the kick trunk open function seems not to work. Tried about 20 times to get it to work. NOTHING. I'll be going back to the dealer, but wanted to see if anyone had any issues with their kick-trunk-open and diffusers. I called the CA, but he claims that it is because the diffuser is carbon and messing up the sensor not being able to pick up the foot motion. : Thanks for the replies and info!!! __________________ 2016 F80 M3 Frozen Black 2018 F87 M2 LBB Follow me on Insta: M3Piotr Last edited by M3 Piotr; 02-01-2016 at 12:18 AM.. Reason: Got the answer!
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02-01-2016, 12:14 AM	#73
JonnyM3 Captain 231 Rep 905 Posts Drives: Moderately Quick Join Date: Nov 2009 Location: New York iTrader: (1)	Diffuser cancels out the option. Your car is fine.
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02-01-2016, 12:16 AM	#74
Alvinized52 @ste4lthedF82 882 Rep 1,498 Posts Drives: 2016 M4 SSII Join Date: Sep 2015 Location: Los Angeles iTrader: (1) Garage List 2016 BMW M4 [10.00]	Most CF diffusers wont work cuz the CF weave somehow blocks the sensor signals. __________________ 2016 Satin SSII M4 (Instagram: @Ste4lthedF82) see my featured mods below... http://f80.bimmerpost.com/forums/sho....php?t=1197842
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02-01-2016, 02:07 AM	#76
shadowyman First Lieutenant 204 Rep 377 Posts Drives: AY F82 MPE Join Date: Jun 2013 Location: US iTrader: (0)	Thanks for this thread, I just cancelled my diffuser installation. Kick trunk open is very important to me and I don't want to miss that. I'll look into alternatives in the future. When design kills functionality, I'm not ok with that.
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02-01-2016, 02:47 AM	#77
Colinv6 Colonel 4054 Rep 2,820 Posts Drives: 2020 M4 comp, Mexico / Opal Join Date: Aug 2014 Location: Scotland iTrader: (0)	Paint the standard diffuser. Looks great and keeps full functionality! Also saves you a fair bit of cash!
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02-01-2016, 04:27 AM	#79
Arcades In The Rain 8209 Rep 6,273 Posts Drives: '24 GT4RS, '24 Macan GTS Join Date: Mar 2015 Location: SoCal iTrader: (1) Garage List 2024 Porsche Cayman ... [10.00] 2024 Porsche Macan GTS [10.00]	I have heard that Status Gruppe diffuser doesn't mess with the trunk's comfort access but I cannot personally confirm because I don't know. But BMW has said that they know OEM interrupts the sensor. When you get it, most would warn you about it. __________________ '24 Porsche Cayman GT4RS Arctic Grey "Alice" '24 Porsche Macan GTS Dolomite Silver "Gina"
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02-01-2016, 06:42 AM	#80
Vigilant Captain 305 Rep 868 Posts Drives: Cautiously fast Join Date: Nov 2014 Location: Florida iTrader: (0)	Known "issue" with replacement (non OEM) diffusers. I do like the idea of painting the diffuser an alternate color to retain functionality. __________________ 2022 BSM G80 Comp X-drive
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02-01-2016, 09:37 AM	#83
Ehronius First Lieutenant 159 Rep 315 Posts Drives: 2016 BMW M4/f82 YMB Join Date: Jan 2016 Location: Los Angeles iTrader: (0)	About to get my kick access coded off because there are times I pass by the rear of the car and trunk opens. I'm guessing the diffuser messed with it as well
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02-01-2016, 11:22 AM	#84
sunnyboy Lieutenant 127 Rep 451 Posts Drives: 2015 M4 - SO/SS, 6MT Join Date: Aug 2014 Location: Toronto, ON iTrader: (3) Garage List 2018 Porsche 911 GTS [0.00]	Well, what I did was getting a cheap chinese knock-off of the M performance diffuser but made of reinforced plastic. Kick trunk works like a charm. You can also then wrap it in CF design, if you like that sorta stuff... Attached Images __________________ ///M4 Car Name: sunnyD Car Specs: 6MT /SO /Full SS /M performance Aero Kit /AWE non-resonated Exhaust /KW v3 /Work FMB01 Bronze 19" / Dinan S3 tune + Heat Exchanger
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02-02-2016, 10:01 AM	#88
jwzimm Colonel 687 Rep 2,770 Posts Drives: '16 M3 Join Date: Jun 2011 Location: Renton, WA iTrader: (17)	As has been stated previously, you CANNOT install a conductive shield (CF is conductive) over an RF sensor and expect good results. The reason some CF diffusers might allow the CA feature to work is that they would be of inferior construction and the CF is very thin or possibly not genuine. __________________ 2008 Honda S2000 - Current 2016 F80 M3 - SOLD!! 2011 e92 X-Drive Coupe - SOLD!!
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