Foot trunk release not working M Performance and other rear diffusers

[Blksnowflake]

Pics would helpful.
PM me the info please.

[GarlicBun]

Originally Posted by roders

Update, I just got one of the Ebay carbon rear diffusers and it DOES work.
Foot release is still working, same as it was with the original OEM.
Not endorsing cheaper Ebay China products, but for the price had to give it a shot as the originals were not stocked locally in Australia

i want the product info too...something look nice in the same time doesnt sacrifice anything!!

[brianeck]

Originally Posted by sh55

I have a thread on this, can't link now since I'm on mobile.

Carbon fiber insulates radio frequencies, that is why the trunk kick doesn't work.

If this is true they should be able to just "drill out" the sections around the RF sensors and then core them with plastic or something similar in black or dark grey. As they are downward facing no-one would notice anyway, and you would get the OEM trunk functionality.

[Wah]

Originally Posted by brianeck

If this is true they should be able to just "drill out" the sections around the RF sensors and then core them with plastic or something similar in black or dark grey. As they are downward facing no-one would notice anyway, and you would get the OEM trunk functionality.

If you read the update, he is saying his trunk kick opener works with his chinese CF diffuser with no modifications.

[brianeck]

Originally Posted by Wah

If you read the update, he is saying his trunk kick opener works with his chinese CF diffuser with no modifications.

I know he's saying that, that's the whole problem! I'm saying its crazy that the M Performance, Mode Carbon, RKP etc diffusors don't allow for this functionality with all their research and upfront costs and meanwhile some knockoff chinese diffusor comes along and retains OEM functionality!

[Wah]

Originally Posted by brianeck

I know he's saying that, that's the whole problem! I'm saying its crazy that the M Performance, Mode Carbon, RKP etc diffusors don't allow for this functionality with all their research and upfront costs and meanwhile some knockoff chinese diffusor comes along and retains OEM functionality!

I hear you, man. But for now, it looks like there is a diffuser in china with my name on it. The loss of that function was a big turn off for me... oh and the price tag didn't help either.

[brianeck]

Originally Posted by Wah

I hear you, man. But for now, it looks like there is a diffuser in china with my name on it. The loss of that function was a big turn off for me... oh and the price tag didn't help either.

Well definitely post some pics if you get it. I don't care what company makes the diffuser as long as it looks good, doesn't totally break the bank, and if possible retains the foot functionality.

[Andrew115]

Originally Posted by brianeck

Well definitely post some pics if you get it. I don't care what company makes the diffuser as long as it looks good, doesn't totally break the bank, and if possible retains the foot functionality.

I would add also that it doesn't yellow over time.

[F82speed]

Originally Posted by Wah

I hear you, man. But for now, it looks like there is a diffuser in china with my name on it. The loss of that function was a big turn off for me... oh and the price tag didn't help either.

Agreed, I'm in, although the specific chinese diffuser I was looking at is now sold out. hmmm.... lol

[TheLegend]

Hope someone designs a diffuser that will work, only thing holding me back at this point. It's a shame cause that's probably the one piece needed to really complete the look of the car.

[AlterZgo]

Originally Posted by Green///Hell

Honestly I haven't gotten it to work once in stock form

Originally Posted by 0-100 ninja real quick

Mine only works a few times out of ten anyways.

I had the same issue originally too until I RTFM. It requires 2 motions - foot under and foot back out in quick succession to trigger the sensor. Once I figured this out, it works 100% of the time. If you just stick your foot under and wave it around, it will never work. Just one quick under and out motion right in the middle of the rear bumper and it opens 100% of the time for me.

[Roychimac]

Holy crap I didn't even know we had a kick release for trunk option!

How does this work exactly?

[roders]

Yeh just kick in and out like kicking a soccer ball
I think you need to have Comfort Access which is standard on all the ones in Australia.

[Blksnowflake]

Originally Posted by Roychimac

Holy crap I didn't even know we had a kick release for trunk option!

How does this work exactly?

Walk up to rear of car, place foot under the car like you're trying to touch under the exhaust with your toes, then pull it back out in one motion, trunk pops open.
If you swipe your foot in and out it, won't always work, but placing your foot their and swiping it out works 100% for me.

And yes must have comfort access and key in pocket/purse/hand/fanny pack.

[TooFan328i]

I installed M performance diffuser the other day, and the kick feature has started to behave erratically. Sometimes, it will just open up when I am right behind the vehicle. If I put my hand under the gap between the diffuser and the bumper, the trunk would open (also sometimes). And today, it went cuckoo, and the trunk kept on opening itself every time I closed it.

I know that kick feature doesn't work after the M performance diffuser install, but why does it behave this erratically? It's driving my OCD crazy!

[Ehronius]

This happens to me as well, but it's after I opened the trunk already and trying to close it. It opened like 3 times. And sometimes it Won't do it. Maybe it's the sensor where the diffuser is. Only solution I came up with is keeping the key away from me when dealing with the trunk hehe

[SMOKE EM IF U GOT EM!!]

Was drying the car the other day after washing it and it must've opened up about 10 times. Was a little annoying at one point. No idea what's doing it. Sometimes it's fine. Others it has a mind of its own.

[Ehronius]

I'm assuming the sensor where our diffusers are

[BMWPWR]

Can you code it off?

M4 GTS has the diffuser stock so surely you could?

[forza1976]

Carbon interferes with this sensor, just is what it is.

[jwzimm]

Yup. Carbon fiber is conductive. This acts as an RF shield preventing the kick sensor from "seeing" your foot. It is a known thing that the installation of the OEM carbon diffuser will disable the kick feature. There is a workaround someone has come up with that moves the sensor closer to the back side of the diffuser. You can search for that thread.

[A267839885568]

BMW released the diffuser last year with a note saying the kick function will be "disabled" when installing the diffuser due to the RF frequency being blocked.