electronic trunk-release retrofit

[odinson]

I want an electronic trunk release on my Canadian 2006 Si. I asked the parts manager at a local dealership, and he basically said it was impossible:

"I have been working with the Parts dept. regarding your inquiry. Unfortunately none of the parts required to make this happen are available in Canada. Even if parts were available it would be quite expensive to retro fit....Well over $1000 to complete this type of repair. I have no way to supply you with any part #’s as our parts directory does not have a listing…With our keyless entry system all power is directed through a device called a multi-plex unit which on its own is about $500. Add in wiring, a power trunk latch actuator with new remotes and you’ll find the price climbing rapidly…Sorry"

Does anyone know what this "Multi-plex Unit" business is? I looked at hondapartsdeals.com and collegehillshonda.com, and the only remotely relevant part I could find that comes close to that price is the trunk lid itself, which still retails for less than US$350, and which I wouldn't need in any case.



Judging by the list above, the only "expensive" part(s) I'd need is/are 74851-SNR-C01 and 74851-SNR-C02 (and they only retail for about US$65 each -- I don't know what the difference between the two is -- both are listed as #11 in the drawing below).



Has anyone else done this retrofit successfully? There have been other threads on this topic, but in the end, they never seemed to go anywhere, e.g., Remote Trunk release for LX sedan

Any advice or further information is welcome...except, yes, I know I can probably get an aftermarket trunk-popper at little cost...I just want this on my key.

[negativezeroz]

My Clifford 3.5RSX does that for me

[JeShUa]

Originally Posted by negativezeroz

My Clifford 3.5RSX does that for me

yeah.. if you're talking hundreds of dollars.. you can have an aftermarket system installed for 350 that'll pop your trunk

[whiterice]

Hell, go buy an actuator at Circuit City for like $30 and get a momentary switch, and bam you have trunk pop. If you want it on a keyfob, then you have to get an aftermarket keyless/alarm/remote start/whatever...

[negativezeroz]

Originally Posted by JeShUa

yeah.. if you're talking hundreds of dollars.. you can have an aftermarket system installed for 350 that'll pop your trunk

$180 - alarm
$150 - install

So yeah sure but it also doubles as a great alarm.

[odinson]

Maybe I should have been clearer. Here's part of my earlier post, edited:

Originally Posted by odinson

Any advice or further information is welcome...except, yes, I know I can probably get an aftermarket trunk-popper at little cost...I just want this on my Honda key.

In other words, I don't care about workarounds or modifications with an aftermarket alarm. I want to know what OEM American Honda parts I would need to import in order to retrofit my trunk and key(s) so that the former can be opened by the push of a button on the latter.

[JchanFTW]

Originally Posted by negativezeroz

My Clifford 3.5RSX does that for me

Ditto ;P HCCAFan FTW?

[yippieguy]

what about if someone would design a unit that would
1) intercept the signal that would normally open your passenger door when you double-press the "open" button, and just have both doors unlock at the same time. You'd lose the "2-stage unlock" function.

2) The trigger that would NORMALLY unlock the passenger door, route that to an aftermarket trunk actuator?

Odd stuff might happen when people use the inside door unlock controls though.. some diodes would be needed here and there surely.

[aodmisery]

do you have the trunk unlock button on your key fob? if not your gonna have to go aftermarket.

[drexp2000]

I'm a little confused... I thought all our SI's came with a remote trunk release? My key has a trunk release button and voila!

Is your car a coupe or a sedan?

You know what would be cool is a push button from the inside of the car!

[aodmisery]

^^canadian models dont have it. and there is a push button inside the car for the trunk...well at least its a pull handle....

[odinson]

Originally Posted by drexp2000

I'm a little confused... I thought all our SI's came with a remote trunk release. My key has a trunk release button and voila! Is your car a coupe or a sedan?

I have an Si, but it is CDM. One of the few differences between the USDM and Canadian Si is the lack of an electronic trunk release on the latter.

Originally Posted by aodmisery

do you have the trunk unlock button on your key fob? if not you're gonna have to go aftermarket.

Replacing the keyfob for a three-buttoned one isn't the problem; wiring the trunk properly is.

[yippieguy]

a push-button from the inside would be the easiest of all mods. all you need is the actuator to make the trunk release go.

it's interfacing with the factory alarm that's the pain...

[odinson]

Originally Posted by yippieguy

a push-button from the inside would be the easiest of all mods. all you need is the actuator to make the trunk release go.

it's interfacing with the factory alarm that's the pain...

Having a push-button from the inside doesn't give any advantage over my current set-up. I already have the latch / cable trunk-release that all Civics have. I want to be able to open the trunk with a button from the outside.

Anyways, no factory alarms on CDM Civics. It's an optional accessory.

[yippieguy]

oh ya.. <slaps head> totally forgot that we already have a pull cable on the inside...

[damb]

I did it using a aftermarket solinoid. Check out the DIY.