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Close Trunk With Remote Experiment

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Old 05-26-2014, 10:07 AM   #1
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Default Close Trunk With Remote Experiment


Going slowly but surely - cost = $3

Cheers,

Louis
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Old 05-26-2014, 12:59 PM   #2
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Nice mod! Tell us more!
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Old 05-26-2014, 03:30 PM   #3
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Default Some companies already made a little box to sell...

I don't know if it's good to post what I did, it's not good for their business. Here is a hint. All you need is a simple 12V relay - I use electronic relay that cost less than automotive relay. Anyhow, everytime you press the remote, at the trunk latch, the green wire will go high and back to 0. This will be your relay trigger.
Next, the switch button to close, the 2 center pins (2-3) will short together when you press the switch. Therefore, these 2 pins will be connected to the outputs of the relay.

I'll post some pictures later

Cheers,

Louis
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Old 05-26-2014, 05:20 PM   #4
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Hey that's awesome!
So are you closing it with the button on the FOB or the button on the door? Why is it going back up if you're trying to close it? I still haven't pulled the trigger on getting the module to have this option.
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Old 05-26-2014, 08:37 PM   #5
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Default It's Done - works like a charm...

Simple modification - Now, I don't have to get out of the car to close the trunk when my 7 year old son can't close the trunk because he's too short to reach the lid after he took his backpack out of the car every morning.


Cheers,

Louis
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Old 05-27-2014, 03:48 AM   #6
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Louis,
That is perfect. Great job!
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Old 05-27-2014, 04:18 AM   #7
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That is awesome! Fantastic job. Now if I could get my mirrors to fold in when I lock the doors....
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Old 05-27-2014, 04:20 AM   #8
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Brilliant in it's simplicity ! Great job !
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Old 05-27-2014, 05:33 AM   #9
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Quote:
Originally Posted by 1Wasserwerks View Post
That is awesome! Fantastic job. Now if I could get my mirrors to fold in when I lock the doors....
Now that's would be another great option to have .
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Old 05-27-2014, 06:41 AM   #10
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Default That won't be hard... :-) But it's not one of my needs

Quote:
Originally Posted by 1Wasserwerks View Post
That is awesome! Fantastic job. Now if I could get my mirrors to fold in when I lock the doors....
Exercise the motors more times than they should - Unnecessary use without any benefits.

Cheers,

Louis
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Old 05-27-2014, 12:21 PM   #11
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Thanks, Louis for the info! Really simple if you think about it.
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Old 05-27-2014, 12:41 PM   #12
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Default mr602-5sr nec relay is the one I used - you can get

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Originally Posted by Fez2013 View Post
Louis,
That is perfect. Great job!
Any electronic relay - if you have frys electronics or radio shack (I don't know if they're still alive) - 12V is a must.

Click the image to open in full size.

I get my stuff from here if the part is not in my samples box. Choose the cheapest 12V relay will do.

Cheers,

Louis
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Old 05-27-2014, 01:28 PM   #13
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Why the hell wasn't this built in as standard ?!?!? So easy and cheap...
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Old 05-27-2014, 03:51 PM   #14
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Default the answer to your rhetorical question is....

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Why the hell wasn't this built in as standard ?!?!? So easy and cheap...
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Old 05-27-2014, 09:38 PM   #15
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Louis, how about a schematic for this awesome upgrade? Some of us need a bit more direction. While i can use a solder iron, shrink wrap, etc. would appreciate some details on how you wired the relay (where did you get power, etc) as well as details on the which relay pins go where?

Nice discovery, Thanks in advance!
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Old 05-27-2014, 10:37 PM   #16
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If I had to guess,

I would say the two pins on the latch green and brown are the relay coil,

Then the actual NO pins of the relay would be the two middle pins on the button for the trunk close plug.

The relay would energise when the remote activates the latch, and trick the car into thinking the button has been pressed (which normally joins those two pins closed by the relay)

Mike
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Old 05-28-2014, 03:57 AM   #17
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Great mod, need DIY on this. Thanks!
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Old 05-28-2014, 06:57 AM   #18
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Default Try to understand a relay and watch the video again

[QUOTE=Galco;24572590]Louis, how about a schematic for this awesome upgrade? Some of us need a bit more direction. While i can use a solder iron, shrink wrap, etc. would appreciate some details on how you wired the relay (where did you get power, etc) as well as details on the which relay pins go where?

-2 center pins of the close switch (rectangular black button) Green & Brown (pin 2-3) of 4 pins are shorted when you press the button - this will tell the system to close the trunk (only when the trunk is opened- how does it know that? pin #1).
-The latch pin 1 and 2 (Green and Brown) when remote or door activate, will produce a pulse of 12V between them and Green is Positive and Brown is Negative.

Click the image to open in full size.

-A relay will have 2 inputs and 1 or 2 outputs
- 2 inputs are terminals of a coil (will have +/-) - when the potential between these inputs are at the designed voltage, it will close the output pins (which normally are open).
- The output pins are open when the coil is not energized (no potential difference between the coil) and closed when the input coil is energized.

Removed

Cheers,

Louis
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Last edited by ltooz_a6_a8_q7; 05-28-2014 at 10:31 AM.
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Old 05-28-2014, 07:09 AM   #19
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This is a great mod. Anyone know what electrical plugs/connectors are used? I'd like to make a plug and play loom insert for this. Not a huge fan of splice connectors and electrical tape for permanent modifications.
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Old 05-28-2014, 09:57 AM   #20
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Default remove the connector pins and solder the wires to them

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Originally Posted by dvs_dave View Post
This is a great mod. Anyone know what electrical plugs/connectors are used? I'd like to make a plug and play loom insert for this. Not a huge fan of splice connectors and electrical tape for permanent modifications.
I believe you can actually remove the connector pins out, solder the wires to them and push them back in the connector - No splicing - and they will be permanent.

If you trace these wires back, they're in the battery compartment. You can do them there, I think, if you do, please take pictures and share.

Cheers,

Louis
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Old 05-28-2014, 09:57 AM
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