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Go Back   TDIClub Forums > TDI Model Specific Discussions Areas > VW Passat Family (NMS and B7) TDIs (2012+)

VW Passat Family (NMS and B7) TDIs (2012+) Discussion area for the 2012+ Passat TDI (North American and rest of world versions versions). The North American model was previously codenamed NMS (New Midsize Sedan) and the version the rest of the world gets is sometimes referred to as B7.

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Old April 24th, 2013, 14:33   #1
DieselDubs83
 
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Default DIY 12v Constant Power Outlet MOD

Did you ever wish that your Passat had a 12V constant outlet? Like for charging your dead phone while in a meeting, or plugging your battery tending solar panel into? This is a simple way to get your factory outlets to be 12V positive even with the key off.
First of all remove this tray by pressing inwards on both sides while maintaining opening pressure. When it releases, simply open it all the way down and pull it off the hinges.

Next you want to shine the light up into the cavity at the back of this drawer and locate the yellow (or greenish) relay (circled in red) with the number 644 on it. pull this relay out by releasing the lock tab (circled in yellow)

Next you need to open the relay up.

Then check out how the contacts inside the relay work and place an object (I used an electrical terminal) in it to hold the contacts together.

Snap the relay back together and enjoy your "always on" 12V outlets. This retains a fully fused circuit and an OEM look. Below is a pic of the fuse for this circuit.


ENJOY!!!!!
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Last edited by DieselDubs83; April 24th, 2013 at 14:38.
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Old April 24th, 2013, 15:18   #2
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Thanks! This is much needed!
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Old April 24th, 2013, 16:08   #3
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Which outlet(s) does this energize?
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Old April 24th, 2013, 16:12   #4
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The one in the front "hidden compartment" and the one under the armrest.

-Les
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Old April 24th, 2013, 16:22   #5
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Excellent! Thanks for the DIY!
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Old April 24th, 2013, 20:23   #6
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Nice! Finally someone figures this out. Just one question, will this drain the battery's hen the vehicle is off and the outlet is not in use?
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Old April 24th, 2013, 20:32   #7
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No it won't drain the battery down.

-J
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Maybe I should pay MYSELF to do bad work on my car!
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Old April 24th, 2013, 23:34   #8
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Nice mod. I would be concerned that the terminal wedged in there would/might/will loosen and fall out, since the coil will continue to energize each time the car is on and release when turned off, and over time this slight movement can affect the placement of the terminal. Then you got a rattle to deal with. A dab of 5 minute epoxy would hold it in place. Better yet would be to solder a 12 gauge wire jumper across the contacts.

DieselDubs83 - Thanks for the tip on removing the relays. i was trying to remove my aux relays to move some wires around and just couldn't seem to release it. Does the lock tab move out to release or in towards the relay? TIA.

You may affect the battery charge state if you left something plugged in for an extended period without running the car, but that would be an extreme case.
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Old April 24th, 2013, 23:43   #9
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That tab is moved away from the relay to release it.

I understand the concern on coming loose. This was on a customers car and he wanted to be able to return to stock should he need to. Make sure that it is wedged tight enough to eliminate any movement when energized. I would probably hot glue mine as it would hold well and yet still remove easily.

-Les
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Old April 25th, 2013, 05:58   #10
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That simple?

Cool!!!!!!!!!!

Now, why hasn't VW thought of this...?

My guess is that VW's corporate board is 'too conservative' (think of lawyers and bean counters, instead of engineers).
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Old April 25th, 2013, 06:04   #11
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?? no they designed it to be switched from the beginning.

-J
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Old April 25th, 2013, 07:39   #12
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I'm definitely doing this today!
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Old April 25th, 2013, 10:54   #13
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Wonder if this would work on the JSW to have the 110v outlet always hot? Be great for camping trips when you need to charge things.
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Old April 25th, 2013, 10:56   #14
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will this relay mod energize other electrical circuits that otherwise would be OFF with the key?
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Old April 25th, 2013, 11:00   #15
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Quote:
Originally Posted by charley654 View Post
will this relay mod energize other electrical circuits that otherwise would be OFF with the key?
In testing this circuit there are no other components on it. This is a single relay and single fuse (30A) circuit. The only things on this circuit are the tow outlets.

-Les
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