Audi TT Forum banner
1 - 20 of 75 Posts

·
Registered
Joined
·
118 Posts
Discussion Starter · #1 ·
I have got my fancy Start button to my MK2 (specially for any mk2), produced by an english company, it has 3 wires.
I need to connect one of them to the "starter wire" of mk2, which is somewhere next to the wheel, under the plastic in the ignition barrel. (it should be a red/black wire according to my doc)
(2nd to live 12V, 3rd to ground)

Do you have a clue, where is this, and how can I reach it by removing anything?

thanx in advance
 

·
Registered
3.2 V6
Joined
·
4,927 Posts
Are you aware that you would still need the key to turn the ignition on and disarm the immobiliser?
 

·
Registered
Joined
·
118 Posts
Discussion Starter · #3 ·
MT-V6 said:
Are you aware that you would still need the key to turn the ignition on and disarm the immobiliser?
Sure. It needs still the key, but after turning on, you can start with button.

Any help regarding wiring thoug?
 

·
Super Moderator
2007 3.2 VR6 Roadster
Joined
·
11,517 Posts
@ wyx - For reference, you can download the wiring diagrams from the Knowledge Base which will include the ignition wiring. I found two possible sources for this project; one for a Mk1 and one for a Mk2. I'm not sure if the Mk1 information is relevant, but it might be helpful.

FYI - Try using the Forum Search function, it works quite well. 😉

This link is for wiring up a start button in the Mk2 -

Latest Modification
https://www.ttforum.co.uk/forum/viewtop ... 9&t=584473

CenterConsoleStartSwitch.JPG

This link is for wiring up a start button in the Mk1 -

Modern Engine Start Button DIY
https://www.ttforum.co.uk/forum/viewtop ... &t=1968127

WiringHarness.JPG


Mk1withStarterButton.JPG
 

·
Registered
3.2 V6
Joined
·
4,927 Posts
wyx said:
MT-V6 said:
Are you aware that you would still need the key to turn the ignition on and disarm the immobiliser?
Sure. It needs still the key, but after turning on, you can start with button.

Any help regarding wiring thoug?
It defeats the object of a start button in my opinion! But sure, I will try and remember to have a look tomorrow
 

·
Super Moderator
2007 3.2 VR6 Roadster
Joined
·
11,517 Posts
To be fair, the Honda S2000 was exactly the same; insert key on the right side of the steering column and turn. Then press the start button on the left to fire up the engine. A bit redundant but it had a "cool" factor.

Another option would be to retrofit the TTRS starter button or a Mk3 steering wheel as shown below. According to some posts in other Audi forums, in addition to making the start button work as intended, there was a discussion about making the left button switch between "S" and "D".

A Google search will find these easily enough if anyone's interested.

S2000StartButton.JPG


StarterButton.JPG


RetrofitKit.JPG
 

·
Registered
Joined
·
118 Posts
Discussion Starter · #7 ·
SwissJetPilot said:
This link is for wiring up a start button in the Mk2 -
The problem is that this does not answer my question...where and which wire?
In the given documentation, it says:

Pole87 RED 12+ Live must be connected to BLACk/WHITE wire, to "ignition on" source
Pole30 RED STARTER WIRE - connect to RED/BLACK wire located at the back of the ignition barrel
Pole86 BLACK EARTH - Ground

Where is this barrel?
I suppose, it is somewhere around the car relays.
 

·
Super Moderator
2007 3.2 VR6 Roadster
Joined
·
11,517 Posts
@ wyx - If the two links I provided don't help, then you might want to try the Forum Search function to see if anyone's done this in the past.

If that doesn't provide you with the answer you're looking for, then you may want to consult an automotive specialist that's familiar with this type of retrofit.
 

·
Registered
Joined
·
118 Posts
Discussion Starter · #9 ·
SwissJetPilot said:
@ wyx - You might want to try the Forum Search function to see if anyone's done this in the past.
I know, where is the "Search button" dont worry. But I can not find anything.
This barrel I suppose should be the "normal" metallic switch of the key, and should be some wiring behind. I need to check how to access to it.
 

·
Super Moderator
2007 3.2 VR6 Roadster
Joined
·
11,517 Posts
Wiring diagrams are in the KB along with the WSM on how to disassemble the ignition assembly. Good luck!
 

·
Registered
Joined
·
118 Posts
Discussion Starter · #11 ·
SwissJetPilot said:
Wiring diagrams are in the KB along with the WSM on how to disassemble the ignition assembly. Good luck!
I am a not electrical engineer to read this kind of wiring diagrams, thats why I asked fopr help :)
What I need, to know, where is this device/wire to join, and how to remove which trims?
 

·
Registered
Joined
·
1,796 Posts
wyx said:
I need to connect one of them to the "starter wire" of mk2, which is somewhere next to the wheel, under the plastic in the ignition barrel. (it should be a red/black wire according to my doc)
(2nd to live 12V, 3rd to ground)
You have answered your own question.
You are trying to replace the function of turning a key with a button. The wiring obviously come off of the 'barrel of the key switch. "somewhere next to the wheel, under the plastic in the ignition barrel"
 

·
Registered
Joined
·
118 Posts
Discussion Starter · #13 ·
FNChaos said:
wyx said:
I need to connect one of them to the "starter wire" of mk2, which is somewhere next to the wheel, under the plastic in the ignition barrel. (it should be a red/black wire according to my doc)
(2nd to live 12V, 3rd to ground)
You have answered your own question.
[/u]
Thanx for clearing, but the "obviously" and "somewhere" is not answer for me.
I am asking somebody who disassembled the same thing already, not only guessing :)
 

·
Super Moderator
2007 3.2 VR6 Roadster
Joined
·
11,517 Posts
@ wyx - Based on the responses to your post and lack of results from your Forum searches, I think it's safe to say, few, if any in this Forum have done this kind of modification. If no one here is able to help you, then you might want to try Google searching for Mk2 Start Push Button and see if any of the other Audi TT forums have the information you're looking for.
 

·
Registered
3.2 V6
Joined
·
4,927 Posts
To physically access the ignition has a few steps, I guess it is deliberately not too simple to access these wires

Remove airbag
Remove steering wheel
Remove steering wheel adjustor handle
Remove column top trim
Remove bottom trim

The ignition switch I believe plugs straight into the steering module, there are no wires as such, so I imagine you will need to disassemble it to splice in some wires to extend to the new button

Most of the above steps are covered in my cruise control guide https://www.ttforum.co.uk/forum/viewtop ... &t=1338881
 

·
Registered
Joined
·
118 Posts
Discussion Starter · #16 ·
Just need to wait. This topic came up yesterday, I am totally sure, somebody did similar.
 

·
Registered
Joined
·
118 Posts
Discussion Starter · #17 ·
MT-V6 said:
To physically access the ignition has a few steps, I guess it is deliberately not too simple to access these wires

The ignition switch I believe plugs straight into the steering module, there are no wires as such, so I imagine you will need to disassemble it to splice in some wires to extend to the new button
I dont think so, it does go to the steering module. I think, there should be wires to run into relays from the ignition switch, with "starter wire" as well.
The documentation describes even the wire colors as well.
My main question is, can I access them in the fuse box or should I take the whole plastic apart by the steering weel?
 

·
Registered
3.2 V6
Joined
·
4,927 Posts
What relay are you looking for?

I am almost 100% certain that the ignition switch goes via the steering module
 

·
Registered
Joined
·
118 Posts
Discussion Starter · #19 ·
MT-V6 said:
What relay are you looking for?

I am almost 100% certain that the ignition switch goes via the steering module
I dont know, thats why my question. Just I saw the post (link was added by Swiss) for mk1, there was no steering module in the picture.
 

·
Registered
3.2 V6
Joined
·
4,927 Posts
The MK1 is a much more basic car, a very different electrical system
 
1 - 20 of 75 Posts
Top