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Ignition Wiring Diagram for Push Button Start Mod
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Littlewill
 


Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484

England 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4
Ignition Wiring Diagram for Push Button Start Mod

Hi there,

Just for fun me and a friend our going to try and wire a push start button to our project D3. The button has been sited next to the steering wheel and the wires run. We are able to get the Disco to start and stop using the button but only when the key is in the ignition.

1) put key in ignition
2) turn to position two (lights up dash)
3) push button
4) engine starts fine

Now, I'm guessing that this is because of the imobiliser chip in the key. I'm sure no one will tell me how to do it publically but if anyone knows a way to bypass the imobiliser please message me. We'd like to see if this could be done.


Again - This is just for fun and we had the kit already for another project so please no hating Laughing  
Post #205739931st May 2019 2:01 pm
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Narpy
 


Member Since: 18 Jul 2011
Location: Stockport
Posts: 7830

2005 Discovery 3 TDV6 S Manual Cairns BlueDiscovery 3

If your plan is to not use the key at all in the ignition, how will you overcome the steering lock from engaging? Mods:
Front Fogs + Halos
FBH Remote Control
The 1st Ever RRS Modded Grill
Garmin Nuvi + D4 Surround + Reversing Camera.
D4 Steering Wheel.
Rear Boot Spoiler.
Twin Brake Lights.
Wing Mirror Indicator Repeaters.
Long Roof Rails
Make your own Narpy grill thread
I'm not scared, I'm outta here.  
Post #205741331st May 2019 3:21 pm
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Littlewill
 


Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484

England 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

Hi Narpy,

Again as this is just for fun...

We will likely remove the steering lock for the day then replace once we've got bored with it. Laughing  
Post #205742531st May 2019 4:05 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10362

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

on other cars and easy way it to remove the chip from the key and glue it to the sensor Laughing

On a D3 you are only likely to end up Censored the key and/or remote lock. (the key is normally charged when in ignition as well)

D3 have enough problems without creating them.  
Post #205744031st May 2019 5:48 pm
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Littlewill
 


Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484

England 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

yeah we've taken the spare to bits and find that the car will start with the key blade in the barrel turned to two and then pushing the button whilst waving the chip near the key blade. The disco will not start with the key out of the ignition but the chip taped to the barrel. Does the key blade, when turned, power the chip reader in the green ring around the barrel?

Thanks  
Post #205744131st May 2019 5:55 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10362

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

With the key in II
There are 3 contacts made.

Key in
Aux
Ignition.

Are you powering all of them up ??  
Post #205745131st May 2019 6:41 pm
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Littlewill
 


Member Since: 14 Sep 2015
Location: Lincolnshire
Posts: 484

England 2015 Discovery 4 3.0 TDV6 HSE Auto Firenze RedDiscovery 4

The push button will turn everything on barring the engine. Once pressed the immobiliser red light goes to solid red then the ignition turns off. Push the button again and it all comes back on.  
Post #205746831st May 2019 9:47 pm
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10362

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

Not sure I follow that.

The imbilister prevents cranking from memory

Dash lights should still be on  
Post #20574951st Jun 2019 7:58 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10362

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

just check. it's a bit unusual.

4 contacts need to be made to be sure

key in
aux
ignition
crank  
Post #20575201st Jun 2019 9:40 am
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Pete K
 


Member Since: 15 Jan 2016
Location: GL
Posts: 10362

England 2005 Discovery 3 TDV6 HSE Auto Rimini RedDiscovery 3

I wonder if there is something wrong with the brake pedal wire.

With they key out
Press the button start so the ign lights are on.

Press pedal and ensure the signal is 12v

What brand is the button system  
Post #20576481st Jun 2019 8:36 pm
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