Keyless Ignition

Discussion in 'Assembly discussion' started by ctuinstra, Jul 19, 2017.

  1. ctuinstra

    ctuinstra Active Member

    Has anyone done away with their key system and just used push-to-start? I know some may ask why would you want to do away with the key, but I was thinking about doing away with the key and just using toggle switches for ignition, etc. Maybe add a secret interlock somewhere to keep other from just taking off with it.

    If I had a diagram for the ignition, I know I could wire it up.
  2. Karter2026

    Karter2026 Member

  3. Adam

    Adam Administrator Staff Member

    One thing you would encounter is the Passkey III vehicle anti-theft system:

    So you'd either need to figure out a way around this or just mount your ignition switch out of sight with the key still installed (and probably turned to the run position).
  4. SliderR1

    SliderR1 Member

    couldn't you just disable the VATS with HP Tuners?
    Adam likes this.
  5. Adam

    Adam Administrator Staff Member

    I just checked and it looks like there is a way to disable VATS with HP Tuners (at least on my 09 LS file).


    I didn't know about that. Thanks for the info.
    ctuinstra and JSATX like this.
  6. JSATX

    JSATX Well-Known Member

    This would be awesome. I'd rather have a push button start as well.

    It would be great to get a running list of HPT mods that could be completed in one go by sending in the ECU.

    I'm not talking about tuning the thing, just turning off error codes like 2nd O2,VATs, basic stuff like that.
    PHerder likes this.
  7. SliderR1

    SliderR1 Member

    I've been watching YouTube videos trying to learn as much as possible about HPTuners. HPT seems to have a VERY robust list of items that can be switched off/on for the SES light. However, I think it is very dependent on the style of ECU you are programming. I've got an LS swap project on my to do list, so I'm planning to take the plunge and get HP Tuners. Having said that, I will be able to answer your question for a 2005 SS SC ECU within a month or two. Their might be a list of available SES codes that can be disabled on the HPTuners forum or even I haven't specifically looked for it on either site yet.

    One of the reasons I've been doing this research is that I've read on that the LTFT tables freeze when the EVAP system is disconnected. This is going to make getting the VE tables tuned a little more difficult, if it is true. I'm hoping there is a way to turn off the EVAP and still keep the LTFT tables active in HPT. Please excuse my digression from original topic, but it is somewhat related...
    JSATX likes this.
  8. TheNuker

    TheNuker Well-Known Member

    I fixed my SES etc lights the easy way electrical tape over the light on the dash behind the face so it looks perfect LOL

  9. JSATX

    JSATX Well-Known Member

    Hah I did that for the airbag but not the check engine. It's one of the (many) long term goals to
    Get it running without triggering the CEL.
  10. ctuinstra

    ctuinstra Active Member

    So there is VATS in this?:

    Attached Files:

  11. ctuinstra

    ctuinstra Active Member


    I'm sure for a fee, could you disable the VATS in my ECM when I come to pick up Stage 1?
  12. ctuinstra

    ctuinstra Active Member

  13. Briann1177

    Briann1177 Active Member

    VATS stands for Vehicle Anti-Theft System. The transponder located inside the key is one component of the vehicle theft deterrent system. You can tell you have a transponder key by the circled + sign towards the top of the actual key part.
  14. DanPerryy

    DanPerryy Well-Known Member

    You can purchase keys online with the chips in them. Get the key cut to operate the mechanical switch. Use a door lock if necessary. Then you can get the ECM to read the new key - a 30 minute procedure. That key is then the "master". The procedure erases all previous keys from the ECM. With the new master key you can have the ECM learn up to 9 more keys. I have done this on my car. I wrote up something on this on the forum.
  15. ctuinstra

    ctuinstra Active Member

    I see that now. Thanks for the info. I would not have guessed it was in there.
  16. Briann1177

    Briann1177 Active Member

    This is the IT guy in me asking, but will disabling a couple of items labeled "patch" disable the entire underlying functionality? When I think of "patch", I think of something that sits on top of something else to modify its behavior.

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