keyless go

https://www.mbusa.com/brand/models/tech_demos/tech_demo_pop.jsp?source=S600V&accCode=0889 

please click there and watch the short video. Anyone can help me how i can do this Start/Stop button in my 95 civic coupe.

I have the wiring down, but I also would have to turn my wheel lock to electronical, and i also have a cut off switch i would have to incorporate. Currently, I dont have an alarm system. the start/stop button would go inside with the alarm system.

Any suggestions?

MisterJumbo, I would deffinitely like to chat with you more. A friend told me to try a finger print ID. But I didn't want that glamarous. I do have wiring experience. I install custom Home theater systems for a living. I am also in the process of re-doing the wires for my audio system. Maybe we can help each other with our projects.

I have watched the video and have had the pleasure of using a car with a similar system.

it was not a glamorous Mercedes but a Nissan micra - but the system was pretty much the same.

I too would like to make a similar system. Im not willing to compromise on anything - I want all the features - don't let people turn you off with stories of your car being stolen.

Sadly I only know the bear basics of electronics so that's no help. I will have to buy must of the stuff ready made and piece it together. But still will need some help on some things.

Ok the first part is you need a transponder. I have found one that will outclass the Mercedes and Nissan version. With the Nissan version u approached the car - u then pressed a button on the door handle, if u had the transponder in your pocket it would unlock the doors.

https://www.12voltshop.com/proddetail.asp?prodid=RFKE-22&cat=19&path=1,19

This transponder I have found will unlock the doors automatically when you are near the car door - so its hands free! (U can set the distance it will trigger - or u can also have it manual and press a button on the transponder).

If you move away from the car it will lock the doors. No intervention is needed.

Now my car has an immobiliser. I will also have to buy an immobiliser by-pass kit.

When the transponder is in range it will unlock the doors - there must be a wire on the receiver unit that goes +ve when in range and that goes 0v when the transponder is out of range. I will use that to signal my by-pass to mobilise/immobilise my car.

Also when the transponder is in range I will make it activate a relay that will turn the ignition on.

So far - when the transponder is in range I have

1. Open Doors

2. Immobiliser Off

3. Ignition On.

Those are all the ingredients U need to start the car.

But how to start the car (activate car starter motor)?

A crude way would be to have a switch to the starter motor. U would have to hold your finger down till the engine fired up then let go. If you did not hold your finger down long enough the car would not start. If you held your finger down for too long that would not be healthy. If the car was running and U pressed the button that would be worse.

What U need to do is hook up your starter switch to some electronics to give it some brains. So all u have to is press the switch. Your electronics would then determine how long the starter should be on for. If its a cold day the starter will have to be on longer for the engine to start.

If you held your finger on the start button the electronics would not keep the starter motor going.

Also if you added some electronic trickery U can have the same starter button turn the car off.

Unfortunately I dont know any electronics (yet) -

I have a remote car warmer and it has a wire that goes to some tach wire and that works well, it knows when the car is on and stops the starter motor.

Please can someone with some electronics know-how tell us how to build this intelligent starter switch. How do we know when the car has started so it cuts the current to the starter motor. Or is there a ready made kit somewhere (not that thats any fun - it nice to learn some electronics)

As for security I have never been concerned about it. Although I once had my stereo stolen.

The transponder is not in range - so doors are locked and immobiliser is On and ignition is OFF.

They smash the window and get in - still immobiliser is ON ignition is OFF - even with a stupid switch with no electronics behind it all they could do is turn the starter over - big deal.

Granted if they pulled all the panelling off the car located my by-pass kit and sent a 12v current down the right wire they could start the car. - what are the chances?

You probably don't want to count on the transponder to keep the ignition on beyond starting the car.  The ignition will need to be sustained while you are driving, and you don't want that to be at the mercy of a transponder being in proximity.  Also, don't forget that you'll also need a reliable way to turn the car off!

Good luck with the project,

-Michael

Well, you will get a momentary button. I was thinking of doing it like this..press to start, then press to stop, bur only shut off when they car is in Park. Or if you have a stick, maybe when the e-brake is up.  You might need to wire it, so you have to hold down the button, because when you turn ur key to accessories, the starter module will send a signal to ur starter, which actually rotates your engine 3 revolutions to get it going, cuz its cold. So im thinking with the button, you will need to hold down a few secs, because you need to give the starter time to do its job.

As far as wiring goes:

To relay momentary button- Starter BLACK/ White Ignition Switch Harness

                                                   Ignition BLACK/ Yellow Ignition Switch Harness

                                                   Accessory Yellow/ Ignition Switch Harness

As far as your wheel lock, you will have to convert to electronical if its mechanical...didnt figure out this problem yet.

Thanks for all your reply's.

>>You probably don't want to count on the transponder to keep the ignition on beyond starting the car. The ignition will need to be sustained while you are driving, and you don't want that to be at the mercy of a transponder being in proximity. Also, don't forget that you'll also need a reliable way to turn the car off!<<

Yes - that's very true - dont want the car turning off on me.

Well instead of the transponder +ve going to one side of a relay coil with the contacts going to the ignition. The +ve could go to another relay arrangement (or some electronics) which when pulsed stays energised till the system is reset. This resetting of the system would turn the car off permanently.

How do real keyless systems work? I had a hire car which was keyless. I think if the engine is on and u go out of range (maybe if you throw the key out the window) the engine turns off after 10seconds. I think thats what the chap told me.

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>>Don't tell me your homemade immobilizer can't be defeated because most manufacturer's immobilizers can be defeated relatively easy.<<

What home made immobiliser? My new car soon to be delivered comes with a factory fitted immobiliser - which I wish it did not because I have to spend money on a by-pass kit now.

Never really been concerned about someone nicking the car - U think people would steal a Polo Volkswagen? They might want the stereo. As for defeating the system - if the person stealing my car saw the bypass-kit he would just open it up and have the car key! - LOL.

For me car security is not an issue.

The way I see it every thief knows all new cars come with immobiliser as standard. Only a professional thief who knew how to defeat the system would attempt to steal it in the first place. They know exactly what system the car has. They attack my car they might get a bit confused finding the systems been altered.

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>>As far as your wheel lock, you will have to convert to electronical if its mechanical...didnt figure out this problem yet.<<

My solution was to remove the steering lock - and thats the end of that story. I really dont have money to add security features. I took the steering lock off my old car. It lived for ten years without a steering lock. It still outside my house. I wish someone would steal it - a bus hit it recently and now it must be scrapped.

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Has anyone taken a look at that link of that transponder?

https://www.12voltshop.com/proddetail.asp?prodid=RFKE-22&cat=19&path=1,19

Do you think its good?

Do you know of any other models?