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Thread: Bluetooth keyless entry system?

  1. #21
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  3. #23
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    You can do that with your own app (if you know how to write a software)

    the idea is just to write a software which detect all BT phone or devices in the range , then you haveto get your Mac Address of your phone ,,,,, tells your app when that Mac Address in the range >>> Control whatever you need

  4. #24
    Constant Bitrate cla1067's Avatar
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    I know this topic is pretty old

    I am thinking about investing in a bluetooth device that when i get near the car it activates unlocks my car and allows me to start the car without the keys (I'd use a button like KPierson), but when it doesn't detect my phone it locks the car and doesn't allow me to start the cars without having the keys. I also want to keep the oem security system intact.

    device i was looking at:
    http://www.scytek.net/precision.php?...lue%201000.png
    http://www.google.com/products?hl=en...w=dd&scoring=p

    but then wouldn't i need something to temporarily disable my immobilizer when a bluetooth device detects my phone and re-able when it doesn't? Also I don't know if it would set off an alarm because the doors were unlocked without using the oem remote.

    I have a 2002 honda civic ex and I am on a budget, so I am trying to figure out something that would work.

    thanks

  5. #25
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    The most important thing to remember if you are trying to do a setup like that is that it is based off of your phone and if you were to lose, break or let it die that it won't be able to unlock or start your car. Therefore, you would have to still carry a key and make sure all lock cylinders on the car remain working (ie you can still start and drive the car with the key).

    The module has a (-) when armed output that could be used, in conjunction with some other components, to control an immobilizer. I would recomend that you connect it so that it only bypasses the immobilzer when the phone is present AND the brake is pushed. This will drastically reduce the chance that your battery dies because you left your phone too close to your car (most immobilzer bypasses use a decent amount of current when active).

    In order to control a button like the one I have in my G35 you'll need a module - especially if you want the push and release function vs. the push to crank setups that are more commonly used. Past the push and release function the module also provides the "shut down" function - something you won't easily find on a "dumb" setup. Additionally, the Nissan OEM button has three lights that need to be controlled. Past the button, you will also need a way to control all your ignition and accessory switching.

    One you have all the electronic stuff squared away you'll need to find a way to safely bypass the mechanical steering wheel lock. Keep in mind, you MUST keep the ignition key cylinder in the car so you'll most likely have to disable some sort of locking mechanism between the key cylinder and the steering column. My Nissan wasn't too bad, but I have no idea what style Honda uses. The mechanical bypass is a fairly permanent one.

    The last thing to keep in mind is that in order to do this securely you need to make sure NO boxes are easily visible under the dash. Hide the security bypass where it can't be found - hide the bluetooth controller where it can't be found. If a thief finds these boxes and your steering wheel lock is bypassed your car is gone.

    Quote Originally Posted by cla1067 View Post
    I am thinking about investing in a bluetooth device that when i get near the car it activates unlocks my car and allows me to start the car without the keys (I'd use a button like KPierson), but when it doesn't detect my phone it locks the car and doesn't allow me to start the cars without having the keys. I also want to keep the oem security system intact.

    device i was looking at:
    http://www.scytek.net/precision.php?...lue%201000.png
    http://www.google.com/products?hl=en...w=dd&scoring=p

    but then wouldn't i need something to temporarily disable my immobilizer when a bluetooth device detects my phone and re-able when it doesn't? Also I don't know if it would set off an alarm because the doors were unlocked without using the oem remote.

    I have a 2002 honda civic ex and I am on a budget, so I am trying to figure out something that would work.

    thanks

  6. #26
    Raw Wave
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    There's been quite a few problems here with people not being able to get into their cars.

    The MCG (Melbourne Cricket Ground - the Mecca of football etc) is known to "imobilise" certain cars (eg Holden Commodores).

    Security systems are another (a car parked outside a chemist (drugstore) - the store turned its alarm off so the car would unlock).

    And I thought GSM would be a problem lol!


    Wireless - it's good for jamming!
    (Stick to my automation theory - always have a manual bypass!)

  7. #27
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    Quote Originally Posted by Maheriano View Post
    All cars with push button starters still require keys to be inserted into a barrel/lock to start.
    Wrong. not all require a key to be inserted into a barrel/lock. The 2nd generation prius for example just needs the key to be within a certain radius and it will start fine
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  8. #28
    Constant Bitrate cla1067's Avatar
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    This is what I have been thinking.
    Keep everything that is oem intact besides steering wheel lock.
    I could make the bluetooth device send a signal to something that bypasses the immobilizer and then when i walk way it will send another signal to renable to immobilizer. I could use the same signals as the locks would use for the immobilizer.(Any ideas on what i should buy to temporarily bypass the immobilizer?)

    I'd have to have the bluetooth device and the bypass unit together maybe in a cage with with a lock hidden somewhere, so someone couldn't easily send a signal to the bypass unit and jack my car.

    Now to get the ignition to work like it should you said you bought a module for that? (Can you suggest one or point me in the right direction?)

    I am going to have to be able to use the key still if needed and have the bluetooth setup and button (which can only work when i have my phone on me) kinda like an addon. I want to be able to do everything without even having to put the key in the ignition as long as I have my phone on me.

  9. #29
    Constant Bitrate txspazz's Avatar
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    I don't know jack about Hondas, but here's some things to consider.

    Make sure it has a steering wheel lock before you worry to much about bypassing it. US cars are only required to have a steering wheel lock OR a transmission lock. If you have an auto trans, you may not have the wheel lock.

    On some vehicles that use the BCM to control the starter you don't have to hold the key to "start" until the engine starts. You may be able to give it a quick momentary pulse and it will continue to crank until the engine starts provided it starts within a couple seconds.

    I did a quick search and it appears that your vehicle uses a transponder for the immobilizer.

    To permanently bypass it, remove the transponder from the head of the key and attach it to the ignition cylinder near the receiver. If you use more than one key you will need to remove the transponders from them too because it won't start if it sees more than one transponder.

    To temporarily bypass it on demand, use a programed key ~3' of 18 AWG wire and a relay.
    wrap the wire around the receiver 4-6 times about 12" from the end of the wire. 12" from that wrap the wire around the head of the key (or just the transponder). Attach the ends of the wire to the common and N/O poles of a relay. When you power the relay it will close the loop, the receiver will pick up the transponder and whatever you rig up to start the car will start the car.

  10. #30
    Constant Bitrate cla1067's Avatar
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    immobilizer:
    the temporarily bypass method you mentioned. That will cause the chip to send the code to the transponder and with the rely that's all i would need to bypass it? Can it be farther then a foot away? I love that trick by the way thanks it saves me money.

    I can get a another key on ebay and have someone program the chip for me to use for bypassing.
    http://cgi.ebay.com/ebaymotors/ws/eB...32102813545017


    Ignition:
    Maybe I could set it up to were the bluetooth device sends a signal to a rely and gives the acc and fuel pump power (which would replicate what the key does) and then send a signal to allow me to press a button to turn the car on (the button would also have to allow me to turn the car off). Then when I walk away it would send another signal to dis activate everything.


    Notes
    I do not have to press the brakes to turn the car on
    I have to hold the key to crank the car
    There is no wheel lock (just checked)
    The transmission does lock

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