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Posted on Jan 19, 2014
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791 transponder not working

791 transponder will not work. remote will start if key is in the ignition only

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  • dmlawright Jan 19, 2014

    blue wire is hooked up, key will not work outside of the cylinder. how do I activate the key sense wire

  • bigdawg7299 Jan 21, 2014

    You will need a bypass module for you car. This will "fool" the car into thinking the key is in the ignition.

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4 Related Answers

Anonymous

  • 34 Answers
  • Posted on Jan 09, 2009

SOURCE: Remote won't work and parking lights blink

the blue wire needs to go to -input then unit should work

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Larry Spears

  • 625 Answers
  • Posted on Jan 16, 2011

SOURCE: Have a Ford transponder2 in a Nissan Xterra when I

So, this is a transponder key box, correct? And, the vehicle starts with the remote starter when you put the key in the ignition but, the vehicle will not start when you put the key in the key box, correct? If what I have explained above is the issue, there could be one of several problems. The key box may not be getting power and/or ground when running. Test to make sure. Next, the antenna ring going to the ignition cylinder may need to be adjusted to insure that the signal is being received by the vehicle. Next, if the vehicle starts with key in the ignition; also test that the remote starter works with the placed by the ignition cylinder (without being placed in the ignition). If the remote starter starts with the key IN the ignition but not with the key being placed BY the ignition cylinder, you may need to activate the key sense wire during remote start.

Alan H

  • 139 Answers
  • Posted on Dec 03, 2011

SOURCE: remote start only starts with key in the ignition

It sounds like the immobilizer bypass module has either lost its programming due to the dead battery or a voltage spike from jump starting/recharging the battery or it has malfunctioned. Without knowing which module is installed, it is not possible to determine if it can be reprogrammed. The immobilizer bypass module substitutes the transponder that is in your key and allows the vehicle to start. When it is malfunctioning, it may not be providing a signal or providing the wrong signal the vehicle ECU is expecting. The reason you can remote start the car with the key in the ignition is because the transponder is being read fromthe key and the ECU is allowing the vehicle to start.

logosc75

Larry Spears

  • 625 Answers
  • Posted on Sep 09, 2012

SOURCE: Transponder for 2006 mitsubishi eclipse for remote starter

Yes, There are two Immobilizer bypass modules on the market that will work with your vehicle without having to sacrifice a key. Xpresskit offers the DBALL and PK9. Both require programming to function properly.

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My remote transponder key starts the car but does not open the door or lock it remotely even with a new battery.
Remote starts are not a factory option. None do it. Dealers will. But it is all aftermarket. I have taken out hundreds of them. I refuse to install them.
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Apr 04, 2016 • 2010 Honda Civic LX
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I have a prestige APS2K4SAW REMOTE START, i have this problem when i have a key replacement coz i lost both of my keys..the lock and unlock button work fine but remote start won't work..the engine seems...
Sounds like you may have a smart key with a transponder. The car will crank with a differant key but will not start because fuel and spark are dissabled. A new key is required and it must be coded to the vehicle by the deaker or a professional with the appropriate software. Then then a copy of the key is usually placed in a 555 box that is located close to the ignition switch so the transponder will still work. So basically you will need two keys made and coded.
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Remote start only starts with key in the ignition
It sounds like the immobilizer bypass module has either lost its programming due to the dead battery or a voltage spike from jump starting/recharging the battery or it has malfunctioned. Without knowing which module is installed, it is not possible to determine if it can be reprogrammed. The immobilizer bypass module substitutes the transponder that is in your key and allows the vehicle to start. When it is malfunctioning, it may not be providing a signal or providing the wrong signal the vehicle ECU is expecting. The reason you can remote start the car with the key in the ignition is because the transponder is being read fromthe key and the ECU is allowing the vehicle to start.
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Nov 22, 2011 • Prestige Remote Start
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Have a Ford transponder2 in a Nissan Xterra when I hit the remote starter the engine turns over but will not start. When I take the key out of the transponder wire coil and put it back in the car will...
So, this is a transponder key box, correct? And, the vehicle starts with the remote starter when you put the key in the ignition but, the vehicle will not start when you put the key in the key box, correct? If what I have explained above is the issue, there could be one of several problems. The key box may not be getting power and/or ground when running. Test to make sure. Next, the antenna ring going to the ignition cylinder may need to be adjusted to insure that the signal is being received by the vehicle. Next, if the vehicle starts with key in the ignition; also test that the remote starter works with the placed by the ignition cylinder (without being placed in the ignition). If the remote starter starts with the key IN the ignition but not with the key being placed BY the ignition cylinder, you may need to activate the key sense wire during remote start.
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Jan 15, 2011 • Code-Alarm Code Alarm Transponder
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It starts and runs, than shuts off 3 seconds later? i havent tried anything yet, and it was installed in 2002. jeep grand cherokee.
Do you have anti-theft system bypass module installed? Transponder key bypass? Try unlocking the doors with your factory Jeep remote (turns off alarm) and leaving the gray transponder key in the ignition cylinder. Then try activating your remote start. Sounds like one of the factory anti-theft systems is still active. Basically if the car's computer doesn't want it to run, the car won't run. You have to fool the car into thinking it is OK to start and stay running without the key and anti-theft device deactivated. You need to leave a transponder key in the vehicle under the dash to bypass that system. You can get a generic one for about $20. You MUST have 2 original gray transponder keys in order to program a third. There is a sequence of putting one key in the ignition, then the second, then the new blank key so the cars computer knows to allow that key also. If you do not have 2 original keys, then you need to go to someone that can program properly like dealership or some locksmiths or alarm shops. Then they usually charge about $100 for a second key. You don't have to have the key cut. That way if someone finds the spare transponder key in the vehicle, it wont turn the ignition cylinder. The anti-theft bypass module (factory alarm bypass) runs about $25. Bulldog Security or JBS model 791 should work for your vehicle. If you live in an area where car thefts are common, you may not want to bypass these factory security measures.
Hope this information helps.
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Nov 02, 2010 • Prestige Remote Start
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My remote start will not work. The engine starts
It is probably the transponder bypass. Try this: Put a key in the ignition (do not turn on or to acc, just put it in) and hit the remote starter remote. If it starts, your transponder bypass is bad. I had this same problem. I have not been able to find just this part from Chrysler (you might).

You can purchase two types of bypasses. One actually uses a transponder key inside. The other is a computer chip that is programmed just like the transponder key. Your choice. Just do a search for "transponder bypass" and do a little research.

I used the TBKIII. Key & unit added up to $21.00. However, it only works with remote start. If I try to start with the key, it shuts down because it is picking up the key and the key in the bypass. Unit has a bypass for this, but I still have not found the correct answer to make it work. Good luck.
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Mar 01, 2010 • 2005 Chrysler Town & Country
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I have an o3 ford escape with an aftermarket autopage remote start system.when i try to use the remote start it flashes the parking lights and all the accesories fire up but will not ingauge the starter....
the issue is the securilock system I installed one in my 03. You need a spare coded key (one that starts the vehicle) and a Bulldog 791 kit. ths will store the spare key and tell the vehicle it is not being stolen. Its the only way unless you want to leave your key in the ignition. BTW, the Theft light is on when you engage the remote started w/o the key in the ignition, Been there.
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Dec 27, 2009 • 2003 Ford Escape
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I installed a remote car starter. I was wondering
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Dec 16, 2009 • 1997 Chevrolet Lumina
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I have installed a bulldog security rs82p on a 2004 merc sable. The bypass module used was originally labeled as a model 20402,23402,27402,&29402. This is now the 791 the unit turns on but does NOT...
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