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  #13  
Old 08-14-2013, 04:14 PM
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Re: Kid locked in car

It might be acting funny since it's low on juice. I had a G.M remote that would set the alarm off when it was getting ready to die. The electric interference theory is a bit of a stretch to me unless you live near a military base. LOL Get a new battery and do some experiments. Hopefully, everything will operate as it should. if not, the fob might have been dropped one too many times! LOL Good luck!
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  #14  
Old 08-14-2013, 04:16 PM
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Re: Kid locked in car

Quote:
Originally Posted by Willx View Post
well, it can't there still would have been some inadvertant locking of the vehicle. but if the battery was dead or really low it would have allowed it.
Is not the fob detected by the veh via RFID which has nothing to do with the fob transmitter or it's battery?
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Old 08-14-2013, 04:19 PM
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Re: Kid locked in car

Quote:
Originally Posted by AZhiCntry View Post
Is not the fob detected by the veh via RFID which has nothing to do with the fob transmitter or it's battery?
Yes and no, I would need to look for the info but you need to place it in a certain place to be detected if the battery is dead. Very similar on all Push and go/passive entry systems. They often have a place called the "coffin" where a dead remote can be placed to start the vehicle. As I am not quoting specific to the JGC, I will look it up.

Edit: courtesy of WK2Jeeps.com


NOTE:
In case the ignition switch does not change with
the push of a button, the RKE transmitter (Key Fob) may
have a low or dead battery. In this situation a back up

method can be used to operate the ignition switch. Put
the nose side (side opposite of the emergency key) of the
Key Fob against the ENGINE START/STOP button and

push to operate the ignition switch.
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Old 08-14-2013, 04:23 PM
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Re: Kid locked in car

Not that this is a solution to your current issue, but when I am piling the kids into the wifes car (2013 Explorer which also has keyless) I always crack the driver window enough to reach inside to unlock the doors.

This all stems from 11 years ago when I was at a gas station and left the keys dangling in the ignition and the doors auto locked as I was pumping gas....luckily a fire station was across the street.

Good luck
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  #17  
Old 08-14-2013, 04:24 PM
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Re: Kid locked in car

Quote:
Originally Posted by Willx View Post
I have a 2011 Durango and the only way you can get it to lock while a FOB is inside is buy double pressing a lock button... or something to that affect. I will need to look again but it is not easy. It gives you a warning beep.

I am going to check though. We do lock a Fob in the car from time to time for someone esle to pick up and it is tough to do sometimes because I forget how to do it.
On 2014 JGC you can lock the fob inside the veh by using the door panel switch if no fob is detected outside the veh. On the third attempt of using the door panel switch all doors will lock according to the owners manual.
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Old 08-14-2013, 04:25 PM
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Re: Kid locked in car

Quote:
Originally Posted by Willx View Post
Yes and no, I would need to look for the info but you need to place it in a certain place to be detected if the battery is dead. Very similar on all Push and go/passive entry systems. They often have a place called the "coffin" where a dead remote can be placed to start the vehicle. As I am not quoting specific to the JGC, I will look it up.

Edit: courtesy of WK2Jeeps.com


NOTE:
In case the ignition switch does not change with
the push of a button, the RKE transmitter (Key Fob) may
have a low or dead battery. In this situation a back up

method can be used to operate the ignition switch. Put
the nose side (side opposite of the emergency key) of the
Key Fob against the ENGINE START/STOP button and

push to operate the ignition switch.

You know whats sad.(other than reading the 2014 owners manual online today) is that I was going to quote this and say it is to put the key within 1/2" of the pushbutton but the quote reply showed more info than the post I just read.

Willx...you are to quick with this stuff
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  #19  
Old 08-14-2013, 04:33 PM
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Re: Kid locked in car

Quote:
Originally Posted by CNY_WK2 View Post
You know whats sad.(other than reading the 2014 owners manual online today) is that I was going to quote this and say it is to put the key within 1/2" of the pushbutton but the quote reply showed more info than the post I just read.

Willx...you are to quick with this stuff
Thanks, I try!
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  #20  
Old 08-14-2013, 04:46 PM
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Re: Kid locked in car

Quote:
Originally Posted by Willx View Post
Yes and no, I would need to look for the info but you need to place it in a certain place to be detected if the battery is dead. Very similar on all Push and go/passive entry systems. They often have a place called the "coffin" where a dead remote can be placed to start the vehicle. As I am not quoting specific to the JGC, I will look it up.

Edit: courtesy of WK2Jeeps.com


NOTE:
In case the ignition switch does not change with
the push of a button, the RKE transmitter (Key Fob) may
have a low or dead battery. In this situation a back up

method can be used to operate the ignition switch. Put

the nose side (side opposite of the emergency key) of the
Key Fob against the ENGINE START/STOP button and



push to operate the ignition switch.

This would seem to indicate but not confirm that the RKE fob is transmitting 24/7??? Or is it just that there is a longer and a shorter range RFID chips in the fob? Very short range for starting the veh and longer for detecting the fob inside or near the veh.?
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Old 08-14-2013, 04:54 PM
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Re: Kid locked in car

Quote:
Originally Posted by AZhiCntry View Post
This would seem to indicate but not confirm that the RKE fob is transmitting 24/7??? Or is it just that there is a longer and a shorter range RFID chips in the fob? Very short range for starting the veh and longer for detecting the fob inside or near the veh.?
Actually, this I can answer because I have done entire projects with RFID. The RFID part of the unit is completely passive but extremely short range, for whatever reason they do this on all of the cars (with this style of RF Start). The active part of the FOB is RF but is active and not always transmitting. when you touch the handle there is a very brief RF exchange between the vehicle and the fob that sets the Driver #. The sensor in the dash for the passive RFID has been there for many years and was not reliant on passive entry at all. They just took away the "turn" part.

We got to tag an entire group of people in Monaco a bunch of years back to track which meetings they attended (tax issue) and got to learn all about the different ranges and types of proximity they use. The Keys are actually closer to NFC (Near Field Communications).
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  #22  
Old 08-14-2013, 05:20 PM
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Re: Kid locked in car

Quote:
Originally Posted by Willx View Post
Actually, this I can answer because I have done entire projects with RFID. The RFID part of the unit is completely passive but extremely short range, for whatever reason they do this on all of the cars (with this style of RF Start). The active part of the FOB is RF but is active and not always transmitting. when you touch the handle there is a very brief RF exchange between the vehicle and the fob that sets the Driver #. The sensor in the dash for the passive RFID has been there for many years and was not reliant on passive entry at all. They just took away the "turn" part.

We got to tag an entire group of people in Monaco a bunch of years back to track which meetings they attended (tax issue) and got to learn all about the different ranges and types of proximity they use. The Keys are actually closer to NFC (Near Field Communications).
Trying to understand a little better. The passive part is same "chip key" tech that been around for years.

For the active part, your saying the key fob is actually always "listening" for the car? For example, I touch the handle, the car says "marco" and the key says "polo" and viola, door unlocks. Assuming the for some length of time after the initial call/response or when the vehicle is running, the same exchange occurs at some interval to check to see if the key answers back.

If this is how it works, is there a point where the jeep stops calling marco and could therefore forget the key is still inside?
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  #23  
Old 08-14-2013, 05:32 PM
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Re: Kid locked in car

Now you are getting into specifics that I am not totally sure on... but I can tell you this.

-If you go to open your vehicle less than 15 minutes after you shut it down the unlock happens slightly faster, because components in the car are actively checking things still
-At any time any action of lock or unlock needs to happen the vehicle does a little checklist including "is the key in the car"

For the rest of it... I may need to do a little exploration. Likely a good answer to your question is, roll down the window and throw the remote out onto the lawn and see if the car notices the fob is gone before or after you open the door to go get it.

I also know this. If the Car is OFF and there are doors open that after about 15 minutes, the car does stop doing anything. However a door opening, closing or a lock request will cause it to check the key status again.

You marco, pollo is a good example though, transponders in vehicles work the same way, they are woke up by the overpass signal and respond with their code. That is why the batteries in those last so long (like the key fobs) The near field stuff was need though in case the FOB broke. We have done some limited testing with this on the cadillacs. The FOB can actually be broken and non functioning and will still work in it's "coffin"

Quote:
Originally Posted by weck View Post
Trying to understand a little better. The passive part is same "chip key" tech that been around for years.

For the active part, your saying the key fob is actually always "listening" for the car? For example, I touch the handle, the car says "marco" and the key says "polo" and viola, door unlocks. Assuming the for some length of time after the initial call/response or when the vehicle is running, the same exchange occurs at some interval to check to see if the key answers back.

If this is how it works, is there a point where the jeep stops calling marco and could therefore forget the key is still inside?
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  #24  
Old 08-14-2013, 05:44 PM
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Re: Kid locked in car

I took the battery out of one fob and placed inside the veh on the center arm rest. I could not lock the veh using any of the outside buttons. I could lock it by using the other fob pressing the lock button. I could also lock it by using the door panel switch and closing the door. So there is some type of communication going on between the fob and the veh even without the battery in the fob. It's very strange how it affects the locking system.
After my JGC locked itself the other day with a fob inside without any buttons being pushed or any direct attempts to lock the veh I can no longer trust that it will not do this again so I now have a hidden key on the veh.
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