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[3rd Gen : 96-00]: remote

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Old May 4, 2014 | 12:17 AM
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I bought a van from a friend and someone stole the remote and i wanna change the locks is there a way to disable the remote or if I change the locks will that reset the remote so no one can unlock it or anything with the old remote. Someone help me please
 
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Old May 4, 2014 | 10:55 AM
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$$$ only dealer. means new 2 keys and programing prob estimate 250 a key + programming is my guess.
maybe a few locksmiths I have heard can do this in usa but not sure.
 
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Old May 4, 2014 | 02:41 PM
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I had a similar question. We bought a used 2012 GC and it only came with one key/remote.

Of course this makes me nervous if the key gets locked inside or misplaced/lost.

I saw remotes on ebay, but wasn't sure how easy it'd be to get one and program it. didn't see anything in the owner manual about programming a 'blank' remote.

any ideas?
 
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Old May 4, 2014 | 03:09 PM
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Originally Posted by dodgethedaughter91
I bought a van from a friend and someone stole the remote and i wanna change the locks is there a way to disable the remote or if I change the locks will that reset the remote so no one can unlock it or anything with the old remote. Someone help me please
On 3rd generation vans you have the a key and a separate remote/fob. Not a single unit correct? Just the fob was stolen not the key correct?

Changing the locks will do no good. Get a new fob so you have two then have the dealer reprogram the keyless entry system. That should give you a new "code" making the stolen fob useless. Reprogramming should cost around $100.
 

Last edited by Cougar41; May 4, 2014 at 03:12 PM.
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Old May 4, 2014 | 09:34 PM
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Inside the BCM, or ECM depending on vehicle, there is a chip that does challenge-response cryptography for those dongles, and also the passive RFID(chip) keys if the vehicle has them. The two-key+new-key reprogramming can be done by you through BCM diag. procedures, one-key+new key requires a visit to a dealer where they have access to a programmer that uses a VIN database.. The same logic applies to a two-key+new-dongle scenario etc..

If you had no keys or no dongles you also go to the dealer, but they usually order a cut blade(snail mail) using blade-code and side-bar-wafer-tumbler-code from VIN database, and will THEN do the VIN flash in-house on dongle or key. If you've ever been told they had to replace a computer because of lost keys and/or dongles you were lied to. I've researched these systems going all the way back to the 80s corvettes.

The only differences over the decades is that some manufacturers used resistors in keys instead of RFID(early GM PASSKEY), and dongles went from fixed code, to rolling code(both pulse modulation). They've used 3xxMhz(US) and 4xxMhz(Euro+) since the beginning..

If you have around 1k you can actually buy a handheld device from JET that will flash a key off one key with no need for manufacturer databases etc.. Thieves use these and master-computers to steal cars..

I don't know the body-procedure to program a dongle off of two keys or another dongle, but the procedures DO exist inside your computers.. It's probably mentioned in the Mopar Body Diagnostics manual for your year, look on ebay..

EDIT: The procedure is inside your manual that comes with the vehicle.
 

Last edited by tjnc; May 6, 2014 at 12:17 PM.
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