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Coded Car Keys

06/19/2010 4:44 PM

I recently had a potentially expensive close call. My gym locker was broken into and the most valuable item in the locker was the key to my truck. Fortunately something interrupted the thief. A friend of mine had recently lost a coded key to his Ford and I believe the dealer charged him upwards of $250 to replace the key.

I did some investigating including the most basic, reading the owner's Manual and found out that if you have two working keys for my dodge and many other vehicles the vehicle will actually code a new blank code key by following the instructions in the Manual.

The keys are available online and of course must be cut by a professional and from that point the owner's Manual will instruct you how to use your two existing keys to code a new key. In my case I purchased two keys for about $17.00 apiece without the remote alarm functions. The coded keys will disarm the alarm even if it has been set and will also start the vehicle. I figured at the very least if someone breaks into my locker a key without a remote alarm function it will make it difficult to locate the vehicle they might want to steal.

Just in FY I for those like myself who may not have known about the capability of many vehicles coding their own keys or have not thought about the expense of a lost key. Making a key before you lose one can save you a couple hundred dollars.

http://www.autotransponder.com/car_keys?gclid=COrR6e_-rKICFRNZiAod6CweRA

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#1

Re: Coded Car Keys

06/19/2010 6:19 PM

I checked out the dealer price for a replacement key for my Alfa (in case I need one - I have two, but one's quite worn). Dealer quoted £500 (≈$740), for blank + cutting + programming.

I've found places that can cut that down to about £100, but it's still a lot of money for a car key!

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#2
In reply to #1

Re: Coded Car Keys

06/19/2010 6:55 PM

And I was upset when I thought I was going to have to pay $250 for a key, for $750 if you're lucky you can find a used car that will last a year or two over here.

I haven't seen any reduction in my auto insurance rates related to my vehicle supposedly being theft resistant. However the cost of a lost key or a replacement key as in your case has certainly increased dramatically.

I have not done any investigation to the effectiveness of these types of keys in preventing auto theft. However past experience would suggest that there are ways around the technology, either technological, or as simple as breaking into a gym locker.

In the long run I think we the consumer will be the loser on this one, between the price of replacement keys and the added components to maintain in the vehicle (heaven only knows what an ignition switch costs) if I had a choice I would not want the feature on my vehicle.

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#3

Re: Coded Car Keys

06/19/2010 7:33 PM

A locksmith gave me a tip (after the fact). The weight of a large group of keys and the motion can cause wear on the key and tumbler pins.

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#4
In reply to #3

Re: Coded Car Keys

06/20/2010 2:05 AM

Good advice! I might have to alter my keyring for my truck, the key for the bike comes off the ring when I ride (don't like damage to the top of keyplate and triple tree).

More good advice is to find out if there are any tricks to unlocking your imobilizer if it ever needs reset.

While stationed in England, one of the AAFES cars (think it was a ford mondeo) stopped working. The key would open doors and turn ignition, but wouldn't turn over the engine. The dealership gave up after a few tries and gave some story about it being out of their hands because of the way the car had been bought (no warranty). The poor car sat for over a year until a former tow truck driver took the key and a fresh battery to the car and with some crazy combination of unlocking the drivers door and turning the ignition was able to reset the imobilizer and then it started like it never had a problem!

Drew

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#5

Re: Coded Car Keys

01/07/2012 5:59 PM

Certain cars do allow you to use two existing transponder keys to program in additionals. This is called OBP ( on board programming ).

Replacement keys can be bought online, but I recommend going to a good locksmith.

It is IMPERATIVE to NEVER use battery-powered circuit keys to replace true RFID based keys. Everyone is trying to get rid of their inventory of these, as they will not be produced in the coming months... so guess where they dispose of em ?

Also, if one of your two keys is a "clone" of the other... meaning they both carry the same id stream, the OBP will NOT work, as the vehicle will not be seeing two distinct key identities.

A Locksmith should always MEASURE out your old key, cut a test key on their CNC or other code machine... test it in your doors and trunk ( on cars that still have such a thing ), then proceed to cut a fresh perfect transponder key.

It might cost slightly more than online, but you will get a BETTER key, without the wear and tear transferred from the old key to the new.

Plus you will get the right kind of chip in the key!

At my shop, we give a deep discount on each additional key, since we already have the cnc machine set up for cutting it.

MOST FORD/LINCOLN/MERCURY and CHRYSLER/DODGE/JEEP up until recently, will program this way.

On GM, some require only one existing, others require two existing keys for this purpose.

All other vehicles, or vehicles where no keys remain, require a good locksmith to program with a scan tool. Most general mechanic equipment can not do security protocols.

Locksmiths have access to the manufacturers' security database for intellectual data needed to program many car keys. This is separate from regular TSB databases by most carmakers. One has to pass a tough background check and other criteria to gain access. This keeps the public assured the sensitive info is not just "out there"

Jeff

The Locksmith

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