Servicing the 2008 – 2009 Chrysler 300C

The 300C is equipped with the Mercedes-inspired FOBIK system, which some refer to as a “Smart Key.”


As the Chrysler Corporation battles for its life in this new era of bailouts for the auto industry, we seem to forget that the Chrysler Corporation brought us some of the most innovative and interesting cars on the road today, including the original Mini-Vans, the PT Cruiser, and the 300C. The...


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If you carefully peel the moisture barrier back about half way, you can pull the vertical linkage rod free without damage. This will give you plenty of room to work inside the door.

The door lock is held in place by two 8mm bolts that also secure the rear of the outside handle to the door. This type of mounting is fairly typical of late model Chrysler products. Access to the two bolts is through an oval-shaped hole in the inner skin of the door that is covered by a small piece of clear plastic.

Be careful as you remove the bolts not to drop them inside the door. If you do drop one, it can usually be retrieved with a magnet.

The forward edge of the handle does not need to be released. After the two bolts at the rear of the handle have been removed, the handle will pull out far enough for you to work the lock through the hole in the door and into the inside of the door.

After releasing the lock linkage rod, the lock will come free of the door easily. Six out of seven of the tumblers can be seen easily though the drain-hole, so if you are just making a key for the lock, you can now get all but one of the cuts necessary. After progressing the seventh cut, you will have a working key. If you are working on an earlier version of this vehicle that does not have the FOBIK system, you will still need to progress one more cut in the ignition lock for a finished key.

If you need to disassemble the lock, the tailpiece is secured to the plug with a standard “E” clip. The face cap is reusable, if you are gentle as you pry it free of the lock housing. After the tailpiece and the face cap have been removed, the lock plug will slide out of the housing.

With the plug free of the housing, you can now rekey or repair the lock using standard Chrysler 8-cut door wafers. The STRATTEC part number for this kit is 703927.

FOBIK Programming

Programming for the FOBIK system requires a vehicle specific “Immobilizer Code” that is also known in locksmithing circles as the “PIN Code.” In my experience, if you have the VIN, this number can be obtained from roadside assistance providers, such as Cross Country Automotive Services. I have also obtained the PIN Code from Chrysler/Dodge/Jeep Dealers. Their requirement is you must prove that you are a legitimate locksmith in order to obtain the Immobilizer Code.

You can either sign up with a roadside service provider, or go to your local dealer. I recommend that you do both. I usually use my local dealer during normal business hours, and a roadside provider on weekends and after hours. Whenever possible, I go in person to the dealer to get the “Immobilizer Code” rather than using the telephone. The reason for this is so that the dealer will get to know me, and I what I can do for them. I usually leave a business card and remind them that I can do a lot more than just Chrysler vehicles. As a result, I get referrals and a lot of the dealerships’ business for used vehicles.

Whenever I am dealing with the dealership or the roadside providers, I always use the term “Immobilizer Code” rather than “PIN Code.” The reason for this is that is the terminology that they understand. “PIN Code” is simply a generic nickname that locksmiths have adopted for any codes that are necessary to program transponder keys. If you use the wrong terminology with a dealer, they usually won’t know what you’re talking about. Using the proper terminology also lets them know that you know what you are doing, and that you are a professional.

There are devices on the market that will let you pull the Immobilizer Code directly from the computer on the car, rather than getting the code through official channels. The most effective device that I have seen for this is the Chrysler Skim Reader available from Lockmasters, Inc. (Part number CHRYSKIM). This tool interfaces with a laptop computer and the vehicle to pull the Immobilizer Code directly from the vehicle. This tool can be a great time saver, especially at night and on weekends. Immobilizer Code retrieving software upgrades are available for multi-function programming devices.

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