Losing or needing a replacement key fob for your 2007 Chrysler Aspen can be a hassle. Luckily, programming a new key fob can sometimes be done at home, saving you a trip to the dealership. This guide, based on your owner’s manual, will walk you through the process and help you understand your options.
Before we begin, it’s crucial to understand the Sentry Key Immobilizer System in your Chrysler Aspen. This system is designed to prevent unauthorized vehicle operation. Only keys specifically programmed to your vehicle will start the engine. Once a key is programmed to your Aspen, it cannot be used for any other vehicle. For security reasons, always remove your key fob and lock your doors when leaving your vehicle unattended.
According to Chrysler, ideally, you should have received a four-digit Personal Identification Number (PIN) when you originally purchased your Aspen. This PIN is essential if you need a dealer to replace your keys. Keep this PIN in a safe place.
There are two main scenarios for programming a 2007 Chrysler Aspen Key Fob:
Scenario 1: You Have Two Existing, Valid Key Fobs
If you are fortunate enough to have two working key fobs, you can program additional key fobs yourself. Here’s how:
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Get a Compatible Key: First, you’ll need a new, unprogrammed Sentry Key Transponder blank that is cut to match your ignition switch lock cylinder key code. You can typically get this done at a locksmith or dealership.
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First Valid Key Insertion: Insert your first valid, working key fob into the ignition switch. Turn the ignition to the ON position. Hold it in the ON position for at least three seconds, but no longer than 15 seconds. Then, turn the ignition back to the LOCK position and remove the key.
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Second Valid Key Insertion: Within 15 seconds of removing the first key, insert your second valid, working key fob into the ignition switch. Turn the ignition to the ON position. After approximately 10 seconds, you will hear a chime, and the Vehicle Security Alarm Indicator Light on your dashboard will start to flash. Turn the ignition switch to the LOCK position and remove the second key.
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New Key Programming: Now, within 60 seconds, insert the new, unprogrammed key fob into the ignition switch. Turn the ignition switch to the ON position. After about 10 seconds, you’ll hear a single chime, and the Vehicle Security Alarm Indicator Light will stop flashing. The light will then turn on again for three seconds and then turn off. This sequence confirms that the new key fob is successfully programmed, including the Remote Keyless Entry transmitter functions.
You can repeat this entire procedure to program up to a total of eight key fobs for your 2007 Chrysler Aspen.
Scenario 2: You Have Only One or No Working Key Fob
If you only have one working key fob, or if you have lost all your key fobs, the customer programming procedure will not work. In this situation, you will need to visit an authorized Chrysler dealer to have new key fobs programmed. Dealers have the necessary diagnostic equipment to bypass the two-key requirement and program new keys directly to your vehicle’s system.
Important Notes and Cautions:
- Dealer Programming is Necessary in Some Cases: If you don’t have two working keys, going to the dealer is mandatory for programming new key fobs.
- Bring All Keys to Service: When visiting a dealer for any Sentry Key Immobilizer System service, always bring all of your vehicle’s key fobs with you.
- Lost Key Security: If you lose a programmed key fob, it’s highly recommended to visit your dealer to have all remaining keys erased from the system’s memory. This prevents the lost key from being used to start your vehicle if it falls into the wrong hands. After erasing, your existing keys will need to be reprogrammed.
Programming a 2007 Chrysler Aspen key fob can be straightforward if you have two existing keys. However, if you’re down to just one or none, a trip to your Chrysler dealer is necessary for security and proper programming. Always prioritize security and ensure all your key fobs are accounted for and correctly programmed to your vehicle.
