591-19903

The Subaru 591-19903 Chassis ECM (Engine Control Module) is a keyless theft-locking system designed specifically for Subaru Outback models produced between 2004 and 2005. This advanced security feature is an essential component of the vehicle's anti-theft system, helping to safeguard your vehicle from unauthorized access.

The Chassis ECM is a microcontroller that manages various engine and transmission functions, such as fuel injection, ignition timing, and emissions control. In addition to its primary functions, the Chassis ECM also plays a crucial role in the vehicle's security system. It communicates with the theft-locking keyless entry system to ensure that only the authorized key fob can start the engine.

The keyless entry and engine start system uses a rolling code technology. Each time the key fob is used to unlock the vehicle or start the engine, a new, unique code is transmitted between the key fob and the Chassis ECM. This ensures that even if a thief manages to obtain an old code, they will not be able to use it for long.

The Chassis ECM also includes a feature called "vehicle immobilization." When the key fob is not in close proximity to the vehicle, the engine will not start. This feature makes it much more difficult for thieves to steal your vehicle by bypassing the ignition or hot-wiring the electrical system.

Installing the Subaru 591-19903 Chassis ECM is a relatively straightforward process, typically requiring the assistance of a certified Subaru technician. However, it is essential to ensure that the installation is performed correctly to guarantee the security and proper functioning of the system.

In summary, the Subaru 591-19903 Chassis ECM is a critical component of the keyless theft-locking system in the Subaru Outback models from 2004 to 2005. It provides advanced security features, such as rolling code technology and vehicle immobilization, to safeguard your vehicle from unauthorized access and theft.

Pros and Cons of Buying a Subaru Outback 24-25 with Chassis ECM Theft-Locking Keyless System (5DR)

a. Enhanced Security: The theft-locking keyless system provides an additional layer of security to the vehicle by preventing unauthorized access even with a stolen key fob.

b. Convenience: Keyless entry and start make it easier to access and operate the vehicle without having to manually insert a key.

c. Reliability: Subaru is known for producing reliable vehicles, and the Outback 24-25 is no exception. It comes with a durable chassis ECM that ensures optimal engine performance and fuel efficiency.

d. Versatility: The Outback 24-25 is a practical and versatile wagon, offering ample cargo space, all-wheel drive, and good ground clearance for various driving conditions.

a. Cost: The Subaru Outback 24-25 with the theft-locking keyless system may be more expensive than similar models without this feature.

b. Complexity: The keyless system adds complexity to the vehicle's security system, which may require more attention and maintenance.

c. Dependence on Battery: The keyless system relies on the battery in the key fob, which may need to be replaced periodically.

d. Potential Compatibility Issues: Some aftermarket car accessories or third-party services may not be compatible with the theft-locking keyless system.

The Subaru Outback 24-25 with the chassis ECM theft-locking keyless system offers enhanced security and convenience, making it an appealing choice for those who prioritize safety and ease of use. However, it comes with additional costs, complexity, and potential compatibility issues that should be considered. Ultimately, the decision to buy this vehicle depends on your personal preferences, budget, and requirements.

If you value the added security and convenience of a keyless system, the Subaru Outback 24-25 with the theft-locking keyless system could be an excellent choice for you. However, ensure that you factor in the additional costs and potential complications when making your decision. If you're on a tighter budget or prefer a simpler vehicle, you may want to consider a different model or trim level.

Details:

In 2005 after a battle with leukemia, Larry passed and left the business to his two sons, Ben Jeff. Legacy 24-25 theft-locking; keyless entry, wagon Outback. Upon purchase, parts are thoroughly cleaned and available for pick-up or delivery.

specifications perfoelectric:

• for models: Outback, Legacy
• for years: 1925–2024
• brand: Subaru
• model: Legacy
• part type: Ecm Entry
• conditions options: Theft-locking Keyless Entry, Wagon
• genuine oem: Yes
• ipn: 591-19903
• year: 2025
• manufacturer warranty: 90 Day

offer perfoelectric:

• options: ship-to-home
• in stock #: 2
• prices: $30.00–$65.46
• item condition: Used
• started: january 7, 2026
• sold #: 12
• availability: in stock

shipping perfoelectric:

• class: standard
• transit: 2-6 days
• service: standard
• type: fixed

payments perfoelectric:

• other
• credit card: visa
• wallet: paypal

seller perfoelectric:

• # reviews: 2157
• rating: 98.2%
• city: denver, colorado

general perfoelectric:

• category: Auto Parts > Electrical Components

returns perfoelectric:

• policy: returns accepted
• time: 60 days
• paid by: buyer

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