
591-00665 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $129.95 | Condition is Used, 01- 02 MERCURY GRAND MARQUIS KEYLESS ENTRY MODULE 1W7T-13C791-AC, FREE SHIPPING | 99.9% |

The Mercury 591-00665 Chassis ECM Theft-Locking Keyless System is an advanced security feature designed specifically for select 2001 and 2002 Ford Crown Victoria models. This state-of-the-art anti-theft device is integrated into the Engine Control Module (ECM) of your vehicle, providing an additional layer of protection against car theft.
The system is keyless, meaning there is no need to carry an ignition key. Instead, it utilizes a unique personal identification number (PIN) to allow access to your vehicle. The PIN is entered using the steering column switch or the remote keyless entry transmitter. This keyless feature not only makes it more convenient for the vehicle owner but also eliminates the risk of lost or stolen keys.
The Mercury Chassis ECM Theft-Locking Keyless System is designed to prevent unauthorized access to your vehicle. When the system is armed, the engine will not start unless the correct PIN is entered. This feature deters thieves who attempt to hotwire the vehicle or bypass the ignition system.
Furthermore, this system comes with a feature called "valet mode." When activated, the valet mode disables the keyless entry function, ensuring that unauthorized individuals cannot access your vehicle without your knowledge. This feature is particularly useful when you need to leave your vehicle with someone you don't trust completely.
The Mercury 591-00665 Chassis ECM Theft-Locking Keyless System is easy to install and comes with clear instructions. It is also compatible with the factory alarm system, providing an added level of security. The system is designed to be reliable and durable, ensuring that it continues to protect your vehicle even in harsh conditions.
In summary, the Mercury 591-00665 Chassis ECM Theft-Locking Keyless System is an advanced security feature for select 2001 and 2002 Ford Crown Victoria models. It is a keyless system that utilizes a unique PIN to prevent unauthorized access and start the engine. It also comes with a valet mode feature and is easy to install. This system offers peace of mind and protection against car theft.
Mercury 591-00665 Chassis ECM Theft-Locking Keyless (01-02 Crown Victoria): A Comprehensive Analysis
Introduction:The Mercury 591-00665 Chassis ECM Theft-Locking Keyless system is designed for select Ford and Mercury vehicles, including the 2001 and 2002 Crown Victoria models. This system aims to enhance security against car theft by employing an immobilizer that requires a specific code to start the engine. In this analysis, we will discuss both the advantages and disadvantages of installing this system in a Crown Victoria.
Advantages:1. Enhanced Security: The primary advantage of the Mercury 591-00665 Chassis ECM Theft-Locking Keyless system is its ability to deter car theft. By requiring a valid code to start the engine, the system makes it more difficult for thieves to steal the vehicle.
2. Peace of Mind: With the added security provided by the Mercury 591-00665 Chassis ECM Theft-Locking Keyless system, vehicle owners can experience peace of mind knowing that their Crown Victoria is protected against theft.
3. Compatibility: The system is specifically designed for 2001 and 2002 Crown Victoria models, ensuring a seamless installation and integration with the vehicle's existing electrical and mechanical systems.
Disadvantages:1. Cost: Installing the Mercury 591-00665 Chassis ECM Theft-Locking Keyless system can be expensive, as it requires professional installation and the cost of the system itself.
2. Convenience: While the system offers enhanced security, it can also pose some inconvenience. For instance, if a driver loses their key fob or forgets the code, they may need to call a locksmith or dealership for assistance, which can be time-consuming and costly.
3. Complexity: The system's complexity can also lead to potential issues. For example, if the battery dies or the system malfunctions, the vehicle may not start, necessitating professional assistance.
Conclusion:The Mercury 591-00665 Chassis ECM Theft-Locking Keyless system offers significant advantages in terms of enhanced security and peace of mind for Crown Victoria owners. However, it comes with potential disadvantages, such as cost, inconvenience, and complexity. Ultimately, the decision to install this system depends on an individual's priorities, budget, and willingness to accept the potential drawbacks.
Recommendation:If you own a 2001 or 2002 Crown Victoria and are concerned about the risk of car theft, the Mercury 591-00665 Chassis ECM Theft-Locking Keyless system could be a worthwhile investment. Weigh the advantages and disadvantages carefully, considering your budget, personal preferences, and the level of security you desire. If you decide to proceed, ensure that the installation is performed by a professional to minimize potential issues.
Details:
Grand marquis 01-02 theft-locking; keyless entry LHS door. Crown Victoria 01-02 theft-locking; keyless entry LHS door.
specifications perfoelectric:
- for models: Crown, Victoria
- for years: 2001–2002
- brand: Mercury
- part type: Ecm Entry
- conditions options: Keyless Entry
- genuine oem: Yes
- ipn: 591-00665
shipping perfoelectric:
- type: fixed
- class: standard
- service: standard
- transit: 3-8 days
general perfoelectric:
- category: Auto Parts > Electrical Components
returns perfoelectric:
- time: 60 days
- paid by: buyer
- policy: returns accepted
payments perfoelectric:
- wallet: google-pay
- credit card: mastercard
- other
seller perfoelectric:
- city: ontario, oregon
- # reviews: 228
- rating: 100.0%
offer perfoelectric:
- started: september 8, 2025
- in stock #: 1
- best offers: true
- options: ship-to-home
- sold #: 17
- price: $129.95
- item condition: Used
- availability: in stock
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