591-75990

The Lexus ES 300h with chassis ECM part number 591-75990 is an advanced security feature designed to enhance the protection of your vehicle against theft. This particular component is a Theft-Locking Keyless Ignition system, which was available in certain Lexus ES 300h models between the years 2016 and 2018.

This system works by integrating an advanced security chip into the key fob, which communicates with the Engine Control Module (ECM) in the vehicle. When the vehicle is turned off, the ignition system is disabled to prevent unauthorized access and starting of the engine. The driver can only start the engine by pressing the "Start" button on the key fob, which sends a secure signal to the ECM to enable the ignition system.

The Theft-Locking Keyless Ignition system provides an extra layer of security by preventing the engine from being started if the key fob is not present or if the signal from the key fob is not authentic. This feature deters thieves from attempting to steal the vehicle by hot-wiring the ignition system, as they would not be able to bypass the security chip in the key fob.

Additionally, this system may include a feature called "SmartAccess," which allows the driver to unlock the doors and trunk of the vehicle without using the key fob, as long as they are in close proximity to the vehicle. The system uses sensors to detect the presence of the key fob and automatically unlocks the doors. This feature not only adds convenience but also enhances the security of the vehicle by ensuring that only the authorized key fob can unlock the doors.

The 591-75990 chassis ECM Theft-Locking Keyless Ignition system is a crucial component of the vehicle's security system and should be installed and programmed by a qualified technician to ensure proper functionality. This system is designed to work seamlessly with the other security features of the Lexus ES 300h and provides peace of mind to the vehicle owner by deterring potential thieves and protecting their investment.

In summary, the 591-75990 chassis ECM Theft-Locking Keyless Ignition system for the Lexus ES 300h is a sophisticated security feature designed to enhance the protection of your vehicle against theft. This system uses a secure communication between the key fob and the Engine Control Module to disable the ignition system when the vehicle is turned off and to enable it only when the authentic key fob is present. The system also includes a SmartAccess feature for added convenience, and it should be installed and programmed by a qualified technician for proper functionality.

The Lexus ES 300h with the chassis ECM (Engine Control Module) theft-locking keyless ignition system (16-18 model years with the part number 591-75990) is an advanced security feature designed to enhance the vehicle's anti-theft capabilities. This system uses a secure communication between the key fob and the ECM to prevent unauthorized access and engine start.

1. Enhanced Security: The theft-locking keyless ignition system adds an extra layer of security to your vehicle by requiring a valid key fob signal to start the engine.

2. Convenience: The system allows for convenient keyless entry and starting, but only when the correct key fob is present.

3. Peace of Mind: Knowing that your vehicle is protected by a sophisticated security system can provide peace of mind and reduce stress.

1. Cost: The theft-locking keyless ignition system is an additional cost on top of the base price of the ES 300h.

2. Compatibility: This specific system is only compatible with the ES 300h models from 2016 to 2018, so it may not be an option for older or newer models.

3. Complexity: The system adds another level of complexity to the vehicle's electrical system, which could potentially lead to issues or complications in the future.

In conclusion, the Lexus ES 300h with the theft-locking keyless ignition system (591-75990) offers enhanced security features and convenience for its owners. However, it comes with a cost, compatibility limitations, and added complexity. Ultimately, the decision to purchase this system depends on the individual's priorities, budget, and specific vehicle needs.

If you value the added security and convenience, and your ES 300h falls within the compatible model years, then this system could be a worthwhile investment for you. Alternatively, if the cost or complexity is a concern, you may want to consider other security measures or focus on other vehicle features.

Details:

Donor vehicle. See below for fitment information and any notes pertaining to this specific part. It is tested and comes with a 90 day warranty. For more parts from this vehicle.

Year: 2017, model: ES300H, stock #: c7137, mileage: 173000. This part will only fit: Lexus ES300H 16-18 theft-locking; keyless ignition, smart key, Rh dash.

specifications perfoelectric:

• for models: Es300h
• for years: 2016–2018
• brand: Lexus
• part type: Ecm Ignition
• genuine oem: Yes
• ipn: 591-75990
• year: 2017
• manufacturer warranty: 90 Day

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• category: Auto Parts > Electrical Components

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• policy: returns accepted
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offer perfoelectric:

• in stock #: 4
• availability: in stock
• prices: $90.29–$206.08
• item condition: Used
• sold #: 10
• started: april 3, 2026
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