TOYOTA 89070-0K674 Door Transmitter Assembly with Blank Key

This genuine TOYOTA door transmitter assembly and blank key (Part Number: 89070-0K674) is a premium quality, original OEM replacement component designed to ensure the flawless and secure operation of the vehicle's central locking and engine immobilizer systems. This part is a direct replacement for part number 890700K672.

Technical Characteristics and Specifications:

• Manufacturer: TOYOTA (Genuine OEM)
• Part Number: 89070-0K674 (Supersedes / Replaces: 890700K672)
• Part Description: Door transmitter assembly with blank key (Transmitter Assy, Door & Blank Key)
• Function: Radio-frequency remote control (lock/unlock) and immobilizer transponder signal transmission
• Condition: Assembly equipped with an uncut key blade, requiring vehicle-specific mechanical key cutting and electronic programming

Operating Principle and Importance:

The transmitter assembly is an essential component of the modern vehicle's convenience and security systems. When the buttons are pressed, it transmits an encrypted rolling-code radio-frequency signal to the vehicle's central control module, minimizing the risk of signal interception and unauthorized access. The transponder chip integrated into the key head communicates with the immobilizer system; the engine can only be started when the system recognizes the key's unique identification code.

Typical Signs of Wear and Failure:

• Physical Button Damage: Wear or tearing of the rubber/plastic casing, or contact failure of the internal microswitches.
• Signal Transmission Issues: Reduced operating range or complete loss of function that is not resolved by replacing the battery (internal circuit failure).
• Mechanical Wear: Following key cutting, the key blade can wear down or bend over time, which may cause damage to the ignition lock cylinder.
• Immobilizer Malfunction: The vehicle fails to recognize the key, causing the engine to stall immediately after starting or fail to crank at all, accompanied by an illuminated security indicator light.

Notice: Prior to use, this key requires mechanical cutting (milling) and electronic pairing (programming) to the vehicle's onboard computer system by a qualified professional workshop.