Dorman 99603ST Keyless Entry Transmitter

Overview

This Dorman keyless entry transmitter is a direct-style replacement for the original key fob on specified applications. It matches the look and function of the factory remote and requires programming with a compatible scan tool by a qualified professional.

Key Features

• Black remote with an integrated key design for a factory-style appearance.
• Three-button layout for standard keyless entry functions.
• Premium-grade construction with batteries included.
• OE FCC ID N14TMTX-1 for application matching.
• Part number 99603ST for easy identification and ordering.

Product Details

Built as a replacement or spare transmitter, this Dorman 99603ST keyless entry remote is made to mirror the original fob used on select Lexus RX300 models. The integrated key design and compact 4.625-inch by 2.875-inch by 2.125-inch housing support a factory-like fit and feel, while the three-button layout keeps operation straightforward. This part cross-references Monroe Shocks & Struts (e.g., 8907048020, LEX KEY 050 COMBO) for the same application.

Fits 1999-2003 Lexus RX300, N/A.

Common Uses

• Replacing a worn or missing factory key fob.
• Restoring remote locking and unlocking functions.
• Providing a spare transmitter for shared vehicle use.
• Addressing a remote that no longer pairs correctly after replacement.

Installation Notes

Programming is required with a compatible scan tool so the transmitter can be paired to the vehicle. Professional setup is recommended because the remote must be matched to the vehicle’s security system. Verify the OE FCC ID N14TMTX-1 and part number 99603ST before ordering.

Quality Assurance

Dorman manufactures this transmitter as a premium replacement part for specified applications, with design intent focused on matching original appearance and function.