Toyota D4S Ballast 8596745010 High Voltage Pack Computer Board DDLT004 Original Factory Position Installation

When your Toyota vehicle experiences starting delay, unstable idle, weak acceleration, or engine fault lights, it is likely the D4S igniter (high-voltage pack computer board) has aged and cannot stably control ignition voltage and timing. This part normally drives the spark plug ignition by converting low voltage to high voltage to ensure complete combustion and smooth power output. OEM number 8596745010; fits many Toyota models equipped with D4S system. Installation requires disconnecting the battery negative, and secure mounting of the original position to prevent high-voltage wires from contacting heat or vibrating components.