The trigger assembly. If the tool runs intermittently or the LED light stays on/off, this is the likely culprit.

The Hilti SID 4-A22 is a professional-grade 22V cordless impact driver known for its reliability, compact design, and high torque. Despite its robust build, regular field use eventually requires maintenance, part replacements, or repairs.

Which is broken or malfunctioning? (e.g., chuck, trigger, motor)

Understanding Your Hilti SID 4-A22: A Complete Parts Diagram and Repair Guide

The electronic speed regulator (#2148041) manages speed and torque, crucial for delicate tasks.

: The internal wiring and motor connection unit. Technical Specifications