Driver's Side Power Window Switch Intermittent/Auto Function Lost - Contact Cleaning

Electricalbeginner✓ OP Confirmed

Problem

Driver's side power window master switch losing functionality over time. Auto wind up/down function no longer works, and overall switch operation is unreliable.

Auto wind up function lostAuto wind down function lostSwitch still works but intermittentlyDegraded switch performance over time

Root Cause

Carbon buildup and oxidation on the internal contact points of the power window master switch, causing poor electrical contact and loss of functions like auto up/down.

Confidence

Moderate confidence — Original poster confirmed this resolved the issue

View Original Thread →Posted February 2023 on SupraForums.com