Subaru Battery Keeps Draining - DCM Fix

Описание: My 2019 Subaru WRX started experiencing battery drain issues, and after some troubleshooting, the culprit turned out to be a faulty DCM (Data Communication Module) — a known problem on some Subarus.

In this video, I walk through how to remove and replace the DCM unit, then test the car afterward to confirm the parasitic drain is gone and the issue is fixed. If you’re dealing with a dead battery, random no-starts, or unexplained drain, this is a common place to look.

This is the unit I purchased from AutoHarnessHouse to replace the DCM: https://www.autoharnesshouse.com/6901...

This is the TSB out by Subaru for the issue: https://static.nhtsa.gov/odi/tsbs/202...

Straightforward diagnosis, hands-on repair, and real-world verification.

Fixing the problem instead of just replacing batteries. 🔧🚗

#subaru #wrx #autorepair

Chapters:
00:00 - Intro
00:36 - DCM Overview
01:17 - AutoHarness Starlink Bypass Plug
02:48 - DCM Bypass Plug Install
03:13 - Headunit Installed
03:30 - DCM Fuse Location
04:05 - Test Draw with Multimeter
04:58 - Start and Test
05:20 - Outro