ECM reset

Reply Subscribe

Thread Tools

Search this Thread

Sep 28, 2020 | 02:05 PM

CWOFOR

Thread Starter

Tourer

Joined: Apr 2017

Posts: 403

Likes: 201

From: Menominee, MI

ECM reset

Before the minions chime in, I have spent a few days searching this forum and have not been able to find an answer.

Does the ECM (engine control module) reset itself to factory specs if the battery is disconnected for a period of time? This has been my experience with most of the newer cars and trucks I have owned; and I'm curious if the same is true with my '18 SG. The reason I ask is because my winter storage procedure is to remove the battery and store it in the basement for the winter. I do this since my storage garage is non-insulated and the temps can drop to the negatives during Jan. & Feb. here.

I don't need a lengthy explanation, a simple yes or no will do. Thanks in advance and be safe.

Sep 28, 2020 | 02:43 PM

twincam10353

Road Master

Joined: Mar 2020

Posts: 1,078

Likes: 267

From: New England

I am really just winging it here, but I think only the basics are reset such as the clock, etc.

I am pretty sure your tune won't be reset if that's what you are getting at.

Sep 28, 2020 | 02:58 PM

brakeless

Seasoned HDF Member

Joined: May 2017

Posts: 5,915

Likes: 5,929

From: NorCal

I know my '04 doesn't reset to stock. It keeps it's custom SERT Tune.

Sep 28, 2020 | 03:00 PM

FLTRI17

Stellar HDF Member

Joined: Sep 2009

Posts: 2,114

Likes: 666

No, the ECM will not lose anything by being unplugged, except volatile memory stuff that gets relearned when powered up and possibly ridden for a few miles.
Bob