Skip to content
View in the app

A better way to browse. Learn more.

Ultimate Subaru Message Board

A full-screen app on your home screen with push notifications, badges and more.

To install this app on iOS and iPadOS
  1. Tap the Share icon in Safari
  2. Scroll the menu and tap Add to Home Screen.
  3. Tap Add in the top-right corner.
To install this app on Android
  1. Tap the 3-dot menu (⋮) in the top-right corner of the browser.
  2. Tap Add to Home screen or Install app.
  3. Confirm by tapping Install.

FWD Fuse questions

Featured Replies

Ok the first one, how does this fuse work?

 

Second, where is the rest of the wiring located.

 

Lastly, does anyone think it is possible to interupt that curcuit with a switch? (With the requisite wiring, of course).

How does the fuse work? Please PLEASE!!! search before you ask questions - this has been covered many times. In a nutshell, it forces the Duty C solenoid to not engage the clutches in the back of the tranny.

 

Where is the rest of the wiring? Well, the fuse just sends a signal to the TCU saying to engage FWD.

 

Interrupt with a switch? Why bother. The FWD fuse isn't supposed to be in except in situations where only ABSOLUTELY necessary. It doesn't gain any gas mileage or make less wear and tear on the tranny. If anything, it's WORSE to drive an AWD car in FWD mode just because you feel like it. You use the FWD fuse for testing, not for normal driving. If you want a FWD car, get a FWD transmission.

  • Author

Thank you, and sorry for the lack of search.

short explinanation

 

Fuse energizes the AWD solenoid to disable the AWD

 

Fuse bypasses the TCU in such a way that the TCU does not throw a code, but does turn on the fwd light.

 

NO its not that easy, as has been discussed here, you will throw a code almost every time. Also the reverse you will damage the AWD unit if its not done properly, its not just the matter of throwing in a switch.

 

 

Also if you want a 2wd car why buy a subaru? Disabling the AWD does nothing for gas mileage, and changes the handling to some degree, but defanitly changes the traction, as the awd is always adjusting the torque split.

If a switch is used because of torque bind, it wont work for long.

 

nipper

Please sign in to comment

You will be able to leave a comment after signing in

Sign In Now

Account

Navigation

Search

Search

Configure browser push notifications

Chrome (Android)
  1. Tap the lock icon next to the address bar.
  2. Tap Permissions → Notifications.
  3. Adjust your preference.
Chrome (Desktop)
  1. Click the padlock icon in the address bar.
  2. Select Site settings.
  3. Find Notifications and adjust your preference.