Vinniety Posted October 16, 2008 Share Posted October 16, 2008 so i decided to get all my paper work in a file to keep it organized and i noticed one paper that i got from the dealer that said a web site called mysubaru.com. Its a website that helps you keep track of maintenance and a bunch of other things. You have to register to get to all the information but it is a great site at least i think so. Anyway looking at some of the maintenance schedules and reading a few other things i came across this that i thought was interesting. Let me know what you guys think......... If your vehicle is AWD (All-Wheel Drive) with an automatic transmission and the temporary spare tire has been installed, put a spare fuse (15 amp) inside the FWD (Front-Wheel Drive) fuse holder (refer to your owner's manual for location). Confirm that the Front-Wheel Drive (FWD) warning light comes on before you drive the car. Installation of this fuse deactivates AWD to prevent possible damage to the drivetrain components that can result due to the use of the smaller temporary spare tire. After re-installing the conventional tire, remove the fuse from the FWD fuse holder to restore AWD operation. Link to comment Share on other sites More sharing options...
andrewjeff Posted October 16, 2008 Share Posted October 16, 2008 AWD requires all tires to be the same size and inflated to the same pressure. The spare tire is of smaller size, which would cause it to rotate at a faster velocity then the rest. The AWD system would attempt to correct this problem by redirecting power to the other tires. If you have a blow out SUBARU recommends you put the spare tire on the back, and disengage the AWD system by completing the FWD circuit. The circuit charges a solenoid that disengages the rear differential from the transmission. This procedure will prevent the over compensation from taking place, and allow the rear differential to operate independantly from the transmission. Other then that I don't really know if you have a more detatiled question. Are you having trouble with your AWD system? Link to comment Share on other sites More sharing options...
Reuben Posted October 16, 2008 Share Posted October 16, 2008 Thanks for that Andrewjefff. Also, don't drive for ever with the FWD fuse in, my JDM manual states no more than 30KM. I.e, to the nearest service station or tyre shop Oh and... Link to comment Share on other sites More sharing options...
exarus Posted October 16, 2008 Share Posted October 16, 2008 I assume we have to do the same for manual transmission cars? Link to comment Share on other sites More sharing options...
Vinniety Posted October 16, 2008 Author Share Posted October 16, 2008 AWD requires all tires to be the same size and inflated to the same pressure. The spare tire is of smaller size, which would cause it to rotate at a faster velocity then the rest. The AWD system would attempt to correct this problem by redirecting power to the other tires. If you have a blow out SUBARU recommends you put the spare tire on the back, and disengage the AWD system by completing the FWD circuit. The circuit charges a solenoid that disengages the rear differential from the transmission. This procedure will prevent the over compensation from taking place, and allow the rear differential to operate independantly from the transmission. Other then that I don't really know if you have a more detatiled question. Are you having trouble with your AWD system? im not having any issues just thought that would have been nice if the dealer told me that. And if subaru thought this was going to cause issues with the AWD why didnt they just make a full spare. Just my 2 cents. Anyway thanks Link to comment Share on other sites More sharing options...
Beanboy Posted October 16, 2008 Share Posted October 16, 2008 No fuse for manual cars ever, and no fuse for 05+ auto cars... Well, maybe before the NA ones, not sure. -B http://www.standardshift.com Link to comment Share on other sites More sharing options...
Golf4283 Posted October 16, 2008 Share Posted October 16, 2008 Hopefully i didn't screw up my car cuase I had a front flat in my '08 3.0R and used the spare for a few miles. No problems noted after getting a new set of tires. :shrug: Link to comment Share on other sites More sharing options...
Bdubs Posted October 16, 2008 Share Posted October 16, 2008 Going a short distance with mismatched tires is okay. You may run into problems down the line with the front or rear diff if the car is driven a very long distance, or consistently with a mismatched size of tire. Also, its a 55 mph donut, designed to be used to take you from A to B. It's not a friggin permanent replacement. I can't stand seeing people speeding by me at about 80 with one of those on. Link to comment Share on other sites More sharing options...
slow95suby Posted November 1, 2009 Share Posted November 1, 2009 what size fuse should be in a 95 legacy ls? that one is mission on the gf's car. Link to comment Share on other sites More sharing options...
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