Making sense of TRAC, Auto LSD, ATRAC, VSC, & Rear Diff lock. - Page 13

**dbbd1** · 04-09-2008, 09:49 PM

Quote:

The_big_G previously said:

Thanks for this, very helpful

Stick around, there is a whole lot more too!

sc409 · 05-14-2008, 06:15 PM

I bought the upgrade for resale, that's why the dealers only order the upgrades as part of the "california" option. Great thread.

PhatFJ · 06-08-2008, 10:06 AM

OK guys here is my situation. I got my FJ a couple of months ago and have done a few mods to it (3" Toytec Adj. Coil over front, Toytec 3" rear, Micky Thompson 285/75/r16 MTZ=33", Lucrum winch mount, and Warn 9.5ti). I wanted to see how it would perform and hooked up with a few Rising Sun guys and hit Old Chinaman Gulch here in CO. Everything went great, had the rear locked and the FJ went through everything well with one exception (V-notch obstacle) and got to check out the wench performance which was great as well. After V-notch I decided to try unlocking the rear and use only the A-trac for a while so I disengaged the rear locker (indication went out), engaged the A-trac (indication came on) and continued on the trail. we came upon another rocky area and I proceed to go over this obstacle in A-trac only, when I got opposing corners off the ground at which time both opposing tires started to spin with apparently NO A-trac being applied to the wheels with traction, I then re-engaged the rear locker and went right over.
Has anyone else had this happen? Could the A-trac not have been engaged with apparent panel indication that it was? I have not had the chance to recreate the situation yet but hopefully will in the next few weeks, I might just take the FJ to the dealer and have them verify that the A-trac system is working properly.. If you have any suggestions what might have happened it would be greatly appreciated..
Thanks, PhatFJ

fjcruisin59 · 07-04-2008, 03:23 PM

hey fj cruisers,
i am new to this forum and to the fj cruiser, i have had one experience fj owner tiell me there is a bypass switch that you can install that will let you use your rear diff locked and the atrac working in the front at the same time????? true , false ??? any info would be appreciated. fjcruisin59

**dbbd1** · 07-04-2008, 08:48 PM

Quote:

fjcruisin59 previously said:

hey fj cruisers,
i am new to this forum and to the fj cruiser, i have had one experience fj owner tiell me there is a bypass switch that you can install that will let you use your rear diff locked and the atrac working in the front at the same time????? true , false ??? any info would be appreciated. fjcruisin59

Yup, do a search for rear locker mod and/or a-trac hack/mod, so on.

**stc_vmax** · 07-04-2008, 10:17 PM

You may already know this but, I found (from one of the trail team members) that if you touch your brake (AT model) or brake and or clutch peddle (MT model), your atrack will be disabled. You have to make sure your feet are off both of these while trying to use atrack. I felt silly when Woody from the trail team pointed this out while I was struggling up a pretty easy rock/dirt ledge.

Quote:

PhatFJ previously said:

OK guys here is my situation. I got my FJ a couple of months ago and have done a few mods to it (3" Toytec Adj. Coil over front, Toytec 3" rear, Micky Thompson 285/75/r16 MTZ=33", Lucrum winch mount, and Warn 9.5ti). I wanted to see how it would perform and hooked up with a few Rising Sun guys and hit Old Chinaman Gulch here in CO. Everything went great, had the rear locked and the FJ went through everything well with one exception (V-notch obstacle) and got to check out the wench performance which was great as well. After V-notch I decided to try unlocking the rear and use only the A-trac for a while so I disengaged the rear locker (indication went out), engaged the A-trac (indication came on) and continued on the trail. we came upon another rocky area and I proceed to go over this obstacle in A-trac only, when I got opposing corners off the ground at which time both opposing tires started to spin with apparently NO A-trac being applied to the wheels with traction, I then re-engaged the rear locker and went right over.
Has anyone else had this happen? Could the A-trac not have been engaged with apparent panel indication that it was? I have not had the chance to recreate the situation yet but hopefully will in the next few weeks, I might just take the FJ to the dealer and have them verify that the A-trac system is working properly.. If you have any suggestions what might have happened it would be greatly appreciated..
Thanks, PhatFJ