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Old 01-17-2016, 10:31 AM
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If you don't plan on using the 4WD?

If you don't have any off road trips planned, or in my case not going to see any snow how often do u guys "exercise" the 4WD do keep it lubed up and in shape? Is doing so even necessary?

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Old 01-17-2016, 11:05 AM   #2
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No need. Everything is always turning anyway in 2 high, just disconnected inside transfer case.

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Old 01-17-2016, 11:37 AM
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No need. Everything is always turning anyway in 2 high, just disconnected inside transfer case.
Thank you sir. Would an electronic transfer case be any different? Something like they use on the Liberty or GC for example? Where you flip I switch to go into 4WD as opposed to having an actual shift and linkage?

I heard a few guys say its a good idea to "exercise" any 4WD system, but what you said makes a lot of sense for my Rubicon.
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Old 01-17-2016, 11:43 AM   #4
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With the electronic switch it doesn't hurt to switch it or exercise it a few times a year. Just helped a friend replace the switch in his F150. He says he hadn't used/exercised it in the past year. They can foul up and it won't hurt your drive train to use the 4wd system a few times a year.
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Old 01-17-2016, 11:46 AM   #5
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I recently had to deal with the electronic transfer case to help a brand-new Toyota 4Runner stuck in the snow in Central Oregon.

It had a flimsy rotary dial for 4-Hi and 4-Lo, and the diff lock was a tiny plastic button on the side of the dial. I found it confusingly detached and immensely frustrating not being able to know whether it was the wheels and the tires, or those mall-grade electronics that weren't doing their work.

With a mechanical lever you know when things engaged or not, and you can move on to the next item to try to gain traction.
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Old 01-17-2016, 02:56 PM
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With the electronic switch it doesn't hurt to switch it or exercise it a few times a year. Just helped a friend replace the switch in his F150. He says he hadn't used/exercised it in the past year. They can foul up and it won't hurt your drive train to use the 4wd system a few times a year.
That makes sense.
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Old 01-17-2016, 03:52 PM   #7
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Thank you sir. Would an electronic transfer case be any different? Something like they use on the Liberty or GC for example? Where you flip I switch to go into 4WD as opposed to having an actual shift and linkage?

I heard a few guys say its a good idea to "exercise" any 4WD system, but what you said makes a lot of sense for my Rubicon.
Yes, an electronic transfercase needs to be shifted every now and then to ensure the actuator hasnt failed. This is coming from someone who got stranded halfway down pikes peak in a Ford Explorer. Wasnt fun.
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Old 01-17-2016, 04:40 PM
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Well thanks for the replies. What I gather is mechanical shift activated 4WD doesn't need any exercise. Electronically activated 4WD does. That's easy enough to remember.
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Old 01-17-2016, 05:29 PM   #9
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I recently had to deal with the electronic transfer case to help a brand-new Toyota 4Runner stuck in the snow in Central Oregon. It had a flimsy rotary dial for 4-Hi and 4-Lo, and the diff lock was a tiny plastic button on the side of the dial. I found it confusingly detached and immensely frustrating not being able to know whether it was the wheels and the tires, or those mall-grade electronics that weren't doing their work. With a mechanical lever you know when things engaged or not, and you can move on to the next item to try to gain traction.
My mother drives a 4-runner, I agree. I don't think she's shifted that in years. I've been tempted to try it out but I'm scared to mess it up. She uses 4hi but never has used Lo
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Old 01-17-2016, 06:12 PM   #10
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Well thanks for the replies. What I gather is mechanical shift activated 4WD doesn't need any exercise. Electronically activated 4WD does. That's easy enough to remember.
Not using 4wd for long periods of time is bad for the soul.
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Old 01-18-2016, 07:22 AM
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Not using 4wd for long periods of time is bad for the soul.
That is a given. :-)
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Old 01-18-2016, 12:36 PM   #12
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That is a given. :-)
Whats up ADee1

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Old 01-18-2016, 12:40 PM   #13
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make sure you "exercise" diff locks in the rubicon model, my brother recently bought his 2012 with around 45,000 miles and the front diff lock would engage but not disengage. He made them fix it before he bought though.
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Old 01-18-2016, 01:37 PM
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make sure you "exercise" diff locks in the rubicon model, my brother recently bought his 2012 with around 45,000 miles and the front diff lock would engage but not disengage. He made them fix it before he bought though.

Good point, I haven't even checked mine out yet.
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Old 01-18-2016, 03:35 PM   #15
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Having owned two 4Runners and an FJ the owners manual say to engage 4WD at least 10miles a month.
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Old 01-18-2016, 07:22 PM   #16
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This is Wrangler forum. Don't care so much about other 4x4's.
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Old 01-18-2016, 08:14 PM   #17
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No need. Everything is always turning anyway in 2 high, just disconnected inside transfer case.
I could be proven wrong, but until I am I disagree with this. The hubs are not locked until you shift into 4X4. I believe they still use vacuum lines to do this. If 4X4 isn't used the grease on the shafts will harden over time and there may not be enough force to lock the hubs. I've had it happen on an older Jeep.

Maybe they have redesigned some things, maybe not. But it certainly doesn't hurt anything to run it in 4X4 for a few miles once a month or so. I shift both my Wrangler and Tacoma into 4X4 every time I get onto a gravel or unpaved road even though I don't need 4X4.
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Old 01-18-2016, 09:53 PM   #18
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I could be proven wrong, but until I am I disagree with this. The hubs are not locked until you shift into 4X4. I believe they still use vacuum lines to do this. If 4X4 isn't used the grease on the shafts will harden over time and there may not be enough force to lock the hubs. I've had it happen on an older Jeep.

Maybe they have redesigned some things, maybe not. But it certainly doesn't hurt anything to run it in 4X4 for a few miles once a month or so. I shift both my Wrangler and Tacoma into 4X4 every time I get onto a gravel or unpaved road even though I don't need 4X4.
Nope. The front and rear axles and driveshafts are directly connected to the wheels all the time. When you throw the 4x4 lever, you are locking the front driveshaft to the rear inside the transfer case. It's purely mechanical; there is no vacuum line.

Switching in and out of 4 wheel drive on the JK for no reason only serves to weaken the crappy bushings on the linkage.

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