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Old 02-03-2019, 07:26 AM
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Never get the Trac-Lok option

I suggest you never buy the Trac-Lok option if you intend to make serious use of your JK off road, especially in deep sand or mud. My JK runs 7 days a week for 7 miles through extremely deep (18" to 24") of Florida sugar sand and mud in the rainy season.

THEY WEAR OUT AND FAST. When the clutch pack wears out it tends to drop one or more pins into the gears.

The clutch pack on my 2014 let go at 74000 miles just 22 days before the end of my 5year/100000 mile power train warranty.

Jeep replaced the clutch pack, pinion gear, both wheel bearings and all the seals and thrust washers. Nearly everything but the main gear and the carrier housing under warranty.

I was told 50k to 75k is about the life of the Trac-Lok clutch pack if it is seriously used in 4 wheel drive in soft ground where there is a lot of wheel spinning.

Also I get about 25k on the rear brakes. I am on my third set set of pads and second pair of rotors at 74,052 miles.

So if you start hearing a noise in the rear end and you have Trac-Lok get it looked at before it drops pins. Mine forwarned me with a clunking noise about two months before it let go.

On the bright side it was warranty covered completely.

Thanks Jeep.

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Old 02-03-2019, 08:38 AM   #2
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Don't have anything to say about the Track-Loc, but the brake pad wearmay be caused by the ESC/Traction control trying to help you out. It looks for wheel spin and gently applies the brake to that wheel to send power to the other. There is an easy hack to turn it off completely.

Under the center console there is the dynamic sensor. It has a purple wire with a blue tracer that supplies power to it. You can splice into this wire and add a switch. When turned off, the ESC/Traction control is completely disabled. To enable it again, turn the switch on and restart the Jeep. I did this about a year ago and love it. No more trying to accelerate with the brakes being applied when driving in beach sand. Many YouTube videos.

https://www.wranglerforum.com/f202/tr...l#post32249081

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Old 02-03-2019, 09:10 AM   #3
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Indeed, Trac-Loc is clutch actuated, Detroit TruTrac isn’t.

I always preferred buying Wranglers without Trac-Loc and then getting a TruTrac added later. They last forever.
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Old 02-03-2019, 09:20 AM   #4
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Is trac loc the LSD that willys come with? My 2018 Willys also came with the optional rear locker. I suppose if mine wears out it should be covered by the drive train warranty and then the maxcare lifetime service contract.

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Old 02-03-2019, 10:18 AM   #5
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I ended up buying a Yukon Gear LSD for my 2012 Sport RHD which only had a standard open diff. Very impressed with it. Drilled to accept both ring gear bolt sizes.
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Old 02-03-2019, 10:27 AM   #6
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I always thought that ring and pinion gears were replaced as a set? So you have a used ring on a new pinion?
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Old 02-03-2019, 10:40 AM   #7
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I always thought that ring and pinion gears were replaced as a set? So you have a used ring on a new pinion?
Exactly my thought. Something odd about that ...
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Old 02-03-2019, 11:38 AM
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The brake pads go away because that is how the BLD works.



Yes I always shut off all the stability control. I will not work in sand if you don't shut down both of the ESC controls.


My bad, they replaced everything but the axles themselves and the carrier housing. So a new rear.
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Old 02-03-2019, 11:43 AM
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There were about 20 items on the invoice at N/C, no charge. Gears, seals, thrust washers, bearings, etc. All I really cared about was the N/C.
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Old 02-03-2019, 12:14 PM   #10
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Is trac loc the LSD that willys come with? My 2018 Willys also came with the optional rear locker. I suppose if mine wears out it should be covered by the drive train warranty and then the maxcare lifetime service contract.
JK's have either a locker OR the LSD, not both.
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Old 02-03-2019, 12:28 PM   #11
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Originally Posted by Dr Obbins View Post
Don't have anything to say about the Track-Loc, but the brake pad wearmay be caused by the ESC/Traction control trying to help you out. It looks for wheel spin and gently applies the brake to that wheel to send power to the other. There is an easy hack to turn it off completely.

Under the center console there is the dynamic sensor. It has a purple wire with a blue tracer that supplies power to it. You can splice into this wire and add a switch. When turned off, the ESC/Traction control is completely disabled. To enable it again, turn the switch on and restart the Jeep. I did this about a year ago and love it. No more trying to accelerate with the brakes being applied when driving in beach sand. Many YouTube videos.

https://www.wranglerforum.com/f202/tr...l#post32249081
Adding this switch is one of the first things we did. We hit that switch the moment our tires touch dirt. Don't think that because you can hit the stock button in your Jeep to turn off the traction control, that you are actually turning it off. The computer will nanny you and turn it back on automatically if it defects slip. Adding an aftermarket switch bypasses that completely. It's cheap and easy. Get it done.

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Old 02-03-2019, 12:45 PM   #12
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I don’t think the indignity is justified. The OP got 74,000 miles out of the LSD driving in what by his own description are unusual and extreme conditions. That seems decent to me, particularly given that an LSD can be expected to wear out by 100k miles in normal driving conditions. It’s like a guy saying people should “never get” a manual transmission because his clutch wore out from tough use. Good grief.
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Old 02-03-2019, 12:51 PM   #13
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Adding this switch is one of the first things we did. We hit that switch the moment our tires touch dirt. Don't think that because you can hit the stock button in your Jeep to turn off the traction control, that you are actually turning it off. The computer will nanny you and turn it back on automatically if it defects slip. Adding an aftermarket switch bypasses that completely. It's cheap and easy. Get it done.

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dont forget, that when you turn off everything, you also lose the BLD feature. if you have lockers, then its not an issue, but with tru-trac's, BLD will help out big time!
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Old 02-03-2019, 12:55 PM   #14
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JK's have either a locker OR the LSD, not both.
Only the rear locker is optional on 2018 willys. Pretty sure the front is standard with whatever they all come with.

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Old 02-03-2019, 12:59 PM   #15
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FWIIW, When I re-geared I was going and an e-locker in the front and keep my factory LSD in the rear. When they my shop pulled appart the rear at about 20,000 miles they found the the spider gears were chipped up. I had no idea as they were quiet as new. They offered to throw it together so I could take it to the dealer to be covered under warranty. After some research I found the I was not the only one with chipped spiders with factory LSD and low miles. I opted to just go with a TT in the rear and be done.
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Old 02-03-2019, 02:25 PM   #16
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Only the rear locker is optional on 2018 willys.
If you have a rear locker, you do not have the limited slip.
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Old 02-03-2019, 02:52 PM   #17
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People in the forum report that component dying under 30K pretty often; If you want that style locker, I'd go with nothing from the factory and add the Detroit.

I've always been a big fan of an LSD, but not this one.

I do agree that getting 75K out of it and then losing it doesn't seem crazy to me... but my expectations have been set low based on the numerous threads on the topic.
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Old 02-03-2019, 03:28 PM   #18
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Most Jeeps will never leave pavement, so Trac-Lok works just fine for those people. Serious off-roaders will either have a Sport with some type of aftermarket lockers or a Rubicon.
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Old 02-03-2019, 07:43 PM   #19
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My factory TracLok went about 200,000klm before I did a gear swap and changed it out for a TruTrac... never an issue.
As for the BLD and rear pads. We have the same issue here with snow. The BLD trying to do its job in snow tends to wear out rear pads really fast.


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Old 02-04-2019, 09:04 AM   #20
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Is trac loc the LSD that willys come with? My 2018 Willys also came with the optional rear locker. I suppose if mine wears out it should be covered by the drive train warranty and then the maxcare lifetime service contract.

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Your optional locker is called Tru-Lok. Jeep could've made it easier by not giving them similar sounding names.
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Old 02-04-2019, 10:05 AM   #21
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I could be wrong but I still feel mine working at 45,000 miles (dead stop start in 2wd in snow and slush). I my plan is to have the dealership replace the differential fluid at ~55,000 miles and inspect the clutch pads. I am hoping they replace them under warranty. Hopefully that will get me another 30,000 miles or so and then I will replace it with a Detroit.
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Old 02-04-2019, 12:00 PM   #22
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I added a Yukon LSD in the rear and like it. I hope I get 75,000 miles out of it that would be awesome. I was going to go with the true track but I didn’t want to have to drill out the holes for the ringgear
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Old 02-04-2019, 12:34 PM   #23
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I don’t think the indignity is justified. The OP got 74,000 miles out of the LSD driving in what by his own description are unusual and extreme conditions. That seems decent to me, particularly given that an LSD can be expected to wear out by 100k miles in normal driving conditions. It’s like a guy saying people should “never get” a manual transmission because his clutch wore out from tough use. Good grief.

And got a fully rebuilt rear, under warranty. So most likely will be good for another 60-70k, or not even know, as it may be traded off in it’s old age.
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Old 02-04-2019, 12:43 PM   #24
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Your optional locker is called Tru-Lok. Jeep could've made it easier by not giving them similar sounding names.

In Canada The TruLok locker is not an option on the Willys.. the TracLok is standard..
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Old 02-04-2019, 07:20 PM   #25
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Your optional locker is called Tru-Lok. Jeep could've made it easier by not giving them similar sounding names.

In Canada The TruLok locker is not an option on the Willys.. the TracLok is standard..
I think it was only optional in 18. I didn't care one way or the other. That's the way mine was a the dealer.
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Old 02-04-2019, 07:39 PM   #26
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I think it was only optional in 18. I didn't care one way or the other. That's the way mine was a the dealer.


My 16 Backcountry has it and I think it was first available on the 14 Polar edition.


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Old 02-04-2019, 07:50 PM   #27
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My 16 Backcountry has it and I think it was first available on the 14 Polar edition.


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On the willys though I think it was only 18. Could be wrong though.

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Old 02-05-2019, 08:44 AM   #28
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Our 2016 Back Country came with it. We upgraded when we regeared at about 22,000 miles to a Truetrac limited slip.
It was an option on our Back Country as I recall, not standard equipment.
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Old 02-05-2019, 09:12 AM   #29
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Our 2016 Back Country came with it. We upgraded when we regeared at about 22,000 miles to a Truetrac limited slip.
It was an option on our Back Country as I recall, not standard equipment.
Yes, it was a $1,500 option.
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Old 02-05-2019, 09:20 AM   #30
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I just got my second LSD/rear rebuild under warranty. 60,000 mile intervals approximately. MaxCare was worth it for me.
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