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Old 07-26-2016, 10:44 PM
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Exclamation Hey Guys, Help a brother out-- axle leak/dealer problem . . .

I'll try to make this as short as possible-- here goes:

I have a 2016 JKU Willys Edition with @18000 miles. AT with 3.73 gears.

I have a well respected local shop and I trust the owner/mechanic completely. I'll not disclose the name because I feel like he has nothing to do with the issue at hand, but suffice it to say - He is known as the Go To shop in my city and he's incredibly professional and detail oriented.

When I first got the Jeep, he he installed a MetalCloak lift and aftermarket differential covers. He has since installed dual ARB compressor, MetalCloak front bumper, and some other stuff. All of it flawless and done in accordance with best practice.

When he installed the bumper, he pointed out to me a very slight sign of a leak on the front right side of the axle- down next to where the wheel joins the axle. He suggested that I show it to the dealer and get them to replace the axle seals. He indicated that he has seen this before on older higher mileage jeeps and some of the newer ones. He also indicated that the dealer might try to say the residue/leak was due to him adding the aftermarket differential covers and that he overfilled them.

Now- I took the jeep to the dealer, pointed out the issue and they didnt try to fight me on the issue (read on here that some dealers will try to blame it on larger/heaver wheels etc. but I'm running light 33" x 16" wheels and rubber.)

They ordered the parts and I dropped it off this morning.

When I picked it up, I asked them what might have caused it. To be fair, I talked to the service writer not the actual mechanic. He stated that it was likely caused by due to them being overfilled(higher pressure) and thats what caused the problem. He said the mechanic told him that it WAS overfilled. He stated that the mechanic completed the repair and put 2.7 pints back in. I asked them if it was overfilled, how much did they drain-- he said they didn't know. He continued to say that issue was resolved and I was good to go.

As soon as I exited the service bay, the jeep felt a little "funny" and I noticed the ABS and Traction control light were on and didn't go off.

Back in the bay I went, the actual mechanics were gone, but the service writer knew enough about checking codes etc. He made some adjustments and the lights went out.

I drove out of the lot and within moments, both lights came back on. We repeated the process. Same results.

He fiddled around down by the tire and said that he though there was an issue with the ABS sensor based on the codes and he would order a replacement and have it in within a couple of days. He also said that the ABS and traction control would not function until that part was replaced. He also said I could drive it with no problem.

I drove back to the office exited the Jeep and went inside to finish work. When I came back out, I started the Jeep , the warning lights were still there (ABS and Traction) but when I pulled out of the parking spot the Jeep hesitated. I have used hill descent a couple of times in 4LOW and it kind of felt like that- like the brakes were very rapidly being applied (almost dragging on the wheels.) It did that for a couple of seconds and then drove normally. So thats where we are, when starting the vehicle the initial first attempts at driving forward almost feel like brake grinding/pumping, almost to the point of the descent control feeling. I also did notice the descent control light blink on and off a couple of times-- then go off. That's not even supposed to be active unless 4Low !?!? right!?!?!?

Ok to drive until the parts come in and the repair is complete? Thoughts on the fluid level thing ? Something Else?

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Old 07-27-2016, 12:22 AM   #2
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When you shut it off and restart, the ESP/BAS reset, read the sensors. 'Sees' missing one as a not in sync wheel travel. Thinks you are in a turn when you are not. does it safey engagement and applies the brakes. Then goes null once you are made aware.

It will do this every restart until the sensor is replaced.

Bob

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Old 07-27-2016, 12:30 AM   #3
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The axle leak is common. My dealer would replacethe seal under warranty - but I was getting all new axle shafts the next week anyhow at my Offroad shop so told them not to touch it. My rig is very not stock (37 inch tires) and they still were going to cover the seal.

Have your shop check the axle shafts just to make sure they aren't bent.
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Old 07-27-2016, 12:32 AM
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Quote:
Originally Posted by nwbronco View Post
When you shut it off and restart, the ESP/BAS reset, read the sensors. 'Sees' missing one as a not in sync wheel travel. Thinks you are in a turn when you are not. does it safey engagement and applies the brakes. Then goes null once you are made aware.

It will do this every restart until the sensor is replaced.

Bob
Think we'really onto something here....found a couple of other buries posts almost identical. It'll be under warranty, but this issue was non existent until the dealer replaced completed the warranty repair on the leaky axle seal today....thoughts?
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Old 07-27-2016, 12:35 AM
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Quote:
Originally Posted by tbird911 View Post
Think we'really onto something here....found a couple of other buries posts almost identical. It'll be under warranty, but this issue was non existent until the dealer replaced completed the warranty repair on the leaky axle seal today....thoughts?
I'm thinking the mechanic may have damaged it, not connected it correctly or at all, gotten it dirty or gotten it gunned up when completing the seal replacement...
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Old 07-27-2016, 12:45 AM   #6
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Tbird911 is probably right, as those sensors look pretty delicate. Your shop probably did overfill the diff, as a lot of these aftermarket covers advertise "higher capacity". All they seem to do is raise the fill plug, though, which is an invitation for the seals to leak if filled to that level. That "extra capacity" seems to just be a marketing gimmick, though, is it solves a problem no one has. Your dealer did the right thing by filling the diff to its stock capacity.

Mark
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Old 07-28-2016, 06:33 PM
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UPDATE!

After wheel speed sensor was replaced all lights are off and Jeep drives/functions as normal ! Hurray! . . .almost

About half-way home on the interstate, I hear (over the road noise in a soft-top at highway speed) while driving straight down the interstate, what sounded like a light rubbing coming from somewhere under the front of the Jeep. It sounds almost like the pads were rubbing in a spot as one of the wheels turned-- sort if in a cyclic fashion.

It only lasted for a couple of minutes. I didn't really feel like the brakes were being applied, it was grinding , just generating some noise. There were no indications of any sort-- just heard it. In the neighborhood I put the Jeep through some turns and stuff and the noise would seem to happen sporadically from a stop and the disappear or when turning sharply . . .

I popped the driver side door and listened and couldnt tell if it was coming from a particular side or not-- and it's a "light" sounding rub like something on aluminum. After a couple of spins around the neighborhood- I stopped being able to reproduce it.

Thoughts? Is there some sort of self-adjustment period after a wheel sensor replacement-- like an ABS/electronic re-calibration or something?

Also, do I need to reflash with my AEV flasher to adjust for my larger tires?

Thanks in advance
Dave

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