Rear Axle Replace on Rubicon for Flashing Locker Light

t1d3nio

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Just happened to me at 6k miles. Ordering a rear axle... seems insane
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Sputternutz

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I just had mine replaced and the tech did not swap the 4.88 gear from the old rear-end to the new one, thank God mine JL is a standard trans or I may not have noticed. A front-end at 4.88 and a rear-end at 4.10 don't play well with each other in 4WD.
 

OutlawBeard

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I just had mine replaced and the tech did not swap the 4.88 gear from the old rear-end to the new one, thank God mine JL is a standard trans or I may not have noticed. A front-end at 4.88 and a rear-end at 4.10 don't play well with each other in 4WD.
I'm shocked they replaced it after a gear swap
 

wolf

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I do not understand why the dealer is changing out complete Axel assembly’s for the locker problem. Oil does not conduct electrical current, moisture does. Jeepers that do a lot of water crossings etc. might be part of the problem.
The connections where the harness connects together (outside) needs to be disconnected and generous amounts of dialectical grease put on, around and in these connections. Also your wheel sensors that fail need the same thing. Heavy rain and driving causes moisture to eventually get in and causes replacement. Do this and most problems will be prevented. Dialectical grease is a lot cheaper than axel replacement.
use it on all electrical connections to include your battery terminals.You will be amazed what a little preventative maintenance will do. Don’t forget to get a can of computer compressed air and blow out all the moisture and clean the insides prior to reassembling.
 

chevymitchell

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I do not understand why the dealer is changing out complete Axel assembly’s for the locker problem. Oil does not conduct electrical current, moisture does. Jeepers that do a lot of water crossings etc. might be part of the problem.
The connections where the harness connects together (outside) needs to be disconnected and generous amounts of dialectical grease put on, around and in these connections. Also your wheel sensors that fail need the same thing. Heavy rain and driving causes moisture to eventually get in and causes replacement. Do this and most problems will be prevented. Dialectical grease is a lot cheaper than axel replacement.
use it on all electrical connections to include your battery terminals.You will be amazed what a little preventative maintenance will do. Don’t forget to get a can of computer compressed air and blow out all the moisture and clean the insides prior to reassembling.
Perfectly clean oil is a poor conductor.

Diff/Gear Oil laden with micro metallic flake is very conductive.

There are two connections. One on the outside with a near identical connector on the inside. Dielectric grease is designed as a moisture barrier, as you have mentioned. It's not going to prevent anything on the inside of the differential. It will simply breakdown.

Pot your sensors before it's too late. The write-up is a sticky in the axle section, if you haven't done this already.
 

mgroeger

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I do not understand why the dealer is changing out complete Axel assembly’s for the locker problem. Oil does not conduct electrical current, moisture does. Jeepers that do a lot of water crossings etc. might be part of the problem.
The connections where the harness connects together (outside) needs to be disconnected and generous amounts of dialectical grease put on, around and in these connections. Also your wheel sensors that fail need the same thing. Heavy rain and driving causes moisture to eventually get in and causes replacement. Do this and most problems will be prevented. Dialectical grease is a lot cheaper than axel replacement.
use it on all electrical connections to include your battery terminals.You will be amazed what a little preventative maintenance will do. Don’t forget to get a can of computer compressed air and blow out all the moisture and clean the insides prior to reassembling.
Read the entire thread and the other ones out there on the forum. Many of us have documented in great detail what is going on from personal experience and diagnostics and it has ZERO to do with water or moisture and EVERYTHING to do with oil getting into the sensor itself and causing the sensor to fail. The oil has very fine metal particulate in it from normal wearing of the gears and that is what is shorting out the sensor.

The axles are being replaced on Jeep and Dana's dime for reasons none of us can find out other than Jeep is being lazy and pushing it onto Dana.
 

mwilk012

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Read the entire thread and the other ones out there on the forum. Many of us have documented in great detail what is going on from personal experience and diagnostics and it has ZERO to do with water or moisture and EVERYTHING to do with oil getting into the sensor itself and causing the sensor to fail. The oil has very fine metal particulate in it from normal wearing of the gears and that is what is shorting out the sensor.

The axles are being replaced on Jeep and Dana's dime for reasons none of us can find out other than Jeep is being lazy and pushing it onto Dana.
They send the core back and repair it, and resell it. It's pretty straightforward.
 

mgroeger

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They send the core back and repair it, and resell it. It's pretty straightforward.
It's pretty stupid is what it is. The labor, shipping, etc... is stupid considering it's a 30 min job to replace the sensor.
 

mwilk012

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It's pretty stupid is what it is. The labor, shipping, etc... is stupid considering it's a 30 min job to replace the sensor.
A bean counter somewhere decided that the disruption to the supply chain from selling the individual sensor was worse than sending the whole axle back to be rebuilt. We will never have enough info to know if they were right.
 

FreedomFur

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So i have a 2022 Rubi on the way and am anticipating dealing with the same issues as everyone else. I have a tazer I will unmarry from my 2021 Willys and carry over.

What are people doing once the Jeep is out of the warranty period? Can we just wire to dedicated aux switch panels the same way someone would if they were throwing Rubi axles on a Sport? Use the Tazer to override any error codes?
 

mgroeger

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So i have a 2022 Rubi on the way and am anticipating dealing with the same issues as everyone else. I have a tazer I will unmarry from my 2021 Willys and carry over.

What are people doing once the Jeep is out of the warranty period? Can we just wire to dedicated aux switch panels the same way someone would if they were throwing Rubi axles on a Sport? Use the Tazer to override any error codes?
That's one option and the other is to buy the Z Automotive harness.
 

FreedomFur

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That's one option and the other is to buy the Z Automotive harness.
i cant believe the fix is that easy, especially if it isnt the locker going bad. Did they just over engineer this for “safety” so that it is idiot proof and people can’t throw a locker on when on the highway?
 

mgroeger

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i cant believe the fix is that easy, especially if it isnt the locker going bad. Did they just over engineer this for “safety” so that it is idiot proof and people can’t throw a locker on when on the highway?
The sensor that is going bad is the one that reads the state of the locker not the one that actually engages it.
 
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