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  #11  
Old 11-05-2021, 11:14 PM
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Transfer case codes I am getting

5F39 transfer case internal
4F7A signal faulty from transfer box
54C6 warn transfer case oil
5463 warn transfer case oil

I cannot get any of the codes to clear/reset.

Still getting all 3 lights.

Any ideas?
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  #12  
Old 11-05-2021, 11:32 PM
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Internal error usually means the clutch plates are worn. I had this on a client and had to replace his TC.


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  #13  
Old 11-06-2021, 12:35 PM
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Is there a way to test the actuator? The gear in it is new as of yesterday. It was ruined. I'm grasping at straws here. Is the TC rebuildable if it is shot? I would think the only wear part in it would be the clutches.

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  #14  
Old 11-07-2021, 08:14 AM
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Scanner like my foxwell will run the actuator.

On the one I had to replace the TC "just knew" it was shot. It had been driven with no oil so I just bought a used replacement TC.

When I opened it up the TC looked perfectly ok inside the front had not been used for months because the front drive shaft was removed after an accident. What was missed was the accident damaged the front output seal and let out the TC fluid.

The TC oil drained to the point what remained overheated.

I don't see why one couldn't replace the clutches, the magic wear sensors and the magic resistor but that last part is the tricky one: the TC has a factory set calibration resistor and no way a DIY is going to be able to get that sorted out.
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  #15  
Old 11-07-2021, 12:00 PM
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I'm wondering if the TC tried to force the clutches to engage the front axle because the rear CV axle was disconnected and then couldn't reset back to normal. The whole car acted like there was no driveshaft attached at either end. I'm thinking about trying to reset the TC with a Foxwell when it gets here and see if that will fix this issue first.

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  #16  
Old 11-07-2021, 12:30 PM
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You have codes for oil. If the sensors detect worn oil you can't reset. What's the situation with the oil?

I was hoping the internal error was related to the actuator in my car but that worked ok (and metal gear).
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  #17  
Old 11-07-2021, 12:42 PM
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Quote:
Originally Posted by andrewwynn View Post
You have codes for oil. If the sensors detect worn oil you can't reset. What's the situation with the oil?

I was hoping the internal error was related to the actuator in my car but that worked ok (and metal gear).
I'm going to change it and that'll give me an idea of it's condition.


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  #18  
Old 11-07-2021, 12:43 PM
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I know there aren't supposed to be coincidences but these all came up when the CV axle popped off and the car wouldn't move.

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Old 11-07-2021, 12:46 PM
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We had oil wear code but customer drove it with no oil. We first tried to fill and clear codes before having to replace the whole TC. It prob could have been refurbished I think the sensors got smoked (literally from smoking hot oil) I would start with clean oil and reset TC with the foxwell; it can be hard to find that submenu but it needs to be reset. Also do an auto scan to check all modules for errors.
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  #20  
Old 11-07-2021, 12:57 PM
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Quote:
Originally Posted by valleyviewlawns View Post
I know there aren't supposed to be coincidences but these all came up when the CV axle popped off and the car wouldn't move.

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I think your rationale of rear CV coming off allowing the rear output to spin: if the clutch in the TC doing its job you should get the car to move with the front axle so it's possible the front axle wasn't getting power for a long time just unnoticed until the rear axle stopped functioning.

I test on sand or snow occasionally to make sure all four corners will spin.

I don't remember how hard you or wife tired to get the car to move but I could see a case where TC would be made very unhappy.

That said, hopefully it won't come to replacement but it wasn't a difficult job when I had to replace and I found a warrantied used one for about $500 including shipping.
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