Locker Light in dash panel Lying

[gatorboy]

Locker Light blinks telling me that the lockers are locked. No so. I drive around in the dirt on a sharp turn with lockers locked and it tears up the dirt. I unlock the lockers and they unlock,no tearing up the dirt, but light blinks they’re locked. Now what ? Thnx for any ideas.

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[Hootbro]

If the light is blinking and not steady, you have a sensor disagree. The locker circuit is pretty simple. Power, ground for the solenoid to engage/disengage and a switch circuit to let the drivetrain control module know what is going on.

Attached is the locker circuit diagram. You can ignore the front locker part but the rear would be the same for your Mojave.

For most people, the rear locker sensor would need to be replaced but I would not make that call without verifying the signal circuit to the DTC module.

Edit: Also, the sensors changed with the 2023+ models with their own unique part numbers.

 

[Bandit’s Lair]

And after you do what Hootbro said ground your Jeep for 2 weeks with no ice cream for lying to you. That’ll teach it!!

 

[gatorboy]

And after you do what Hootbro said ground your Jeep for 2 weeks with no ice cream for lying to you. That’ll teach it!!

I did something just as bad. I made it sit in the parking lot while we ate lunch. It was sitting next to a 392.

 

[gatorboy]

If the light is blinking and not steady, you have a sensor disagree. The locker circuit is pretty simple. Power, ground for the solenoid to engage/disengage and a switch circuit to let the drivetrain control module know what is going on.

Attached is the locker circuit diagram. You can ignore the front locker part but the rear would be the same for your Mojave.

For most people, the rear locker sensor would need to be replaced but I would not make that call without verifying the signal circuit to the DTC module.

Edit: Also, the sensors changed with the 2023+ models with their own unique part numbers.

Thanks Hoot

If the light is blinking and not steady, you have a sensor disagree. The locker circuit is pretty simple. Power, ground for the solenoid to engage/disengage and a switch circuit to let the drivetrain control module know what is going on.

Attached is the locker circuit diagram. You can ignore the front locker part but the rear would be the same for your Mojave.

For most people, the rear locker sensor would need to be replaced but I would not make that call without verifying the signal circuit to the DTC module.

Edit: Also, the sensors changed with the 2023+ models with their own unique part numbers.

If the light is blinking and not steady, you have a sensor disagree. The locker circuit is pretty simple. Power, ground for the solenoid to engage/disengage and a switch circuit to let the drivetrain control module know what is going on.

Attached is the locker circuit diagram. You can ignore the front locker part but the rear would be the same for your Mojave.

For most people, the rear locker sensor would need to be replaced but I would not make that call without verifying the signal circuit to the DTC module.

Edit: Also, the sensors changed with the 2023+ models with their own unique part numbers.

Thanks Hootbro. I think you’re right. I did get a
“Service Axle Locker” message one time. I’m not familiar enough to try to fix. I’ll leave that for somebody that knows what they’re doing.
thnx again

 

[GrubbyBaja]

57,000 miles on my '20 JTR. Had my rear locker light start flashing intermittently a couple weeks ago while pulling a 2,500 lb uhaul trailer. It then stayed off for a few days, but came on again during a 150 mile road trip. Ordered the locker sensor replacement part# 68544629AA which included 5 separately labeled sensors. I was due for differential lube replacement anyway. I tried all 5 sensors and they all extinguished the errant locker light so I went ahead and left #1 installed. Simple job to drain fluid, pull differential cover, remove/reinstall new sensor, reinstall cover and refill with new lube. Fixed my rear locker errant light. BTW, I could see oil in my old sensor when I removed it. Tried drilling holes in the cover, cleaning out the oil with brake cleaner and sealing with silicone...didn't work.

 

[Jaxmax]

57,000 miles on my '20 JTR. Had my rear locker light start flashing intermittently a couple weeks ago while pulling a 2,500 lb uhaul trailer. It then stayed off for a few days, but came on again during a 150 mile road trip. Ordered the locker sensor replacement part# 68544629AA which included 5 separately labeled sensors. I was due for differential lube replacement anyway. I tried all 5 sensors and they all extinguished the errant locker light so I went ahead and left #1 installed. Simple job to drain fluid, pull differential cover, remove/reinstall new sensor, reinstall cover and refill with new lube. Fixed my rear locker errant light. BTW, I could see oil in my old sensor when I removed it. Tried drilling holes in the cover, cleaning out the oil with brake cleaner and sealing with silicone...didn't work.

Grubby was the new sensor potted ?…Jack

 

[JTGuy]

I just did the Tazer locker dongle fix. Quick and easy.

 

[GrubbyBaja]

Grubby was the new sensor potted ?…Jack

It looks identical to the one I removed - opaque top. I did add dielectric grease to the connector to try and keep lube out of this unit. Hopefully the wire entrance into the sensor is constructed differently than the original...we'll see.

 

[GrubbyBaja]

I just did the Tazer locker dongle fix. Quick and easy.

I almost went that route but the OEM sensor was about $30 cheaper...for 5...and I was opening up the differential for cleaning/inspection anyway. It also appears the other 4 sensors that came in the box will also work with my JT. So that works out to about $30 per sensor. Still makes me wonder how each of the 5 units cleared the locker light, but only 1 of them was supposed to be compatible .

 

[JTGuy]

I didn't want to mess with opening the diff and the Tazer was a simple fix. The $$ difference was not a big issue.

 

[gatorboy]

I didn't want to mess with opening the diff and the Tazer was a simple fix. The $$ difference was not a big issue.

Didn’t think about that,I have a Tazer in mine.
Does it just override it or cancel it,stop it from blinking or what?

 

[GrubbyBaja]

Didn’t think about that,I have a Tazer in mine.
Does it just override it or cancel it,stop it from blinking or what?

It's not the actual "Tazer" we're talking about, it's a different device made by Tazer...the Z-Locker Controller. Not sure how it works, but it would have to bypass the failed sensor and use programming to report back the correct signal to the drivetrain control module.

 

[Rusty PW]

57,000 miles on my '20 JTR. Had my rear locker light start flashing intermittently a couple weeks ago while pulling a 2,500 lb uhaul trailer. It then stayed off for a few days, but came on again during a 150 mile road trip. Ordered the locker sensor replacement part# 68544629AA which included 5 separately labeled sensors. I was due for differential lube replacement anyway. I tried all 5 sensors and they all extinguished the errant locker light so I went ahead and left #1 installed. Simple job to drain fluid, pull differential cover, remove/reinstall new sensor, reinstall cover and refill with new lube. Fixed my rear locker errant light. BTW, I could see oil in my old sensor when I removed it. Tried drilling holes in the cover, cleaning out the oil with brake cleaner and sealing with silicone...didn't work.

If the sensor has oil in it and it's showing a fault. The sensor is toast. Spraying the inside with brake cleaner or whatever won't help it.

If it has some oil in it and not throwing a fault. Yes the brake cleaner will help.

 

[gatorboy]

It's not the actual "Tazer" we're talking about, it's a different device made by Tazer...the Z-Locker Controller. Not sure how it works, but it would have to bypass the failed sensor and use programming to report back the correct signal to the drivetrain control module.

Ok. The lockers, lock and unlock 2wd, 4H, 4L
it’s just saying it’s locked. I’m gonna look at the Tazer codes and see what it shows. If that doesn’t work, I’ll take it to my 4wd shop and let them have at it. No dealers please!!!!!

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