Rear differential error

[biorobin1]

Hello i’ve been having this error come up randomly when driving. There’s a message that comes up on the screen that says that the rear axle differential lock is reduced and that i can continue driving but i need to take it to a dealership to get it looked at. So far the car still drives fine but i’m just worried about what it could be causing it because i only have around 6,000 miles. I was just wondering if anyone could explain what this means or just any help would be much appreciated!

Here’s a picture from another forum but it’s the same error i’m getting.

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[Escapist]

Rut roh

 

[toYoda]

Hello i’ve been having this error come up randomly when driving. There’s a message that comes up on the screen that says that the rear axle differential lock is reduced and that i can continue driving but i need to take it to a dealership to get it looked at. So far the car still drives fine but i’m just worried about what it could be causing it because i only have around 6,000 miles. I was just wondering if anyone could explain what this means or just any help would be much appreciated!

Here’s a picture from another forum but it’s the same error i’m getting.

Same issue here, car been at dealership 7 days total since malfunction appeared no fix yet.

 

[Dannyvandelft]

Check tire pressures. If one tire is substantially lower than the other, the diff might act up because of the difference in wheel speed.

 

[biorobin1]

Update: Took it to the dealer and got it looked at. The technician that looked at it found no leaks and the only minor issue was a battery cable being loose. At the time when the error came on, the driver rear tire was 33 and all the other tires was at 40. That night i put the missing air in the low tire and it hasn’t came on since . Also it turns out their was a nail in it and it was slowly leaking out air. In addition the tech said he had another supra there for the exact same issue, only he couldn’t get the error to go away.

 

[biorobin1]

Check tire pressures. If one tire is substantially lower than the other, the diff might act up because of the difference in wheel speed.

that might’ve been the problem

 

[chase]

Has anyone else run into this issue with correct tire pressures? This message just started appearing for me when my car hit about 100 miles on the odometer…

Edit: “Rear axle differential lock reduced” for SEO since I couldn’t find this thread from Google

 

[spta97]

Update: Took it to the dealer and got it looked at. The technician that looked at it found no leaks and the only minor issue was a battery cable being loose. At the time when the error came on, the driver rear tire was 33 and all the other tires was at 40. That night i put the missing air in the low tire and it hasn’t came on since . Also it turns out their was a nail in it and it was slowly leaking out air. In addition the tech said he had another supra there for the exact same issue, only he couldn’t get the error to go away.

Did you get a warning for the low tire pressure from the TPMS?

 

[chase]

Has anyone else run into this issue with correct tire pressures? This message just started appearing for me when my car hit about 100 miles on the odometer…

Edit: “Rear axle differential lock reduced” for SEO since I couldn’t find this thread from Google

Update, just got my car back from the shop (took 9 days). They replaced the differential lock/temperature computer (83294-WAA03), the differential lock actuator motor (41400-WAA01), and an o-ring (90118-WA286). After replacing all the parts, the transmission temperature read as 32,000 degrees Celsius and all the computers needed to be reprogrammed to get the faults cleared.

 

[zrk]

32,000 degrees Celsius

That's very hot.

All jokes aside, 32,000 (32,767, actually) is probably a 16bit integer over/underflow. And the sensor just wasn't reading, so it bugged out and overflowed.

 

[CaliSupraMBA]

Same issue any other feedback?

 

[FLtrackdays]

I just got the same thing today after getting a track alignment done... Someone mentioned to try this on another post:

https://www.supramkv.com/attachments/7849dcfe-aa19-4d62-a5ac-a2ac777e3d00-jpeg.39379/

So I'll give that a go.

 

[RWDriver89]

I just got the same thing today after getting a track alignment done... Someone mentioned to try this on another post:

https://www.supramkv.com/attachments/7849dcfe-aa19-4d62-a5ac-a2ac777e3d00-jpeg.39379/

So I'll give that a go.

Just got a track alignment today too; same code came up on the way home; did this RSR-sensor unplug trick work for you?

 

[FLtrackdays]

Just got a track alignment today too; same code came up on the way home; did this RSR-sensor unplug trick work for you?

Unfortunately, it didn’t. We did try. But… when my windshield got replace, the installer had the Toyota techstream software and reset it for me. It’s never been back since.

 

[kyle9]

Try SAS reset with ISTA

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