Rear Differential Temperature Warning Light Mean

A rear differential temperature warning light indicates the rear differential temperature is too high, or there is an issue with the measurement system.

If the Rear Differential Temperature Warning Light is on while the engine is running, it indicates that the oil in the rear differential is too hot. If you are driving, reduce vehicle speed and stop at the nearest safe place. Allow the differential to cool down and the light to turn off. The vehicle will then be safe to drive. Continued driving with this light illuminated can damage the rear differential and other parts of the powertrain.

If the light recurs, stop again and allow time again for the differential to cool down. If overheating continues to occur or if the light does not go out at all, call your dealer, service center or roadside service for assistance.


• If the tire pressures are not correct and/or the tires are not all the same size and brand, the rear differential will be heavily loaded when the vehicle is driven, resulting in an abnormally high oil temperature.

How to Fix Rear Differential Temperature Warning Light?

The best course of action is to let an expert mechanic diagnose the problem and repair your car. But if you have a good mechanical knowledge and you decide to try and fix the problem yourself, here are some steps to follow.

First start by checking your vehicle’s owner’s manual to see what the warning light means for your specific make and model. This will give you an idea of what might be wrong with your vehicle. Second you need to scan for OBD2 Trouble Code (DTC) using OBD2 scanner.  Then you can take your code to the internet to find the cause of your fault and how to fix it. Once you know what the problem is and how to fix, you can purchase the necessary replacement parts and install them. Once everything is fixed, it’s time to erase the codes. Plug your scanner back in and erase the trouble code. You might need to confirm the changes. We recommend rescanning the engine to be sure they are gone. You will also see the rear differential temperature warning light goes off.

If you can’t find the information you need online — or you don’t feel comfortable attempting repairs yourself—and the warning light on the car is still illuminated. We recommend getting to the service station to find out what the problem is or consider calling your local dealership for help.


The content contained in this article is for entertainment and informational purposes only and should not be used in lieu of seeking professional advice from a certified technician or expert mechanic. We encourage you to consult with a certified technician or mechanic if you have specific questions or concerns relating to any of the topics covered herein. Under no circumstances will we be liable for any loss or damage caused by your reliance on any content.

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