Error "SH-AWD Diff Temp High" popped up on screen

2007 ACURA RL

110,000 MILES • 3.5L • 6 CYL

FRITZ1REIKOZ

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I've got the vehicle listed above which i drive a bit. First, the ABS light came on every time i started the car and then i started noticing a new error of the center screen (Infotainment system). The error displayed as thus: "SH-AWD Diff Temp High". This error only shows up on the system after i have driven the car a bit. It doesn't come on with a start of the like most errors do. Any idea's on how to solve this issue? I can't seem to find much information about this online for this car specifically or any other as a matter of fact.

Oct 24, 2019 at 4:11 AM

KASEKENNY

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18,907 POSTS

Hi,

This could be a number of things. First off the light means that the differential is too hot in the rear. This is either caused by a faulty sensor and it is not actually too hot or it is too hot and it is disabling the system.

Due to this happening after you drive for a bit, I suspect it is getting hot. There is a clutch inside the rear end that gets applied and released depending on driving conditions. If this clutch is applied when it shouldn't because it is sticking or some other issue then the heat will build in the rear end causing this issue. Also, if the clutch is just slipping and not fully engaging when it should, it could cause this same issue.

I attached a lot of information to explain this system in more detail. However, I think the next step is to drive the vehicle with a scan tool hooked up and see what the temperature sensor is actually saying and see if there are any codes in the system. If there are that will give us more to go on.

Please let me know if you have questions or what you find with the codes. This could be as simple as needing to have the fluid changed or it could be more serious.

Images (Click to enlarge)

Oct 24, 2019 at 2:18 PM