AWD system malfunctioning

2019 TOYOTA HIGHLANDER
28,769 MILES • 3.5L • V6 • 4WD • AUTOMATIC
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ANDRIN ATEM
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Vin number: 5TDDZRBH8MS063087

Hi dear, please can you help me this puzzle, I can’t find the AWD and the abs on the gateway network when scanning this car. Also a message shows on dash AWD overheating 2nd engaged. Am going to attach an image below on the dash warning message.

Question is, is the abs and the AWD suppose to appear on the can bus network system, May I have blog diagram of modules on network system. So to figure out why my scanner scans all other modules except for ABS and AWD module.
Dec 30, 2025 at 6:51 AM
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STRAILER
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The modules might not be talking because of a burnt fuse or the module itself is out. Does it list the modules but not go into them? What kind of scanner do you have? Yes the AWD and ABS should show up in the scan.

This message does NOT always mean actual overheating, it often means:

“I can’t communicate with the module that controls AWD, so I’m disabling it.”

So I would turn all systems on and then check the fuses in both fuse panels. This guide can show you how.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If the fuses are good, chances are the ABS control module is out which is common on Toyotas. When you turn the key on (engine off) does the ABS waring light come on? Please go over this guide and get back to us.
Dec 30, 2025 at 10:12 AM
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ANDRIN ATEM
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Thank you I will do so and let you know Ken. I was expecting the abs to stay on days indicating fault, but it does not, only when the ignition is open then the light appears, but when the car is idling you won’t see the light as well no communication.
Dec 31, 2025 at 3:11 PM
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STRAILER
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Hi Andrin,

Yep, the module can be failing intermittently. Also, it can be a bad connection at the ABS module. With the scanner can you get any codes at all?
Jan 1, 2026 at 12:44 PM
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ANDRIN ATEM
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Not at all. No communication
Jan 1, 2026 at 1:57 PM
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STRAILER
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I would check the fuses and the ground to the ABS module and if they are good replace the the module. Here are the fuses you need to check and the grounds for the system as well. Check out the images (below). Let us know how it goes


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Jan 2, 2026 at 10:07 AM