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Discussion Starter · #1 ·
Hello, posting here on an issue with the AWD on mom’s 2016 HRV; Hope someone on the forum can give me a direction for next troubleshooting step.

It seems that the AWD has failed - the AWD indicator and the VSA (Vehicle Stability Assist) indicator lights are On and stay On. The only change now is that the VSA indicator blinks when the wheels start slipping on the slick, snowmaggedon’d roads.

The HRV Owner’s Guide mentions that the VSA indicator blinks when the VSA is On. So, even though the light itself remains solid after starting the ignition, it will blink when the wheels spin - this implies that the VSA still works. The blinking is encouraging, though I don’t understand why it remains On, and how, if in anyway, it relates to the AWD.

We took the car to the dealer and after inspection the mechanic concluded that the next troubleshooting step is to the replace the AWD Control Unit (Part #: 48310-54A-A51). With no guarantee from the dealer that this would solve the problem, and b/c it’s a $730 part, we decided to buy the part online for <$75 and see for ourselves. No luck - both lights remain On after replacing the part.

Actions already performed:
  • Checked all fuses in both interior and exterior boxes A & B and found no faults;
  • Filled all tire pressures to recommended levels;
  • Reset Tire Pressure Monitoring System (TPMS) and have driven the car for at least 30 minutes over 35+ MPH.
Again, any recommended next step will be much appreciated. Hoping to get mom’s AWD fixed because the snow is not going away.

- Thanks!
Mark
 

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2019 and 2020 HR-V EXs
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If your rear differential has overheated (from a large or long-time disparity in front VS rear axle speeds) you COULD need a new rear differential. :eek: The wet clutches inside could be shot now.

Has the diff fluid ever been replaced? Service interval on that is 15K miles, then every 30K miles afterwards.
Rear & front tires should be the same size, and rotated periodically. They should be replaced in sets of four.

I know there is an electrical connection on the diff for the clutch that energizes on takeoff, to aid traction. Don't know if the 2016 had the display on the dash that indicates how much power is going to the rear wheels, as our '19 and '20 do. But it's worth a shot to check any connection to the rear diff...unplug & plug the connector 3 times, to re-set the contacts. If that changes the display, some electrical connection cleaner ('De-Oxit") might be worth buying.
 

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Discussion Starter · #3 ·
Thanks for the response. We'll replace the differential fluid this weekend and will check out the electrical connections while we're under there.
 

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Discussion Starter · #4 ·
Replaced the diff fluid and everything seemed fine based on what we saw of the used fluid; Much of the same normal observations mentioned in this HRV forum post. I'm taking it to the dealer this week, with just 2 weeks left on the warranty, and hope they can find the culprit. Thanks everyone for your help!

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