Rear Wheel Bearing Replacement

Discussion in 'Gen 2 Prius Care, Maintenance and Troubleshooting' started by silverone, Aug 19, 2013.

  1. silverone

    silverone Member

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    Need to replace at least one rear wheel bearing, but still not positive which side. Getting a whump whump whump and slight howl at speed that seems to be worse going around right turns, so will change the drivers side first.

    The process looks pretty simple as long as the Prius is as similar to Corolla/Vibes of the same years.

    Can anyone verify that there is no regenerative braking on the rear and no need to disconnect the 12v battery? Does the trailing arm tube get in the way of removing the bottom bolts? Any other pointers for the job?

    Thanks!
     
  2. frodoz737

    frodoz737 Top Wrench

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  3. Patrick Wong

    Patrick Wong DIY Enthusiast

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    There is no regen braking on the rear wheels. However I suggest you disconnect the 12V battery before you start work on the car to make sure you don't have a problem with the skid control ECU logging a DTC while you are working on the rear wheels, having to suspend the drum brake plate assembly while you are replacing the axle hub and bearing, etc.

    Tightening torque on the four bolts that hold the axle hub/bearing is 45 ft.-lb.
     
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  4. silverone

    silverone Member

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    Thank you both for the link and information. I had to go out and verify again that I had rear drums! The NHW20 manual is Euro-Spec so it refers to only rear disk brakes, but I'm sure it'll come in handy for other things!

    It did say that if I'm not doing anything requiring a brake bleed that I may be okay waiting 2 minutes after the last time the Power button is pressed to begin work - I assume due to the Skid Control ECU. Will disconnect battery anyway - just hate to reset everything for windows, seat belts, and reverse...
     
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