Replacing the HSD

Discussion in 'Gen 2 Prius Main Forum' started by calsarah13, Apr 30, 2013.

  1. calsarah13

    calsarah13 Junior Member

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    Has anyone had to have Toyota replace their HSD? What were your car's symptoms?

    My mechanic told me the weird noise I'm experiencing when I accelerate (and only when I accelerate) is being caused by something in the hybrid engine.

    It's at Toyota of Downtown Oakland now.
     
  2. xpcman

    xpcman Senior Member

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    "It's at Toyota of Downtown Oakland now."

    I don't let them touch my Prius. Good luck - you will need it!
     
  3. bisco

    bisco cookie crumbler

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    something in the hybrid engine? seriously? you need help my friend. get thee to another dealer. are there any warning lites on? when did the noise start? how many miles on her? are you the original owner? let me start with this: when you go to the dealer, it's not 'your' mechanic, it's 'their' mechanic.;)
     
  4. calsarah13

    calsarah13 Junior Member

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    Actually, I went to "my" mechanic over the weekend to check out the noise and its source (and he did it for free...imagine that, dealers!). He's the one who told me to take it to the dealer because he says it's the hybrid. I'm in California, so my 2008 with 86k miles on it is still warrantied if its the hybrid. *crossing fingers its the hybrid*

    The noise started about two weeks ago and I think it's getting worse. A wah-wah-wah-wah noise that gets faster and faster until it turns into a drone or is covered up by road noise at around 50 mph. There are no warning lights on.

    Another "symptom" is that when I first start driving in the morning, it takes several miles (maybe 5-8) of freeway driving before my current MPG goes above about halfway between 0 and 20 MPGs. Even when I'm decelerating, braking, or going downhill. This started about a week ago.

    I'm not the original owner, but my mom was and I bought it from her when her lease expired. So I'm as good as the original owner.

    Yesterday, it was warm out and when I turned on the car, with the climate control turned to AUTO at 72 degrees, hot air was blowing out of the vents for the first few miles. Then the A/C finally kicked in.

    My poor lil car!
     
  5. calsarah13

    calsarah13 Junior Member

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    What was the bad experience that led to your boycott of this dealer?
     
  6. bisco

    bisco cookie crumbler

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    okay, sounds like you've got a handle on it. all the best at the dealer, please let us know what they say, those are some interesting symptoms!:)
     
  7. maestro8

    maestro8 Nouveau Member

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    This could also be a wheel bearing, but it's nigh impossible to diagnose a car over the Internet. Good luck...
     
  8. calsarah13

    calsarah13 Junior Member

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    That's what I thought at first, but the noise goes away when you're doing anything other than accelerating. If it were a wheelbearing, you'd hear the noise when you were braking or cruising.
     
  9. calsarah13

    calsarah13 Junior Member

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    I just got a call back. The technicians were able to reproduce the noise and isolate it to either somewhere inside the hybrid engine/motor housing (?) or inside the differential case...I guess they're close together? Please pardon my ignorance: I am only just starting to read up on how exactly my car works, what with the continuously variable tranny and all.

    (On a side note, my last car was a 1994 Land Rover Range Rover County LWB, which was constantly in the shop. I used to take home the old components and take them apart to see how they worked. I actually replaced the rear diff on that car after it started making such a hideous noise that I was afraid to drive it and had it towed 30 miles to the dealer. Ouch. That was a very different noise but also a very different car.)

    In any case, no one at Toyota of Downtown Oakland has ever encountered this noise or this problem, so they've put in a call to the regional specialist. The service rep I've been working with said that even if it turns out to be the differential and not the HSD, he thinks I have a good chance of getting it repaired by Toyota for free because I only just passed the five-year mark (although I'm well above 60k miles at 86k) and I'm effectively the original owner.
     
  10. richard schumacher

    richard schumacher shortbus driver

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    You're not very far from a truly great independent Prius mechanic, Luscious Garage at 475 9th St. in SF.
     
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