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Support Thread for Speed Lock Override sold in the PC Shop

Discussion in 'Gen 3 Prius Accessories and Modifications' started by cproaudio, Oct 8, 2011.

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  1. Yes I want to bypass that damn speed lock.

    87.5%
  2. No, It'll be worst than texting while driving.

    1.2%
  3. No, but I still wanna see how it's done.

    10.4%
  4. I don't see a reason listed so I'll list mine own.

    0.9%
  1. TracyJ

    TracyJ Junior Member

    Joined:
    Jun 12, 2009
    39
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    Location:
    Atlanta, GA
    Vehicle:
    2010 Prius
    Model:
    IV
    I would love this! We are always wondering why the passenger can't be the operator. This solves our problem. Thank you!!!
     
  2. mosherk

    mosherk Junior Member

    Joined:
    Jul 29, 2009
    2
    0
    0
    Location:
    Albany, OR
    Vehicle:
    2010 Prius
    Model:
    III
    Looking forward to purchasing one for an early Christmas present to my car.
     
  3. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
    2,401
    760
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    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    I know I said that the bypass will be available by the end of 2011 but I've ran into some issues that I can not discuss here so they could be delayed til Jan 2012. They will be available soon because I've already invested a good chunk of my savings into this project. Sorry guys hope you understand.
     
  4. DonVentura

    DonVentura SoCal Prius Driver

    Joined:
    Sep 29, 2011
    78
    10
    0
    Location:
    Ventura, CA
    Vehicle:
    2010 Prius
    Model:
    IV
    I totally understand and I'm still sitting on the edge of my seat waiting for your new switch!
     
  5. intelliot

    intelliot Technology Evangelist

    Joined:
    Nov 29, 2011
    10
    0
    0
    Location:
    California
    Vehicle:
    2012 Prius v wagon
    Model:
    Three
    Has anyone tried to do this for a 2012 Prius v wagon?
     
  6. robby3

    robby3 Member

    Joined:
    Mar 25, 2011
    181
    24
    0
    Location:
    Switzerland
    Vehicle:
    2010 Prius
    Model:
    V
    In our 06 RAV4 it simply works to cut the speed signal wire. The NAV stops when loosing a GPS signal (i.e. tunnels) and movement on the screen is more jumpy, but it works. We are lucky as the newer Toyota/Lexus Nav in Europe do not have this lock anymore.

    What I dont understand is why the speed singal can't be cut at all on these units too? When starting up the HU the absence of the signal let the NAV unit running on GPS only. Has this been tried already? I have read a lot but what happens when the signal is absence during startup.
     
  7. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
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    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    Yes it has been tried, http://priuschat.com/forums/gen-iii...verride-speed-sensor-bypass-2.html#post937343 Initially, all the grayed out buttons become available. After 30 seconds or so, they gray out again. reconnecting the VSS wire will not reset the process for another 30 seconds or so. during this time, reconnecting and disconnecting the VSS wire will not get the buttons back. You have to wait until the HU establish the VSS for the bypass to work again. By building this circuit, you can flip the bypass switch on for as long as you need to. However I do not recommended leaving the switch on for a long period of time. The longest time I've left it on was about 20 minutes for testing. After which, cycling the switch off and on again re activates the bypass without any delays reported by jayvee. The circuit works like it should.

    I've started building the bypass. It's harder than I anticipated.
     
    1 person likes this.
  8. robby3

    robby3 Member

    Joined:
    Mar 25, 2011
    181
    24
    0
    Location:
    Switzerland
    Vehicle:
    2010 Prius
    Model:
    V
    Thanks for the clarification. What about the newest software version? We got the ability to switch off the lock with the 2010 version (on DVD based NAV units). Or is this something that Toyota never will provide for the US market due to prevent any law suits?
     
  9. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
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    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    Toyota discontinued the software override on the Prius since 2006 for the US market I believe. Many have tried to burn hybrid discs without success for the Gen II mid cycle refresh. Since software override was never part of Gen III Prius, it will never be possible to create software override DVD for it. Hardware bypass is the only method as far as I know.
    Be glad that you can override the speed lock via hidden menu. I wish the US market has that feature or else we wouldn't be dealing with this fiasco.
     
  10. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
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    760
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    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    Just got done installing the V1 in a volunteer's car. It didn't work at first because I forgot the plug the gray plug in. After that, it still didn't work because the bypass speed was too fast. I had to change the value of the resister. Once that's done it worked. I wasn't able to test the V3 because I didn't have time to change the value of of the R1 and R2 resistors. Thanks.
     
  11. Philatc

    Philatc Pushing Tin

    Joined:
    Sep 14, 2011
    137
    46
    21
    Location:
    Calfornia
    Vehicle:
    2010 Prius
    Model:
    V
    Has anyone tried to disable the nav lock out with the TechStream maintenance computer? I was reading some of the repair manuals for the 2010 Prius and noticed that it mentioned the ability to changed certain functions of the nav.
     
  12. soaristo

    soaristo Junior Member

    Joined:
    Sep 7, 2009
    15
    3
    0
    Location:
    CA
    Vehicle:
    Other Non-Hybrid
    Model:
    N/A
    Here you go~
     
  13. priusrick

    priusrick Member

    Joined:
    Sep 14, 2011
    257
    40
    14
    Location:
    Texas
    Vehicle:
    2011 Prius
    Model:
    Three
    Where are we on this?
     
    1 person likes this.
  14. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
    2,401
    760
    0
    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    plastic fab shop still making the blank panels inserts. They told me should be ready by Friday. I've been testing and experimenting different ways to get the override to work. So far the 555 timer is the only way. I've already made several bypasses but still waiting for the blank panels to be made.
     
  15. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
    2,401
    760
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    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    I've emailed Danny all the info. The bypass should be available in the Priuschat shop shortly.
     
  16. RaZa

    RaZa Member

    Joined:
    Nov 7, 2011
    480
    93
    0
    Location:
    Florida
    Vehicle:
    2012 Prius
    Model:
    Five
    removed
     
  17. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
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    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    The override, as it is, will reactivate all the grayed out buttons and functions as if you've stopped while the vehicle is in motion.. However, it will not allow DVD playback while driving. From what I've read on the forum, only the HDD navigation has DVD playback. The regular nav that uses DVD map does not have DVD playback function.
    The bypass I built for the PC shop is intended regular Prius because it is the only installation instruction I have but the pulse signal will work with all the Priuses if you can locate the vehicle speed sense wire for the navigation. I'm not able to locate pictures or videos on the back of the v's radio so I can't tell you where the VSS wire is. Knowing Toyota, it will be violet wire with a pink wire in the same plug or nearby.
    As for enabling DVD playback, I'll build an override that'll enable it if there's a demand for it.
    Keep in mind that I don't have access to OEM herness plugs so this bypass is not plug and play. You have to locate the correct VSS wire and parking brake wire (if I build an override with DVD playback) and cut it in order to install it.
     
  18. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
    2,401
    760
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    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    I have built an override that also has the switching for the parking brake wire. This will allow the DVD to display the video while driving. The override should work with the Prius v/ATP and Prius Five/ATP and PiP advanced. I've emailed Danny on the updates. It's been a week since I emailed him the first time. I don't know why it's not in the shop yet.
     
  19. RaZa

    RaZa Member

    Joined:
    Nov 7, 2011
    480
    93
    0
    Location:
    Florida
    Vehicle:
    2012 Prius
    Model:
    Five
    removed
     
  20. cproaudio

    cproaudio Speedlock Overrider

    Joined:
    Jul 7, 2010
    2,401
    760
    0
    Location:
    CA
    Vehicle:
    2010 Prius
    Model:
    V
    Unless you have a 7" screen on a 2012 v,PiP or HB, it won't play DVD. It seems that under 5mph and applying parking brake will let the DVD to display. That's what I did.
    On getting video input via reverse camera, it's doable but I won't do it because too many wire cutting involved. Besides, it'll still have that check surrounding warning at the bottom of the screen. I'll leave that up to the larger companies like Navtool and Prestigious Society to handle.