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Is it possible to install the factory GPS system on a 08?

Discussion in 'Gen II Prius Accessories & Modifications' started by pumpiniron, May 31, 2008.

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  1. pumpiniron

    pumpiniron New Member

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    I have a 2008 Toyota Prius Package #3. Mine didn't come with the factory navigation since it's a package 3 BUT it does have the MAP button on the steering wheel. When you press the button it says "The external system is not connected" on the main display.

    Now I've read that it's not possible to install the factory navigation on a Prius that didn't come with it but I am finding this very hard to believe as no one seems to have any substantial evidence. Not to mention when you press the MAP button on my wheel it obviously works since it says "The external system is not connected" on the main display. That means that obviously the map button works but the system is not there and not plugged in.

    Does anyone know if it is possible to buy the external system and make it work because so far the answers I have seen of people saying "no" have no evidence or facts to back their answers up.
  2. holy_crap

    holy_crap Junior Member

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    I don't see why you would want to. Compared to portable GPS systems like the Garmin and TomTom, the Toyota is horrible. Also, it will cost you upwards of $250 to update the software.
  3. pumpiniron

    pumpiniron New Member

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    Well I wanted a package #4 but the dealer had absolutely no Prius' in stock AT ALL except for 1 package #3 08. It was either that or a 3 month waiting list so I choose the #3. Anyhow the only reason I'm so determined about this is because I just want it to be integrated perfectly with the steering wheel and the car. Plus I'm sure it would up the resale value if I ever had to sell it.

    Does anyone know where the factory GPS unit (external system) is located on an 08 Prius? If I can find that out I'm pretty good with electronics so I'm going to dig around and see if there is a factory harness plug just sitting there. That's how it is on a lot of cars such as Subarus.
  4. lordbah

    lordbah Junior Member

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    Can you get a TomTom to put its video out to the MFD and accept touch screen input from it? I doubt it but it would be cool.
  5. Jack66

    Jack66 Kinda Jovial Member

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    I believe the GPS unit is located under the driver's seat on cars that have it.
  6. 9G-man

    9G-man Active Member

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    It's not nearly as simple as you seem to imagine it. And the cost would be Thousands.
    You'd need the dvd unit that fits under the drivers seat, the brackets and wiring harnessess to go along with it. The speed sensors, accelerometers, and antenna. New MFD with bezel and associated nav buttons. You'd need the JBL amp and sound system to process the audio. And everything associated with that. Forget it. Pkg 3...you got JBL, anyway...
    If you wanted factory nav you should have shopped around for the car you really wanted, and not settle for one that didn't have it.
    Buy a Garmin and be happy. It's much better.
    Plus a portable nav unit will allow you to look at the energy screen and nav info at the same time. Something you can't do with factory nav. And if getting the most MPG becomes your goal, you need that energy screen up.
  7. pumpiniron

    pumpiniron New Member

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    I didn't think I would need all that... My bad. A lot of cars like Subarus come with the factory harness' for options that did not come with the car so that you can easily upgrade later. I figured that the Prius might have had everything pre installed including the wiring harness and all I might have to do is install the external unit. Apparently it's not as easy as that so I think I will just have to go with something aftermarket. Oh well, wishful thinking right?
  8. la cucaracha

    la cucaracha New Member

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    I was told no to your same question from a dealer.
  9. pumpiniron

    pumpiniron New Member

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    The dealer told me no as well. However it IS possible because ANYTHING is possible the problem is that it would costs thousands of dollars and be much harder then just a plug and play scenario.
  10. problemchild

    problemchild New Member

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    Get a garmin. I find the factory nav system features just above useless. You cant get detail until 700ft level. I was on a mountain road and had to zoom to 700ft to make the road show up. You cant zoom out to get a global picture with out all roads magically disappearing. After using Garmin for 6 years the toyota nav system leaves you "wanting" something far better. Heck my pda is better then the toyota nav system.
  11. Joekc

    Joekc Member

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    Even if you could do this, you wouldn't be that happy with the NAV system. I have a Garmin Nuvi 360 in my Honda and it's much easier to use. I have it on a beanbag mount and put it the trunk when I don't need it. It calls out street names, which the Prius NAV unit can't do, except for interstates and some major highways.

    Further, at least where I live, the Prius NAV is not good in giving directions. Add to that an inability to program it while moving and deep layers of confusing menus and you've got a real mess.

    As cool as it might seem, it's not. Get a Garmin (or similar) and be happy.

    (note my signature, which I signed on with six months ago -- I've found no reason to change it)
  12. pumpiniron

    pumpiniron New Member

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    I wonder if it would be possible to integrate the Garmin with the factory MFD screen?
  13. Jack66

    Jack66 Kinda Jovial Member

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    Not really. It IS possible to send the video signal to the MFD but you wouldn't be able to use the touchscreen. Actually, you could still touch the touchscreen and the control unit would take it as input to something unrelated to the GPS. The GPS has to integrated with the IEBus to properly capture resources from the MFD. If you want in-dash navigation then you probably want to install a car pc which has software ready to accept touchscreen input from another touchscreen. There are nice touchscreens that fit into the map space below the radio and roll out automatically or manually.
  14. Porsche998

    Porsche998 New Member

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    With the comments on the Nav system - maybe you can find some one who will sell you the DVD system they have (under the drivers seat) real cheap along with the antenna - then it would be just a matter of wiring it up. It is nice to have an integrated system. I have been using Mapolis on my PDA but like the Prius system better. Have the system on my PDA is an old system and does not provide the 3 dim. maps that the newer systems provide. Good luck.
  15. Jack66

    Jack66 Kinda Jovial Member

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    I think it has been tried before without success. Does, the NAV system need the extra buttons next to the MFD or will the controller recognize the NAV system and send/receive the correct data to/from the MFD? I'm curious if the different packages have different controller chips. I'll be interested to see if Patrick Wong or Galaxee knows the answer to whether different controller chips are required.
  16. pumpiniron

    pumpiniron New Member

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    Well Garmin does make something that will allow you to run their GPS through the MFD screen. Now it won't be touch screen or integrated with the steering wheel button but it will still do GPS through the MFD screen on just about any car! It's $600 but with this you can also get live traffic and everything so it's probably a lot better then the factory nav!
  17. RatedN

    RatedN New Member

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    Aside from which type of system, handheld or integrated, fits your needs better, it is kind of interesting that Toyota produces two types of navigation systems.

    One is well integrated into the car with many separate components like the underseat mounted GPS CPU/DVD, wheel sensors, etc found in the Prius, Avalon, and all Lexus models except the older ES330. The other is a completely self-contained unit that is only the Toyota nav head-unit and the antenna found in just about every other Toyota model. If your car didn't have one, just buy a complete unit off of eBay, mount the antenna and you're all set. I've seen many tutorials on other forums (like this)on installing the self-contained unit into non-nav cars and it looks as easy as installing any other type of head unit. The interfaces are almost identical as is the functionality.

    My question is, why are there two types? Is one actually better than the other? I would imagine it would have been much cheaper for both the manufacturer and consumer if they integrated everything into the MFD/Stereo.
  18. Jack66

    Jack66 Kinda Jovial Member

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    I wonder if one is set to be a slave on the IEBus and one is set to be a master. The OEMvalue item seems to be a master while the Prius type is a slave.
  19. rob_md

    rob_md New Member

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    Personally, I have the In-dash GPS and find it a joy to use -- with the Lockpick installed. Without that, it's a nightmare because you have to stop the car to do much of anything.

    My other GPS is an older Magellan Roadmate, which I find rather horrible -- You have to copy little areas to the SD card in advance of any road trip.

    The newer GPS units, as I understand them, don't require that sort of pre-planning. But, I'd get the built-in GPS again. There's certain advantages to a built-in system:

    - It mutes the stereo when it wants to tell you something. I've missed turns with the Magellan because I couldn't hear it over the car's stereo.

    - It's near impossible to steal. So, I don't have to hide it. Because, realistically, you need to remove the GPS from the windshield before you get to your destination so it's not plainly obvious that you're hiding your GPS.

    - I never forget it.

    Biggest disadvantage is that the in-dash DVD pricey to update.
  20. jonnyboy

    jonnyboy New Member

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    I am currently attempting this on my base 2006 Prius (despite the hundreds of warnings saying it cannot be done). The MFD on my 2006 is the older (analog) MFD unit, so I looked for a 2004-2005 nav unit. I was able to hook up the nav unit to an old monitor and verified that it does give some output.

    I have fabricated a homemade connector with shells from DB9 plugs and some epoxy. This I hooked up to some wires. I just initially made enough connections to get to the video output and power.

    The forum won't let me post links until I have posted more. I will update this as I go.

    Attached Files:

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