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Toyota Land Cruiser Navigation System



  • willy12willy12 Posts: 13
    Navguy1, you are the bomb......thanks so much for taking the time to help during this frustration--no news from the local dealer after having the LC there for 1 1/2 days now; you're suggestion appears quite simple. Yesterday early we spoke to the mechanic in person who reported he is running diagnostics to verify the ECU is bad, so at least they're on the same page, but not such great "service" right?! Yes, we pray the cyclying off/on will do the trick. If not, then how does one verify a junk yard unit is properly working and can you guess how much time it would take to r2 the unit starting from scratch? Thanks again for your kindness!
  • navguy1navguy1 Posts: 181
    Removing the unit will take some time since it is mounted below the passenger seat. Once that is removed the navigation ECU and amplifier have to be unbolted from the car. Then the navigation ECU must be removed. The whole process will take about 20-30 minutes with the proper sockets and breaker bar - those seats take a lot of umph to unbolt from the chassis.

    How to verify if it works.... you need to give it 12 volts DC. At the very least you would need to connect a 12 volt battery capable of delivering about 3 amps for 15 minutes. That would at the minimum tell you if the DVD map disc would eject. To fully determine if it works you will need to connect to your vehicle. Be careful on the junk yard route since the unit could have been damaged by a collosion (if involved).
  • willy12willy12 Posts: 13 such luck with your recommended powering off. The powering off didn't bring back the display but they were able to eject the disk.. Sierra Toyota didn't charge me to drag me around for 21/2 days of "diagnostics", did remove the ECU unit and was happy to quote me some $5800 ($5587 for the part itself) and claimed they can't get the re-man part. I called the 1 800 Toyota and they said what did the battery guy do when he installed, cross wires? BS. There's nothing in the manual stating be cautious when replacing batt or, it's a dealer only thing. I'll try the internet to find a reasonable part. Liked your suggestion of the power to verify if the unit is bad...i'll try it since i really want to know if it is truly bad.
  • navguy1navguy1 Posts: 181
    What doesn't work? The display or the navigation ECU? What are the conditions?
  • willy12willy12 Posts: 13
    Hi again Navguy, the nav portion of the display remains dark, yet the disk ejected. Toyota says its the ECU that's broken and they'll replace it with a new ECU unit for a mere $5587 bucks......i've called the 1 (800) customer experience service and all they said was the battery guy must have reversed the terminal wires when the new battery was installed. Bull! If merely installing a new battery jacks up anything to do with electronics (lights, fans, stereo, nav) well then, that's a Toyota problem as far as I'm concerned. I told them I'm a long time multi-toyota car owner and they could care less. Any recommendations at this point?!
  • navguy1navguy1 Posts: 181
    Just to confirm climate and radio display on the front monitor? And when you press the MAP button the screen is dark or says EXTERNAL SYSTEM IS NOT CONNECTED.

    If so, then a remanufactured navigation ECU can be purchased for a lot less than $5587. The part number is 86841-47020-OW. The ECUs have new internals and DVD-ROM readers too. Call around for the best pricing since Toyota dealers are free to set their own pricing.
  • willy12willy12 Posts: 13
    Hi again Navguy1. yes, the screen is dark. It's interesting that you report Toyota dealers set their own prices for replacement parts. When i mentioned the pricing to others they fell out, even the Toyota folks. I've called the local regional Toyota 1 (800) folks and all they would retort, oh well the guy that installed your battery must have crossed the wires!!! We'll give you a 10% discount--standard we want to please our customers' crap! Bull-s___!! Alas, my plan is to search the internet to see who has a used unit i suppose.....i can't image a new unit would be affordable (i'm willing to spend $500-700 to get the thing up and running again) but not much more than that. Any other ideas or souces? Thanks so much for your kind assistance, it has been a real Twilight Zone trip...... :P
  • Is the part # for the rebuilt nav ecu is the same on a 2001 LC ?
  • My Toy dealer quoted me $1,650.00 for a new (I think) ECU...$5,800.00 YIKES !!
  • navguy1navguy1 Posts: 181
    Yes. The out of warranty part number (for most navigation hardware) is the same but with -OW for out of warranty. So the navigation ECU for an 01MY LC is 86841-47020-OW.
  • We just purchased 2003 land cruiser with nav system, 6 disc dvd changer and rear seat dvd. On the nav system - the display screen, has an extra button on screen labeled "REAR OFF". We have not been able to determine what this button does? It is located, directly to the right of the "Display" and just to the left of "day mode"
    Can anyone tell us what this button does?
  • Where did you get your quote for your replacement Navigatioin? What a joke this is... I just bought a vehicle... The system was working when I bought it and now it goes in and out. I was qouted $5300.00 to get it fixed. I would buy a portable and say the heck with it but the units control so much more "stuff". No more pre-installed Nav's for me... I'll pay $200.00 for a Tom Tom next go round... :cry:
  • vavavavolvovavavavolvo Posts: 111
    What year is yours?
  • willy12willy12 Posts: 13
    Hi twisterchaser......sorry about your nav sys fiasco as well.......i was quoted $5600 for a replacement unit, which Sierra Toyota (Lancaster, CA) was almost embarassed to quote me--their jaws dropped. I tried to pursue this a little through the Toyota corp help (local out of Torrance, CA) and all they did was attempt to smooth it over by offering to discount it by 10%. Shoot, i'm almost like you, i'll go for a portable one, but the whole issue for me is that Toyota doesn't warn it's owners in either the NAV manual or the std glovebox manual not to replace your car battery without first safing it or else systems could be jeoparized. This is my major gripe......i merely changed out my original battery (2002) and the NAV sys went dark and the dealer and Torrance tried to tell me we must have switched the terminal wires.......BS!!!!! I say they are wrong and legally responsible for not putting out a warning in their manual(s). The built in NAV sys on these top of the line vehicles is a selling feature, at least it was for us (we bought ours used but it worked great until the battery fiasco). I think now I'll try to pursue through the internet for a used unit, search auto junk yards and/ior seek help through a local auto electric outfit. Toyota handling of this matter is very poor and not designed for customer satisfaction.
  • willy12willy12 Posts: 13
    Hi vavavavolvo! mine is a 2002. Can you help finding a replacement unit (the CD player unit that goes under the front passenger's seat?????? Anyone else?!!
  • vavavavolvovavavavolvo Posts: 111
    Willy12--sorry to hear about this. I agree that that is an unbelievable amount of money to spend for replacement system. I--like you--would be looking for a used unit.

    Could you tell those of us with working units what you have learned about how to prevent this from happening, since it sounds like it isn't documented in the manuals.

    What is "Safe mode" and how do you implement it before changing the battery?

  • willy12willy12 Posts: 13
    VaVa...well, i was told by Toyota service that should i have come to them for a battery replacement, they put a device in the cigarette lighter to block anything from happening to the car's computer and like components....I have also heard that one should take off the negative terminal first when switching out batteries to be "safe". Either way, these things aren't common knowledge to the average Joe out there so i contend Toyota is responsible. Of course I wasn't too happy when i had my battery changed out at a battery store and physically watched the young man put take it out and put in the new battery......i did notice immediately my NAV system was dark when i started the ignition after having a working NAV when i pulled into the store.......and, of course, the battery shop owner says they don't have anything to do about it. Either way, the consumer gets the shaft.
  • willy12 my Land Cruiser is an 04'. I have had very little success locating a used unit anywhere... I'm wondering if there is a location you can go to get the unit rebuilt on your own. I'm still looking on line daily for a replacement... Any assistance anyone can give would be great. I wonder if we were to get enough people with this problem together could we force a re-call or class action suit of some kind. I find it hard to believe the cost of replacing these units is so high with no work arounds...
  • rand3rand3 Posts: 1
    Today I took my 2005 Land Cruiser in because the DVD/CD changer wasn't working. Keep in mind....the navigation, the LCD, the handsfree, the radio, the backup camera ALL STILL WORKED. The Toyota Dealer quoted me $4600 to replace the defective DVD/CD changer. The part was quoted at $4200. Here is what kills me. I went to WWW.TOYOTA.COM and priced out a new 2008 Land Cruiser. The option to add ALL the things mentioned above is $3400!!!!!!! Explain that one to me.
  • hypnosis44hypnosis44 Posts: 483
    Sad but true. If one were to rebuild any vehicle one part at a time the total would cost in excess of 200% to 300% more than the purchase price.
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