irish87

In trying to determine whether to replace my navigation ecu, I was offered a Gen 4 unit with the new disc saying it would essentially "plug and play" in my 02 LS430. The bracket is the same. The wiring is the same. The unit would be a much better experience. Can someone confirm or deny this? Thanks.

I just experienced the same problem. The dealer said that I need a new nav ecu. I put a post to see if anyone experienced the same prob. So far you are the only person. I got a price for a new unit it is 895. I am going to tear it down tonight to see if I can locate the problem. My 02 LS430 has the same issue. My dealer wanted $1900 for ECU, new disc, and install. $895 sounds like a steal.

Okay, the dealer wasn't as bad as potentially could have been, but it is Lexus...it still wasn't cheap. After about 30 minutes in the shop, they told me I needed a new Navigation ECU. They could put one in, with the new 2010 disc map, for $1900+ tax. Since they wanted $1500 for the ECU, I thought I might try to find one on my own. I posted a message on a parts board and got a call from someone offering me a Gen 4 ECU (my 2002 has Gen 2/3) and the new 2010 disc for $750. Does anyone know if that switch would work? He tells me the unit is the same size and uses the same bracket and plug. It also has the override option to work on the destination while still driving. It sounds like Gen 4 is so much better than 2/3 and the idea has me thinking. Is there any corroboration out there? Would I have to do anything else to make the switch?

CuriousB, Yes, it is the factory installed map DVD. It is very strange. When I start the car, it works okay for about 5 seconds. The map is there. It tracks my first movements, then stops. Any insight? Did you fix the problem? I just purchased the same car and has the same problem. Any advice? The problem never got fixed. I am finally breaking down and bringing it into the dealer on Wednesday morning. I'm hoping it is just a loose wire. I guess I'll never know, but it will cost me a few hundred minimum I bet.

CuriousB, Yes, it is the factory installed map DVD. It is very strange. When I start the car, it works okay for about 5 seconds. The map is there. It tracks my first movements, then stops. Any insight?

I have searched the forums, but haven't found this specific issue. The car has been in the family since new. I've had it for the past 3 1/2 years. Never had an upgrade or issue with the nav system. When I start the car, the nav map accurately appears for about 3-5 seconds and then switches to the following error message: Unable to read data. Check if map DVD is correct. I have pulled out the nav unit from the trunk, checked the connections, and cleaned the disc. Still with the same results. I loathe the idea about taking this to the dealer as they always want to fix something other than what I came in with at ridiculous costs. I am hoping someone here can point me in a reasonable solution (the glue gun around the torn sub-woffer saved me from buying a $600 dealer part plus installation and cost me $1.50 :) ). Thank you!

Thanks for the info. My car happened to be at the dealer and I asked for an estimate to replace it...$649 installed. I passed. A little more research and I found the glue gun solution on another post. I tried it a couple of days ago. So far, so good. While I am a bit older than 25, I still like to crank it up every once in a while. Now I can as the glue solution seems to work. Thanks to both of you.

The speaker/subwoofer on the back window deck can't handle the bass anymore without cracking. Almost sounds like wires are crossed, but I realize it is shot. I need to confirm what I've read on other posts: 1. This is a subwoofer that needs to be replaced. 2. I have to use one with similar ohms or I need to add an amp as well. 3. The only way to switch this out is to remove the back seat first. 4. The guys at Best Buy are likely not the best place to get this done. I should find a car stereo place if I can. 5. Removing the back seat is a real PITA. Please confirm that my research is correct and please make any suggestions on the best way to handle this situation. Thanks for the help. I love my car, but need the sound back. :cries: