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Discussion Starter · #1 · (Edited)
Thanks to Muzzman1 and Lexus_x_2 on clublexus for the info to bypass the Nav system. I just have it done this morning and it's working great. Now i can Dial the phone number, change MP3 folder and access to a lot of functions on the Navigation when the car is moving. I didn't have ML so no DVD player in my car, shoulda had it. But if you have the ML this hack will enable the DVD screen to play when your car is moving.Here's the DYI step by step:

Duration: 30 minutes
1.)Remove the sliver pieces to the right and left of the wood trim on either side ot the shifter....they are simply held in with clips, they come out up/back diagonally

2.) Re move the shift knob by turning it counterclockwise.


3.)Remove the shifter plate assembly by opening the ashtray door and pull up with your fingers (i slid the armrest back) it is also held in with simple clips.

4.)Remove ashtray assy (two phillips screws)

5.)If you look in the top of the air vents you will see four 1/4" holes in the two vents. If you gently insert a flat head scewdriver at about a 45 degree angle up into the holes and gently pry down you will see that a plastic clip will come down with the driver and clip into a down position....do this to all four...then with a "plastic" pry tool, pry the vents out ...the dash is very forgiving....it will not dent...(at least mine did not) and pull the vents out again they are held in with astandard clips....This was the hard part

6.)Remove the Nav unit . There are 4 10mm bols holding in the complete NAV assy....remove them and you are set

7.)Cut the PINK wire located on connector J50 and the WHITE (with silver paint) wire on connector P1.

After cutting the Pink and White wires, you put a cap on the wires comming from the Navigation unit. You then connect the Pink (wireloom side) and White (wireloom side) wires together.


*** Note if you have ML and want it to play DVD when moving. You will need to GROUND the parking break wire also. It's the RED wire on the J50 connector.
Have a Happy New Year everyone :woohoo:
 

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yes, also +rep.
def going to do that when i get my 350.
 

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Good deal even though I dont have Navi nor a 250/350. Just pray that you dont have any navi problems down the road and have to warranty it. +rep.
 

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Discussion Starter · #7 ·
Thank you for the comment guy. I got this mod from club lexus and a lot of people there have done it. It work also on the new GS and a popular mod on their forum. All the wire specs are base on from Techincal Information Systems <http://techinfo.lexus.com/>
 

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Dr. JDM
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someone figure this out for the IS300 please!
 

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Dr. JDM
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OKCIS said:
Figure out what? theres none of this to figure out on the IS300
huh? nav access while moving WITHOUT rewiring a button somewhere that messes with your speedo
 

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Dr. JDM
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OKCIS said:
Every IS300 ive ever been in that had NAV worked while it was going down the road..........
whatever dude. you don't understand, read my post again and come back when you have a real answer
 

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chado said:
huh? nav access while moving WITHOUT rewiring a button somewhere that messes with your speedo
Wiring a button does not mess w/ the speedo. It only lies to the NAV.

And NAV will figure out the car is moving sooner or later even if you switch off the speed sensor, so I don't think it's useful to do the mod w/o a button, if at all possible.
 

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Dr. JDM
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sleepy said:
Wiring a button does not mess w/ the speedo. It only lies to the NAV.

And NAV will figure out the car is moving sooner or later even if you switch off the speed sensor, so I don't think it's useful to do the mod w/o a button, if at all possible.
but do you get the point of this whole thread. someone figured out how to do this without a button. and that's what i want. read the threads about the nav hack with a button and you'll realize there can be problems with it
 
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