Lexus 04-08 RX
Navigation / DVD Bypass Solution
Tools you need:
- Ratchet with 10mm bolt head
- Ratchet extension wand – very important – 8-10” is about right
- Velcro for the SLI placement
- Flashlight
- Flathead screwdriver
- Towel
Optional tools (not required but helpful):
- Telescoping magnet tool
- Black electrical tape
Step 1: PUT PARKING BRAKE ON
Step 2: UNSCREW & REMOVE SHIFT KNOB
Step 3: REMOVE THE TAB AND PRESS THE INSIDE BUTTON TO SHIFT THE KNOB TO 'D' or ‘L’ (to get the shift knob out of the way) - The tab on the upper left of the shifter gate can be removed with a small flathead.
Step 4: PULL OFF THE WOOD SHIFTER GATE TRIM – Put both hands at the bottom of wood trim and pull upwards evenly on the left/right. It takes a little bit of force, but eventually the bottom part will come up, and then gently pull the top part off. This piece of trim is held on only by 4 clips.
Step 5: PULL OFF THE CIG LIGHTER WOOD TRIM PIECE – Put one hand behind the left side of the wood trim and the other hand behind the wood trim on the right. Pull evenly towards your body (pull straight out) and the piece will give and come out. This piece of trim is held on only by 2 clips. You do not have to unplug the wires on this piece; you can just let the thing dangle off the side.
Step 6: REMOVE FIRST TWO (2) 10mm BOLTS HOLDING IN THE RADIO ASSEMBLY (RA) – The first two are easy to remove; you can see them immediately once you look underneath the RA. I would suggest using your hand to remove the final few counterclockwise twists so that the bolts don’t fall into the cavity below.
Step 7: REMOVE FINAL TWO (2) 10mm BOLTS HOLDING IN THE RADIO ASSEMBLY (RA) – Warning: These bolts are difficult to see/reach and the distance you have to pull them out of the RA is quite long. It is easy to drop the bolts in the cavity – if this happens, you will NOT get them back! They will be lost in oblivion. The good news is that you don’t really need these two and the loss of 2 bolts doesn’t create any issues, but it is annoying to lose them. There are two holes to the left and right of bolts you just removed in Step 6. If you shine your flashlight into the hole, you will see a bolt up and towards the back. Stick the ratchet extension thru that hole and remove that bolt. What I did is keep going until it felt loose (this took several tries – just be patient), and when the bolt was just about ready to be taken out, I stuck in a telescoping magnet to “fish” it out safely. (If you unscrew it too far, it will fall into the cavity.)
Step 8: PLACE TOWEL OVER THE SHIFT KNOB AREA
Step 9: REMOVE RADIO ASSEMBLY – Put one hand underneath the left side of RA, the other hand underneath the right side. Pull towards you and the whole unit slides out easily. Let the unit rest on the towel supported by the naked shift knob handle.
Step 10:Find the wires and Ground them
This will disable the DVD and or Bluetooth lockout while driving.
26 pin plug behind the Multi Display
Navigation hack during motion
Step 1: remove the tool tray out of the luggage compartment. This is easy; just open the door to expose the tool tray. Lift the back of the tool tray and pull it toward the back of the car. It should slide out. Once the tool tray is out you should see a DVD player on the passenger side.
Step 2: unplug the large white plug on the back of the DVD player. The plug that you are interested in is the largest plug on the back of the DVD player. This is 24 pin connector. There is only one wire that you are interested in. it is brown wire located at pin number 4. There is only one brown wire so it should be easy to identify.See the picture below for the N3 Plug.
Step 3: cut the brown wire. Make sure to leave enough wire on both sides to splice in the new wire that you are going to run to the front of the car next to driver side.
Step 4: take 2 wires, each 20 foot long. Connect one wire to the plug side of the brown wire that was cut in the step 3 above. Connect the 2nd wire to the body side of the brown wire that was cut in step 3.
Step 5: run the 2 wires to the front of the car on the driver side. This is fairly easy. I put my wires under the door scuff plates. The scuff plates can be pulled up easily. These are held in with clips only.
Step 6: run the wires to where you are going to install the switch. You can get .ON. and .OFF. switch from local radio shack or auto parts store. Here is the link to the switch that I used. http://www.radioshack.com/product/in...entPage=search
Install the switch and land the wires on to the switch.
When the switch is in position .1. the system works just like it would be from factory. When you want to input the address into navigation while moving just flip the switch in position .O.. This will cut the speed signal to the navigation ECU. So the ECU thinks that the car is stopped and all of the buttons are released. Once you are done with the entry, flip the switch back and everything should be back to normal. If you forget to flip the switch back the Nav system will be choppy.
For the 2004:
You need to do this:
(1) cut the speed sensing wire
(2) cut the nav speed wire
(3) connect one end of the nav speed wire to the vehicle speed sensing wire (so your nav doesn't get "lost" after the hack)
(4) cut the parking brake wire and ground it to a the metal frame holding the head unit
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