WARNING: This page is about a different car, the 2007 Lexus SC 430. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

After replacing the multi-display or the navigation ECU, the screen's display may be affected by noise. Perform the adjustment below to reduce screen noise.
Illustrations may differ from the actual vehicle depending on the device settings and options. Therefore, some detailed areas may not be shown exactly the same as on the actual vehicle.
Perform both procedures below when the multi-display is replaced.

Fig 1: Diagnostic Tool Display - No Err
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

HOW TO PERFORM SCREEN NOISE AUTOMATIC ADJUSTMENT
1. When either the multi-display or the navigation ECU is replaced:
  1. Turn the ignition switch to ACC and wait for at least 6 seconds to activate the diagnostic mode (see DTC CHECK / CLEAR ).
  2. Select "Navigation Check" from the "Diagnosis MENU" screen.
    
    Fig 2: Display Diagnosis MENU Screen - Navigation Check
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. The screen enters "Navigation Check" with a beeping sound. Adjustment is completed when the completion mark is displayed.
  4. Cancel the diagnostic mode (see DTC CHECK / CLEAR ).
    
    Fig 3: Display Diagnosis MENU Screen - Navigation Check
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Navigation System: Adjustment

Use the Manual With the Right Hardware

When to See a Mechanic