Navigation System - How To Proceed With Troubleshooting
Ask the customer about symptoms and confirm malfunctions.
Navigation System - System Description
Vehicle position tracking methods
It is essential that the navigation system correctly tracks the current vehicle position and displays it on the map. There are 2 methods to track the current vehicle position: autonomous (dead reckoning) and GPS* (satellite) navigation. Both navigation methods are used in conjunction with each other.
*GPS (Global Positioning System)
Navigation System - System Diagram
Lexus IS250 IS220d GSE20 ALE20 NAVIGATION
Navigation System - Parts Location
Lexus IS250 IS220d GSE20 ALE20 NAVIGATION
Navigation System - Precaution
Lexus IS250 IS220d GSE20 ALE20 NAVIGATION
Window Glass Antenna Wire - Repair
Check the voltage at the center of each wire, as shown in the illustration.
Window Glass Antenna Wire - On-Vehicle Inspection
Check for continuity of the antenna.
Microphone - Installation
Engage the 2 claws and install the amplifier microphone.
Microphone - Removal
Using a screwdriver, disengage the 3 claws and open the cover.
Microphone - Components
Lexus IS250 IS220d GSE20 ALE20 AUDIO / VISUAL