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Home >> Lexus >> 2011 >> RX 350 AWD >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Infotainment >> Navigation System (For HDD) (Diagnostic Codes & Symptom Tests) >> NAVIGATION SYSTEM (for HDD) >> DTC B1596: No Response from Remote Touch; DTC B1563: Remote Touch Disconnected >> Description

DTC B1596: No Response from Remote Touch; DTC B1563: Remote Touch Disconnected: Description

The display and navigation module display and remote touch are connected by the MOST communication line.

When a MOST communication error occurs between the display and navigation module display and remote touch, these DTCs will be stored.

DTC No. DTC Detection Condition Trouble Area
B1596 No response to the diagnostic memory request from the master unit.
  • Remote touch power source circuit
  • MOST circuit between display and navigation module display and remote touch
  • MOST circuit between remote touch and radio receiver assembly
  • Remote touch (remote operation board)
  • Display and navigation module display
B1563 A device that is listed in the MOST network connected device record of the master unit is missing.

HINT: 

For the MOST network, the display and navigation module display is the master unit.