Display "Information" screen
Go to "Information": "MENU" button → "Info"
Available when in a traffic supported HD Radio coverage area

Traffic information map
Go to "Traffic Map": "MENU" button → "Info"→"Traffic Incidents"
The line color means the following:
Red: Heavy congestion
Yellow: Moderate traffic
Green: Free flowing traffic

Other function
USB photoLexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Lin Communication System: LIN Communication Bus Malfunction (B2325)
DESCRIPTION If the main body ECU (multiplex network body ECU) detects a communication error with an ECU connected to the door bus lines for 7 seconds or more, DTC B2325 will be stored. DTC No. Detection Item DTC Detection Condition Trouble Area B2325 LIN Communication Bus Malfunction ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Smart Access System With Push-button Start (for Start Function): Lost Communication with ECM / PCM (U0100,U0140,U0142,U0155,U1117)
DESCRIPTION These DTCs are stored when there is a CAN communication malfunction between the certification ECU (smart key ECU assembly), ECM, main body ECU (multiplex network body ECU) or combination meter assembly, and data from the option connector (bus buffer ECU) cannot be received. DTC No. ...