DIAGNOSIS SYSTEM
DESCRIPTION
(a) The DCM (telematics transceiver) control the vehicle safety connect system functions. Safety connect system data and Diagnostic Trouble Codes (DTCs) can be read through the vehicle Data Link Connector 3 (DLC3). In some cases, a malfunction may be occurring in the safety connect system. When the system seems to be malfunctioning, use the Techstream to check for malfunctions and perform repairs.
CHECK DLC3
(a) Check the DLC3.
Click here
INSPECT BATTERY VOLTAGE
(a) Measure the battery voltage.
Standard voltage:
11 to 14 V
If the voltage is below 11 V, recharge or replace the battery.
CHECK INDICATOR
(a) When a malfunction is detected in the safety connect system, the manual (SOS) switch red indicator on the manual (SOS) switch illuminates to inform the driver of the malfunction.
Click here
Problem Symptoms Table
Terminals Of EcuLexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Audio And Visual System (for 12.3 Inch Display): Extension Module Malfunction 2 (B1556)
DESCRIPTION This DTC is stored when a malfunction occurs in the Navigation ECU. DTC No. Detection Item DTC Detection Condition Trouble Area B1556 Extension Module Malfunction 2 When any of the following conditions is met:
Internal power supply malfunction
Internal hard drive ma ...
Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Brake Pedal: Adjustment
ADJUSTMENT PROCEDURE 1. INSPECT AND ADJUST BRAKE PEDAL HEIGHT (a) Remove the front door scuff plate LH. w/o Rear No. 2 Seat: Click here w/ Rear No. 2 Seat: Click here (b) Remove the cowl side trim board LH. Click here (c) Remove the No. 1 instrument panel under cover sub-assembly. Click her ...