OPERATION CHECK
OPERATION CHECK
(a) Turn the engine switch off.
(b) Connect the trailer connector to the towing socket connector.
(c) Check that the stop lights on the vehicle and trailer come on when the brake pedal is depressed.
(d) Check that the taillights on the vehicle and trailer come on when the taillights are turned on.
(e) Check that the hazard warning lights on the vehicle and trailer come on when the hazard warning switch is turned on.
(f) Turn the engine switch on (IG).
(g) Check that the turn indicator lights on the vehicle and trailer come on when the turn indicator lights are turned on.
HINT:
When the Automatic Current Cut function activates, reset the towing converter system by operating the turn signal switches and brake pedal, and turning hazard warning switch and light control switch off then on.
System Diagram
Problem Symptoms TableLexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Safety Connect System: Diagnosis System
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 saf ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Lighting System (w/ Automatic Headlight Beam Level Control System): Open in IG Circuit (B242E)
DESCRIPTION The No. 1 headlight ECU sub-assembly operates using the power source voltage input from the IG terminal and ECUB terminal. The IG terminal power source voltage is supplied by turning the IG1 relay to ON. The No. 1 headlight ECU sub-assembly receives engine switch on (IG) signals from the ...