PRECAUTION
PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE BATTERY TERMINAL
NOTICE:
When disconnecting the cable from the negative (-) battery terminal, initialize the following system(s) after the cable is reconnected:
System | See Procedure |
---|---|
Lane Control System | |
Pre-collision System | |
Intelligent Clearance Sonar System | |
Parking Assist Monitor System | |
Panoramic View Monitor System | |
Lighting System (w/ Automatic Headlight Beam Level Control System) | |
Power Door Lock Control System | |
Power Back Door System (w/ Outside Door Control Switch) |
TROUBLESHOOTING PRECAUTION
NOTICE:
Click here
HINT:
When replacing the 4WD ECU assembly with a new one, it is not necessary to perform calibration.
"4WD CONTROL PREVENTION MODE" OR "VSC/TR(A)C/4WD CONTROL PREVENTION MODE" PROCEDURES FOR INSPECTION AND MAINTENANCE
NOTICE:
In the case of using a speedometer tester, brake tester, or chassis dynamometer, etc., there is some possibility of a speed differential between the front and rear wheels. Therefore, before performing the test, make sure to enter "4WD Control Prevention Mode" or "VSC/TR(A)C/4WD Control Prevention Mode".
(a) Entering and Canceling "4WD Control Prevention Mode" (When Using Techstream)
HINT:
The operation of the dynamic torque control AWD system can be prohibited by entering "4WD Control Prevention Mode".
(1) Enter "4WD Control Prevention Mode"
CAUTION:
When using a drum tester while in "4WD Control Prevention Mode", secure the vehicle with chains for safety.
NOTICE:
HINT:
Check that the AWD test mode message is displayed on the multi-information display.
Tester Display |
---|
4WD Control Prevention Mode |
(2) Cancel "4WD Control Prevention Mode"
NOTICE:
Do not turn the engine switch off within 60 seconds of entering "4WD Control Prevention Mode". If the engine switch is turned off within 60 seconds, "4WD Control Prevention Mode" will continue when the engine switch is turned on (IG) again.
HINT:
Check that the AWD test mode message is no longer displayed on the multi-information display.
(b) Entering and Canceling "VSC/TR(A)C/4WD Control Prevention Mode" (When not using Techstream)
HINT:
When entering "VSC/TR(A)C/4WD Control Prevention Mode" when not using the Techstream, operation of both the vehicle stability control system and the dynamic torque control AWD system is prohibited.
(1) Enter "VSC/TR(A)C/4WD Control Prevention Mode"
CAUTION:
When using a drum tester while in "VSC/TR(A)C/4WD Control Prevention Mode", secure the vehicle with chains for safety.
HINT:
(2) Cancel "VSC/TR(A)C/4WD Control Prevention Mode"
NOTICE:
Do not turn the engine switch off within 60 seconds of entering VSC/TR(A)C/4WD Control Prevention Mode". If the engine switch is turned off within 60 seconds, "VSC/TR(A)C/4WD Control Prevention Mode" will continue when the engine switch is turned on (IG) again.
HINT:
Check that the AWD test mode message and TRAC OFF message are not displayed on the multi-information display and that the VSC OFF indicator light is not illuminated.
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Navigation System: NTSC Disconnected (from Park Assist/Monitoring ECU) (B1535,C1622)
DESCRIPTION These DTCs are stored if the radio receiver assembly judges that the signals or signal lines between the rear television camera assembly and the multi-display assembly are not normal as a result of its self check. DTC No. Detection Item DTC Detection Condition Trouble Area B ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Power Steering System: EPS Warning Light Circuit
DESCRIPTION If the power steering ECU assembly detects a malfunction, the power steering ECU assembly stores a DTC and illuminates the EPS warning light. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE:
If the power steering ECU assembly has been replaced, perform assist map writing and torque sen ...