Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Brake Hydraulic Pressure Malfunction (C164F)
DESCRIPTION
When a malfunction signal sent from the skid control ECU via CAN communication is detected by the clearance warning ECU assembly, DTC C164F is stored.
| DTC No. | Detection Item | DTC Detection Condition | Trouble Area |
|---|---|---|---|
| C164F | Brake Hydraulic Pressure Malfunction | Brake master cylinder brake fluid pressure abnormal | Vehicle stability control system |
CAUTION / NOTICE / HINT
NOTICE:
-
After turning the engine switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work.
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After replacing an ultrasonic sensor or the clearance warning ECU assembly, perform the necessary procedures (adjustment, calibration, initialization or registration).
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PROCEDURE
| 1. | CHECK DTC OUTPUT |
(a) Using the Techstream, check for DTCs according to the prompts on the screen.
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HINT:
After turning the engine switch from off to on (IG), wait 4 seconds or more before checking for DTCs.
Body Electrical > Advanced Parking Guidance/ICS/Intuitive P/A > Trouble Codes(b) Clear the DTCs according to the screen on the Techstream.
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(c) Recheck for DTCs.
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HINT:
- DTC C164F is stored when a malfunction signal sent from the vehicle stability control system is detected.
- If the malfunctioning part has been repaired or replaced before rechecking for DTCs, DTC C164F will not be output again.
-
If DTC C164F is output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs.
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| Result | Proceed to |
|---|---|
| DTC C164F is output | A |
| DTC C164F is not output | B |
| A |  | GO TO VEHICLE STABILITY CONTROL SYSTEM |
| B | | USE SIMULATION METHOD TO CHECK |
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Outside Air Temperature Sensor (C1652)
DESCRIPTION When a malfunction signal sent from the air conditioning system via CAN communication is detected by the clearance warning ECU assembly, DTC C1652 is stored. DTC No. Detection Item ...
Other materials:
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Occupant Classification System: Terminals Of Ecu
TERMINALS OF ECU OCCUPANT DETECTION ECU Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition b10-1 (SVC1) - b10-5 (SGD1) R - G Front occupant classification sensor LH power supply Engine switch on (IG) 11 to 14 V b10-2 (SVC3) - b10-6 (SGD3 ...
Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual > Vehicle Stability Control System: Parts Location
PARTS LOCATION ILLUSTRATION *A w/o AVS *B for 2WD *C for AWD - - *1 FRONT SPEED SENSOR RH *2 FRONT SPEED SENSOR LH *3 FRONT AXLE HUB SUB-ASSEMBLY RH - FRONT SPEED SENSOR ROTOR RH *4 FRONT AXLE HUB SUB-ASSEMBLY LH - FRONT SPEED SENSOR ROTOR LH *5 REAR SKI ...
Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual
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Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual
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