Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Detecting Vehicle Submersion (B2277)

• *: Only detected while a malfunction is present.

NOTICE:

• When using the Techstream with the engine switch off, connect the Techstream to the DLC3 and turn a courtesy light switch on and off at intervals of 1.5 seconds or less until communication between the Techstream and the vehicle begins. Then select the vehicle type under manual mode and enter the following menus: Body Electrical / Smart Access. While using the Techstream, periodically turn a courtesy light switch on and off at intervals of 1.5 seconds or less to maintain communication between the Techstream and the vehicle.
• The smart access system with push-button start (for Start Function) uses the LIN communication system and CAN communication system. Inspect the communication function by following How to Proceed with Troubleshooting. Troubleshoot the smart access system with push-button start (for Start Function) after confirming that the communication systems are functioning properly.

  Click here

• Before replacing the certification ECU (smart key ECU assembly), refer to the smart access system with push-button start (for Start Function) Precaution.

  Click here

• After repair, confirm that no DTCs are output by performing "DTC Output Confirmation Operation".

HINT:

• Before proceeding with troubleshooting, check if there are any signs of water damage to the certification ECU (smart key ECU assembly). If there are any signs of water damage, replace the certification ECU (smart key ECU assembly) and take measures against the cause of the water damage.
• When the cable is disconnected and reconnected to the negative (-) battery terminal, the power source mode returns to the state it was in before the cable was disconnected.

ACC Monitor Malfunction (B2274)

DESCRIPTION This DTC is stored when a malfunction in the ACC output circuit is detected. The ACC output circuit is the circuit between terminal ACCD of the certification ECU (smart key ECU assembly) a ...

Engine/Power Switch Malfunction (B2278)

DESCRIPTION This DTC is stored when the SSW1 contact signal and SSW2 contact signal, which are detected when the engine switch is operated, do not match. DTC No. Detection Item DTC Detection Co ...

Other materials:

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Cylinder Block: Replacement
REPLACEMENT PROCEDURE 1. REPLACE STRAIGHT PIN NOTICE: If a straight pin is deformed, replace it. (a) Using a plastic hammer, tap in new straight pins to the cylinder block sub-assembly. *a Front Side *b Rear Side *c Top Side *d Bottom Side *e RH Side *f 23 mm (0.906 in. ...

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual > Sfi System: ACIS Control Circuit
DESCRIPTION ACIS (Acoustic Control Induction System) controls the opening and closing the intake air control valve sub-assembly built into the intake air surge tank assembly to increase the intake efficiency according to the engine load. When the engine speed is between 0 and 4300 rpm and the thrott ...