Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual: Removal

Lexus RX (RX 350L, RX450h) 2016-2026 Repair Manual / Engine & Hybrid System / 2gr-fks (cooling) / Water Pump / Removal

REMOVAL

CAUTION / NOTICE / HINT

The necessary procedures (adjustment, calibration, initialization or registration) that must be performed after parts are removed and installed, or replaced during engine water pump assembly removal/installation are shown below.

Necessary Procedures After Parts Removed/Installed/Replaced

Replaced Part or Performed Procedure

Necessary Procedure

Effect/Inoperative Function when Necessary Procedure not Performed

Link

Battery terminal is disconnected/reconnected

Memorize steering angle neutral point

Lane Control System

Pre-collision system

Intelligent clearance sonar system*1

Lighting system (w/ Automatic Headlight Beam Level Control System)

Parking assist monitor system

Panoramic view monitor system

Initialize back door lock

Power door lock control system

Reset back door close position

Power back door system (w/ Outside Door Control Switch)

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

ECU communication ID registration (Immobiliser system)

Engine start function

Perform the following procedures in the order shown (If possible, read the transaxle compensation code from the previous ECM):

  1. Transfer transaxle compensation code
  2. Perform road test to allow ECM to learn
  • Large shift shock
  • Deterioration of fuel efficiency

for U881E Initialization

U881E Registration

U881F Initialization

U881F Registration

Perform the following procedures in the order shown (If impossible, read the transaxle compensation code from the previous ECM):

  1. Reset transaxle compensation code
  2. Perform road test to allow ECM to learn

Perform code registration (Immobiliser system)
  • Wireless door lock control system
  • Smart access system with push-button start
  • Engine start function
  • Steering lock system
  • Telematics system

  • Replacement of throttle body with motor assembly
  • Cleaning the deposits from the throttle body with motor assembly

Inspection after repair
  • Poor idle, etc.
  • Engine start function, etc.

Replacement of brake actuator assembly

Operate the electric parking brake switch assembly

Parking brake indicator light (red) blinks when the engine switch is first turned on (IG)

Calibration
  • VSC disabled or malfunctioning
  • DTCs are output
  • Slip indicator light illuminated
  • ABS warning light illuminated

*1: When performing learning using the Techstream.

Click here

NOTICE:

After the engine switch is turned off, the radio receiver assembly records various types of memory and settings. As a result, after turning the engine switch off, make sure to wait at least 120 seconds before disconnecting the cable from the negative (-) battery terminal.

PROCEDURE

1. REMOVE WATER INLET WITH THERMOSTAT SUB-ASSEMBLY

Click here

2. REMOVE V-RIBBED BELT

Click here

3. REMOVE NO. 2 IDLER PULLEY SUB-ASSEMBLY

(a) Remove the bolt and No. 2 idler pulley sub-assembly.

4. REMOVE WATER PUMP PULLEY

(a) Using a screwdriver or equivalent with its tip wrapped in protective tape, hold the water pump pulley.

*a

Protective Tape

*b

Hold

*c

Turn

(b) Remove the 4 bolts and water pump pulley.

HINT:

There is not enough clearance to completely remove the water pump pulley from the water pump shaft. Remove the water pump pulley together with the engine water pump assembly.

5. REMOVE ENGINE WATER PUMP ASSEMBLY

(a) Remove the 15 bolts, engine water pump assembly, water pump pulley and water pump gasket.
    On-vehicle Inspection
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    Installation
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    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Owners Manual

    Lexus RX (RX 350L, RX450h) 2016-{YEAR} Repair Manual

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