Lexus RX (RX 350L, RX450h) 2016-2025 Repair Manual: Disassembly

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Disconnect cable from negative battery terminal

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 code registration (Immobiliser system)

Inspection After Repair

Replacement of automatic transaxle assembly

Perform the following procedures in the order shown:

for U881E Registration:

for U881E Initialization:

for U881F Registration:

for U881F Initialization:

Replacement of ECM

(If possible, read the transaxle compensation code from the previous ECM)

Perform the following procedures in the order shown:

Replacement of ECM

(If impossible, read the transaxle compensation code from the previous ECM)

Perform the following procedures in the order shown:

Front wheel alignment adjustment

Calibration

Suspension, tires, etc.

(The vehicle height changes because of suspension or tire replacement)

Rear television camera assembly optical axis (Back camera position setting)

Parking assist monitor system

for Initialization:

for Calibration:

Panoramic view monitor system

for Initialization:

for Calibration:

Initialize No. 1 headlight ECU sub-assembly LH

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

(a) Using SST and wooden blocks, compress the inner compression spring and remove the 6 valve spring retainer locks from the valve spring retainer.

SST: 09202-70020

09202-01010

09202-01020

SST: 09202-00021

HINT:

Arrange the removed parts in such a way that they can be reinstalled to their original locations.

(a) Using SST and wooden blocks, compress the inner compression spring and remove the 6 valve spring retainer locks from the valve spring retainer.

SST: 09202-70020

09202-01010

09202-01020

SST: 09202-00021

HINT:

Arrange the removed parts in such a way that they can be reinstalled to their original locations.

(a) Using needle-nose pliers, remove the 6 intake valve stem oil seals from the intake valve guide bush.

(a) Using compressed air and a Magnet Hand, remove the 12 valve spring seats by blowing air onto them from the cylinder head LH.

HINT:

Arrange the removed parts in such a way that they can be reinstalled to their original locations.

(a) Using a 10 mm hexagon socket wrench, remove the 2 No. 1 straight screw plugs and 2 water hole gaskets from the cylinder head LH.

(a) Using a 14 mm hexagon socket wrench, remove the No. 2 straight screw plug and cylinder head screw plug gasket from the cylinder head LH.

(a) Using a 10 mm hexagon socket wrench, remove the 4 No. 3 straight screw plugs and 4 cylinder head screw plug gaskets from the cylinder head LH.