Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Removal

Battery terminal is disconnected/reconnected

Perform steering sensor zero point calibration

Lane Departure Alert System (w/ Steering Control)

Pre-collision System

Intelligent Clearance Sonar System*1

Lighting System (for Gasoline Model with Cornering Light)

Memorize steering angle neutral point

Parking Assist Monitor System

Panoramic View Monitor System

Replacement of ECM

Vehicle Identification Number (VIN) registration

MIL comes on

ECU communication ID registration (Immobiliser system)

Engine start function

• Replacement of engine assembly
• Gas leak from exhaust system is repaired

Inspection After Repair

• Poor idle, etc.
• Engine start function, etc.

Replacement of automatic transaxle assembly

• Perform reset memory
• Input transaxle compensation code into ECM
• Perform road test to allow ECM to learn

• Large shift shock
• Deterioration of fuel efficiency

for Initialization

for Registration

Replacement of ECM

(If transaxle compensation code read from ECM)

• Perform reset memory*2
• Transfer transaxle compensation code
• Perform road test to allow ECM to learn

Replacement of ECM

(If transaxle compensation code not read from ECM)

• Perform reset memory*2
• Reset transaxle compensation code
• Perform road test to allow ECM to learn

Replacement of ECM

Code registration (Smart Key System (for Start Function))

• Wireless Door Lock Control System
• Smart Key System (for Entry Function)
• Smart Key System (for Start Function)
• Steering lock function

Replacement of automatic transaxle fluid

ATF thermal degradation estimate reset

The value of the Data List item "ATF Thermal Degradation Estimate" is not estimated correctly

• Suspension, tires, etc.

  (If the vehicle height has changed due to suspension or tire replacement)

• Replacement of front bumper assembly

• Measure ultrasonic sensor detection angle
• Ultrasonic sensor detection angle registration

• Intelligent Clearance Sonar System
• Intuitive Parking Assist System

Suspension, tires, etc.

(If the vehicle height has changed due to suspension or tire replacement)

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

Parking Assist Monitor System

for Initialization

for Calibration

Replacement of front bumper assembly

Front television camera view adjustment

Panoramic View Monitor System

for Initialization

for Calibration

Suspension, tires, etc.

(If the vehicle height has changed due to suspension or tire replacement)

• Parking assist ECU initialization
• Adjust steering angle
• Television camera assembly optical axis adjustment (Back camera position setting)

Front wheel alignment adjustment

Perform system variant learning and acceleration sensor zero point calibration.

• VSC is disabled or malfunctions
• DTCs are output
• Slip indicator light illuminates
• ABS warning light illuminates

(a) Turn the crankshaft to gain access to the 6 drive plate and torque converter assembly setting bolts and remove each drive plate and torque converter assembly setting bolt while holding the crankshaft pulley bolt with a wrench.

HINT:

There will be one black colored drive plate and torque converter assembly setting bolt.

(a) Disconnect the vacuum hose from the rear engine mounting insulator.

(b) Disconnect the vacuum hose from the intake air surge tank assembly.

(a) Disengage the 3 hose clamps to disconnect the breather plug hose.

(c) Remove the breather plug sub-assembly from the breather plug hose.

NOTICE:

Be careful not to damage the breather plug sub-assembly.

(a) Disengage the 2 clamps to remove the transmission breather clamp.

(b) Slide the clip and disconnect the No. 1 water by-pass hose from the transmission oil cooler.

HINT:

Use a container to catch any coolant which flows out of the No. 1 water by-pass hose and transmission oil cooler.

(a) Slide the clip and disconnect the water by-pass hose assembly from the transmission oil cooler.

HINT:

Use a container to catch any coolant which flows out of the water by-pass hose assembly and transmission oil cooler.

(b) Disengage the clamp to disconnect the water by-pass hose assembly from the automatic transaxle assembly.

(a) Disengage the claw, rotate the lever and disconnect the transmission wire connector.

(b) Disconnect the park/neutral position switch assembly connector.

(c) Disengage the wire harness clamp and disconnect the vacuum switching valve (for active control engine mount system) connector.

(d) Remove the 2 bolts.

(e) Remove the bolt.

(g) Remove the 2 bolts.

(j) Disengage the 3 wire harness clamps to disconnect the wire harness from the automatic transaxle assembly.

(a) Remove the 3 bolts and front engine mounting bracket from the transaxle housing.

(b) Remove the 11 bolts and automatic transaxle assembly.

NOTICE:

To prevent damage to the knock pins, do not pry between the automatic transaxle assembly and engine assembly.

(a) Remove the 5 bolts and engine mounting insulator LH from the automatic transaxle case sub-assembly.

(a) Remove the 4 bolts and rear engine mounting bracket sub-assembly from the transaxle housing.

(a) Remove the 2 clips and automatic transmission case cover from the automatic transaxle case sub-assembly.

(a) Remove the 2 bolts and No. 1 transmission control cable bracket from the automatic transaxle case sub-assembly.

(a) Remove the transmission case plug assembly from the transaxle housing.

(a) Remove the bolt and wire harness clamp bracket from the automatic transaxle case sub-assembly.

(b) Remove the 2 bolts and 2 wire harness clamp brackets from the automatic transaxle case sub-assembly.