Toyota Avalon (XX50): Rear Seat Assembly

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual / Vehicle Interior / Seat / Rear Seat Assembly

Components

COMPONENTS

ILLUSTRATION

*A	for HV Model	-	-
*1	LUGGAGE TRIM SERVICE HOLE COVER	-	-

ILLUSTRATION

*A	w/ Seat Heater System	-	-
*1	SPARE WHEEL COVER ASSEMBLY	-	-

ILLUSTRATION

*A	for Gasoline Model	*B	for HV Model
*C	w/ Seat Heater System	-	-
*1	LUGGAGE COMPARTMENT INNER TRIM PAD	*2	REAR CENTER SEAT OUTER BELT ASSEMBLY
*3	REAR SEAT CUSHION ASSEMBLY	*4	REAR SEAT CUSHION LOCK HOOK
*5	REAR SEAT HEADREST ASSEMBLY	*6	REAR SEATBACK ASSEMBLY LH
*7	REAR SEATBACK ASSEMBLY RH	*8	REAR SIDE SEATBACK ASSEMBLY LH
*9	REAR SIDE SEATBACK ASSEMBLY RH	-	-
	Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": Nm (kgfcm, ft.*lbf)	●	Non-reusable part

ILLUSTRATION

*A	for RH Side	*B	for LH Side
*1	REAR SEAT AIRBAG ASSEMBLY LH	*2	REAR SEAT AIRBAG ASSEMBLY RH
*3	REAR SEAT SHOULDER BELT GUIDE LH	*4	REAR SEAT SHOULDER BELT GUIDE RH
*5	REAR SIDE SEATBACK COVER SUB-ASSEMBLY LH	*6	REAR SIDE SEATBACK COVER SUB-ASSEMBLY RH
*7	REAR SIDE SEATBACK FRAME SUB-ASSEMBLY LH	*8	REAR SIDE SEATBACK FRAME SUB-ASSEMBLY RH
*9	REAR SIDE SEATBACK PAD LH	*10	REAR SIDE SEATBACK PAD RH
	Tightening torque for "Major areas involving basic vehicle performance such as moving/turning/stopping": Nm (kgfcm, ft.*lbf)		Nm (kgfcm, ft.*lbf): Specified torque
●	Non-reusable part	-	-

ILLUSTRATION

*A	for LH Side	*B	w/ Seat Heater System
*1	REAR SEATBACK HEATER ASSEMBLY	*2	REAR SEATBACK UPPER LOCK BEZEL
*3	SEPARATE TYPE REAR SEATBACK COVER	*4	SEPARATE TYPE REAR SEATBACK COVER WITH PAD
*5	SEPARATE TYPE REAR SEATBACK PAD	*6	REAR SEAT HEADREST SUPPORT
*7	REAR SEATBACK FRAME SUB-ASSEMBLY LH	*8	TAG PIN
●	Non-reusable part	-	-

ILLUSTRATION

*A	for RH Side	*B	w/ Seat Heater System
*1	REAR SEAT CENTER ARMREST ASSEMBLY	*2	REAR SEAT CENTER SHOULDER BELT GUIDE
*3	REAR SEATBACK HEATER ASSEMBLY	*4	REAR SEATBACK HINGE COVER
*5	REAR SEATBACK UPPER LOCK BEZEL	*6	SEPARATE TYPE REAR SEATBACK COVER
*7	SEPARATE TYPE REAR SEATBACK COVER WITH PAD	*8	REAR SEAT HEADREST SUPPORT
*9	REAR SEATBACK FRAME SUB-ASSEMBLY RH	*10	SEPARATE TYPE REAR SEATBACK PAD
*11	BUSH	*12	HOG RING
*13	TAG PIN	-	-
	Nm (kgfcm, ft.*lbf): Specified torque	●	Non-reusable part

ILLUSTRATION

*A	for Gasoline Model	*B	w/ Seat Heater System
*1	BENCH TYPE REAR SEAT CUSHION COVER	*2	CHILD RESTRAINT SEAT BASE COVER
*3	CHILD RESTRAINT SEAT COVER	*4	REAR SEAT CUSHION HEATER ASSEMBLY
*5	REAR SEAT CUSHION PAD SUB-ASSEMBLY	*6	HOG RING
*7	TAG PIN	-	-
●	Non-reusable part	-	-

ILLUSTRATION

*A	for HV Model	*B	w/ Seat Heater System
*1	BENCH TYPE REAR SEAT CUSHION COVER	*2	CHILD RESTRAINT SEAT BASE COVER
*3	CHILD RESTRAINT SEAT COVER	*4	REAR SEAT CUSHION HEATER ASSEMBLY
*5	REAR SEAT CUSHION PAD SUB-ASSEMBLY	*6	HOG RING
*7	TAG PIN	-	-
●	Non-reusable part	-	-

Disassembly

DISASSEMBLY

CAUTION / NOTICE / HINT

CAUTION:

Wear protective gloves. Sharp areas on the parts may injure your hands.

PROCEDURE

1. REMOVE REAR SEAT SHOULDER BELT GUIDE LH (for LH Side)

(a) Remove the 2 screws.

(b) Disengage the guide to remove the rear seat shoulder belt guide LH.

2. REMOVE REAR SIDE SEATBACK COVER SUB-ASSEMBLY LH (for LH Side)

(a) Remove the 2 nuts.

(b) Disengage the 14 hooks.

(c) Remove the rear side seatback cover sub-assembly LH from the rear side seatback frame sub-assembly LH as shown in the illustration.

Remove in this Direction

3. REMOVE REAR SEAT AIRBAG ASSEMBLY LH (for LH Side)

Click here

4. REMOVE REAR SEAT SHOULDER BELT GUIDE RH (for RH Side)

HINT:

Use the same procedure as for the LH side.

5. REMOVE REAR SIDE SEATBACK COVER SUB-ASSEMBLY RH (for RH Side)

HINT:

Use the same procedure as for the LH side.

6. REMOVE REAR SEAT AIRBAG ASSEMBLY RH (for RH Side)

HINT:

Use the same procedure as for the LH side.

7. REMOVE REAR SEATBACK UPPER LOCK BEZEL (for LH Side)

(a) Disengage the 4 claws to remove the rear seatback upper lock bezel.

8. REMOVE SEPARATE TYPE REAR SEATBACK COVER WITH PAD (for LH Side)

(a) Open the 2 fasteners as shown in the illustration.

Fastener

(b) Disengage the 2 hooks.

Remove in this Direction

(d) Remove the separate type rear seatback cover with pad from the rear seatback frame sub-assembly LH as shown in the illustration.

Remove in this Direction

9. REMOVE SEPARATE TYPE REAR SEATBACK COVER (for LH Side)

(a) Remove the 6 hog rings.

Fastener

(b) Disengage the fastener and remove the separate type rear seatback cover from the separate type rear seatback pad.

10. REMOVE REAR SEATBACK HEATER ASSEMBLY (for LH Side)

Click here

11. REMOVE REAR SEAT CENTER ARMREST ASSEMBLY (for RH Side)

(a) Remove the bolt and bush.

(b) Disengage the pin and remove the rear seat center armrest assembly as shown in the illustration.

	Remove in this Direction (1)
	Remove in this Direction (2)

Remove in this Direction

12. REMOVE REAR SEATBACK HINGE COVER (for RH Side)

(a) Remove the rear seatback hinge cover as shown in the illustration.

Remove in this Direction

13. REMOVE REAR SEAT CENTER SHOULDER BELT GUIDE (for RH Side)

(a) Remove the 2 screws.

(b) Disengage the guide to remove the rear seat center shoulder belt guide.

14. REMOVE REAR SEATBACK UPPER LOCK BEZEL (for RH Side)

(a) Disengage the 4 claws to remove the rear seatback upper lock bezel.

15. REMOVE SEPARATE TYPE REAR SEATBACK COVER WITH PAD (for RH Side)

(a) Open the 2 fasteners as shown in the illustration.

Fastener

(b) Disengage the 4 hooks.

(d) Disengage the 2 claws and remove the 2 rear seat headrest supports as shown in the illustration.

Remove in this Direction

(e) Remove the separate type rear seatback cover with pad from the rear seatback frame sub-assembly RH as shown in the illustration.

Remove in this Direction

16. REMOVE SEPARATE TYPE REAR SEATBACK COVER (for RH Side)

(a) Disengage the 5 hooks.

(b) Remove the 6 hog rings.

Fastener

17. REMOVE REAR SEATBACK HEATER ASSEMBLY (for RH Side)

Click here

18. REMOVE CHILD RESTRAINT SEAT COVER

(a) Disengage the 2 claws and 2 guides to remove the child restraint seat cover as shown in the illustration.

Remove in this Direction

HINT:

Use the same procedure for all of the child restraint seat covers.

19. REMOVE CHILD RESTRAINT SEAT BASE COVER

(a) Remove the screw.

Remove in this Direction

(b) Disengage the claw and guide to remove the child restraint seat base cover as shown in the illustration.

HINT:

Use the same procedure for all of the child restraint seat base covers.

20. REMOVE BENCH TYPE REAR SEAT CUSHION COVER

(a) Disengage the 3 hooks.

(b) Disengage the 2 hooks.

(1) Remove the 23 hog rings.

(2) Disengage the 4 fasteners.

Fastener

(3) Remove the 22 hog rings.

Fastener

(4) Disengage the 2 fasteners to remove the bench type rear seat cushion cover from the rear seat cushion pad sub-assembly.

(d) for HV Model:

(1) Remove the 23 hog rings.

(2) Disengage the 4 fasteners.

Fastener

(3) Remove the 22 hog rings.

Fastener

(4) Disengage the 2 fasteners to remove the bench type rear seat cushion cover from the rear seat cushion pad sub-assembly.

21. REMOVE REAR SEAT CUSHION HEATER ASSEMBLY (w/ Seat Heater System)

Click here

Installation

INSTALLATION

CAUTION / NOTICE / HINT

CAUTION:

Wear protective gloves. Sharp areas on the parts may injure your hands.

PROCEDURE

1. INSTALL REAR SIDE SEATBACK ASSEMBLY LH

(a) Place the rear side seatback assembly LH in the cabin.

NOTICE:

Be careful not to damage the vehicle body.

(b) Engage the hook as shown in the illustration.

Install in this Direction

Torque:

18 N·m {184 kgf·cm, 13 ft·lbf}

(d) Connect the rear side seatback assembly LH connector.

(1) Before connecting the connector, check that the position of the housing lock is correct as shown in the illustration.

*a	Correct	*b	Incorrect
*c	Yellow CPA	-	-

(e) Connect the cable to the negative (-) auxiliary battery terminal.

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Click here

2. INSTALL REAR SIDE SEATBACK ASSEMBLY RH

HINT:

Use the same procedure as for the LH side.

3. INSTALL REAR SEATBACK ASSEMBLY RH

(a) Place the rear seatback assembly RH in the cabin.

NOTICE:

Be careful not to damage the vehicle body.

(b) Engage the 2 guides.

(d) Fully tighten the bolt (A), and then the bolt (B) to install the rear seatback assembly RH.

Torque:

36.8 N·m {375 kgf·cm, 27 ft·lbf}

(e) w/ Seat Heater System:

(1) Engage the clamp.

(f) Return the rear seatback assembly RH to its original position.

4. INSTALL REAR SEATBACK ASSEMBLY LH

(a) Place the rear seatback assembly LH in the cabin.

NOTICE:

Be careful not to damage the vehicle body.

(b) Engage the 2 guides.

(d) Fully tighten the bolt (A), and then the bolt (B) to install the rear seatback assembly LH.

Torque:

36.8 N·m {375 kgf·cm, 27 ft·lbf}

(e) w/ Seat Heater System:

(1) Engage the clamp.

(f) Return the rear seatback assembly LH to its original position.

5. INSTALL REAR SEAT CUSHION LOCK HOOK

(a) Engage the 2 claws to install a new rear seat cushion lock hook as shown in the illustration.

HINT:

Use the same procedure for the RH side and LH side.

Install in this Direction

6. INSTALL REAR SEAT CUSHION ASSEMBLY

(a) Place the rear seat cushion assembly in the cabin.

NOTICE:

Be careful not to damage the vehicle body.

(b) for Gasoline Model:

*a	Rear Seat Cushion Frame Hook (Front Side)
*b	Rear Seat Cushion Frame Hook (Rear Side)
	Install in this Direction (1)
	Install in this Direction (2)

(1) Engage the 2 rear seat cushion frame hooks on the rear side of the rear seat cushion assembly as shown in the illustration.

(2) Engage the 2 rear seat cushion frame hooks on the front side of the rear seat cushion assembly as shown in the illustration to install the rear seat cushion assembly.

NOTICE:

Confirm that the rear seat cushion assembly is securely installed.

(1) Engage the 2 rear seat cushion frame hooks on the rear side of the rear seat cushion assembly as shown in the illustration.

*a	Rear Seat Cushion Frame Hook (Front Side)
*b	Rear Seat Cushion Frame Hook (Rear Side)
	Install in this Direction (1)
	Install in this Direction (2)

(2) Engage the 2 rear seat cushion frame hooks on the front side of the rear seat cushion assembly as shown in the illustration to install the rear seat cushion assembly.

NOTICE:

Confirm that the rear seat cushion assembly is securely installed.

(d) w/ Seat Heater System (for LH Side):

(1) Connect the 2 connectors.

(2) Engage the 2 clamps.

(e) w/ Seat Heater System (for RH Side):

(1) Connect the 2 connectors.

(2) Engage the 2 clamps.

7. CONNECT REAR CENTER SEAT OUTER BELT ASSEMBLY

(a) Connect the rear center seat outer belt assembly as shown in the illustration.

8. INSTALL REAR SEAT HEADREST ASSEMBLY

(a) Install the 2 rear seat headrest assemblies.

9. CONNECT CABLE TO NEGATIVE AUXILIARY BATTERY TERMINAL

for A25A-FXS:

Click here

for 2GR-FKS:

Click here

10. INSTALL LUGGAGE COMPARTMENT INNER TRIM PAD (w/ Seat Heater System)

Click here

11. INSTALL SPARE WHEEL COVER ASSEMBLY (w/ Seat Heater System)

Click here

12. INSTALL LUGGAGE TRIM SERVICE HOLE COVER (for HV Model)

Click here

13. PERFORM DIAGNOSTIC SYSTEM CHECK

for HV Model:

Click here

for Gasoline Model:

Click here

14. INSPECT SRS WARNING LIGHT

for HV Model:

Click here

for Gasoline Model:

Click here

15. CHECK SEAT HEATER (w/ Seat Heater System)

for HV Model:

Click here

for Gasoline Model:

Click here

Reassembly

REASSEMBLY

CAUTION / NOTICE / HINT

CAUTION:

Wear protective gloves. Sharp areas on the parts may injure your hands.

PROCEDURE

1. INSTALL REAR SEAT CUSHION HEATER ASSEMBLY (w/ Seat Heater System)

Click here

2. INSTALL BENCH TYPE REAR SEAT CUSHION COVER

HINT:

When installing a bench type rear seat cushion cover, refer to Precaution in order to prevent wrinkles from forming.

Click here

(a) for Gasoline Model:

(1) Engage the 2 fasteners.

Fastener

(2) Using hog ring pliers, install 22 new hog rings in the order shown in the illustration.

NOTICE:

Be careful not to damage the bench type rear seat cushion cover.
Be sure to securely install the hog rings as shown in the illustration while preventing wrinkles from forming on the bench type rear seat cushion cover.

(3) Engage the 4 fasteners.

Fastener

(4) Using hog ring pliers, install 23 new hog rings in the order shown in the illustration.

NOTICE:

Be careful not to damage the bench type rear seat cushion cover.
Be sure to securely install the hog rings as shown in the illustration while preventing wrinkles from forming on the bench type rear seat cushion cover.

(b) for HV Model:

(1) Using hog ring pliers, install 22 new hog rings in the order shown in the illustration.

Fastener

(2) Using hog ring pliers, install 22 new hog rings.

NOTICE:

Be careful not to damage the bench type rear seat cushion cover.
Be sure to securely install the hog rings as shown in the illustration while preventing wrinkles from forming on the bench type rear seat cushion cover.

(3) Engage the 4 fasteners.

Fastener

(4) Using hog ring pliers, install 23 new hog rings in the order shown in the illustration.

NOTICE:

Be careful not to damage the bench type rear seat cushion cover.
Be sure to securely install the hog rings as shown in the illustration while preventing wrinkles from forming on the bench type rear seat cushion cover.

(d) Engage the 3 hooks to install the bench type rear seat cushion cover to the rear seat cushion pad sub-assembly.

3. INSTALL CHILD RESTRAINT SEAT BASE COVER

(a) Engage the guide and claw as shown in the illustration.

Install in this Direction

(b) Install the child restraint seat base cover with the screw.

HINT:

Use the same procedure for all child restraint seat base covers.

4. INSTALL CHILD RESTRAINT SEAT COVER

(a) Engage the 2 guides and 2 claws to install the child restraint seat cover as shown in the illustration.

Install in this Direction

HINT:

Use the same procedure for all child restraint seat covers.

5. INSTALL REAR SEATBACK HEATER ASSEMBLY (for RH Side)

Click here

6. INSTALL SEPARATE TYPE REAR SEATBACK COVER (for RH Side)

HINT:

When installing a separate type rear seatback cover, refer to Precaution in order to prevent wrinkles from forming.

Click here

(a) Engage the fastener.

Fastener

(b) Using hog ring pliers, install 6 new hog rings in the order shown in the illustration.

NOTICE:

Be careful not to damage the separate type rear seatback cover.
Be sure to securely install the hog rings as shown in the illustration while preventing wrinkles from forming on the separate type rear seatback cover.

NOTICE:

Be careful not to damage the separate type rear seatback cover.

7. INSTALL SEPARATE TYPE REAR SEATBACK COVER WITH PAD (for RH Side)

(a) Install the separate type rear seatback cover with pad to the rear seatback frame sub-assembly RH as shown in the illustration.

Install in this Direction

(b) Engage the 2 claws to install the 2 rear seat headrest supports as shown in the illustration.

Install in this Direction

NOTICE:

Be careful not to damage the separate type rear seatback cover.
Be sure to securely install the hog rings as shown in the illustration while preventing wrinkles from forming on the separate type rear seatback cover.

(d) Engage the 4 hooks.

(e) Close the 2 fasteners as shown in the illustration.

Fastener

8. INSTALL REAR SEATBACK UPPER LOCK BEZEL (for RH Side)

(a) Engage the 4 claws to install a new rear seatback upper lock bezel.

9. INSTALL REAR SEAT CENTER SHOULDER BELT GUIDE (for RH Side)

(a) Engage the guide.

(b) Install the rear seat center shoulder belt guide with the 2 screws.

10. INSTALL REAR SEATBACK HINGE COVER (for RH Side)

(a) Install the rear seatback hinge cover as shown in the illustration.

Install in this Direction

11. INSTALL REAR SEAT CENTER ARMREST ASSEMBLY (for RH Side)

(a) Install the bush as shown in the illustration.

Install in this Direction

(b) Engage the pin and temporarily install the rear seat center armrest assembly as shown in the illustration.

	Install in this Direction (1)
	Install in this Direction (2)

Torque:

7.0 N·m {71 kgf·cm, 62 in·lbf}

12. INSTALL REAR SEATBACK HEATER ASSEMBLY (for LH Side)

Click here

13. INSTALL SEPARATE TYPE REAR SEATBACK COVER (for LH Side)

HINT:

When installing a separate type rear seatback cover, refer to Precaution in order to prevent wrinkles from forming.

Click here

(a) Engage the fastener.

Fastener

(b) Using hog ring pliers, install the separate type rear seatback cover to the separate type rear seatback pad with 6 new hog rings in the order shown in the illustration.

NOTICE:

Be careful not to damage the separate type rear seatback cover.
Be sure to securely install the hog rings as shown in the illustration while preventing wrinkles from forming on the separate type rear seatback cover.

14. INSTALL SEPARATE TYPE REAR SEATBACK COVER WITH PAD (for LH Side)

(a) Install the separate type rear seatback cover with pad to the rear seatback frame sub-assembly LH as shown in the illustration.

Install in this Direction

(b) Engage the 2 claws to install the 2 rear seat headrest supports as shown in the illustration.

Install in this Direction

(d) Close the 2 fasteners as shown in the illustration.

Fastener

15. INSTALL REAR SEATBACK UPPER LOCK BEZEL (for LH Side)

(a) Engage the 4 claws to install a new rear seatback upper lock bezel.

16. INSTALL REAR SEAT AIRBAG ASSEMBLY LH (for LH Side)

Click here

17. INSTALL REAR SIDE SEATBACK COVER SUB-ASSEMBLY LH (for LH Side)

(a) Install the rear side seatback cover sub-assembly LH to the rear side seatback frame sub-assembly LH as shown in the illustration.

Install in this Direction

(b) Engage the 14 hooks.

Torque:

8.0 N·m {82 kgf·cm, 71 in·lbf}

18. INSTALL REAR SEAT SHOULDER BELT GUIDE LH (for LH Side)

(a) Engage the guide.

(b) Install the rear seat shoulder belt guide LH with the 2 screws.

19. INSTALL REAR SEAT AIRBAG ASSEMBLY RH (for RH Side)

HINT:

Use the same procedure as for the LH side.

20. INSTALL REAR SIDE SEATBACK COVER SUB-ASSEMBLY RH (for RH Side)

HINT:

Use the same procedure as for the LH side.

21. INSTALL REAR SEAT SHOULDER BELT GUIDE RH (for RH Side)

HINT:

Use the same procedure as for the LH side.

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 rear seat assembly removal/installation are shown below.

Necessary Procedure After Parts Removed/Installed/Replaced (for Gasoline Model)

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function When Necessary Procedures are not Performed
*: When performing learning using the Techstream. Click here
Disconnect cable from negative battery terminal	Perform steering sensor zero point calibration	Lane departure alert system (w/ Steering Control)
		Pre-collision system
		Intelligent clearance sonar system*
		Lighting system (for Gasoline Model with Cornering Light)
	Memorize steering angle neutral point	Parking assist monitor system
	Memorize steering angle neutral point	Panoramic view monitor system

CAUTION:

Wear protective gloves. Sharp areas on the parts may injure your hands.
Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing.
Click here

Necessary Procedure After Parts Removed/Installed/Replaced (for HV Model)

Replaced Part or Performed Procedure	Necessary Procedure	Effect/Inoperative Function When Necessary Procedures are not Performed
*: When performing learning using the Techstream. Click here
Disconnect cable from negative auxiliary battery terminal	Perform steering sensor zero point calibration	Lane departure alert system (w/ Steering Control)
		Pre-collision system
		Intelligent clearance sonar system*
		Lighting system (for HV Model with Cornering Light)
	Memorize steering angle neutral point	Parking assist monitor system
	Memorize steering angle neutral point	Panoramic view monitor system

CAUTION:

Wear protective gloves. Sharp areas on the parts may injure your hands.
Some of these service operations affect the SRS airbag system. Read the precautionary notices concerning the SRS airbag system before servicing.
Click here

PROCEDURE

1. PRECAUTION

NOTICE:

After turning the engine switch (for Gasoline Model) or power switch (for HV Model) off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work.

Click here

2. REMOVE LUGGAGE TRIM SERVICE HOLE COVER (for HV Model)

Click here

3. REMOVE SPARE WHEEL COVER ASSEMBLY (w/ Seat Heater System)

Click here

4. REMOVE LUGGAGE COMPARTMENT INNER TRIM PAD (w/ Seat Heater System)

Click here

5. DISCONNECT CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL

for A25A-FXS:

Click here

for 2GR-FKS:

Click here

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.
If an airbag deploys for any reason, it may cause a serious injury.

6. REMOVE REAR SEAT HEADREST ASSEMBLY

(a) Remove the 2 rear seat headrest assemblies.

7. DISCONNECT REAR CENTER SEAT OUTER BELT ASSEMBLY

(a) Using a screwdriver with its tip wrapped with protective tape, disconnect the rear center seat outer belt assembly as shown in the illustration.

*a	Protective Tape
	Insert Screwdriver Here

8. REMOVE REAR SEAT CUSHION ASSEMBLY

(a) w/ Seat Heater System (for LH Side):

(1) Disconnect the 2 connectors.

(2) Disengage the 2 clamps.

(b) w/ Seat Heater System (for RH Side):

(1) Disconnect the 2 connectors.

(2) Disengage the 2 clamps.

(1) Lift the front edge of the rear seat cushion assembly as shown in the illustration and disengage the 2 rear seat cushion frame hooks on the front side of the rear seat cushion assembly from the rear seat cushion lock hooks.

*a	Rear Seat Cushion Frame Hook (Front Side)
*b	Rear Seat Cushion Frame Hook (Rear Side)
	Remove in this Direction (1)
	Remove in this Direction (2)

NOTICE:

Be sure to hold the parts of the seat cushion assembly directly next to the rear seat cushion frame hooks when lifting it. Lifting a different part of the cushion may deform the rear seat cushion frame.

HINT:

When lifting the rear seat cushion assembly, make sure to hold the area shown in the illustration.

(2) Disengage the 2 rear seat cushion frame hooks on the rear side of the rear seat cushion assembly as shown in the illustration and remove the rear seat cushion assembly.

NOTICE:

Be careful not to damage the vehicle body.

(d) for HV Model:

NOTICE:

*a	Rear Seat Cushion Frame Hook (Front Side)
*b	Rear Seat Cushion Frame Hook (Rear Side)
	Remove in this Direction (1)
	Remove in this Direction (2)

HINT:

When lifting the rear seat cushion assembly, make sure to hold the area shown in the illustration.

(2) Disengage the 2 rear seat cushion frame hooks on the rear side of the rear seat cushion assembly as shown in the illustration and remove the rear seat cushion assembly.

NOTICE:

Be careful not to damage the vehicle body.

9. REMOVE REAR SEAT CUSHION LOCK HOOK

(a) Disengage the 2 claws to remove the rear seat cushion lock hook as shown in the illustration.

Remove in this Direction

HINT:

Use the same procedure for the RH side and LH side.

10. REMOVE REAR SEATBACK ASSEMBLY LH

(a) Fold the rear seatback assembly LH forward.

(b) w/ Seat Heater System:

(1) Disengage the clamp.

Fastener

(d) Remove the 2 bolts.

(e) Disengage the 2 guides and remove the rear seatback assembly LH.

NOTICE:

Be careful not to damage the vehicle body.

11. REMOVE REAR SEATBACK ASSEMBLY RH

(a) Fold the rear seatback assembly RH forward.

(b) w/ Seat Heater System:

(1) Disengage the clamp.

Fastener

(d) Remove the 2 bolts.

(e) Disengage the 2 guides and remove the rear seatback assembly RH.

NOTICE:

Be careful not to damage the vehicle body.

12. REMOVE REAR SIDE SEATBACK ASSEMBLY LH

(a) Disconnect the cable from the negative (-) auxiliary battery terminal.

CAUTION:

Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

NOTICE:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

Click here

(b) Disconnect the rear side seatback assembly LH connector.

NOTICE:

When disconnecting any airbag connector, take care not to damage the airbag wire harness.

(1) Push down the white housing lock and slide the yellow CPA. (At this time, the connector cannot be disconnected yet.)

*a	White Housing Lock
*b	Yellow CPA
	Slide

(2) Push down the white housing lock again and disconnect the connector.

NOTICE:

Do not push down the part (A) shown in the illustration when disconnecting the connector.

Remove in this Direction

(d) Disengage the hook and remove the rear side seatback assembly LH as shown in the illustration.

NOTICE:

Be careful not to damage the vehicle body.

13. REMOVE REAR SIDE SEATBACK ASSEMBLY RH

HINT:

Use the same procedure as for the LH side.

Power Seat Switch

Rear Seat Cushion Heater

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Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Hybrid Control System: Vehicle Control History
VEHICLE CONTROL HISTORY CHECK VEHICLE CONTROL HISTORY (HYBRID CONTROL SYSTEM) (a) Connect the Techstream to the DLC3. (b) Turn the power switch on (IG). (c) Turn the Techstream on. (d) Enter the following menus: Powertrain / Hybrid Control / Utility / Vehicle Control History (RoB). Powertrain > H ...