Last Modified: 08-21-2023 6.11:8.1.0 Doc ID: RM100000001PZ6P
Model Year Start: 2021 Model: Avalon HV Prod Date Range: [08/2020 -           ]
Title: HYBRID / BATTERY CONTROL: HV BATTERY (for LITHIUM-ION BATTERY): INSTALLATION; 2021 - 2022 MY Avalon HV [08/2020 -        ]

INSTALLATION

PROCEDURE

1. TEMPORARILY INSTALL NO. 4 HV BATTERY END PLATE SUB-ASSEMBLY

CAUTION:

Be sure to wear insulated gloves.

(a) Temporarily install the No. 4 HV battery end plate sub-assembly to the HV battery with the 2 bolts and 2 nuts.

(b) Fully tighten the 2 nuts.

Torque:

19 N·m {194 kgf·cm, 14 ft·lbf}

2. INSTALL NO. 5 HV BATTERY END PLATE SUB-ASSEMBLY

CAUTION:

Be sure to wear insulated gloves.

(a) Install the No. 5 HV battery end plate sub-assembly to the HV battery with the 12 nuts.

Torque:

19 N·m {194 kgf·cm, 14 ft·lbf}

3. INSTALL NO. 4 HV BATTERY SHIELD SUB-ASSEMBLY

CAUTION:

Be sure to wear insulated gloves.

(a) Install the No. 4 HV battery shield sub-assembly to the HV battery with the 4 nuts.

Torque:

19 N·m {194 kgf·cm, 14 ft·lbf}

4. INSTALL NO. 3 HV BATTERY SHIELD SUB-ASSEMBLY

CAUTION:

Be sure to wear insulated gloves.

(a) Install the No. 3 HV battery shield sub-assembly to the HV battery with the 4 nuts.

Torque:

19 N·m {194 kgf·cm, 14 ft·lbf}

5. INSTALL NO. 4 HV BATTERY END PLATE SUB-ASSEMBLY

CAUTION:

Be sure to wear insulated gloves.

(a) Fully tighten the 2 bolts.

Torque:

19 N·m {194 kgf·cm, 14 ft·lbf}

6. INSTALL HV BATTERY

CAUTION:

Be sure to wear insulated gloves.

(a) Install the HV battery to the vehicle body with the 3 bolts (A), bolt (B) and bolt (C).

Torque:

19 N·m {194 kgf·cm, 14 ft·lbf}

NOTICE:

  • Do not allow foreign matter, such as grease or oil, to adhere to the bolts of the HV battery.
  • To prevent the wire harness from being caught, make sure to bundle the wire harness using insulating tape or equivalent.
  • Use cardboard or another similar material to protect the HV battery and vehicle body from damage.
  • Since the HV battery is very heavy, 2 people are needed to install it. When installing the HV battery, be careful not to damage the parts around it.
  • When removing/installing/moving the HV battery, make sure not to tilt it more than 80°.
  • While lowering the HV battery into the vehicle, do not allow it to contact the vehicle.
  • As bolts with 3 different lengths are used, make sure to install each bolt to the correct position.
  • If the HV battery has been struck or dropped, replace it.

*a

Bolt (A)

(Bolt Length: 25 mm (0.984 in.))

*b

Bolt (B)

(Bolt Length: 24 mm (0.945 in.))

*c

Bolt (C)

(Bolt Length: 65 mm (2.559 in.))

7. CONNECT FLOOR WIRE

CAUTION:

Be sure to wear insulated gloves.

(a) Connect the HV battery connector.

(b) Engage the clamp.

8. INSTALL NO. 4 HV BATTERY PROTECTOR

CAUTION:

Be sure to wear insulated gloves.

(a) Engage the clamp to install the No. 4 HV battery protector to the HV battery.

9. CONNECT FLOOR WIRE

CAUTION:

Be sure to wear insulated gloves.

(a) Engage the 2 clamps to install the floor wire to the HV battery.

10. INSTALL NO. 1 INDOOR ELECTRICAL KEY ANTENNA ASSEMBLY

Click here 2021 - 2022 MY Avalon Avalon HV [08/2020 -        ]; THEFT DETERRENT / KEYLESS ENTRY: ELECTRICAL KEY OSCILLATOR (for Rear Floor): INSTALLATION+

11. INSTALL HYBRID BATTERY HOSE ASSEMBLY

(a) Engage the 2 claws to install the hybrid battery hose assembly to the HV battery.

(b) Connect the hybrid battery hose assembly to the vehicle.

12. CONNECT FLOOR WIRE

CAUTION:

Be sure to wear insulated gloves.

(a) Connect the HV battery junction block assembly connector.

(b) Connect the electric vehicle battery plug assembly connector.

(c) Engage the clamp.

13. CONNECT FLOOR UNDER WIRE

CAUTION:

Be sure to wear insulated gloves.

(a) Connect the floor wire connector.

(b) Connect the shield ground to the HV battery.

(c) Connect the 2 HV battery junction block assembly connectors.

NOTICE:

Make sure that the connectors are connected securely.

14. INSTALL NO. 1 HV BATTERY COVER PANEL RH

CAUTION:

Be sure to wear insulated gloves.

(a) Install the No. 1 HV battery cover panel RH to the HV battery with the 3 bolts and 3 nuts.

Torque:

7.5 N·m {76 kgf·cm, 66 in·lbf}

*1

Battery Cover Lock Striker

*a

Button

*b

Push

(b) Install the battery cover lock striker, then push the button to lock it.

15. INSTALL BATTERY COOLING BLOWER ASSEMBLY

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; HYBRID / BATTERY CONTROL: BATTERY BLOWER: INSTALLATION

16. INSTALL SERVICE PLUG GRIP

Click here 2019 - 2022 MY Avalon HV [04/2018 -        ]; HYBRID / BATTERY CONTROL: SERVICE PLUG GRIP: INSTALLATION

17. PERFORM INITIALIZATION

Click here 2021 MY Avalon Avalon HV [08/2020 - 08/2021]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION 2022 MY Avalon Avalon HV [08/2021 -        ]; INTRODUCTION: REPAIR INSTRUCTION: INITIALIZATION