2022 Toyota Avalon Owners Manual - If the vehicle battery is discharged

If the vehicle battery is discharged

The following procedures may be used to start the engine if the vehicle's battery is discharged.

You can also call your Toyota dealer or a qualified repair shop.

If you have a set of jumper (or booster) cables and a second vehicle with a 12-volt battery, you can jump start your vehicle by following the steps below.

1. Confirm that the electronic key is being carried.

When connecting the jumper (or booster) cables, depending on the situation, the alarm may activate and doors locked.

2. Open the hood.

3. Remove the engine cover.

Make sure to pull the engine cover straight up when removing it.

4. Connect the jumper cables according to the following procedure:

1. Connect a positive jumper cable clamp to the positive (+) battery terminal on your vehicle.
2. Connect the clamp on the other end of the positive cable to the positive (+) battery terminal on the second vehicle.
3. Connect a negative cable clamp to the negative (-) battery terminal on the second vehicle.
4. Connect the clamp at the other end of the negative cable to a solid, stationary, unpainted metallic point away from the battery and any moving parts, as shown in the illustration.

5. Start the engine of the second vehicle. Increase the engine speed slightly and maintain at that level for approximately 5 minutes to recharge the battery of your vehicle.

6. Open and close any of the doors of your vehicle with the engine switch off.

7. Maintain the engine speed of the second vehicle and turn the engine switch to IGNITION ON mode, then start the vehicle's engine.

8. Once the vehicle's engine has started, remove the jumper cables in the exact reverse order from which they were connected.

Once the engine starts, have the vehicle inspected at your Toyota dealer as soon as possible.

■Starting the engine when the battery is discharged The engine cannot be started by push-starting.

■To prevent battery discharge

• Turn off the headlights and the audio system while the engine is off.
• Turn off any unnecessary electrical components when the vehicle is running at a low speed for an extended period, such as in heavy traffic.

■When the battery is removed or discharged

• Information stored in the ECU is cleared. When the battery is depleted, have the vehicle inspected at your Toyota dealer.
• Some systems may require initialization.

■When removing the battery terminals When the battery terminals are removed, the information stored in the ECU is cleared. Before removing the battery terminals, contact your Toyota dealer.

■Charging the battery The electricity stored in the battery will discharge gradually even when the vehicle is not in use, due to natural discharge and the draining effects of certain electrical appliances. If the vehicle is left for a long time, the battery may discharge, and the engine may be unable to start. (The battery recharges automatically during driving.)

■When recharging or replacing the battery

• In some cases, it may not be possible to unlock the doors using the smart key system when the battery is discharged. Use the wireless remote control or the mechanical key to lock or unlock the doors.
• The engine may not start on the first attempt after the battery has recharged but will start normally after the second attempt. This is not a malfunction.
• The engine switch mode is memorized by the vehicle. When the battery is reconnected, the system will return to the mode it was in before the battery was discharged. Before disconnecting the battery, turn the engine switch off.

   

  If you are unsure what mode the engine switch was in before the battery discharged, be especially careful when reconnecting the battery.

■When replacing the battery

• Use a battery that conforms to European regulations.
• Use a battery that the case size is same as the previous one (LN3), 20 hour rate capacity (20HR) is equivalent (70Ah) or greater, and performance rating (CCA) is equivalent (603A) or greater.
  • If the sizes differ, the battery cannot be properly secured.
  • If the 20 hour rate capacity is low, even if the time period where the vehicle is not used is a short time, the battery may discharge and the engine may not be able to start.
• For details, consult your Toyota dealer.