Depleted Lead-acid Battery

The lead-acid battery might be depleted if the following conditions occur.

The EV system does not start.
The selector lever cannot be shifted to a position other than P.
The horn sound is weak or it does not sound.
The brightness of the lights is extremely low.

Jump-starting is dangerous if done incorrectly. So follow the procedure carefully. If you feel unsure about jump-starting, we strongly recommend that you have a competent service technician do the work.

Using commercially available booster cables, connect the lead-acid battery of the booster vehicle’s battery to the lead-acid battery of your vehicle and start the EV system.

Follow These Precautions Carefully:

To ensure safe and correct handling of the lead-acid battery, read the following precautions carefully before using the lead-acid battery or inspecting it.

Keep flames and sparks away from open lead-acid battery cells and do not allow metal tools to contact the positive (+) or negative (–) terminal of the lead-acid battery when working near a lead-acid battery. Do not allow the positive (+) terminal to contact the vehicle body:

Flames and sparks near open lead-acid battery cells are dangerous. Hydrogen gas, produced during normal lead-acid battery operation, could ignite and cause the lead-acid battery to explode. An exploding lead-acid battery can cause serious burns and injuries. Keep all flames including cigarettes and sparks away from open lead-acid battery cells.

Keep all flames and sparks away from open lead-acid battery cells because hydrogen gas is produced from open lead-acid battery cells while charging the lead-acid battery or adding lead-acid battery fluid:

Do not jump-start a frozen lead-acid battery or one with a low fluid level:

Jump-starting a frozen lead-acid battery or one with a low fluid level is dangerous. It may rupture or explode, causing serious injury.

Connect the negative cable to a good ground point away from the lead-acid battery:

Connecting the end of the second jumper cable to the negative (–) terminal of the depleted lead-acid battery is dangerous.

A spark could cause the gas around the lead-acid battery to explode and injure someone.

Route the jumper cables away from parts that will be moving:

Connecting a jumper cable near or to moving part (cooling fans) is dangerous. The cable could get caught when the EV system starts and cause serious injury.

Close Warning

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Connect the booster cables with extreme care.
Do not jump-start the vehicle with the charging cable connected to your vehicle. Otherwise, the vehicle could be damaged.
Do not use your vehicle as a booster vehicle.

Close Caution

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If your lead-acid battery is depleted, make sure that the booster vehicle's battery is a lead-acid battery.

Close Note

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Move the booster vehicle so that its lead-acid battery is as close as possible to your vehicle's lead-acid battery.
Make sure that the power switch is switched OFF.
Remove the lead-acid battery cover.
Turn off the booster vehicle's engine and connect the jumper cables in the following order.

Make sure that the jumper cables are securely connected so that they do not disconnect due to the vibrations.

1st lead

Positive (+) terminal on the depleted lead-acid battery

Positive (+) terminal on booster vehicle's battery

2nd lead

Negative (-) terminal on booster vehicle's battery

Location shown in the figure (do not connect to the negative (-) terminal of the lead-acid battery)
Start the booster vehicle's engine and rev the engine.
Start the EV system of your vehicle.
Disconnect the booster cables in the reverse order of their connection after the EV system is started.
Install the lead-acid battery cover.
Have your vehicle inspected by an Authorized Mazda Dealer as soon as possible.

Depleted Lead-acid Battery

Jump-Starting

Jump-Starting