Mazda CX-9 2019, Owner'S Manual, Page: 584 / 696

Route the jumper cables away from parts that will be moving:
Connecting a jumper cable near or to moving parts (cooling fans, belts) is dangerous. The
cable could get caught when the engine starts and cause serious injury.
CAUTION
Use only a 12 V booster system. You can damage a 12 V starter, ignition system, and other
electrical parts beyond repair with a 24 V power supply (two 12 V batteries in series or a 24 V
motor generator set).
Connect cables in numerical order and disconnect in reverse order.
Jumper cables
Booster battery
Discharged battery
1. Remove the battery cover.
2. Make sure the booster battery is 12 V
and that its negative terminal is
grounded.
3. If the booster battery is in another
vehicle, do not allow both vehicles to
touch. Turn off the engine of the
vehicle with the booster battery and all
unnecessary electrical loads in both
vehicles.
4. Connect the jumper cables in the exact
sequence as in the illustration.

Connect one end of a cable to the
positive terminal on the discharged
battery (1).

Attach the other end to the positive
terminal on the booster battery (2).
If Trouble Arises
Battery Runs Out
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CX-9_8HB2-EA-18G_Edition4_old 2019-3-15 13:53:31