Toyota Highlander Hybrid 2017 Owner's Manual page 627

Remove the engine cover.
4
Connect the jumper cables according to the following procedure:
5
Connect a positive jumper cable clamp to the exclusive jump
1
starting terminal on your vehicle.
Connect the clamp on the other end of the positive cable to the
2
positive (+) battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery termi-
3
nal on the second vehicle.
Connect the clamp at the other end of the negative cable to a
4
solid, stationary, unpainted metallic point away from the exclusive
jump starting terminal and any moving parts, as shown in the
illustration.
Start the engine of the second vehicle. Increase the engine speed
6
slightly and maintain at that level for approximately 5 minutes to
recharge the 12-volt battery of your vehicle.
HIGHLANDER_HV_U (OM48F12U)
8-2. Steps to take in an emergency
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