Lexus NX 300h 2016 Owner's Manual page 595

Remove the engine cover.
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Connect the jumper cables according to the following procedure:
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Connect a positive jumper cable clamp to the exclusive jump starting ter-
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minal on your vehicle.
Connect the clamp on the other end of the positive cable to the positive (+)
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battery terminal on the second vehicle.
Connect a negative cable clamp to the negative (-) battery terminal on the
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second vehicle.
Connect the clamp at the other end of the negative cable to a solid, station-
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ary, unpainted metallic point away from the exclusive jump starting terminal
and any moving parts, as shown in the illustration.
NX300h_OM_USA_OM78082U
8-2. Steps to take in an emergency
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