Toyota Highlander Service Manual page 641

Start the engine of the second vehicle. Increase the engine speed
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slightly and maintain at that level for approximately 5 minutes to
recharge the battery of your vehicle.
Vehicles with a smart key system: Open and close any of the doors
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of your vehicle with the engine switch off.
Vehicles without a smart key system:
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Maintain the engine speed of the second vehicle and turn the
engine switch to the "ON" position, then start the vehicle's engine.
Vehicles with a smart key system:
Maintain the engine speed of the second vehicle and turn the
engine switch to IGNITION ON mode, then start the vehicle's
engine.
Once the vehicle's engine has started, remove the jumper cables in
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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.
HIGHLANDER_U (OM0E017U)
8-2. Steps to take in an emergency
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