If The Vehicle 12-Volt Battery Is Discharged (Rx350) - Lexus 2012 RX450h Owner's Manual

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5-2. Steps to take in an emergency

If the vehicle 12-volt battery is discharged (RX350)

The following procedures may be used to start the engine if the vehicle's

12-volt battery is discharged.

You can also call your Lexus dealer or a qualified repair shop.

If you have a set of jumper (or booster) cables and a second vehicle

with a 12-volt battery, you can jump start your vehicle by following the

steps below.

Open the hood. Remove the 12-volt battery cover. (P. 749)

Connect the jumper cables according to the following procedure:

Connect a positive jumper cable clamp to the positive (+) battery

terminal on your vehicle

Connect a positive jumper cable clamp to the positive (+) battery

terminal on the second vehicle

Connect a negative cable clamp to the negative (-) battery terminal

on the second vehicle

Connect the clamp at the other end of the negative cable to a solid,

stationary, unpainted metallic point away from the 12-volt battery

and any moving parts, as shown in the illustration.