IS350 AWD/IS350/IS300 AWD- Page 356

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7-2. Steps to take in an emergency

6

Open and close any of the doors of 
your vehicle with the engine switch 
off.

7

Maintain the engine speed of the 
second vehicle and start the engine 
of your vehicle by turning the 
engine switch to IGNITION ON 
mode.

8

Once the vehicle’s engine has 
started, remove the jumper cables 
in the exact reverse order from 
which they were connected.

Once the engine starts, have the vehi-
cle inspected at your Lexus dealer as 
soon as possible.

■

Starting the engine when the battery is 

discharged

The engine cannot be started by push-start-

ing.

■

To prevent battery discharge

●

Turn off the headlights and the audio sys-

tem while the engine is off.

●

Turn off any unnecessary electrical com-

ponents when the vehicle is running at a 

low speed for an extended period, such 

as in heavy traffic.

■

Charging the battery

The electricity stored in the battery will dis-

charge gradually even when the vehicle is 

not in use, due to natural discharge and the 

draining effects of certain electrical appli-

ances. If the vehicle is left for a long time, 

the battery may discharge, and the engine 

may be unable to start. (The battery 

recharges automatically during driving.)

■

When recharging or replacing the bat-

tery

●

In some cases, it may not be possible to 

unlock the doors using the smart access 

system with push-button start when the 

battery is discharged. Use the wireless 

remote control or the mechanical key to 

lock or unlock the doors.

●

The engine may not start on the first 

attempt after the battery has recharged 

but will start normally after the second 

attempt. This is not a malfunction.

●

The engine switch mode is memorized by 

the vehicle. When the battery is recon-

nected, the system will return to the 

mode it was in before the battery was dis-

charged. Before disconnecting the bat-

tery, turn the engine switch off. If you are 

unsure what mode the engine switch was 

in before the battery discharged, be 

especially careful when reconnecting the 

battery.

WARNING

■

Avoiding battery fires or explosions

Observe the following precautions to 

prevent accidentally igniting the flamma-

ble gas that may be emitted from the bat-

tery:

●

Make sure each jumper cable is con-

nected to the correct terminal and that 

it is not unintentionally in contact with 

any other than the intended terminal.

●

Do not allow the other end of the 

jumper cable connected to the “+” ter-

minal to come into contact with any 

other parts or metal surfaces in the 

area, such as brackets or unpainted 

metal.

●

Do not allow the + and - clamps of the 

jumper cables to come into contact 

with each other.

●

Do not smoke, use matches, cigarette 

lighters or allow open flame near the 

battery.

■

Battery precautions

The battery contains poisonous and cor-

rosive acidic electrolyte, while related 

parts contain lead and lead compounds. 

Observe the following precautions when 

handling the battery: