547
7-2. Steps to take in an emergency
7
When trouble arises
● Some systems may require initialization.
(P.587)
■ When removing the battery terminals
When the battery terminals are removed,
the information stored in the ECU is
cleared. Before removing the battery termi-
nals, contact your Lexus dealer.
■ 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.
■ Replacing the battery
● Use a battery that conforms to European
regulations.
●
Use a battery that the case size is same as
the previous one (LN4), 20 hours rate
capacity (20HR) is equivalent (80Ah) or
greater, and performance rating (CCA)
is equivalent (689A) or greater.
• If the sizes differ, the battery cannot be
properly secured.
• If an improper battery is used, battery
performance may decrease and the
engine may not be able to restart.
• If the 20 hour rate capacity is low, even if
the time period where the vehicle is not
used is a short time, the battery may dis-
charge and engine may not be able to
start.
● For details, consult your Lexus dealer.
■ When removing the battery termi-
nals
Always remove the negative (-) terminal
first. If the positive (+) terminal contacts
any metal in the surrounding area when
the positive (+) terminal is removed, a
spark may occur, leading to a fire in addi-
tion to electrical shocks and death or
serious injury.
■ 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.
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