Lexus RX350 2023 Manual page 517

When removing the battery terminals
■
● When the battery terminals are removed,
the information stored in the ECU is
cleared. Before removing the battery ter-
minals, contact your Lexus dealer.
● If a battery terminal is disconnected, the
doors will not be able to be opened using
the door opener switches and the elec-
tronic key may become trapped in the
vehicle
To prevent the electronic key (mechanical
key) from being locked inside the vehicle,
make sure to remove it from the vehicle
before disconnecting a battery terminal.
● If the electronic key (mechanical key) is
to be left in the vehicle, make sure to
open a window so an inside manual
release handle can be operated.
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
7-2. Steps to take in an emergency
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 dis-
charged, be especially careful when
reconnecting the battery.
If the battery discharges, it may not be
●
possible to shift the shift position to other
positions. In this case, the vehicle cannnot
be towed without lifting both front wheels
because the front wheels will be locked.
● Some systems may require initialization.
(P.559)
The Stop & Start system may not auto-
●
matically stop the engine for up to an
hour.
■ When replacing the battery
Use a genuine battery specifically
●
designed for use with the Stop & Start
system or a battery with equivalent speci-
fications to a genuine battery. If an unsup-
ported battery is used, Stop & Start
system functions may be restricted to
protect the battery. Also, battery perfor-
mance may decrease and the engine may
not be able to restart. Contact your Lexus
dealer for details.
● Use a battery that the case size is same as
the previous one (LN3), 20 hour rate
capacity (20HR) is equivalent (65Ah) or
greater, and performance rating (CCA)
is equivalent (603A) or greater.
• If the sizes differ, the battery cannot be
properly secured.
• 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 the engine may not be able to
start.
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