2021 Lexus LC500C battery

2746-3. Do-it-yourself maintenance
Fuse box (P.299)
Engine oil level dipstick ( P.274)
Engine coolant reservoir ( P.276)
Engine oil filler cap ( P.275)
Brake fluid reservoir ( P.277)
Washer fluid tank ( P.278)
Electric cooling fan
Condenser ( P.277)
Radiator ( P.277)
■Battery
 P.279
With the engine at operating tempera-
ture and turned off, check the oil level
on the dipstick.
Engine compartment
Components
A
B
C
D
E
F
G
H
I
Checking and adding the engine
oil

2796-3. Do-it-yourself maintenance
6
Maintenance and care
The battery is located in the trunk.
■Before recharging
When recharging, the battery produces
hydrogen gas which is flammable and
explosive. Therefore, observe the following
precautions before recharging:
●If recharging with the battery installed on
the vehicle, be sure to disconnect the
ground cable.
●Make sure the power switch on the char-
ger is off when connecting and discon-
necting the charger cables to the battery.
■After recharging/reconnecting the bat-
tery
●Unlocking the doors using the smart
access system with pu sh-button start may
not be possible immediately after recon-
necting the battery. If this happens, use
the wireless remote control or the
mechanical key to lock/unlock the doors.
●Start the engine with the engine switch in
ACC. The engine may not start with the
engine switch turned off. However, the
engine will operate normally from the
second attempt.
●The engine switch mode is recorded by
the vehicle. If the battery is reconnected,
the vehicle will return the engine switch
mode to the status it was in before the
battery was disconnected. Make sure to
turn off the engine switch before discon-
nect the battery. Take extra care when connecting the battery if the engine
switch mode prior to discharge is
unknown.
If the engine will not st art even after multiple
attempts at all methods above, contact your
Lexus dealer.
Battery
Location
WARNING
■Chemicals in the battery
The battery contains poisonous and cor-
rosive sulfuric acid and may produce
hydrogen gas which is flammable and
explosive. To reduce the risk of death or
serious injury, take the following precau-
tions while working on or near the bat-
tery:
●Do not cause sparks by touching the
battery terminals with tools.
●Do not smoke or light a match near the
battery.
●Avoid contact with eyes, skin and
clothes.
●Never inhale or swallow electrolyte.
●Wear protective sa fety glasses when
working near the battery.
●Keep children away from the battery.
■Where to safely charge the battery
Always charge the battery in an open
area. Do not charge the battery in a
garage or closed room where there is
insufficient ventilation.
■How to recharge the battery
Recharge at a current of 5 A or less and
make sure that the recharging period
does not exceed a total of 12 hours.

2806-3. Do-it-yourself maintenance
Pull the strap upwards to lift up the lug-
gage mat.Make sure that the battery terminals
are not corroded and
that there are no
loose connections, cracks, or loose
clamps.
Terminals
Hold-down clamp
Check that the level is upper than the
center between the bottom of the bat-
tery lid and “LOWER LEVEL” line.
Bottom of the battery lid
“LOWER LEVEL” line
Center of and
If the fluid level is below , replace the
battery.
WARNING
■Emergency measures regarding
electrolyte
●If electrolyte gets in your eyes
Flush your eyes with clean water for at
least 15 minutes and get immediate
medical attention. If possible, continue
to apply water with a sponge or cloth
while traveling to the nearest medical
facility.
●If electrolyte gets on your skin
Wash the affected area thoroughly. If
you feel pain or burning, get medical
attention immediately.
●If electrolyte gets on your clothes
It can soak through clothing on to your
skin. Immediately take off the clothing
and follow the procedure above if nec-
essary.
●If you accidentally swallow electrolyte
Drink a large quantity of water or milk.
Get emergency medical attention
immediately. NOTICE
■When recharging the battery
Never recharge the battery while the
engine is running. Also, be sure all acces-
sories are turned off.
Removing the battery cover
Exterior
Checking battery fluid
A
B
A
B
CAB
C

2976-3. Do-it-yourself maintenance
6
Maintenance and care
filter.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-but-
ton start and wireless remote control will
not function properly.
●The operational range will be reduced.
■When the card key battery needs to be
replaced (if equipped)
The battery for the card key is available only
at Lexus dealers. Your Lexus dealer can
replace the battery for you.
Prepare the following before replacing
the battery:
 Flathead screwdriver
 Small flathead screwdriver
 Lithium battery CR2032
■Use a CR2032 lithium battery
●Batteries can be purchased at your Lexus
dealer, local electrical appliance shops or
camera stores.
●Replace only with the same or equivalent
type recommended by the manufacturer.
●Dispose of used batteries according to
the local laws.
NOTICE
■When using the air conditioning sys-
tem
Make sure that a filter is always installed.
Using the air conditioning system with-
out a filter may cause damage to the sys-
tem.
■To prevent damage to the filter cover
When moving the filter cover in the
direction of arrow to release the fitting,
pay attention not to apply excessive
force to the claws. Otherwise, the claws
may be damaged.
Electronic key battery
Replace the battery with a new one
if it is depleted.
Items to prepare

2986-3. Do-it-yourself maintenance
1Take out the mechanical key.
2
Remove the cover.
To prevent damage to the key, wrap the tip
of the screwdriver with tape.
3Remove the depleted battery using
a small flathead screwdriver.
Insert a new battery with the “+” terminal
facing up.
Replacing the batteryWARNING
■Battery precautions
Observe the following precautions. Fail-
ure to do so may result in death or seri-
ous injury.
●Do not swallow the battery. Doing so
may cause chemical burns.
●A coin battery or button battery is
used in the electronic key. If a battery
is swallowed, it may cause severe
chemical burns in as little as 2 hours
and may result in death or serious
injury.
●Keep away new and removed batter-
ies from children.
●If the cover cannot be firmly closed,
stop using the electronic key and stow
the key in the place where children
cannot reach, and then contact your
Lexus dealer.
●If you accidentally swallow a battery or
put a battery into a part of your body,
get emergency medical attention
immediately.
■To prevent battery explosion or leak-
age of flammable liquid or gas
●Replace the battery with a new battery
of the same type. If a wrong type of
battery is used, it may explode.
●Do not expose batteries to extremely
low pressure due to high altitude or
extremely high temperatures.
●Do not burn, break or cut a battery.
NOTICE
■When replacing the battery
Use a screwdriver of appropriate size.
Applying excessive force may deform or
damage the cover.

2996-3. Do-it-yourself maintenance
6
Maintenance and care
1Turn the engine switch off.
2
Open the Fuse box cover.
Engine compartment:
Push the tab in and lift the lid off.
Trunk
Remove the luggage mat.
Push the tab in and lift the lid off.
NOTICE
■For normal operation after replacing
the battery
Observe the following precautions to
prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to
rust.
●Do not touch or move any other com-
ponent inside the remote control.
●Do not bend either of the battery ter-
minals.
Checking and replacing
f
uses
If any of the electrical components
do not operate, a fuse may have
blown. If this happens, check and
replace the fuses as necessary.
Checking and replacing fuses

305
7
7
When trouble arises
When trouble arises
7-1. Essential informationEmergency flashers.................. 306
If your vehicle has to be stopped in an emergency ..................... 306
If the vehicle is trapped in rising water............................................ 307
7-2. Steps to take in an emergency If your vehicle needs to be towed........................................................ 309
If you think something is wrong ......................................................... 312
Fuel pump shut off system ...... 313
If a warning light turns on or a warning buzzer sounds ........ 314
If a warning message is displayed ........................................................ 323
If you have a flat tire.................. 327
If the engine wi ll not start .......328
If you lose your keys ................. 329
If the fuel filler door cannot be opened........................................ 330
If the electronic key does not operate properly .................... 330
If the battery is discharged .... 332
If the soft top roof cannot be closed .......................................... 338
If your vehicle overheats ........ 345
If the vehicle becomes stuck 347

3067-1. Essential information
7-1.Essential information
Press the switch to flash all of the turn
signal lights.
To turn them off, press the switch once
again.
■Emergency flashers
●If the emergency flashers are used for a
long time while the engine is not running,
the battery may discharge.
●If any of the SRS airbags deploy (inflate)
or in the event of a strong rear impact, the
emergency flashers will turn on automati-
cally. The emergency flashers will turn off
automatically after operating for approxi-
mately 20 minutes. To manually turn the
emergency flashers off, press the switch
twice. (The emergency flashers may not
turn on automatically depending on the
force of the impact and conditions of the
collision.)
1Steadily step on the brake pedal
with both feet and firmly depress it.
Do not pump the brake pedal repeatedly
as this will increase the effort required to
slow the vehicle.
2Shift the shift position to N.
If the shift position is shifted to N
3 After slowing down, stop the vehi-
cle in a safe place by the road.
4 Stop the engine.
If the shift position cannot be shifted
to N
3 Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.
4 To stop the engine, press and hold
the engine switch for 2 consecutive
Emergency flashers
The emergency flashers are used to
warn other drivers when the vehi-
cle has to be stopped in the road
due to a breakdown, etc.
Operating instructions
If your vehicle has to be
stopped in an emergency
Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:
Stopping the vehicle