2021 Lexus LC500C lexus LC500C 2021 Owner's Manual / LEXUS 2021 LC500 CONVERTIBLE OWNER'S MANUAL (OM11498U)

3357-2. Steps to take in an emergency
7
When trouble arises
Then, connect a negative cable clamp to on the second vehicle and con-
nect the clamp at the other end of the negative cable to .
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery terminal (second vehicle)
Solid, stationary, unpainted metallic point away from the exclusive jump starting
terminal and any mo ving parts as shown in the illustration
6 Start the engine of the second vehi-
cle. Increase the engine speed
slightly and maintain at that level for
approximately 5 minutes to
recharge the battery of your vehi-
cle.
7 Open and close any of the door of
your vehicle with the engine switch
OFF.
8 Maintain the engine speed of the
second vehicle and start the engine
of your vehicle by turning the
engine switch to ON.
9 Once the vehicle’s engine has
started, remove the jumper cables
in the exact reverse order from
which they were connected. 10
Close the exclusive jump starting
terminal cover, and reinstall the
fuse box cover to its original posi-
tion.
Once the engine starts, have the vehicle
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 stopped.
●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.
C
D
A
B
C
D

3367-2. Steps to take in an emergency
■When the battery is removed or dis-
charged
●Side window open/close function linked
to door operation does not operate.
When closing the side window, slowly
close the side window while pushing the
upper portion of the side window
inside the soft top roof.
●Information stored in the ECU is cleared.
When the battery is depleted, have the
vehicle inspected at your Lexus dealer.
●Some systems may require initialization.
( P.378)
■When removing the battery terminals
When the battery terminals are removed,
the information stored in the ECU is
cleared. Before removi ng 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
●Immediately after replacing the battery,
fully open or close the soft top roof, as the
luggage cover may be half-opened.
●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 wh at 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 cannot
be towed without lifting both rear wheels
because the rear wheels will be locked.
(  P.310)
■When replacing the battery
●Use a Central Degassing type battery
(European Regulations).
●Use a battery that the case size is same as
the previous one (LN4), 20 hour rate
capacity (20HR) is eq uivalent (80Ah) or
greater, and performance rating (CCA)
is equivalent (685A) 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 engine may not be able to
start.
●Use a battery with a handle. If a battery
without a handle is used, removal is more
difficult.
●After exchanging, firmly attach the fol-
lowing items to the exhaust hole of the
battery.
• Use the exhaust hose that was attached to the battery before exchanging.
• Use the exhaust hole plug included with the battery exchanged or the one
A

3377-2. Steps to take in an emergency
7
When trouble arises
installed on the battery prior to the
exchange. (Depending on the battery to
be exchanged, the exhaust hole may be
plugged.)Exhaust hole plug
Exhaust hole
Exhaust hose
For details, consult your Lexus dealer.
WARNING
■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, leadin g 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 unintentiona lly in contact with
any other than the intended terminal.
A
B
C
●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.
●If the battery fluid level is excessively
low ( P.280), do not use the battery.
■Battery precautions
The battery contains poisonous and cor-
rosive acidic electrol yte, while related
parts contain lead and lead compounds.
Observe the following precautions when
handling the battery:
●When working with the battery, always
wear safety glasses and take care not
to allow any battery fluids (acid) to
come into contact with skin, clothing
or the vehicle body.
●Do not lean over the battery.
●In the event that battery fluid comes
into contact with the skin or eyes,
immediately wash the affected area
with water and seek medical attention.
Place a wet sponge or cloth over the
affected area until medical attention
can be received.
●Always wash your hands after han-
dling the battery support, terminals,
and other battery-related parts.
●Do not allow children near the battery.
■After recharging the battery
Have the battery inspected at your Lexus
dealer as soon as possible. If the battery
is deteriorating, continued use may
cause the battery to emit a malodorous
gas, which may be detrimental to the
health of passengers.

3387-2. Steps to take in an emergency
Two or more people are needed for
this procedure and some steps
requires a large force.
 There is a possibility to damage the
vehicle when applying a strong
force or removing the parts. Lexus
recommends contact ing your Lexus
dealer.
WARNING
■When exchanging the battery
After exchanging, securely attach the
exhaust hose and exhaust hole plug to
the exhaust hole of the exchanged bat-
tery. If not properly installed, gases
(hydrogen) may leak into the vehicle
interior, and there is the possible danger
of the gas igniting and exploding.
NOTICE
■When handling jumper cables
When connecting the jumper cables,
ensure that they do not become entan-
gled in the cooling fan or engine drive
belt.
■To prevent damaging the vehicle
The exclusive jump starting terminal is to
be used when charging the battery from
another vehicle in an emergency. It can-
not be used to jump start another vehicle.
If the soft top roof cannot be
c
losed
If the soft top roof cannot be closed
even though the roof switch is oper-
ated, check that all the operational
conditions are met. ( P.127)
If all the operational conditions are
met and the soft top roof cannot be
closed, there may be a malfunction.
Immediately have the vehicle
inspected by your Lexus dealer.
When “Opening Function Unavail-
able System Overheated” or
“Function Temporarily Unavailable
System Overheated” is displayed
on the multi-information display, do
not close the soft top roof manually.
If the soft top roof is closed manu-
ally, the roof switch may not prop-
erly operates next time.
In this case, the soft top roof can be
closed by the following procedure
as an emergency measure, how-
ever, Lexus does not recommend it
as this procedure requires special-
ized knowledge.
Before closing the soft top roof

3397-2. Steps to take in an emergency
7
When trouble arises
When touching a place where a
hand can not easily reach, wear
gloves to protect your hands.
 Turn the engine switch off.
 The tool for manually closing the
soft top roof is stored in the glove
box. ( P.246)
Tool bag
Tool
Groove
1 Press the All window control switch
to fully open the side windows and
rear quarter windows. ( P.122) If
the switch does not operate, con-
tact your Lexus dealer. 2
Remove the cover behind the rear
left seat.
1 Remove the claw on the left side
using the flathead screwdriver.
The flathead screwdriver is installed in the
trunk.
2Remove the claw on the right side.
Tool
Closing the soft top roof
A
B
C

3407-2. Steps to take in an emergency
3Take out the yellow ring from
the clamp and pull it.
4 While pulling the yellow ring to
unlock the luggage cover, hold the
portions of the luggage cover
and lift it to the rear of the vehicle
without tilting laterally.
If your hands are released while lifting the
luggage cover, the luggage cover may
shut, resulting in hands or arms being
caught between the cover and vehicle.
After lifting the lugg age cover up, attach
the portion between the red line and root of the yellow ring to the clamp.
5
Insert the tool into the hole on
the center of the back side of the
luggage cover.
6 Rotate the tool until it no longer
moves.
A
B
A
B
A

3417-2. Steps to take in an emergency
7
When trouble arises
Rotate the tool again with applying more
force to check that the tool has been com-
pletely rotated.
7Hold the both right and left portions
of the stored soft top roof
simultaneously. 8
Lift up the soft top roof without tilt-
ing laterally, move it to the front of
the vehicle, and close it.
After lifting up the soft top roof to the posi-
tion shown in the illustration, lower the
front part of the soft top roof holding the
lower part of the rear window.
9Remove the cover inside the soft
top roof using a flathead screw-
driver.
A
A

3427-2. Steps to take in an emergency
10Insert the tool into the hole .
11 Rotate the tool until it no longer
moves.
The front side of the soft top roof will be
locked.
Push the inner side of the soft top roof
to check that the soft top roof is firmly
locked and not raised.
If the soft top roof is not firmly locked, it
may be opened by wind pressure while
driving.
12While lifting the portion of the
under the rear window, hold the
portion of the luggage cover and move it to the front side of the
vehicle and close it.
When closing the luggage cover, be care-
ful that your hand or fi
ngers is not caught in
the luggage cover and vehicle.
13 Lower the rear window and push
the rear center of the luggage
cover.
Check that there is no difference in height
between the luggage cover and trunk and
A
A
A
B