check engine lexus LC500 2018 Workshop Manual

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7-2. Steps to take in an emergency
When trouble arises
■When the electronic key does not work properly
●Make sure that the smart entry & start system has not been deactivated using the Remote Touch or at any authorized
Lexus retailer or Lexus authorized repairer, or any reliable repairer. If it is off, turn the function on.
●Check if battery-saving mode is set. If it is set, cancel the function. ( P.124)
Use the mechanical key (P.113) in
NOTICE
●Install the tab so that it does not cover
the clip installation position . Fail-
ure to do so may cause damage to the clip and make it impossible to install
the cover.
A
If the electronic key does not
operate properly
If communication between the
electronic key and vehicle is inter-
rupted ( P.124) or the electronic
key cannot be used because the
battery is depleted, the smart entry
& start system and wireless remote
control cannot be used. In such
cases, the doors and trunk can be
opened and the engine tem> can be started by following
the procedure below.
NOTICE
■In case of a smart entry & start system malfunction or other key-related
problems
Take your vehicle with all the electronic keys provided with your vehicle, to any authorized Lexus retailer or Lexus
authorized repairer, or any reliable repairer as soon as possible.
Locking and unlocking the
doors, opening the trunk and
using the key li nked functions

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7-2. Steps to take in an emergency
order to perform the following opera-
tions:
■Locking and unlocking the door
1 Push in the depression on the front
edge of the driver’s door handle.
2 Insert the mechanical key while
pulling on the driver’s door handle.
3 Turn the key in order to perform the
following operations.
Locks both side doors
Closes the windows (turn and
hold)*
Unlocks both side doors
Opens the windows (turn and
hold)*
*: These settings must be customized at
any authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.
■Opening the trunk
Unlock the doors, and press the trunk
opener switch.
1 Depress the brake pedal.
2 Touch the Lexus emblem side of the
electronic key to the engine switch
.
When the electronic key is detected, a buzzer sounds and the engine switch
will turn to IGNITION ON mode .
When the smart entry & start system is deactivated in customization setting, the engine switch will turn to
A
B
C
D
WARNING
■When using the mechanical key and operating the power windows
Operate the power window after check- ing to make sure that there is no possibil-
ity of any passenger having any of their body parts caught in the window.Also, do not allow children to operate the
mechanical key. It is possible for children and other passengers to get caught in the power window.
Starting the engine tem>

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7-2. Steps to take in an emergency
When trouble arises
ACCESSORY mode.
3Firmly depress the brake pedal and
check that is shown on the
multi-information display.
4 Press the engine switch switch>.
In the event that the engine tem> still cannot be started, contact
any authorized Lexus retailer or Lexus
authorized repairer, or any reliable
repairer.
■Stopping the engine
Set the parking brake, shift the shift position to P and press the engine switch as you normally do when stopping
the engine .
■Electronic key battery
As the above procedure is a temporary
measure, it is recommended that the elec- tronic key battery be replaced immediately when the battery is depleted. ( P.349)
■Alarm (if equipped)
Using the mechanical key to lock the doors will not set the alarm system.
If a door is unlocked using the mechanical key when the alarm system is set, the alarm may be triggered.
■Changing engine switch
modes
Release the brake pedal and press the
engine switch in step 3
above. The engine does not start and modes will be changed each time the
switch is pressed. ( P.165, 170)

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7-2. Steps to take in an emergency
When trouble arises
radiator core (radiator) for any
leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact any authorized Lexus retailer
or Lexus authorized repairer, or any reli-
able repairer.
4 The coolant level is satisfactory if it
is between the “F” and “L” lines on
the reservoir.
Reservoir
“F” line
“L” line
Coolant inlet cap
5 Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
6 Start the engine and turn the air
conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning
system is turned on immediately after a cold start. Confirm that the fan is operating by checking the fan sound and air flow. If it
is difficult to check these, turn the air con- ditioning system on and off repeatedly. (The fan may not operate in freezing tem-
peratures.)
7 If the fan is not operating:
Stop the engine immediately and
contact any authorized Lexus
retailer or Lexus authorized
repairer, or any reliable repairer.
If the fan is operating:
Have the vehicle inspected at the
nearest authorized Lexus retailer
or Lexus authorized repairer, or any
reliable repairer.
■When adding coolant
Add coolant in accordance with the follow- ing procedure.
1 Remove the service cover.
A
B
A
B
C
D

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7-2. Steps to take in an emergency
engine coolant is unavailable.
6 Start the hybrid system and turn the
air conditioning system on to check
that the radiator cooling fan oper-
ates and to check for coolant leaks
from the radiator or hoses.
The fan operates when the air conditioning system is turned on immediately after a
cold start. Confirm that the fan is operating by checking the fan sound and air flow. If it is difficult to check these, turn the air con-
ditioning system on and off repeatedly. (The fan may not operate in freezing tem-peratures.)
7 If the fan is not operating:
Stop the hybrid system immediately
and contact any authorized Lexus
retailer or Lexus authorized
repairer, or any reliable repairer.
If the fan is operating:
Have the vehicle inspected at the
nearest any authorized Lexus
retailer or Lexus authorized
repairer, or any reliable repairer.
If “Hybrid System Overheated
Reduced Output Power” is shown
on the multi-information display
1 Stop the vehicle in a safe place.
2 Stop the hybrid system and care-
fully lift the hood.
3 After the hybrid system has cooled
down, inspect the hoses and radia-
tor core (radiator) for any leaks.
Radiator
Cooling fan
If a large amount of coolant leaks, immedi-
ately contact any authorized Lexus retailer
or Lexus authorized repairer, or any reli-
able repairer.
4 The coolant level is satisfactory if it
is between the “F”/“FULL” and
“L”/“LOW” lines on the reservoir.
Reservoir
A
B
A

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7-2. Steps to take in an emergency
When trouble arises
“F”/“FULL” line
“L”/“LOW” line
5 Add coolant if necessary.
Water can be used in an emergency if
power control unit coolant is unavailable.
6 After stopping the hybrid system
and waiting for 5 minutes or more,
start the hybrid system again and
check if “Hybrid System Over-
heated Reduced Output Power” is
shown on the multi-information dis-
play.
If the message does not disappear:
Stop the hybrid system and contact any authorized Lexus retailer or Lexus autho-rized repairer, or any reliable repairer.
If the message is not displayed:
The hybrid system temperature has dropped and the vehicle may be driven normally.
However, if the message appears again fre-
quently, contact any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer.
■When adding engine coolant
Add coolant in accordance with the follow- ing procedure.
1 Remove the service cover.
2 Remove the engine cover.
3 Remove caps and .
4 Add coolant through the inlet of the cap
up to the “F” line , and then
replace the cap .
5 Add coolant through the inlet of cap
until it is full, and then replace the
cap .
B
C
AB
AC
A
B
B

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7-2. Steps to take in an emergency
WARNING
■When inspecting under the hood of your vehicle
Observe the following precautions. Failure to do so may result in serious
injury such as burns.
●If steam is seen coming from under the hood, do not open the hood until the steam has subsided. The engine com-
partment may be very hot.
●After the hybrid system has been turned off, check that the “READY” indicator is off.
When the hybrid system is operating, the gasoline engine may automatically start, or the cooling fan may suddenly
operate even if the gasoline engine stops. Do not touch or approach rotat-ing parts such as the fan, which may
lead to fingers or clothing (especially a tie, a scarf or a muffler) getting caught, resulting in serious injury.
●Do not loosen the coolant inlet cap or
coolant reservoir caps while the hybrid system and radiator are hot.High temperature steam or coolant
could spray out.
NOTICE
■When adding engine/power control unit coolant
Add coolant slowly after the hybrid sys- tem has cooled down sufficiently. Adding
cool coolant to a hot hybrid system too quickly can cause damage to the hybrid system.
■To prevent damage to the cooling sys-
tem
Observe the following precautions:
●Avoid contaminating the coolant with foreign matter (such as sand or dust etc.).
●Do not use any coolant additive.

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8-1. Specifications
Vehicle specifications
LC500
■Oil capacity (Drain and refill [Ref-
erence*])
*: The engine oil capacity is a reference
quantity to be used when changing the
engine oil. Warm up and turn off the
engine, wait more than 5 minutes, and
check the oil level on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Lexus recom-
mends the use of approved “Toyota
Genuine Motor Oil”. Another motor
oil of matching quality can also be
used.
Oil grade:
5W-30 and 10W-30:
API grade SL “Energy-Conserving”,
SM “Energy-Conserving” or SN
“Resource-Conserving”; or ILSAC
multigrade engine oil
15W-40:
API grade SL, SM or SN multigrade
engine oil
Recommended viscosity (SAE):
SAE 5W-30 is filled into your Lexus
vehicle at manufacturing, and the best
choice for good fuel economy and
good starting in cold weather.
If you use SAE 10W-30 or a higher vis-
cosity engine oil in extremely low tem-
peratures, the engine may become
difficult to start, so SAE 5W-30 engine
oil is recommended.
Temperature range anticipated
before next oil change.
Preferred
Oil viscosity (5W-30 is explained here
as an example):
• The 5W in 5W-30 indicates the
characteristic of the oil which allows
cold startability. Oils with a lower
value before the W allow for easier
starting of the engine in cold
weather.
• The 30 in 5W-30 indicates the vis-
cosity characteristic of the oil when
the oil is at high temperature. An oil
with a higher viscosity (one with a
Capacity3.6 Ah
Quantity84 cells
Overall voltage310.8 V
Lubrication system
With filter8.6 L (9.1 qt., 7.6 Imp.qt.)
Without filter7.9 L (8.4 qt., 7.0 Imp.qt.)
A
B

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8-1. Specifications
higher value) may be better suited if
the vehicle is operated at high
speeds, or under extreme load con-
ditions.
How to read oil container labels:
Either or both API registered marks
are added to some oil containers to
help you select the oil you should use.
API Service Symbol
Top portion: “API SERVICE SN” means the
oil quality designation by American Petro-
leum Institute (API).
Center portion: “SAE 5W-30” means the
SAE viscosity grade.
Lower portion: “Resource-Conserving”
means that the oil has fuel-saving and envi-
ronmental protection capabilities.
ILSAC Certification Mark
The International Lubr icant Specification
Advisory Committee (ILSAC) Certifica-
tion Mark is displayed on the front of the
container.
LC500h
■Oil capacity (Drain and refill [Ref-
erence*])
*: The engine oil capacity is a reference
quantity to be used when changing the
engine oil. Warm up the engine and turn
off the hybrid system, wait more than 5
minutes, and check the oil level on the
dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in
your Lexus vehicle. Lexus recom-
mends the use of approved “Toyota
Genuine Motor Oil”. Another motor
oil of matching quality can also be
used.
Oil grade:
0W-20, 5W-30 and 10W-30:
API grade SL “Energy-Conserving”,
SM “Energy-Conserving” or SN
“Resource-Conserving”; or ILSAC
multigrade engine oil
15W-40:
API grade SL, SM or SN multigrade
engine oil
Recommended viscosity (SAE):
SAE 0W-20 is filled into your Lexus
vehicle at manufacturing, and the best
choice for good fuel economy and
good starting in cold weather.
If SAE 0W-20 oil is not available, SAE
5W-30 oil may be used. However, it
should be replaced with SAE 0W-20
at the next oil change.
If you use SAE 10W-30 or a higher vis-
cosity engine oil in extremely low tem-
peratures, the engine may become
difficult to start, so SAE 0W-20 or
5W-30 engine oil is recommended.With filter5.7 L (6.0 qt., 5.0 Imp.qt.)
Without filter5.5 L (5.8 qt., 4.8 Imp.qt.)
A
B

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8-1. Specifications
*: Your Lexus vehicle is filled with “Toyota Genuine Differential Gear Oil” at the factory.
Use Lexus approved “Toyota Genuine Differentia l Gear Oil” or an equivalent of match-
ing quality to satisfy the above specification. Please contact any authorized Lexus retailer
or Lexus authorized repairer, or any reliable repairer for further details.
*1: Minimum pedal clearance when depressed with a force of 500 N (51.0 kgf, 112.4 lbf)
while the engine is running .
When performing the brake pedal inspection, also be sure to check that the brake sys-
tem warning light is not illuminated when the en gine is running ing>. (If the brake system warning light is illuminated, refer to P.368)
*2: Make sure to confirm that the brake system wa rning light (yellow) does not illuminate. (If
the brake system warning ligh t illuminates, refer to P.373)
Differential
Oil capacity0.85 L (0.90 qt., 0.75 Imp. qt.)
Oil type and viscosity
Without LSD (Limited Slip Differential)
Toyota Genuine Differential gear oil LT 75W-85 GL-
5 or equivalent*
With LSD (Limited Slip Differential)
Toyota Genuine Differential gear oil LX 75W-85 GL-
5 or equivalent*
Brakes
Pedal clearance*1132 mm (5.2 in.) Min.
Pedal free play1.0 - 6.0 mm (0.04 - 0.24 in.)
Brake pad wear limit1.0 mm (0.04 in.)
Parking brake indicator*2
When pushing the parking br ake switch for 1 to 4 sec-
onds: comes on
When pulling the pa rking brake switch for 1 to 4 sec-
onds: turns off
Fluid typeSAE J1703 or FMVSS No. 116 DOT 3,
SAE J1704 or FMVSS No. 116 DOT 4
Steering
Free playLess than 30 mm (1.2 in.)