LEXUS CT200H (2017 year). Instruction - part 31

Main

12-volt battery

The 12-volt battery is located in the
right-hand side of luggage compart-
ment.

Open the center and right side deck boards. (

P. 439)

Remove the center auxiliary box. (

P. 557)

Remove the right side auxiliary box.

Remove the 12-volt battery mainte-
nance cover.

Location

Removing the 12-volt battery maintenance cover

492

Make sure that the 12-volt battery terminals are not corroded and that there are
no loose connections, cracks, or loose clamps.

Terminals
Hold-down clamp

Insert the 2 tabs on the far side of the
cover into the holes.

Hook on the 2 tabs on the near side
of the cover.

Hook on the 2 tabs on the upper
side of the cover.

Exterior

Installing the 12-volt battery maintenance cover

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■

Before recharging
When recharging, the 12-volt battery produces hydrogen gas which is flammable and

explosive. Therefore, observe the following precautions before recharging:

●

If recharging with the 12-volt battery installed on the vehicle, be sure to disconnect the

ground cable.

●

Make sure the power switch on the charger is off when connecting and disconnecting

the charger cables to the 12-volt battery.

■

After recharging/reconnecting the 12-volt battery

●

Unlocking the doors using the smart access system with push-button start may not be

possible immediately after reconnecting the 12-volt battery. If this happens, use the

wireless remote control or the mechanical key to lock/unlock the doors.

●

Start the hybrid system with the power switch in ACCESSORY mode. The hybrid sys-

tem may not start with the power switch turned off. However, the hybrid system will

operate normally from the second attempt.

●

The power switch mode is recorded by the vehicle. If the 12-volt battery is reconnected,

the vehicle will return the power switch mode to the status it was in before the 12-volt

battery was disconnected. Make sure to turn off the power before disconnect the 12-

volt battery. Take extra care when connecting the 12-volt battery if the power switch

mode prior to discharge is unknown.

●

Restart the hybrid system, depress the brake pedal, and confirm that it is possible to

shift into each shift position.

If the system will not start even after multiple attempts at all methods above, contact your

Lexus dealer.

WARNING

■

Chemicals in the 12-volt battery
The 12-volt battery contains poisonous and corrosive sulfuric acid and may produce

hydrogen gas which is flammable and explosive. To reduce the risk of death or serious

injury, take the following precautions while working on or near the 12-volt battery:

●

Do not cause sparks by touching the 12-volt battery terminals with tools.

●

Do not smoke or light a match near the 12-volt battery.

●

Avoid contact with eyes, skin and clothes.

●

Never inhale or swallow electrolyte.

●

Wear protective safety glasses when working near the 12-volt battery.

●

Keep children away from the 12-volt battery.

■

Where to safely charge the 12-volt battery
Always charge the 12-volt battery in an open area. Do not charge the 12-volt battery in

a garage or closed room where there is insufficient ventilation.

■

How to recharge the 12-volt battery
Only perform a slow charge (4.2 A or less). The 12-volt battery may explode if charged

at a quicker rate.

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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 fol-

low the procedure above if necessary.

●

If you accidentally swallow electrolyte

Drink a large quantity of water or milk. Get emergency medical attention immedi-

ately.

■

When replacing the 12-volt battery
Use a 12-volt battery designed for this vehicle. Failure to do so may cause gas (hydro-

gen) to enter the passenger compartment, causing a fire or explosion.
For replacement of the 12-volt battery, contact your Lexus dealer.

■

When disconnecting the 12-volt battery

NOTICE

■

When recharging the 12-volt battery
Never recharge the 12-volt battery while the hybrid system is operating. Also, be sure

all accessories are turned off.

Do not disconnect the negative (-) terminal on

the body side as shown. The disconnected neg-

ative (-) terminal may touch the positive (+) ter-

minal, which may cause a short and result in

death or serious injury.

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Main

Tires

Check if the treadwear indicators are showing on the tires. Also check the tires
for uneven wear, such as excessive wear on one side of the tread.
Check the spare tire condition and pressure if not rotated.

New tread
Worn tread
Treadwear indicator

The location of treadwear indicators is shown by the “TWI” or “

” mark, etc., molded

into the sidewall of each tire.

Replace the tires if the treadwear indicators are showing on a tire.

Rotate the tires in the order shown.

To equalize tire wear and extend tire life,

Lexus recommends that tire rotation is

carried out at the same interval as tire

inspection.
Do not fail to initialize the tire pressure

warning system after tire rotation.

Replace or rotate tires in accordance with maintenance schedules and tread-
wear.

Checking tires

Tire rotation

2
3

Front

496

Your vehicle is equipped with a tire pressure warning system that uses tire pres-
sure warning valves and transmitters to detect low tire inflation pressure before
serious problems arise.
If the tire pressure drops below a predetermined level, the driver is warned by a
warning light. (

P. 537)

◆

Installing tire pressure warning valves and transmitters

When replacing tires or wheels, tire pressure warning valves and transmitters
must also be installed.
When new tire pressure warning valves and transmitters are installed, new ID
codes must be registered in the tire pressure warning computer and the tire
pressure warning system must be initialized. Have tire pressure warning valve
and transmitter ID codes registered by your Lexus dealer. (

P. 497)

◆

Initializing the tire pressure warning system

■

The tire pressure warning system must be initialized in the following circum-
stances:

●

Vehicles with 17 inch tires: When rotating front and rear tires which have
different tire inflation pressures

●

When changing the tire size

When the tire pressure warning system is initialized, the current tire inflation
pressure is set as the benchmark pressure.

■

How to initialize the tire pressure warning system

Park the vehicle in a safe place and turn the power switch off.

Initialization cannot be performed while the vehicle is moving.

Adjust the tire inflation pressure to the specified cold tire inflation pressure
level. (

P. 583)

Make sure to adjust the tire pressure to the specified cold tire inflation pressure

level. The tire pressure warning system will operate based on this pressure level.

Turn the power switch to ON mode.

Tire pressure warning system

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Press and hold the tire pressure
warning reset switch until the tire
pressure warning light blinks
slowly 3 times.

Wait for a few minutes with the power switch in ON mode and then turn
the power switch off.

◆

Registering ID codes

The tire pressure warning valve and transmitter is equipped with a unique ID
code. When replacing a tire pressure warning valve and transmitter, it is nec-
essary to register the ID code. Have the ID code registered by your Lexus
dealer.

■

When to replace your vehicle’s tires
Tires should be replaced if:

●

The treadwear indicators are showing on a tire.

●

You have tire damage such as cuts, splits, cracks deep enough to expose the fabric, and

bulges indicating internal damage.

●

A tire goes flat repeatedly or cannot be properly repaired due to the size or location of

a cut or other damage.

If you are not sure, consult with your Lexus dealer.

■

Replacing tires and wheels
If the ID code of the tire pressure warning valve and transmitter is not registered, the tire

pressure warning system will not work properly. After driving for about 20 minutes, the

tire pressure warning light blinks for 1 minute and stays on to indicate a system malfunc-

tion.

■

Tire life
Any tire over 6 years old must be checked by a qualified technician even if it has seldom

or never been used or damage is not obvious.

■

Routine tire inflation pressure checks
The tire pressure warning system does not replace routine tire inflation pressure checks.

Make sure to check tire inflation pressure as part of your routine of daily vehicle checks.

498

■

Low profile tires (vehicles with 17 inch tires)
Generally, low profile tires will wear more rapidly and tire grip performance will be

reduced on snowy and/or icy roads when compared to standard tires. Be sure to use

snow tires or tire chains on snowy and/or icy roads and drive carefully at a speed appro-

priate for road and weather conditions.

■

Maximum load of tire
Check that the maximum load of the replacement tire is greater than 1/2 of the Gross

Axle Weight Ratings (GAWR) of either the front axle or the rear axle, whichever is

greater.

■

Tire types

●

Summer tires
Summer tires are high-speed performance tires best suited to highway driving under

dry conditions. Since summer tires do not have the same traction performance as

snow tires, summer tires are inadequate for driving on snow-covered or icy roads. For

driving on snow-covered roads or icy roads, the use of snow tires is recommended.

When installing snow tires, be sure to replace all four tires.

●

All season tires
All season tires are designed to provide better traction in snow and to be adequate for

driving in most winter conditions as well as for use year-round. All season tires, how-

ever, do not have adequate traction performance compared with snow tires in heavy

or loose snow. Also, all season tires fall short in acceleration and handling perfor-

mance compared with summer tires in highway driving.

●

Snow tires
For driving on snow-covered roads or icy roads, we recommend using snow tires. If

you need snow tires, select tires of the same size, construction and load capacity as the

originally installed tires. Since your vehicle has radial tires as original equipment, make

sure your snow tires also have radial construction. Do not install studded tires without

first checking local regulations for possible restrictions. Snow tires should be installed

on all wheels. (

P. 249)

■

If the tread on snow tires wears down below 0.16 in. (4 mm)
The effectiveness of the tires as snow tires is lost.

For the GAWR, see the Certification Label. For

the maximum load of the tire, see the load limit

at maximum cold tire inflation pressure men-

tioned on the sidewall of the tire. (

P. 588)

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■

Situations in which the tire pressure warning system may not operate properly

●

In the following cases, the tire pressure warning system may not operate properly.
• If non-genuine Lexus wheels are used.

• A tire has been replaced with a tire that is not an OE (Original Equipment) tire.

• A tire has been replaced with a tire that is not of the specified size.

• Tire chains etc. are equipped.

• Lock nuts are equipped.

• An auxiliary-supported run-flat tire is equipped.

• If a window tint that affects the radio wave signals is installed.

• If there is a lot of snow or ice on the vehicle, particularly around the wheels or wheel

housings.

• If the tire inflation pressure is extremely higher than the specified level.

• If wheel without the tire pressure warning valve and transmitter is used.

• If the ID code on the tire pressure warning valves and transmitters is not registered

in the tire pressure warning computer.

●

Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large display, air-

port or other facility that generates strong radio waves or electrical noise

• When carrying a portable radio, cellular phone, cordless phone or other wireless

communication device

●

When the vehicle is parked, the time taken for the warning to start or go off could be

extended.

●

When tire inflation pressure declines rapidly for example when a tire has burst, the

warning may not function.

■

The initialization operation

●

Make sure to carry out initialization after adjusting the tire inflation pressure.

Also, make sure the tires are cold before carrying out initialization or tire inflation pres-

sure adjustment.

●

If you have accidentally turned the power switch off during initialization, it is not neces-

sary to press the reset switch again as initialization will restart automatically when the

power switch has been turned to ON mode for the next time.

●

If you accidentally press the reset switch when initialization is not necessary, adjust the

tire inflation pressure to the specified level when the tires are cold, and conduct initial-

ization again.

■

When initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases, the set-

tings have not been recorded and the system will not operate properly. If repeated

attempts to record tire inflation pressure settings are unsuccessful, have the vehicle

inspected by your Lexus dealer.

●

When operating the tire pressure warning reset switch, the tire pressure warning light

does not blink 3 times.

●

After carrying out the initialization procedure, the tire pressure warning light blinks for 1

minute then stays on after driving for 20 minutes.

500

■

Certification for tire pressure warning system



For vehicles sold in the U.S.A., Hawaii, Guam, Puerto Rico and NATO Germany

FCC ID: PAXPMV107J
NOTE

This device complies with part 15 of the FCC Rules. Operation is subject to the following

two conditions: (1) This device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired

operation.
FCC WARNING

Changes or modifications not expressly approved by the party responsible for compli-

ance could void the user’s authority to operate the equipment.

NOTE:

This device complies with part 15 of the FCC Rules. Operation is subject to the following

two conditions: (1) This device may not cause harmful interference, and (2) this device

must accept any interference received, including interference that may cause undesired

operation.
FCC WARNING:

Changes or modifications not expressly approved by the party responsible for compli-

ance could void the user’s authority to operate the equipment.



For vehicles sold in Canada

NOTE

Operation is subject to the following two conditions: (1) this device may not cause inter-

ference, and (2) this device must accept any interference, including interference that

may cause undesired operation of the device.

WARNING

■

When inspecting or replacing tires
Observe the following precautions to prevent accidents.

Failure to do so may cause damage to parts of the drive train as well as dangerous han-

dling characteristics, which may lead to an accident resulting in death or serious injury.

●

Make sure to install four tires that are of the specified size, and that all four tires are of

the same size, same brand, and same tread pattern.

●

Do not use tire sizes other than those recommended by Lexus.

●

Do not mix differently constructed tires (radial, bias-belted or bias-ply tires).

●

If only two tires are replaced, the new tires should be placed on the rear of the vehicle.

●

Do not mix summer, all season and snow tires.

●

Do not use tires that have been used on another vehicle.

Do not use tires if you do not know how they were used previously.

■

When initializing the tire pressure warning system
Do not operate the tire pressure warning reset switch without first adjusting the tire

inflation pressure to the specified level. Otherwise, the tire pressure warning light may

not come on even if the tire inflation pressure is low, or it may come on when the tire

inflation pressure is actually normal.

FCC ID: HYQ13BDE

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NOTICE

■

Repairing or replacing tires, wheels, tire pressure warning valves, transmitters and

tire valve caps

●

When removing or fitting the wheels, tires or the tire pressure warning valves and

transmitters, contact your Lexus dealer as the tire pressure warning valves and trans-

mitters may be damaged if not handled correctly.

●

Make sure to install the tire valve caps. If the tire valve caps are not installed, water

could enter the tire pressure warning valves and the tire pressure warning valves

could be bound.

●

When replacing tire valve caps, do not use tire valve caps other than those specified.

The cap may become stuck.

■

To avoid damage to the tire pressure warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and trans-

mitter may not operate properly. If a liquid sealant is used, contact your Lexus dealer or

other qualified service shop as soon as possible. After use of liquid sealant, make sure

to replace the tire pressure warning valve and transmitter when repairing or replacing

the tire. (

P. 496)

■

Driving on rough roads
Take particular care when driving on roads with loose surfaces or potholes.

These conditions may cause losses in tire inflation pressure, reducing the cushioning

ability of the tires. In addition, driving on rough roads may cause damage to the tires

themselves, as well as the vehicle’s wheels and body.

■

Low profile tires (vehicles with 17 inch tires)
Low profile tires may cause greater damage than usual to the tire wheel when sustain-

ing impact from the road surface. Therefore, pay attention to the following:

●

Be sure to use proper tire inflation pressure. If tires are under-inflated, they may be

damaged more severely.

●

Avoid potholes, uneven pavement, curbs and other road hazards. Failure to do so

may lead to severe tire and wheel damage.

■

If tire inflation pressure of each tire becomes low while driving
Do not continue driving, or your tires and/or wheels may be ruined.

502

Tire inflation pressure

The recommended cold tire inflation
pressure and tire size are displayed on
the tire and loading information label.
(

P. 583)

Tire inflation pressure

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Tire valve
Tire pressure gauge

Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the gauge gradations.
If the tire inflation pressure is not at the recommended level, adjust the pres-
sure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflation pressure measurement and adjustment,
apply soapy water to the valve and check for leakage.
Put the tire valve cap back on.

■

Tire inflation pressure check interval
You should check tire inflation pressure every two weeks, or at least once a month.

Do not forget to check the spare.

■

Effects of incorrect tire inflation pressure
Driving with incorrect tire inflation pressure may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor handling

●

Reduced tire life due to wear

●

Reduced safety

●

Damage to the drive train

If a tire needs frequent inflating, have it checked by your Lexus dealer.

Inspection and adjustment procedure

2
3
4

504

■

Instructions for checking tire inflation pressure
When checking tire inflation pressure, observe the following:

●

Check only when the tires are cold.

If your vehicle has been parked for at least 3 hours or has not been driven for more than

1 mile or 1.5 km, you will get an accurate cold tire inflation pressure reading.

●

Always use a tire pressure gauge.

It is difficult to judge if a tire is properly inflated based only on its appearance.

●

It is normal for the tire inflation pressure to be higher after driving as heat is generated

in the tire. Do not reduce tire inflation pressure after driving.

●

Never exceed the vehicle capacity weight.

Passengers and luggage weight should be placed so that the vehicle is balanced.

WARNING

■

Proper inflation is critical to save tire performance
Keep your tires properly inflated.
If the tires are not properly inflated, the following conditions may occur which could

lead to an accident resulting in death or serious injury:

●

Excessive wear

●

Uneven wear

●

Poor handling

●

Possibility of blowouts resulting from overheated tires

●

Air leaking from between tire and wheel

●

Wheel deformation and/or tire damage

●

Greater possibility of tire damage while driving (due to road hazards, expansion

joints, sharp edges in the road, etc.)

NOTICE

■

When inspecting and adjusting tire inflation pressure
Be sure to put the tire valve caps back on.

If a valve cap is not installed, dirt or moisture may get into the valve and cause an air

leak, resulting in decreased tire inflation pressure.

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Main

Wheels

When replacing wheels, care should be taken to ensure that they are equivalent
to those removed in load capacity, diameter, rim width and inset

Replacement wheels are available at your Lexus dealer.

: Conventionally referred to as “offset”.

Lexus does not recommend using the following:

●

Wheels of different sizes or types

●

Used wheels

●

Bent wheels that have been straightened

●

Use only Lexus wheel nuts and wrenches designed for use with your alumi-
num wheels.

●

When rotating, repairing or changing your tires, check that the wheel nuts are
still tight after driving 1000 miles (1600 km).

●

Be careful not to damage the aluminum wheels when using tire chains.

●

Use only Lexus genuine balance weights or equivalent and a plastic or rubber
hammer when balancing your wheels.

■

When replacing wheels
The wheels of your vehicle are equipped with tire pressure warning valves and transmit-

ters that allow the tire pressure warning system to provide advance warning in the event

of a loss in tire inflation pressure. Whenever wheels are replaced, tire pressure warning

valves and transmitters must be installed. (

P. 496)

If a wheel is bent, cracked or heavily corroded, it should be replaced. Other-
wise, the tire may separate from the wheel or cause a loss of handling control.

Wheel selection

Aluminum wheel precautions

506