engine Lexus GS250 2012 Owner's Manual

6626-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)With the engine at operating temperature and turned off, check the
oil level on the dipstick.
Checking the engine oil
Park the vehicle on level ground. After warming up the engine
and turning it off, wait more than 5 minutes for the oil to drain
back into the bottom of the engine.
Holding a rag under the end,
pull the dipstick out.
Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check
the oil level.
Low
Full
Wipe the dipstick and reinsert it fully.
Engine oil
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Type AType B
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663 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
Adding engine oil
If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.
Make sure to check the oil type and prepare the items needed
before adding oil.
Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.
Engine oil consumption
The amount of engine oil consumed depends on the oil viscosity, the quality
of the oil and the way the vehicle is driven.
More oil is consumed under driving conditions such as high speeds and fre-
quent acceleration and deceleration.
A new engine consumes more oil.
When judging the amount of oil consumption, keep in mind that the oil may
have become diluted, making it difficult to judge the true level accurately.
Oil consumption: Max. 1.0 L/1000 km (1.1 qt./600 miles, 0.9 Imp.qt./600
miles)
If your vehicle consumes more than 1.0 L (1.1 qt., 0.9 Imp.qt.) every 1000
km (600 miles), contact any authorized Lexus dealer or repairer, or another
duly qualified and equipped professional.
Engine oil selectionP. 839, 842, 844
Oil quantity
(Low  Full)1.5 L (1.6 qt., 1.3 Imp.qt.)
Items Clean funnel
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6646-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
CAUTION
Used engine oil
Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so care should
be taken to avoid prolonged and repeated contact. To remove used engine
oil from your skin, wash thoroughly with soap and water.
Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground.
Call any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional, service station or auto parts store for information
concerning recycling or disposal.
Do not leave used engine oil within the reach of children.
NOTICE
To prevent serious engine damage
Check the oil level on a regular basis.
When replacing the engine oil
Be careful not to spill engine oil on the vehicle components.
Avoid overfilling, or the engine could be damaged.
Check the oil level on the dipstick every time you refill the vehicle.
Be sure the engine oil filler cap is properly tightened.

665 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)The coolant level is satisfactory if it is between the “FULL” and
“LOW” lines on the reservoir when the engine is cold.
Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the
“LOW” line, add coolant up to the
“FULL” line. (P. 829)
Coolant selection
Only use “Toyota Super Long Life Coolant” or a similar high quality eth-
ylene glycol based non-silicate, non-amine, non-nitrite, and non-borate cool-
ant with long-life hybrid organic acid technology.
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50%
deionized water. (Minimum temperature: -35C [-31F])
For more details about engine coolant, contact any authorized Lexus dealer
or repairer, or another duly qualified and equipped professional.
If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock
and water pump.
If you cannot find a leak, have any authorized Lexus dealer or repairer, or
other duly qualified and equipped professional, test the cap and check for
leaks in the cooling system.
Engine coolant
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6666-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
CAUTION
When the engine is hot
Do not remove the engine coolant reservoir cap or the radiator cap. (P.
830)
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.
NOTICE
When adding coolant
Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.
If you spill coolant
Be sure to wash it off with water to prevent it from damaging parts or paint.

667 6-3. Do-it-yourself maintenance
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Maintenance and care
GS350/250_EE (OM30C36E)Check the radiator and condenser and clear away any foreign
objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehicle inspected by any authorized
Lexus dealer or repairer, or another duly qualified and equipped
professional.
Check the battery as follows.
Caution symbols
The meanings of each caution symbol on the top of the battery
are as follows:
Radiator and condenser
CAUTION
When the engine is hot
Do not touch the radiator or condenser as they may be hot and cause serious
injuries, such as burns.
Battery
No smoking, no naked
flames, no sparksBattery acid
Shield eyesNote operating instruc-
tions
Keep away from chil-
drenExplosive gas

669 6-3. Do-it-yourself maintenance
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Maintenance and care
GS350/250_EE (OM30C36E)
Before recharging
When recharging, the battery produces hydrogen gas which is flammable and
explosive. Therefore, observe the following 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 charger is off when connecting and dis-
connecting the charger cables to the battery.
After recharging/reconnecting the battery
The engine may not start. Follow the procedure below to initialize the sys-
tem.
Shift the shift lever to P.
Open and close any of the doors.
Restart the engine.
Unlocking the doors using the smart entry & start system may not be possi-
ble immediately after reconnecting the battery. If this happens, use the wire-
less remote control or the mechanical key to lock/unlock the doors.
Start the engine with the engine switch in ACCESSORY mode. 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 recon-
nected, 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 before
disconnect the battery. Take extra care when connecting the battery if the
engine switch mode prior to discharge is unknown.
If the system will not start even after multiple attempts, contact any autho-
rized Lexus dealer or repairer, or another duly qualified and equipped profes-
sional.
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671 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)If any washer does not work or
the warning message appears on
the multi-information display,
the washer tank may be empty.
Add washer fluid.
NOTICE
When recharging the battery
Never recharge the battery while the engine is operating. Also, be sure all
accessories are turned off.
When adding distilled water
Avoid overfilling. Water spilled during battery recharging may cause corro-
sion.
Washer fluid
CAUTION
When adding washer fluid
Do not add washer fluid when the engine is hot or running as washer fluid
contains alcohol and may catch fire if spilled on the engine etc.
NOTICE
Do not use any fluid other than washer fluid
Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces.
Diluting washer fluid
Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the washer fluid
bottle.

675 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
Initializing the tire pressure warning system
The tire pressure warning system must be initialized in the fol-
lowing circumstances:
When rotating the tires.
When the tire inflation pressure is changed such as when
changing traveling speed.
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 engine switch off.
Initialization cannot be performed while the vehicle is moving.
Adjust the tire inflation pressure to the specified cold tire infla-
tion pressure level. (P. 850)
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 engine switch to IGNITION ON mode.
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6766-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)Press and hold the tire pres-
sure warning reset switch
until the tire pressure warn-
ing light blinks slowly 3
times.
Wait for a few minutes with the engine switch in IGNITION
ON mode and then turn the engine 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 necessary to register the ID code. Have the
ID code registered by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional.
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