Page 511 of 784

ES350_300h_OM_OM33B99U_(U)
5116-4. Other interior features
6
Interior features
■Conditions unfavorable to correct operation
The compass may not show the correct direction in the following conditions:
●The vehicle is stopped immediately after turning.
●The vehicle is on an inclined surface.
●The vehicle is in a place where the earth’s magnetic field is subject to interference
by artificial magnetic fields (underground car park/parking lot, under a steel tower,
between buildings, roof car park/parking lot, near an intersection, near a large
vehicle, etc.).
●The vehicle has become magnetized.
(There is a magnet or metal object near the inside rear view mirror.)
●The 12-volt battery ha s been disconnected.
●A door is open.
CAUTION
■While driving the vehicle
Do not adjust the display. Adjust the di splay only when the vehicle is stopped.
■When doing the circling calibration
Secure a wide space, and watch out for people and vehicles in the vicinity. Do not
violate any local traffic rules while performing circling calibration.
Page 521 of 784

521
ES350_300h_OM_OM33B99U_(U)
7Maintenance and care
7-1. Maintenance and careCleaning and protecting the vehicle exterior................. 522
Cleaning and protecting the vehicle interior .................. 526
7-2. Maintenance Maintenance requirements............................. 529
General maintena nce .............. 532
Emission inspection and maintenance (I/M)
programs .................................... 536
7-3. Do-it-yourself maintenance Do-it-yourself service precautions ................................ 537
Hood ................................................ 541
Positioning a floor jack ............. 542
Engine compartment ............... 545
12-volt battery (hybrid vehicles) ...................... 562
Tires .................................................. 566
Tire inflation pressure ................577
Wheels .......................................... 580
Air conditioning filter ...............582
Electronic key battery ..............584
Checking and replacing fuses ..............................................586
Light bulbs.....................................598
Page 523 of 784

ES350_300h_OM_OM33B99U_(U)
5237-1. Maintenance and care
7
Maintenance and care
■Notes for a smart access system with push-button start
If the door handle becomes wet while the electronic key is within the effective range,
the door may lock and unlock repeatedly. In that case, follow the following correc-
tion procedures to wash the vehicle:
●Place the key in a position 6 ft. (2 m) or more separate from the vehicle while the
vehicle is being washed. (Take care to ensure that the key is not stolen.)
●Set the electronic key to battery-saving mode to disable the smart access system
with push-button start. (P. 1 3 3 )
■Aluminum wheels
●Remove any dirt immediately by using a neutral detergent. Do not use hard
brushes or abrasive cleaners. Do not use strong or harsh chemical cleaners.
Use the same mild detergent and wax as used on the paint.
●Do not use detergent on the wheels when they are hot, for example after driving for
long distance in the hot weather.
●Wash detergent from the wheels immediately after use.
■Bumpers and side moldings
Do not scrub with abrasive cleaners.
Page 527 of 784

ES350_300h_OM_OM33B99U_(U)
5277-1. Maintenance and care
7
Maintenance and care
■Caring for leather areas
Lexus recommends cleaning the interior of the vehicle at least twice a year to main-
tain the quality of the vehicle’s interior.
■Shampooing the carpets
There are several commercial foaming-type cleaners available. Use a sponge or
brush to apply the foam. Rub in overlapping circles. Do not use water. Wipe dirty sur-
faces and let them dry. Excellent results are obtained by keeping the carpet as dry as
possible.
■Seat belts
Clean with mild soap and lukewarm water using a cloth or sponge. Also check the
belts periodically for excessive wear, fraying or cuts.
■When cleaning the carpeted portions of the glove box, console box, etc.
If a strong adhesive tape is used, there is a possibility that the surface of the carpet
could be damaged.
CAUTION
■Water in the vehicle
●Gasoline vehicles: Do not splash or spill liquid in the vehicle.
Doing so may cause electrical components etc. to malfunction or catch fire.
●Hybrid vehicles: Do not splash or spill liquid in the vehicle, such as on the floor
and in the hybrid battery (traction battery) air vents or in the luggage compart-
ment.
Doing so may cause the hybrid battery, electrical components, etc. to malfunc-
tion or catch fire.
●Do not get any of the SRS components or wiring in the vehicle interior wet.
( P. 4 0 )
An electrical malfunction may cause the ai rbags to deploy or not function prop-
erly, resulting in death or serious injury.
■Cleaning the interior (especially instrument panel)
Do not use polish wax or polish cleaner. The instrument panel may reflect off the
windshield, obstructing the driver’s view and leading to an accident, resulting in
death or serious injury.
Page 531 of 784
ES350_300h_OM_OM33B99U_(U)
5317-2. Maintenance
7
Maintenance and care
CAUTION
■If your vehicle is not properly maintained
Improper maintenance could result in serious damage to the vehicle and possible
death or serious injury.
■Handling of the 12-volt battery
●Engine exhaust, some of its constituents , and a wide variety of automobile com-
ponents contain or emit chemicals known to the State of California to cause can-
cer and birth defects and other reproductive harm. Work in a well ventilated area.
●Oils, fuels and fluids contained in vehicles as well as waste produced by compo-
nent wear contain or emit chemicals known to the State of California to cause
cancer and birth defects or other repr oductive harm. Avoid exposure and wash
any affected area immediately.
●12-volt battery posts, terminals and related accessories contain lead and lead
compounds which are known to cause br ain damage. Wash your hands after
handling. ( P. 5 5 7 , 5 6 2 )
Page 532 of 784

532
ES350_300h_OM_OM33B99U_(U)
7-2. Maintenance
General maintenance
Listed below are the general maintenance items that should be per-
formed at the intervals specified in the “Warranty and Service Guide”
or “Owner’s Manual Supplement”. It is recommended that any prob-
lem you notice should be brought to the attention of your Lexus dealer
or qualified service shop for advice.
Engine compartment
ItemsCheck points
12-volt battery (gasoline vehicles)Check the battery fluid level and
connections. ( P. 5 5 7 )
Brake fluidIs the brake fluid at the correct level?
( P. 5 5 6 )
Engine coolant (gasoline vehicles)Is the engine coolant at the correct
level? ( P. 5 5 3 )
Engine/power control unit coolant
(hybrid vehicles)Is the engine/power control unit coolant
at the correct level? ( P. 5 5 3 )
Engine oilIs the engine oil at the correct level?
( P. 5 4 8 )
Exhaust systemThere should not be any fumes or
strange sounds.
Radiator/condenserThe radiator and condenser should be
free from foreign objects. ( P. 555)
Wa s h e r f l u i dIs there sufficient washer fluid?
( P. 5 6 1 )
Luggage compartment
ItemsCheck points
12-volt battery (hybrid vehicles)Check the connections. ( P. 5 6 2 )
Page 536 of 784

536
ES350_300h_OM_OM33B99U_(U)
7-2. Maintenance
Emission inspection and maintenance (I/M)
programs
The OBD system determines that a problem exists somewhere in the
emission control system. Your vehicl e may not pass the I/M test and may
need to be repaired. Contact your Lexus dealer to service the vehicle.
●When the 12-volt battery is disconnected or discharged
Readiness codes that are set dur ing ordinary driving are erased.
Also, depending on your driving ha bits, the readiness codes may not be
completely set.
●When the fuel tank cap is loose
The malfunction indicator lamp co mes on indicating a temporary mal-
function and your vehicle may not pass the I/M test.
The error code in the OBD system will no t be cleared unless the vehicle is
driven 40 or more times.
Contact your Lexus dealer to prepare the vehicle for re-testing.
Some states have vehicle emission in spection programs which include
OBD (On Board Diagnostics) checks . The OBD system monitors the
operation of the emission control system.
If the malfunction indicator lamp comes on
Your vehicle may not pass the I/M test in the following situations:
When the malfunction indicator lamp still remains on after several
driving trips
If your vehicle does not pass the I/M test
Page 537 of 784

537
ES350_300h_OM_OM33B99U_(U)
7-3. Do-it-yourself maintenance
7
Maintenance and care
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the correct
procedure as given in these sections.
ItemsPa r t s a n d t o o l s
12-volt battery condition
(gasoline vehicles) (P. 5 5 7 )
•Warm water
•Baking soda
•Grease
• Conventional wrench
(for terminal clamp bolts)
•Distilled water
12-volt battery condition
(hybrid vehicles) ( P. 5 6 2 )•Grease
• Conventional wrench (for terminal
clamp bolts)
Brake fluid level ( P. 5 5 6 )
• FMVSS No.116 DOT 3 or SAE J1703
brake fluid
•Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant level
(gasoline vehicles) ( P. 5 5 3 )
• “Toyota Super Long Life Coolant” or
a similar high quality ethylene glycol-
based non-silicate, non-amine, non-
nitrite and non-borate coolant with
long-life hybrid organic acid technol-
ogy
For the U.S.A.:
“Toyota Super Long Life Coolant” is
pre-mixed with 50% coolant and
50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is
pre-mixed with 55% coolant and
45% deionized water.
• Funnel (used only for adding coolant)
Engine/power control unit coolant level
(hybrid vehicles) ( P. 5 5 3 )