2015 Lexus GS350 engine

42Introduction
GENERAL MAINTENANCE AND REGULAR USE
MAINTENANCE
In addition to scheduled maintenance,
your Lexus requires ongoing general
maintenance such as fluid checks
and visual inspections. The recom-
mended guidelines for inspections
are listed below. Please refer to
the “Mainte nance” section of the
Owner’s Manual for a detailed
description of inspection procedures.
Every 30 Days
At least once every 30 days,
perform these inspections:
• Check engine oil level using
the dipstick
• Visually check engine
coolant level on the
see-through reservoir
• Visually check brake fluid level
on the see-through reservoir
• Visually check condition
of battery
• Check level of windshield
washer fluid
• Check tire pressure
• Check tires for damage
and wear
• Check installation of
driver’s floor mat
After a Car Wash
• Check installation of
driver’s floor mat
When Cleaning the Interior
• Remove dirt and dust with a
vacuum cleaner. Wipe dirty
surfaces with a soft cloth
dampened with warm water.
• When cleaning leather interior,
remove dirt and dust with a
vacuum cleaner. Using a
sponge, apply a small amount
of neutral wool detergent mixed
in water, rubbing in a circular
motion. Wipe off any excess
detergent and let leather dry
in an open-air location.
• When cleaning carpet, remove dirt
and dust with a vacuum cleaner.
Apply a foaming-type carpet
cleaner with a sponge or brush,
allowing cleaner to work for a few
minutes to loosen dirt. Continue by
rubbing carpet in a circular motion.
Wipe off any excess cleaner with
a clean cloth. If any dirt remains,
repeat process. Best results are
obtained by keeping the carpet as
dry as possible.

44Scheduled Maintenance Log
SCHEDULED MAINTENANCE LOG
MAINTENANCE
Determining Your
Maintenance Interval:
Months vs. Mileage
Lexus recommends obtaining
scheduled maintenance for your
vehicle every six months or 5,000
miles, whichever occurs first.
For example:
• If at six months you have
driven less than 5,000 miles,
you should obtain mainte-
nance at six months; don’t
wait until 5,000 miles.
• If you drive 5,000 miles in less
than six months, you should
obtain maintenance at 5,000
miles; don’t wait until six months.
Be sure to keep an eye on your
mileage so that you obtain mainte-
nance when recommended. If you
are a low-mileage driver, mark your
calendar to remind yourself to obtain
maintenance every six months.
Special Operating Conditions
In addition to standard maintenance
items, vehicles that are driven under
special operating conditions require
further maintenance service. These
special operating conditions, which put
added demands on a vehicle, include:
• Driving on dirt roads or
on dusty roads
• Repeated trips of less than five
miles in temperatures below
32° F or 0° C
• Extensive idling and/or
low-speed driving for long
distances, such as police, taxi
or door-to-door delivery use
• Towing. Not all vehicles are
designed for towing. Please
refer to the Owner’s Manual
for details.
If you drive primarily under any
of the conditions noted, you
should replace the engine oil
and oil filter every six months
or 5,000 miles. Some of these
special operating conditions
require other maintenance
items; these items are indicated
in each maintenance chart.

46Scheduled Maintenance Log
Complimentary Second
Scheduled Maintenance
Service: 12 Months or
10,000 Miles
Lexus also provides your second
scheduled maintenance service at
no charge. The service is performed
at 12 months or 10,000 miles,
whichever occurs first. To obtain
this service, contact your Lexus
dealership. Your complimentary
service will include these items:
• Replace engine oil with
0W-20 oil; replace oil filter
• Replace cabin air filter
• Reset maintenance reminder light
• R o t a t e t i r e s
• Visually inspect brake pads,
calipers and rotors
• Inspect wiper blades
• Check installation of
driver’s floor mat
• Road-test vehicle
If you do the majority of your driving
under certain special operating condi-
tions, additional items are included in
this service. See the “12 Months or
10,000 Miles” chart on page 48.
SCHEDULED MAINTENANCE LOG
MAINTENANCE

48
SCHEDULED MAINTENANCE LOG
MAINTENANCE
Scheduled Maintenance Log
6 Months or 5,000 Miles1
❑ Inspect and adjust all fluid levels
❑ Program Lexus Personalized Settings,
if requested
❑ Reset maintenance reminder light
❑ Rotate tires3
❑ Visually inspect brake pads, calipers and rotors
❑ Inspect wiper blades
❑ Check installation of driver’s floor mat
❑ Road-test vehicle
Note: If you drive primarily under certain special
operating conditions, you should also replace
the engine oil with 0W-20 oil and replace the
oil filter. See page 44 for conditions that apply.
Some conditions require additional maintenance.
See below.
If you drive primarily under this

special operating condition, perform
these additional items:
Driving on dirt roads or on dusty roads:
❑ Inspect axle shaft boots
❑ Inspect ball joints and dust covers
❑ Inspect engine air filter
❑ Inspect steering linkage and boots
❑ Tighten nuts and bolts on chassis
Date: _______ Mileage: ________
12 Months or 10,000 Miles2
❑ Replace engine oil with 0W-20 oil;
replace oil filter
❑ Replace cabin air filter
❑ Reset maintenance reminder light
❑ Rotate tires3
❑ Visually inspect brake pads, calipers and rotors
❑ Inspect wiper blades
❑ Check installation of driver’s floor mat
❑ Road-test vehicle
If you drive primarily under this
special operating condition, perform
these additional items:
Driving on dirt roads or on dusty roads:
❑ Inspect axle shaft boots
❑ Inspect ball joints and dust covers
❑ Inspect engine air filter
❑ Inspect steering linkage and boots
❑ Tighten nuts and bolts on chassis
Date: _______ Mileage: ________
1 This service, excluding maintenance required for special operating conditions, is complimentary when performed by an
authorized Lexus dealership.
2This service is complimentary when performed by an authorized Lexus dealership.
3Applies to models with same size front and rear tires and wheels.

49
SCHEDULED MAINTENANCE LOG
MAINTENANCE
Scheduled Maintenance Log
1 Applies to models with same size front and rear tires and wheels.
18 Months or 15,000 Miles
❑ Inspect and adjust all fluid levels
❑ Replace Smart Key battery
❑ Reset maintenance reminder light
❑ Rotate tires1
❑ Visually inspect brake pads, calipers and rotors
❑ Check installation of driver’s floor mat
❑ Road-test vehicle
❑ Inspect the following:
__ Axle shaft boots
__ Ball joints and dust covers
__ Body
__ Brake lines and hoses
__ Engine coolant (see page 69)
__ Exhaust pipes and mountings
Note: If 0W-20 oil was not used at last oil change, or if you drive primarily under certain special operating
conditions, you should also replace the engine oil with 0W-20 oil and replace the oil filter. See page 44 for
conditions that apply. Some conditions require additional maintenance. See below.
If you drive primarily under this special operating condition, perform these
additional items:
Driving on dirt roads or on dusty roads:
❑ Inspect engine air filter
❑ Tighten nuts and bolts on chassis __ Front differential oil (AWD)
__ Rack-and-pinion assembly
__ Rear differential oil
__ Steering linkage and boots
__ Wiper blades
Date: __________________________ Mileage: __________________________

50
SCHEDULED MAINTENANCE LOG
MAINTENANCE
Scheduled Maintenance Log
24 Months or 20,000 Miles
❑ Replace engine oil with 0W-20 oil;
replace oil filter
❑ Replace cabin air filter
❑ Reset maintenance reminder light
❑ Rotate tires1
❑ Visually inspect brake pads, calipers and rotors
❑ Inspect wiper blades
❑ Check installation of driver’s floor mat
❑ Road-test vehicle
If you drive primarily under this
special operating condition, perform
these additional items:
Driving on dirt roads or on dusty roads:
❑ Inspect axle shaft boots
❑ Inspect ball joints and dust covers
❑ Inspect engine air filter
❑ Inspect steering linkage and boots
❑ Tighten nuts and bolts on chassis
30 Months or 25,000 Miles
❑ Inspect and adjust all fluid levels
❑ Reset maintenance reminder light
❑ Rotate tires1
❑ Visually inspect brake pads, calipers and rotors
❑ Inspect wiper blades
❑ Check installation of driver’s floor mat
❑ Road-test vehicle
Note: If 0W-20 oil was not used at last oil
change, or if you drive primarily under certain
special operating conditions, you should also
replace the engine oil with 0W-20 oil and
replace the oil filter. See page 44 for conditions
that apply. Some conditions require additional
maintenance. See below.
If you drive primarily under this
special operating condition, perform
these additional items:
Driving on dirt roads or on dusty roads:
❑ Inspect axle shaft boots
❑ Inspect ball joints and dust covers
❑ Inspect engine air filter
❑ Inspect steering linkage and boots
❑ Tighten nuts and bolts on chassis
1 Applies to models with same size front and rear tires and wheels.
Date: _______ Mileage: ________Date: _______ Mileage: ________

51
SCHEDULED MAINTENANCE LOG
MAINTENANCE
Scheduled Maintenance Log
36 Months or 30,000 Miles
❑ Replace engine oil with 0W-20 oil; replace oil filter
❑ Replace cabin air filter
❑ Replace brake fluid
❑ Replace engine air filter
❑ Replace Smart Key battery
❑ Inspect the following:
__ Axle shaft boots
__ Ball joints and dust covers
__ Body
__ Brake lines and hoses
__ Brake rotor thickness and runout
__ Engine coolant (see page 69)
__ Exhaust pipes and mountings
__ Front differential oil (AWD)
__ Fuel lines and connections, fuel tank band
and fuel tank vapor vent system hoses
If you drive primarily under this special operating condition, perform these
additional items:
Driving on dirt roads or on dusty roads:
❑ Tighten nuts and bolts on chassis __ Fuel tank cap gasket
__ Rack-and-pinion assembly
__ Rear differential oil
__ Steering linkage and boots
__ Transfer case for signs of leakage (AWD)
__ Transmission for signs of leakage
__ Wiper blades
❑ Reset maintenance reminder light
❑ Rotate tires1
❑ Visually inspect brake pads, calipers and rotors
❑ Check installation of driver’s floor mat
❑ Road-test vehicle
1 Applies to models with same size front and rear tires and wheels.
Date: __________________________ Mileage: __________________________

52
SCHEDULED MAINTENANCE LOG
MAINTENANCE
Scheduled Maintenance Log
42 Months or 35,000 Miles
❑ Inspect and adjust all fluid levels
❑ Reset maintenance reminder light
❑ Rotate tires1
❑ Visually inspect brake pads, calipers and rotors
❑ Inspect wiper blades
❑ Check installation of driver’s floor mat
❑ Road-test vehicle
Note: If 0W-20 oil was not used at last oil
change, or if you drive primarily under certain
special operating conditions, you should also
replace the engine oil with 0W-20 oil and
replace the oil filter. See page 44 for conditions
that apply. Some conditions require additional
maintenance. See below.
If you drive primarily under this
special operating condition, perform
these additional items:
Driving on dirt roads or on dusty roads:
❑ Inspect axle shaft boots
❑ Inspect ball joints and dust covers
❑ Inspect engine air filter
❑ Inspect steering linkage and boots
❑ Tighten nuts and bolts on chassis
48 Months or 40,000 Miles
❑ Replace engine oil with 0W-20 oil;
replace oil filter
❑ Replace cabin air filter
❑ Reset maintenance reminder light
❑ Rotate tires1
❑ Visually inspect brake pads, calipers and rotors
❑ Inspect wiper blades
❑ Check installation of driver’s floor mat
❑ Road-test vehicle
If you drive primarily under this
special operating condition, perform
these additional items:
Driving on dirt roads or on dusty roads:
❑ Inspect axle shaft boots
❑ Inspect ball joints and dust covers
❑ Inspect engine air filter
❑ Inspect steering linkage and boots
❑ Tighten nuts and bolts on chassis
1 Applies to models with same size front and rear tires and wheels.
Date: _______ Mileage: ________Date: _______ Mileage: ________