2015 Lexus GS350 service interval

3
California Emission Control Warranty .........................................28
Tire Limited Warranty.........................................................34
Your Responsibilities
Operation and Maintenance ..................................................35
Obtaining Warranty Service .................................................. 37
MAINTENANCE INFORMATION
Introduction
The Importance of Scheduled Maintenance ...................................39
Maintenance and Lexus Warranty Coverage ..................................40
Lexus Dealership Service .....................................................41
General Maintenance and Regular Use ....................................... 42
Scheduled Maintenance Log
Determining Your Maintenance Interval: Months vs. Mileage ..................44
Special Operating Conditions ................................................44
Complimentary First Scheduled Maintenance Service ........................ 45
Complimentary Second Scheduled Maintenance Service .....................46
Scheduled Maintenance Log..................................................48
Explanation of Maintenance Items ............................................68
Vehicle Identification.......................................................... 72
INDEX ..................................................................... 73

TABLE OF CONTENTS

40Introduction
MAINTENANCE AND LEXUS WARRANTY COVERAGE
MAINTENANCE
Maintaining your vehicle according
to the recommendations in this
booklet is required to ensure that
your warranty coverage remains
intact. You should keep detailed
records of vehicle maintenance,
including date of service, mileage
at time of service and a description
of service and/or parts installation
performed. The maintenance logs
in this booklet are a good place to
record this information. If you sell
your vehicle, be sure to give your
maintenance records to the
new owner.
Lexus will not deny a warranty claim
solely because you do not have records
to show that you maintained your
vehicle. However, damage or failures
caused by lack of proper maintenance
are not covered under warranty.Maintenance and repair services may
be performed by you or by any auto-
motive service provider you choose.
Lexus will not deny a warranty claim
solely because you used a service
provider other than a Lexus dealer-
ship for maintenance and repairs.
However, damage or failures caused
by improper maintenance or repairs
are not covered under warranty.
Your dealer may recommend more
frequent maintenance intervals or
more maintenance services than
those listed in the scheduled mainte-
nance log. These additional services
are not required to maintain your
warranty coverage. Ask your dealer
for an explanation of any recom-
mended maintenance not included
in the scheduled maintenance log.
For a complete description of
Lexus warranty coverages, see
pages 16–33 of this booklet.

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.

68
EXPLANATION OF MAINTENANCE ITEMS
MAINTENANCE
Scheduled Maintenance Log
The following descriptions are provided
to give you a better understanding of
the maintenance services that should
be performed on your vehicle. The
scheduled maintenance log indicates
at which time/mileage intervals each
service should be performed. Please
note that many maintenance services
should be performed only by a
qualified technician.
Axle Shaft Boots
Check the axle shaft boots and
clamps for cracks, deterioration
and damage. Replace any damaged
parts and, if necessary, repack
the grease. A qualified technician
should perform these operations.
Ball Joints and Dust Covers
Check the suspension and steering
linkage ball joints for looseness
and damage. Check all dust covers
for deterioration and damage. A
qualified technician should perform
these inspections.
Body Inspection
Visually check for corrosion, scratches
and other damage. Check outer
body panels, inner panels of the
hood and doors, and underneath the
vehicle. Apply touch-up paint to any
chips and scratches or have them
repaired by a qualified technician.
Brake Fluid
Replace using fluid type specified in
your Owner’s Manual. A qualified tech-
nician should perform this operation.
Brake Lines and Hoses
Visually inspect for proper installation.
Check for chafing, cracks, deterioration
and signs of leakage. Replace any
deteriorated or damaged parts.
A qualified technician should perform
these operations.
Brake Pads, Calipers and Rotors
Check brake pads and rotors for
excessive wear; check brake rotors for
runout. Check brake calipers for fluid
leakage. Some models are equipped
with directional rotors. When servicing
these rotors, reinstall at same location.
A qualified technician should perform
these operations.
For further information on
maintenance services that you
can perform yourself, see the
maintenance sections of your
Owner’s Manual.

69
EXPLANATION OF MAINTENANCE ITEMS
MAINTENANCE
Scheduled Maintenance Log
Cabin Air Filter
Replace at specified intervals. More
frequent replacement may be required
when driving in dusty conditions,
heavy traffic areas, urban areas, desert
areas or dirt roads. Refer to your
Owner’s Manual for service details.
Differential Oil
Inspect each differential component for
signs of leakage. If you discover any
leakage, have it repaired immediately
by a qualified technician. Refer to your
Owner’s Manual for fluid specifications.
Drive Belt
Inspect for cracks, excessive wear
and oiliness. Check the belt tension
and adjust if necessary. Replace the
belt if it is damaged.
Driver’s Floor Mat
•
Only use the driver’s floor mat
de signed specifically for the model
and model year of your vehicle,
such as Lexus Genuine floor mats.
• Always properly secure the
driver’s floor mat using the
retaining hooks.
• Never install another floor mat
on top of the existing driver’s
floor mat.
• Never install the driver’s floor
mat upside down.
Engine Air Filter
Check for excessive dirt, damage
and oiliness. Replace if necessary.
Engine Coolant
When inspecting, visually check
the engine coolant level on the
see-through reservoir. Add coolant
as necessary. When replacing,
drain the cooling system and refill
with coolant. Always use Genuine
Toyota Super Long-Life Coolant
or similar high-quality non-silicate,
non-amine, non-nitrate, non-borate
ethylene-glycol coolant with long-life
hybrid organic acid technology
(i.e., a combination of low phosphates
and organic acids). Check that the
radiator is not blocked with leaves,
dirt or insects and clean if necessary.
Also check the hose connection for
cor rosion and condition of installation.
A qualified technician should perform
these operations.
Note: Initial replacement is at
120 months/100,000 miles.
Replace every 60 months/
50,000 miles thereafter.

71
EXPLANATION OF MAINTENANCE ITEMS
MAINTENANCE
Scheduled Maintenance Log
Spark Plugs
Replace at specified interval. Install
new plugs of the same type as origi-
nally equipped. A qualified technician
should perform this operation.
Steering Linkage and Boots
With the vehicle stopped, check for
excessive freeplay in the steering wheel.
Inspect the linkage for bending and
damage and the dust boots for deterio-
ration, cracks and damage. Replace any
damaged parts. A qualified technician
should perform these operations.
Timing Chain
The timing chain requires no
periodic inspection.
Tire Rotation
See your Owner’s Manual for tire
rotation requirements. Check tire
pressure and check tires for damage
and uneven wear. If the vehicle is
equipped with a spare tire, check the
condition and pressure of the spare.
Tire-Pressure Warning Sensors
A tire-pressure sensor is mounted on
each full-size wheel. These sensors
do not require periodic maintenance.
When a sensor’s long-life lithium battery
becomes discharged, the battery should
be replaced by a qualified technician
following procedures in Lexus service
and repair publications.
Transmission/Transfer Case
Inspect transmission/transfer case for
signs of leakage. If you discover any
leakage, have it repaired immediately
by a qualified technician.
Note: The trans mission/transfer case
and transmission fluid are a completely
sealed unit. Therefore, periodic checks
and replacement of the transmission
fluid are not required, and there is no
dipstick on the transmission. Any repairs
that require adding or replacing fluid
should be performed by a qualified
technician following procedures in
Lexus service and repair publications.
Wiper Blades
The wiper blades should not show
any signs of cracking, splitting, wear,
contamination or deformation. The
wiper blades should clear the wind-
shield without streaking or skipping.

INDEX
Axle shaft boots ....................................................... 48–67,* 6 8
Ball joints and dust covers ............................................. 48–67,* 6 8
Body inspection ....................................................... 48–67,* 6 8
Body repairs......................................................................7
Brakes
Fluid...................................................................42, 68
Lines and hoses .................................................. 48–67,* 6 8
Pads, calipers and rotors ......................................... 48–67,* 6 8
Cabin air filter ......................................................... 48–67,* 69
Complimentary services
Maintenance services ..............................................4, 45–46
Other services ...........................................................5–6
Differential oil ......................................................... 48–67,* 69
Dispute resolution .........................................................9–13, 21
Drive belt.............................................................. 48–67,* 69
Driver’s floor mat...................................................... 48–67,* 69
Emergency repairs ......................................................... 37–38
Engine air filter ........................................................ 48–67,* 69
Engine coolant .................................................... 42, 48–67,* 69
Engine oil and oil filter ............................................. 42, 48–67,* 70
Exhaust pipes and mountings.......................................... 48–67,* 70
Fuel lines and connections, fuel tank band and
fuel tank vapor vent system hoses ..................................... 48–67,* 70
Fuel tank cap gasket................................................... 48–67,* 70
Inspections, general maintenance ..........................................42–43
*See scheduled maintenance log for maintenance interval.
73

74
INDEX
Keys..............................................................................8
Lexus Personalized Settings................................................1, 4, 45
Loaner vehicle....................................................................5
Maintenance
As related to warranty coverage ..........................25, 29, 31, 35, 40
Complimentary first and second services ..........................4, 45–46
Explanation of maintenance items . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .68–71
General maintenance and inspections ................................42–43
Importance of maintenance ............................................... 39
Maintenance intervals..................................................... 44
Scheduled maintenance log...........................................48–67
Where to obtain maintenance.......................inside front cover, 35, 41
Nuts and bolts on chassis.............................................. 48–67,* 70
Oil change ............................................................ 48–67,* 70
Owner responsibilities .........................................25, 29, 31, 35–38
Parts replacement................................................7, 16, 25, 32, 36
Pre-delivery service...............................................................1
Quality control ...................................................................7
Rack-and-pinion assembly ............................................ 48–67,* 70
Road test .............................................................. 48–67,* 70
Roadside assistance ............................................................1, 6
Service agreements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Service history ...................................................................7
Smog-check tests .......................................................... 26, 32
Spark plugs..............................................................55, 63, 71
*See scheduled maintenance log for maintenance interval.