2012 Lexus GS250 service

5745-4. Using the hands-free phone system (for cellular phone)
GS350/250_EE (OM30C36E)
Inputting tones
When using phone services such as an answering service or a
bank, you can store phone numbers and code numbers in the
phonebook.
Select “0-9” on the “Call” screen.
Input the number.
If repeated tone symbols* are
stored in the phonebook, “Send”
and “Clear” are displayed on the
right side of the screen.
*: Repeated tone symbols are
symbols or numbers displayed
as p or w, that come after the
phone number.
(e.g. 056133w0123p#1)
Confirm the number displayed on the screen, and select
“Send”.
If you select “Clear”, this function will end.
To transfer a call
Select “Handset mode” to change from hands-free call to cellular
phone call. Select “Handsfree mode” to change from cellular
phone call to hands-free call.
To hang up
Select or press on the steering wheel.
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2
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5775-4. Using the hands-free phone system (for cellular phone)
5
Interior features
GS350/250_EE (OM30C36E)Select the desired message.
Select “Send”.
While the message is being sent,
a sending message screen is dis-
played.
To check the message
Messages are displayed in the appropriate connected Bluetooth® phone’s
registered mail address folder. Select the tab of the desired folder to be dis-
played.
Only received messages on the connected Bluetooth® phone can be dis-
played.
When the received message is an e-mail and “Update read status on tele-
phone” is set to “On”, “Mark as unread” or “Mark as read” can be selected.
Select “Mark as unread” to mark mails that have been read on the Blue-
tooth
® phone as unread. Conversely, select “Mark as read” to mark mails
that have not been read on the Bluetooth® phone as read. (P. 594)
Calling using SMS/MMS message
You can call using the SMS (Short Message Service)/MMS (Multimedia
Messaging Service) message sender’s phone number. (P. 568)
If the message delivery failed
If message delivery has failed, a notification will be displayed on the screen.
Select “Retry” to attempt to send the message again or select “Cancel” to
cancel.
Editing a quick reply message
You can edit the “Quick Reply Messages”. (P. 596)
New message notification
If “New message incoming” and “New message voice notification” are set to
“On”, a notification appears on the screen and a voice notification will be
heard when a new message arrives, select “Read” to check the message, also
to check the message later, select “Ignore”. When “Automatic message read-
out” is set to “On”, the message will be automatically read out. (P. 594)
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643
6Maintenance and care
GS350/250_EE (OM30C36E)
6-1. Maintenance and care
Cleaning and protecting
the vehicle exterior ......... 644
Cleaning and protecting
the vehicle interior .......... 648
6-2. Maintenance
Maintenance
requirements ................... 651
6-3. Do-it-yourself maintenance
Do-it-yourself service
precautions...................... 654
Hood ................................. 657
Positioning a floor jack ..... 658
Engine compartment ......... 660
Tires .................................. 672
Tire inflation pressure ....... 689
Wheels .............................. 691
Air conditioning filter ....... 693
Electronic key battery ....... 695
Checking and replacing
fuses ................................ 698
Light bulbs ........................ 720

651
6 6-2. Maintenance
Maintenance and care
GS350/250_EE (OM30C36E)
Maintenance requirements
Scheduled maintenance should be performed at specified intervals
according to the maintenance schedule.
For details about maintenance items and schedules, refer to the “Lexus
Service Booklet” or “Lexus Warranty Booklet”.
What about do-it-yourself maintenance?
Many of the maintenance items are easy to do yourself if you have a little
mechanical ability and a few basic automotive tools.
Note, however, that some maintenance tasks require special tools and
skills. These are best performed by qualified technicians. Even if you’re
an experienced do-it-yourself mechanic, we recommend that repairs and
maintenance be conducted by any authorized Lexus dealer or repairer, or
another duly qualified and equipped professional. Any authorized Lexus
dealer or repairer will keep a record of maintenance, which could be use-
ful should you ever require Warranty Service. Should you choose to select
a qualified and equipped professional other than an authorized Lexus
repairer to service or maintain your vehicle, we recommend that you
request that a record of maintenance be kept.
To ensure safe and economical driving, day-to-day care and regu-
lar maintenance are essential. Lexus recommends performing the
following maintenance:
Scheduled maintenance
Do-it-yourself maintenance

6526-2. Maintenance
GS350/250_EE (OM30C36E)
Where to go for service?
In order to maintain your vehicle in the best possible condition, Lexus rec-
ommends that all repairs and service operations be carried out by authorized
Lexus dealers or repairers or other duly qualified and equipped professionals.
For repairs and services covered by your warranty, please visit an authorized
Lexus dealer or repairer, who will use genuine Lexus parts in repairing any
difficulties you may encounter. There can also be advantages in utilizing
authorized Lexus dealers or repairers for non-warranty repairs and services,
as members of the Lexus network will be able to expertly assist you with any
difficulties you may encounter.
Your Lexus dealer or repairer, or another duly qualified and equipped profes-
sional will perform all of the scheduled maintenance on your vehicle reliably
and economically due to their experience with Lexus vehicles.
Does your vehicle need repairs?
Be on the alert for changes in performance and sounds, and visual tip-offs
that indicate service is needed. Some important clues are:
Engine missing, stumbling or pinging
Appreciable loss of power
Strange engine noises
A fluid leak under the vehicle (However, water dripping from the air condi-
tioning system after use is normal.)
Change in exhaust sound (This may indicate a dangerous carbon monoxide
leak. Drive with the windows open and have the exhaust system checked
immediately.)
Flat-looking tires, excessive tire squeal when cornering, uneven tire wear
Vehicle pulls to one side when driven straight on a level road
Strange noises related to suspension movement
Loss of brake effectiveness, spongy feeling brake pedal, pedal almost
touches the floor, vehicle pulls to one side when braking
Engine coolant temperature continually higher than normal (P. 9 9 )
If you notice any of these clues, take your vehicle to any authorized Lexus
dealer or repairer, or another duly qualified and equipped professional as
soon as possible. Your vehicle may need adjustment or repair.

6546-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
Do-it-yourself service precautions
If you perform maintenance by yourself, be sure to follow the cor-
rect procedure as given in these sections.
ItemsParts and tools
Battery condition (P. 667)
•Warm water
• Baking soda
•Grease
• Conventional wrench
(for terminal clamp bolts)
• Distilled water
Engine coolant level (P. 665)
•“To y o t a Super Long Life Cool-
ant” or a similar high quality eth-
ylene glycol-based non-silicate,
non-amine, non-nitrite and non-
borate coolant with long-life
hybrid organic acid technology
“Toyota Super Long Life Cool-
ant” is pre-mixed with 50% cool-
ant and 50% deionized water.
• Funnel (used only for adding
coolant)
Engine oil level (P. 662)
• “Toyota Genuine Motor Oil” or
equivalent
• Rag or paper towel
• Funnel (used only for adding
engine oil)
Fuses (P. 700)• Fuse with same amperage rating
as original

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.

689
6 6-3. Do-it-yourself maintenance
Maintenance and care
GS350/250_EE (OM30C36E)
NOTICE
Repairing or replacing tires, wheels, tire pressure warning valves, transmit-
ters and tire valve caps (vehicles with the tire pressure warning system)
When removing or fitting the wheels, tires or the tire pressure warning
valves and transmitters, contact any authorized Lexus dealer or repairer,
or another duly qualified and equipped professional as the tire pressure
warning valves and transmitters 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 (vehi-
cles with the tire pressure warning system)
When a tire is repaired with liquid sealants, the tire pressure warning valve
and transmitter may not operate properly. If a liquid sealant is used, contact
any authorized Lexus dealer or repairer, or another duly qualified and
equipped professional or other qualified service shop as soon as possible.
Make sure to replace the tire pressure warning valve and transmitter when
replacing the tire. (P. 674)