2012 Lexus GS350 air conditioning

431
5 5-2. Using the air conditioning system and defogger
Interior features
GS350/250_EE (OM30C36E)
Windshield wiper de-icer
Press the “MENU” button on the Remote Touch. (P. 368)
Select “Climate” on the
“Menu” screen.
ON/OFF
Select to turn on the wind-
shield wiper de-icer. The wind-
shield wiper de-icer will
automatically turn off after
approximately 15 minutes. Select-
ing again also turns the de-
icer off.
Operating conditions
The engine switch must be in the IGNITION ON mode.
: If equipped
This feature is used to prevent ice from building up on the wind-
shield and wiper blades.
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2
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CAUTION
When the windshield wiper de-icer is on
Do not touch the glass at the lower part of the windshield or to the side of
the front pillars as the surfaces can become very hot and burn you.

5465-4. Using the hands-free phone system (for cellular phone)
GS350/250_EE (OM30C36E)
When using the hands-free system
The audio system is muted when making a call.
If both parties speak at the same time, it may be difficult to hear.
If the incoming call volume is overly loud, an echo may be heard.
Try to face toward the microphone as much as possible when speaking.
In the following circumstances, it may be difficult to hear the other party:
• When driving on unpaved roads
• When driving at high speeds
• If a window is open
• If the air conditioning is blowing directly on the microphone
• If the air conditioning is set to high
• There is an effect from the network of the cellular phone
Conditions under which the system will not operate
If using a cellular phone that does not support Bluetooth®
If the cellular phone is turned off
If you are outside service range
If the cellular phone is not connected
If the cellular phone’s battery is low
When the cellular phone is not connected, “No connect” is displayed.
Bluetooth® antenna
The antenna is built into the instrument panel. If the cellular phone is behind
the seat or in the console box, or touching or covered by metal objects, con-
nection status may deteriorate.
Battery charge/Signal status
This display may not correspond exactly with the cellular phone itself.
When the cellular phone is out of the service area or in a place inaccessible
by radio waves, “No service” is displayed.
When using Bluetooth® audio and hands-free system at the same time
The following problems may occur.
The Bluetooth® connection may be cut.
Noise may be heard on the Bluetooth® audio playback.

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

6566-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
CAUTION
When working near the electric cooling fans or radiator grille
Be sure the engine switch is off.
With the engine switch in IGNITION ON mode, the electric cooling fans
may automatically start to run if the air conditioning is on and/or the cool-
ant temperature is high. (P. 667)
Safety glasses
Wear safety glasses to prevent flying or falling material, fluid spray, etc.
from getting in your eyes.
NOTICE
If you remove the air cleaner filter
Driving with the air cleaner filter removed may cause excessive engine
wear due to dirt in the air. Also, a backfire could cause a fire in the engine
compartment.
If the fluid level is low or high
It is normal for the brake fluid level to go down slightly as the brake pads
wear or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, it may indicate a serious problem.

695
6 6-3. Do-it-yourself maintenance
Maintenance and care
GS350/250_EE (OM30C36E)
Air conditioning filter
Turn the engine switch off.
Open the glove box. Lift up
the side with the stay, discon-
nect the stay tabs and remove
the partition by pulling hori-
zontally.
Press the tabs and remove the
filter cover.
Press the tabs and remove the
filter case.
The air conditioning filter must be changed regularly to maintain
air conditioning efficiency.
Removal method
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2
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6966-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)Remove the air conditioning
filter from the filter case and
replace it with a new one.
The “UP” marks shown on the
filter and the filter case should be
pointing up.
Checking interval
Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to the
“Lexus Service Booklet” or “Lexus Warranty Booklet”.)
If air flow from the vents decreases dramatically
The filter may be clogged. Check the filter and replace if necessary.
5
NOTICE
When using the air conditioning system
Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the
system.

7066-3. Do-it-yourself maintenance
GS350/250_EE (OM30C36E)
8MPX-B10
Smart entry & start system, electric tilt
and telescopic steering column, power
seats, head-up display, front right-hand
door ECU, gauges and meters, steering
sensor, yaw rate and G sensor, overhead
module, front left-hand door ECU,
power trunk lid, RR CTRL SW, clock,
body ECU, CAN gateway ECU
9DOME7.5
Personal lights, ornament lights, trunk
light, footwell lights, door courtesy
lights, vanity lights, rear door inside han-
dle illuminations, power trunk lid
10EPS80EPS
11ARS80No circuit
12HTR50Air conditioning system
13ABS NO.140VDIM
14LUG J/B ALT50Luggage compartment junction block
15PTC NO.150PTC heater
16PTC NO.250PTC heater
17ABS NO.250VDIM
18ST30Starting system
19H-LP LO30Headlights, H-LP RLY
20D/C CUT30DOME, MPX-B
21DCM7.5DCM
22ECU-B7.5Smart entry & start system
23ALT-S7.5Charging system
FuseAmpereCircuit

707 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS350/250_EE (OM30C36E)
24ETCS10Multiport fuel injection system/sequen-
tial multiport fuel injection system
25HORN10Horn
26R/B-B20EPS-B, TV
27P/I-B NO.150Headlights, daytime running lights, EBS
28EPB30Parking brake
29LUG J/B-B40Luggage compartment junction block
30FAN NO.180Electric cooling fans
31LH J/B ALT60Left-hand junction block
32H-LP CLN30Headlight cleaner
33FAN NO.240Electric cooling fans
34A/C COMP7.5Air conditioning system
35FILTER10Condenser
FuseAmpereCircuit