2014 Lexus GS350 COOLANT CHECK

GS350_OM_OM30D41U_(U)
832. Instrument cluster
2
Instrument cluster
■The meters and display illuminate when
The engine switch is in IGNITION ON mode.
■Instrument panel brightness adjustment
The instrument panel brightness levels when the tail lights are on and off can be
adjusted individually. However, when the surroundings are bright (daytime, etc.),
turning on the tail lights will not change the instrument panel brightness. At this time,
any adjustments made to the instrument panel brightness levels will be applied to
both settings at once.
■Limitation of brightness adjustment
The brightness of the instrument panel lights is automatically adjusted based on the
light sensor detecting how bright the surroundings are. However, if the instrument
panel brightness has been manually set to either the brightest or darkest setting, the
automatic adjustment will not be performed.
■ECO lamp and SPORT lamp
●When sport mode is selected, SPORT lamp (red) will illuminate.
●When all of the following conditions are satisfied and Eco-friendly driving, ECO
lamp (blue) will illuminate. (ECO lamp will become brighter the more Eco-friendly
driving you perform. Also, while the acceleration exceeds Zone of Eco driving,
ECO lamp turns off. [→P. 90] However, when Eco drive mode is selected, while
the acceleration exceeds Zone of Eco driving, ECO lamp does not turn off.):
• Driving with the shift lever in D
• Paddle shift switch is not operated.
• Either normal mode or Eco drive mode is selected.
• The vehicle speed is approximately 80 mph (130 km/h) or below.
■Customization
Settings (e.g. on/off operation of ECO lamp) can be changed.
(Customizable features: → P. 7 9 3 )
NOTICE
■To prevent damage to the engine and its components
●Do not let the indicator needle of the tachometer enter the red zone, which indi-
cates the maximum engine speed.
●The engine may be overheating if the engine coolant temperature gauge is in the
red zone (H). In this case, immediately stop the vehicle in a safe place, and check
the engine after it has cooled completely. ( →P. 76 1 )
GS350_OM_OM30D41U_(U).book Page 83 Monday, July 29, 2013 2:22 PM

618
GS350_OM_OM30D41U_(U)
6-2. 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
BatteryCheck the battery fluid level and
connections. ( →P. 6 3 8 )
Brake fluidIs the brake fluid at the correct level?
(→ P. 6 3 7 )
Engine coolantIs the engine coolant at the correct
level? ( →P. 6 3 4 )
Engine oilIs the engine oil at the correct level?
(→ P. 6 3 1 )
Exhaust systemThere should not be any fumes or
strange sounds.
Radiator/condenserThe radiator and condenser should be
free from foreign objects. ( →P. 6 3 6 )
Wa s h e r f l u i dIs there sufficient washer fluid?
(→ P. 6 4 1 )
GS350_OM_OM30D41U_(U).book Page 618 Monday, July 29, 2013 2:22 PM

634
GS350_OM_OM30D41U_(U)
6-3. Do-it-yourself maintenance
The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir when the engine is cold.Reservoir cap
“FULL” line
“LOW” line
If the level is on or below the “LOW”
line, add coolant up to the “FULL” line.
(→ P. 76 1 )
■Coolant selection
Only use “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 technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deionized
water. (Minimum temperature: -31 °F [-35 °C])
Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deionized
water. (Minimum temperature: -44 °F [-42 °C])
For more details about engine coolant, contact your Lexus dealer.
■If the coolant level drops within a short time of replenishing
Visually check the radiator, hoses, engine coolant reservoir caps, drain cock and
water pump.
If you cannot find a leak, have your Lexus dealer test the cap and check for leaks in
the cooling system.
Engine coolant
1
2
3
GS350_OM_OM30D41U_(U).book Page 634 Monday, July 29, 2013 2:22 PM

7627-2. Steps to take in an emergency
GS350_OM_OM30D41U_(U)The coolant level is satisfactory if it is between the “FULL” and “LOW”
lines on the reservoir.
Reservoir
“FULL”
“LOW”
Coolant inlet cap
Add coolant if necessary.
Water can be used in an emergency if
coolant is unavailable.
Start the engine and turn the air conditioning system on to check that
the radiator cooling fans operate and to check for coolant leaks from
the radiator or hoses.
The fans operate when the air conditioning system is turned on immediately after
a cold start. Confirm that the fans are operating by checking the fan sound and air
flow. If it is difficult to check these, turn the air conditioning system on and off
repeatedly. (The fans may not operate in freezing temperatures.)
If the fans are not operating:
Stop the engine immediately an d contact your Lexus dealer.
If the fans are operating:
Have the vehicle inspected at the nearest Lexus dealer.
4
1
2
3
4
5
6
7
GS350_OM_OM30D41U_(U).book Page 762 Monday, July 29, 2013 2:22 PM

832Alphabetical index
GS350_OM_OM30D41U_(U)
Emergency, in case ofIf a warning buzzer
sounds..................................................702
If a warning light turns on...............702
If a warning message is displayed .......................................... 712
If the electronic key does not operate properly ........754
If the engine will not start................ 749
If the parking brake cannot be released........................ 752
If the shift lever
cannot be shifted from P ............. 751
If the vehicle battery is
discharged ......................................... 757
If you have a flat tire ..........................736
If you think something is wrong.............................................. 700
If your vehicle becomes stuck ...................................................... 764
If your vehicle has to be stopped in an emergency ......... 693
If your vehicle needs to be towed ...................................... 694
If your vehicle overheats ..................761
Emergency flashers ............................. 692
Engine Accessory mode..................................174
Compartment ......................................629
Engine switch .........................................173
Hood ........................................................626
How to start the engine ....................173
Identification number .......................769
If the engine will not start................ 749
Ignition switch (engine switch) ..................................173
Overheating ...........................................761 Engine compartment cover............. 630
Engine coolant ...................................... 634
Capacity ..................................................772
Checking ............................................... 634
Preparing and checking before winter ....................................304
Engine coolant temperature gauge .......................................................... 81
Engine immobilizer system ..................70
Engine oil ................................................... 631 Capacity ................................................. 770
Checking .................................................631
Oil level warning message ............. 721
Oil pressure warning message............................. 713
Preparing and checking
before winter ....................................304
Engine oil maintenance data ............. 616
Engine switch........................................... 173
Enhanced VSC ......................................269
EPS (Electric Power Steering) ..............270
Function .................................................. 270
Warning light ....................................... 703
Warning message............................... 717
Event data recorder (EDR)................... 10
GS350_OM_OM30D41U_(U).book Page 832 Monday, July 29, 2013 2:22 PM