transmission fluid Lexus GS350 2010 Do-It-Yourself Maintenance / LEXUS 2010 GS460 GS350 OWNERS MANUAL (OM30C80U)
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2-1. Driving procedures
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
NOTICE
■If you get a flat tire while driving 
A flat or damaged tire may cause the following situations. Hold the steering wheel 
firmly and gradually press the brake pedal to slow down the vehicle.
●It may be difficult to control your vehicle.
●The vehicle will make abnormal sounds.
●The vehicle will behave abnormally.
Replace a flat tire with a new one. (P. 559)
■When encountering flooded roads
Do not drive on a road that has flooded after heavy rain etc. Doing so may cause the 
following serious damage to the vehicle.
●Engine stalling
●Short in electrical components
●Engine damage caused by water immersion
In the event that you drive on a flooded road and the vehicle is flooded, be sure to 
have your Lexus dealer check the following.
●Brake function
●Changes in quantity and quality of oil and fluid used for the engine, automatic 
transmission, transfer (4WD models), differentials, etc.
●Lubricant condition for the propeller shaft, bearings and suspension joints (where 
possible) and the function of all joints, bearings, etc. 
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2-1. Driving procedures
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
■Shift ranges and their functions
●You can choose from 8 levels (GS460) or 6 levels (GS350) of 
engine braking force.
●A lower shift range will provide greater engine braking force than a 
higher shift range, and the engine revolutions will also increase.
●If you accelerate while in ranges “1” to “7” (GS460) or “1” to “5” 
(GS350), the shift range may automatically range up in accordance 
with the vehicle’s speed.
●A higher shift range is automatically selected when the automatic 
transmission fluid temperature is high.
■“S” mode
●When the shift range is “6” (GS460) or “4” (GS350) or lower, holding the shift 
lever toward “+” sets the shift range to “8” (GS460) or “6” (GS350).
●To prevent the engine from over-revving, upshifting may automatically occur.
■Downshifting restrictions warning buzzer (in the “S” mode)
To help ensure safety and driving performance, downshifting operation may some-
times be restricted. In some circumstances, downshifting may not be possible even 
when the shift lever is operated. (The warning buzzer will sound twice.)
■When driving with the cruise control system (or dynamic radar cruise control sys-
tem)
The engine brake will not operate in the “S” mode, even when downshifting to “7”, 
“6”, “5” or “4” (GS460) or “5” or “4” (GS350). (P. 167, 171)
■Snow mode automatic deactivation
Snow mode is automatically deactivated if the “ENGINE START STOP” switch is 
turned to ACCESSORY or IGNITION ON mode after driving in snow mode. 
■If the shift lever cannot be shifted from “P”
P.  5 6 9 
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6-1. Specifications
GS_G_U (OM30C80U)
June 29, 2011 10:30 am
Automatic transmission
*: The fluid capacity is the quantity of reference. If replacement is necessary, 
contact your Lexus dealer.
Fluid capacity*
GS46011.4 qt. (10.8 L, 9.5 Imp.qt.)
GS350 (2WD) 8.3 qt. (7.9 L, 7.0 Imp.qt.)
GS350 (4WD) 10.6 qt. (10.0 L, 8.8 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transmission fluid type
Using automatic transmission fluid other than “Toyota Genuine ATF WS” may 
cause deterioration in shift quality, locking up of your automatic transmission 
accompanied by vibration, and ultimately damage the automatic transmission of 
your vehicle.