2020 Lexus GS350 check engine

GS350_GS F_OM_OM30J07U_(U)
5198-1. Specifications
8
Vehicle specifications
GS350
*: The engine oil capacity is a reference quantity to be used when changing the engineoil. Warm up and turn off the engine, wait more than 5 minutes, and check the oil level
on the dipstick.
■Engine oil selection
“Toyota Genuine Motor Oil” is used in your Lexus vehicle. Use Lexus
approved “Toyota Genuine Motor Oil” or equivalent to satisfy the following
grade and viscosity.
Oil grade: ILSAC GF-5 multigrade engine oil
Fuel
Fuel typeUnleaded gasoline only
Octane Rating91 (Research Octane Number 96) or higher
Fuel tank capacity (Reference)17.5 gal. (66.3 L, 14.6 Imp.gal.)
Lubrication system
GS350
2WDAWD
Oil capacity
(Drain and refill  reference
*)
With filter
Without filter
6.0 qt.
(5.7 L, 5.0 Imp.qt.)
5.8 qt.
(5.5 L, 4.8 Imp.qt.)6.8 qt.
(6.4 L, 5.6 Imp.qt.)
6.3 qt.
(6.0 L, 5.3 Imp.qt.)

520
GS350_GS F_OM_OM30J07U_(U)8-1. Specifications
Recommended viscosity: SAE 0W-20
SAE 0W-20 is the best choice for
good fuel economy and good start-
ing in cold weather.
If SAE 0W-20 is not available, SAE
5W-20 oil may be used. However, it
must be replaced with SAE 0W-20
at the next oil change.
Oil viscosity (0W-20 is explained here as an example):
• The 0W in 0W-20 indicates the characteristic of the oil which allows cold startability. Oils with a lower value be fore the W allow for easier starting of
the engine in cold weather.
• The 20 in 0W-20 indicates the viscos ity characteristic of the oil when the
oil is at high temperature. An oil with a higher viscosity (one with a higher
value) may be better suited if the vehicle is operated at high speeds, or
under extreme lo ad conditions.
How to read oil container label:
The International Lubricant Specifi-
cation Advisory Committee
(ILSAC) Certification Mark is added
to some oil containers to help you
select the oil you should use.
GS F
*: The engine oil capacity is a reference quantity to be used when changing the engine oil. Warm up and turn off the engine, wait more than 5 minutes, and check the oil level
on the dipstick.
Outside temperature
Oil capacity
(Drain and refill — reference*)
With filter
Without filter9.3 qt. (8.8 L, 7.7 Imp.qt.)
8.3 qt. (7.9 L, 7.0 Imp.qt.)

GS350_GS F_OM_OM30J07U_(U)
5238-1. Specifications
8
Vehicle specifications
*: The fluid capacity is the quantity of reference.If replacement is necessary, contact your Lexus dealer.
Electrical system
Battery
Open voltage at 68 F (20 C):12.3 V or higher
(Voltage is checked 20 minutes after the engine
and all lights are turned off.)
Charging rates5 A
Automatic transmission
Fluid capacity*
GS350 (2WD)10.0 qt. (9.5 L, 8.4 Imp.qt.)
GS350 (AWD)10.6 qt. (10.0 L, 8.8 Imp.qt.)
GS F11.8 qt. (11.2 L, 9.9 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause deterioration
in shift quality, locking up of your transm ission accompanied by vibration, and ulti-
mately damage the transmission of your vehicle.
Front differential (AWD models)
Oil capacity0.74 qt. (0.70 L, 0.62 Imp.qt.)
Oil type and viscosityToyota Genuine Differential gear oil GL-5 or equivalent
Above 0 F (-18 C): SAE90
Below 0 F (-18 C): SAE80W or SAE80W-90

574What to do if... (Troubleshooting)
GS350_GS F_OM_OM30J07U_(U)
What to do if... (Troubleshooting)
●If you lose your mechanical keys, ne w genuine mechanical keys can be made
by your Lexus dealer. ( P. 140)
●If you lose your electronic keys, the risk of vehicle theft increases significantly.
Contact your Lexus dealer immediately. ( P. 141)
●Is the electronic key battery weak or depleted? ( P. 411)
●Is the engine switch in IGNITION ON mode?
When locking the doors, turn the engine switch off. (P. 204)
●Is the electronic key left inside the vehicle?
When locking the doors, make sure that you have the electronic key on your
person.
●The function may not operate properly du e to the condition of the radio wave.
( P. 158)
●Is the child-protector lock set?
The rear door cannot be opened from in side the vehicle when the lock is set.
Open the rear door from outside and then unlock the child-protector lock.
( P. 146)
●The function to prevent the electronic key from being left inside the trunk will
operate and you can open th e trunk as usual. Take the key out from the trunk.
( P. 151)
If you have a problem, check the foll owing before contacting your Lexus
dealer.
The doors cannot be locked, unlocked, opened or closed
You lose your keys
The doors cannot be locked or unlocked
The rear door cannot be opened
The trunk lid is closed with the electronic key left inside

576What to do if... (Troubleshooting)
GS350_GS F_OM_OM30J07U_(U)
●The seat belt reminder light is flashing
Are the driver and the front passe nger wearing the seat belts? (P. 437)
●The parking brake indicator is on
Is the parking brake released? ( P. 217)
Depending on the situation, other types of warning buzzer may also sound.
( P. 435, 442)
●Did anyone inside the vehicle open a door during setting the alarm?
The sensor detects it and the alarm sounds. ( P. 79)
To stop the alarm, turn the engine switch to IGNITION ON mode or start the
engine.
●Is the electronic key left inside the vehicle or the moon roof opened?
Check the message on the multi-information display. ( P. 442)
●When a warning light turns on or a warning message is displayed, refer to
P. 435, 442.A warning buzzer sounds during driving
An alarm is activated and the horn sounds
A warning buzzer sounds when leaving the vehicle
A warning light turns on or a warning message is displayed

582Alphabetical index
GS350_GS F_OM_OM30J07U_(U)
Eco drive mode ...................................... 281
Eco Driving Indicator...............................91
Eco driving meter .................................... 98
EDR (Event data recorder) ...................10
Electric Power Steering (EPS) ....... 298Function ................................................. 298
Warning light .......................................436
Warning message ............................. 442
Electronic key ......................................... 138 Battery-saving function .................... 158
If the electronic key does not operate properly............................ 502
Replacing the battery .......................... 411
Emergency, in case of If a warning buzzer sounds...........435
If a warning light turns on...............435
If a warning message is displayed ........................................ 442
If the electronic key does not operate properly ....... 502
If the engine will not start............... 498
If the vehicle is trapped in rising water ........................................426
If the parking brake cannot be released ....................... 500
If the vehicle battery is discharged ........................................ 505
If you have a flat tire ..............473, 484
If you think something is wrong...............................................433
If your vehicle becomes stuck ...... 513
If your vehicle has to be stopped in an emergency .............................425
If your vehicle needs to be towed ....................................... 427
If your vehicle overheats ............... 509 Emergency flashers .............................424
Emergency tire puncture repair
kit ............................................................. 484
Engine Accessory mode ............................... 204
Compartment ...................................... 381
Engine switch ...................................... 203
Hood........................................................ 378
How to start the engine.................. 203
Identification number........................ 518
Ignition switch (engine switch.................................. 203
Overheating........................................ 509
Engine compartment cover............. 383
Engine coolant ...................................... 388 Capacity................................................. 522
Checking .............................................. 388
Preparing and checking before winter ....................................305
Engine coolant temperature gauge .............................................. 92, 100
Engine immobilizer system .................. 77
Engine oil ................................................. 385 Capacity...................................................519
Checking ...............................................385
Oil level warning message ........... 442
Oil pressure warning message........................... 442
Preparing and checking before winter ....................................305
E

593Alphabetical index
GS350_GS F_OM_OM30J07U_(U)
Tachometer .....................................93, 100Variable red zone............................... 103
Tail lights................................................... 222 Light switch ........................................... 222
Replacing light bulbs ..........................421
Welcome light illumination control ................................................... 144
Talk switch
*
Telephone switches*
Theft deterrent system Alarm........................................................... 79
Engine immobilizer system.............. 77
Tire inflation pressure ......................... 525 Maintenance data ............................. 525
Tire inflation pressure display function ............................................... 395
Warning light ....................................... 437
Warning message ............................. 442
Tire information ..................................... 532 Glossary .................................................537
Size ............................................................534
Tire identification number..............534
Uniform Tire Quality Grading.............................................. 536
Tire pressure warning system ......... 395 Function ................................................. 395
Initializing............................................... 396
Installing tire pressure warning valves and transmitters ............... 395
Registering ID codes .......................397
Warning light ....................................... 437
Warning message ............................. 442 Tires ........................................................... 394
Chains ..................................................... 307
Checking ............................................... 394
Emergency tire puncture repair kit .............................................. 484
If you have a flat tire .............. 473, 484
Inflation pressure................................ 525
Information............................................ 532
Replacing ............................................... 473
Rotating tires ........................................395
Size ........................................................... 525
Snow tires ..............................................309
Spare tire................................................ 473
Tire inflation pressure display function................................................395
Tire pressure warning system .....395
Warning light ....................................... 437
Warning message............................. 442
Tools ........................................................... 474
Top tether strap ....................................... 68
Torque Vectoring Differential (TVD) ..................................................... 295
Total load capacity............................... 200
Towing Dinghy towing ..................................... 202
Emergency towing ............................427
Towing eyelet ...................................... 429
Trailer towing.........................................201
TRAC (Traction Control) Function .................................................. 297
TRAC OFF switch ............................ 299
T
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.