116
2-1. Driving procedures
08_IS350/250_U_(L/O_0708)
NOTICE
■If you hear a squealing or scraping noise (brake pad wear limit indicators)
Have your Lexus dealer check and replace the brake pads as soon as possible.
The rotor damage can result if the pads are not replaced when needed.
Front brake only: Moderate levels of the brake pad and disc wear allow enhanced
front braking power. As a result, the discs may wear more quickly than conventional
brake discs. Therefore, when replacing the brake pads, Lexus recommends that you
also have the thickness of the discs measured.
It is dangerous to drive the vehicle when the wear limits of the brake pads and/or
that of the brake discs are exceeded.
■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. 3 8 4 )
■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, transmission,
differential, etc.
●Lubricant condition for the propeller shaft, bearings and suspension joints (where
possible) and the function of all joints, bearings, etc.
412
6-1. Specifications
08_IS350/250_U_(L/O_0708)
Electrical system
Differential
*: “Toyota Genuine Differential gear oil LT” is filled in your Lexus vehicle at fac-
tory fill. Use Lexus approved “Toyota Genuine Differential gear oil LT” or an
equivalent of matching quality to satisfy the above specification. Please contact
your Lexus dealer for further details.
Battery
Open voltage* at
68
°F (20°C):
12.6 12.8 V Fully charged
12.2
12.4 V Half charged
11.8
12.0 V Discharged
(*: Voltage checked 20 minutes after
the engine and all the lights are turned
off)
Charging rates5 A max.
Oil capacity
Front0.74 qt. (0.70 L, 0.61 lmp.qt.)
Rear
IS350: 1.42 qt. (1.35 L, 1.19 lmp.qt.)
IS250 (2WD models): 1.20 qt. (1.15 L, 1.01 lmp.qt.)
IS250 (AWD models):
1.10 qt. (1.05 L, 0.92 lmp.qt.)
Oil type and
viscosity*
IS250 (AWD)
Hypoid gear oil API GL-5 Above 0
°F (-18°C): SAE90
Below 0
°F (-18°C): SAE80W
or SAE80W-90
Others
“Toyota Genuine Differential
Gear Oil LT 75W-85 GL-5” or
equivalent
