Page 423 of 588
4237-3. Do-it-yourself maintenance
7
Maintenance and care
IS250_EE(OM53C51E)
■Battery exterior
Make sure that the battery terminals are not corroded and that there are no
loose connections, cracks, or loose clamps.
Te r m i n a l s
Hold-down clamp
■Checking battery fluid
Check that the level is between the “UPPER LEVEL” and “LOWER LEVEL”
lines.
“UPPER LEVEL” line
“LOWER LEVEL” line
If the fluid level is at or below the
“LOWER LEVEL” line, add distilled
water.
■Adding distilled water
Remove the vent plug.
Add distilled water.
If the “UPPER LEVEL” line cannot be
seen, check the fluid level by looking
directly at the cell.
Put the vent plug back on and close it securely.
1
2
1
2
1
Low O.K.2
3
Page 511 of 588
5118-2. Steps to take in an emergency
8
When trouble arises
IS250_EE(OM53C51E)
Connect the hose to the valve.
Screw the end of the hose clockwise as
far as possible.
Make sure that the compressor
switch is off.
Remove the power plug from the
compressor.
4
5
6
Page 512 of 588
5128-2. Steps to take in an emergency
IS250_EE(OM53C51E)
Connect the power plug to the
power outlet socket. (→P. 399)
Remove the sticker.
Attach the 2 stickers as shown.
Remove any dirt and moisture from the
wheel before attaching the label. If it is
impossible to attach the label, make sure
to tell any authorized Lexus dealer or
repairer, or another duly qualified and
equipped professional when you have
them repair and replace the tire that
sealant is injected.
7
8
9
Page 515 of 588
5158-2. Steps to take in an emergency
8
When trouble arises
IS250_EE(OM53C51E)
With the compressor switch off, disconnect the hose from the valve on the tire
and then pull out the power plug from the power outlet socket.
Some sealant may leak when the hose is removed.
Install the valve cap onto the valve of the emergency repaired tire.
Attach the air release cap to the end
of the hose.
If the air release cap is not attached, the
sealant may leak and the vehicle may
get dirty.
Temporarily store the bottle in the luggage compartment while it is connected
to the compressor.
To spread the liquid sealant evenly within the tire, immediately drive safely for
about 5 km (3 miles) below 80 km/h (50 mph).
After driving for about 5 km (3
miles), stop your vehicle in a safe
place on a hard, flat surface and
remove the air release cap from the
hose before reconnecting the repair
kit.
15
16
17
18
19
20
Page 543 of 588
543
9 9-1. Specifications
Vehicle specifications
IS250_EE(OM53C51E)
■Spark plug
Cooling system
Capacity 10.5 L (11.1 qt., 9.2 Imp. qt.)
Coolant type
Use either of the following:
• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-based non-silicate, non-
amine, non-nitrite, and non-borate coolant with long-life hybrid
organic acid technology
Do not use plain water alone.
Ignition system
Make DENSO FK20HBR11
Gap1.1 mm (0.043 in.)
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.
Page 581 of 588

581Alphabetical index
IS250_EE(OM53C51E)
Sensor
Automatic headlight system......... 207
Automatic High Beam system...... 212
Inside rear view mirror......................162
Intrusion sensor and tilt sensor ...... 86
LDA (Lane Departure Alert).........241
Lexus parking assist-sensor ......... 247
Radar sensor ................ 236, 272, 282
Rain-sensing windshield
wipers.....................................................219
Service reminder indicators................90
Shift lever....................................................197
Automatic transmission ....................197
If the shift lever cannot be
shifted from P ................................... 523
Shift lock system .................................... 523
Shift position and gear position.......... 95
Side airbags..................................................41Side mirrors ..............................................163
Adjusting and folding ........................ 163
BSM (Blind Spot Monitor) ........... 278
Linked mirror function when
reversing ..............................................165
Mirror position memory ....................151
Side turn signal lights .......................... 203
Replacing light bulbs ......................... 461
Turn signal lever................................. 203
Slip indicator............................................477
Smart entry & start system ................ 130
Antenna location .................................130
Entry functions ............................. 118, 125
Starting the engine.............................. 192
SMS (Short message service)......... 353
Snow mode .............................................. 198
Snow tires ................................................ 290
Spare tire ................................................. 496
Inflation pressure ............................... 546
Storage location................................. 497
Spark plug ............................................... 543
Specifications ......................................... 538
Speech command system ................ 373