2011 LEXUS RX350 engine coolant

5

When trouble arises
531
5-1. Essential information
If you think something is wrong
If you notice any of the following symptoms, your vehicle probably needs
adjustment or repair. Contact your Lexus dealer as soon as possible.
nVisible symptoms
lFluid leaks under the vehicle.
(Water dripping from the air conditioning after use is normal.)
lFlat-looking tires or uneven tire wear
lEngine coolant temperature gauge needle continually points
higher than normal.
nAudible symptoms
lChanges in exhaust sound
lExcessive tire squeal when cornering
lStrange noises related to the suspension system
lPinging or other noises related to the engine
nOperational symptoms
lEngine missing, stumbling or running rough
lAppreciable loss of power
lVehicle pulls heavily to one side when braking
lVehicle pulls heavily to one side when driving on a level road
lLoss of brake effectiveness, spongy feeling, pedal almost touches
the floor

5

When trouble arises
587
5-2. Steps to take in an emergency
If your vehicle overheats
If your engine overheats:
Stop the vehicle in a safe place and turn off the air conditioning
system.
Check to see if steam is coming out from under the hood.
If you see steam:
Stop the engine. Carefully lift the hood after the steam sub-
sides and then restart the engine.
If you do not see steam:
Leave the engine running and carefully lift the hood.
Remove the engine compartment cover. (→P. 464)
Check to see if the cooling fan is operating.
If the fan is operating:
Wait until the temperature of the engine (shown on the instru-
ment panel) begins to fall and then stop the engine.
If the fan is not operating:
Stop the engine immediately and call your Lexus dealer.
After the engine has cooled
down sufficiently, check the
engine coolant level and inspect
the radiator core (radiator) for
any leaks.
STEP1
STEP2
STEP3
STEP4
STEP5

588
5-2. Steps to take in an emergency
nOverheating
If you observe the following, your vehicle may be overheating:
lThe engine coolant temperature gauge enters the red zone or a loss of power is
experienced.
lSteam comes out from under the hood.
CAUTION
nTo prevent an accident or injury when inspecting under the hood of your vehicle
lIf steam is seen coming from under the hood, do not open the hood until the
steam has subsided. The engine compartment may be very hot, causing serious
injuries such as burns.
lKeep hands and clothing away from the fans and drive belt while the engine is
running.
lDo not loosen the radiator cap while the engine and radiator are hot.
Serious injury, such as burns, may result from hot coolant and steam released
under pressure.
Add engine coolant if neces-
sary.
Water can be used in an emer-
gency if engine coolant is
unavailable. (→P. 599)
Have the vehicle inspected at the nearest Lexus dealer as soon as pos-
sible.
STEP6

5

When trouble arises
589
5-2. Steps to take in an emergency
NOTICE
nWhen adding engine coolant
Wait until the engine has cooled down before adding engine coolant.
When adding coolant, do so slowly. Adding cool coolant to a hot engine too quickly
can cause damage to the engine.

615
6-1. Specifications
6

Vehicle specifications
Warning: The temperature grades for this tire are established for a tire that
is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive loading, either separately or in
combination, can cause heat buildup and possible tire failure.
Glossary of tire terminology
Tire related termMeaning
Cold tire inflation pres-
sure
Tire pressure when the vehicle has been parked for
three hours or more, or has not been driven more
than 1 mile or 1.5 km under that condition
Maximum inflation pres-
sure
The maximum cold inflated pressure to which a tire
may be inflated, shown on the sidewall of the tire
Recommended inflation
pressure
Cold tire inflation pressure recommended by a man-
ufacturer
Accessory weight
The combined weight (in excess of those standard
items which may be replaced) of automatic transmis-
sion, power steering, power brakes, power windows,
power seats, radio and heater, to the extent that these
items are available as factory-installed equipment
(whether installed or not)
Curb weight
The weight of a motor vehicle with standard equip-
ment, including the maximum capacity of fuel, oil and
coolant, and if so equipped, air conditioning and
additional weight optional engine
Maximum loaded vehicle
weight
The sum of:
(a) Curb weight
(b) Accessory weight
(c) Vehicle capacity weight
(d) Production options weight
Normal occupant weight150 lb. (68 kg) times the number of occupants speci-
fied in the second column of Table 1* that follows

655
Alphabetical index
Electric power steering ....................... 231
Electronic features control ................ 173
Electronic key
If the electronic key does not
operate properly ............................. 581
Emergency flasher switch .................524
Emergency, in case of
If the electronic key does not
operate properly ............................. 581
If the engine will not start ................577
If the shift lever cannot be
shifted from P ................................... 579
If the vehicle has a
discharged battery ........................ 584
If a warning buzzer sounds .......... 535
If a warning light turns on .............. 535
If a warning message is
displayed ............................................ 545
If you have a flat tire ........................ 564
If you lose your keys ....................... 580
If you think something is
wrong..................................................... 531
If your vehicle becomes stuck ....590
If your vehicle has to be stopped
in an emergency...............................591
If your vehicle needs to be
towed ................................................... 525
If your vehicle overheats................ 587
Engine
Accessory mode................................. 153
Compartment......................................463
Engine switch ........................................ 153
Hood ....................................................... 460
How to start the engine ................... 153
Identification number ...................... 595
If the engine will not start................ 577
Ignition switch ....................................... 153
Overheating ........................................ 587
Engine compartment cover ............. 464
Engine coolant
Capacity ................................................ 599
Checking ...............................................470
Preparing and checking
before winter ....................................254
Engine coolant temperature
gauge....................................................... 166
Engine immobilizer system..................101
Engine oil
Capacity .................................................597
Checking .............................................. 466
Preparing and checking
before winter ....................................254
Engine oil maintenance data............468
EPS .............................................................. 231
Event data recorder ............................533
E

665
What to do if...
What to do if...
A tire puncturesP. 5 6 4If you have a flat tire
The engine does not start
P. 5 7 7If the engine will not start
P. 1 0 1Engine immobilizer system
P. 5 8 4If the battery is discharged
The shift lever cannot be
moved outP. 5 7 9
If the shift lever cannot be shifted
from P
The engine coolant temperature
gauge enters the red zone
Steam can be seen coming
from under the hood
P. 5 8 7If your vehicle overheats
The key is lostP. 5 8 0If you lose your keys
The battery runs outP. 5 8 4If the battery is discharged
The doors cannot be lockedP. 4 7Side doors
P. 5 0Back door
The horn begins to soundP. 1 0 3Alarm
The vehicle is stuck in mud or
sandP. 5 9 0If the vehicle becomes stuck

Introduction
GENERAL MAINTENANCE AND REGULAR USE
MAINTENANCE
42
In addition to scheduled maintenance,
your Lexus requires ongoing general
maintenance such as fluid checks and
visual inspections. The recommended
guidelines for inspections are listed
below. Please refer to the “Mainte-
nance” section of the Owner’s Manual
for a detailed description of inspec-
tion procedures.
Every 30 Days
At least once every 30 days, perform
these inspections:
•Check engine oil level using
the dipstick
•Visually check engine coolant
level on the see-through
reservoir
•Visually check brake fluid level
on the see-through reservoir
•Visually check condition of
battery
•Check level of windshield
washer fluid
•Check tire pressure
•Check tires for damage
and wear
•Check installation of driver’s
floor mat
After a Car Wash
•Check installation of driver’s
floor mat
After Off-Road Driving
Whenever you drive off-road through
deep sand, mud or water, perform
these inspections daily:
•Check axle shaft boots
•Check ball joints and dust covers
•Check brake lines and hoses
•Check brake pads/rotors and
parking brake linings/drums
•Check differential oil
•Check engine air filter
•Check nuts and bolts on chassis
•Check steering linkage and
boots
•Check transfer case oil
(AWD models)
•Check transmission fluid
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