2011 LEXUS RX350 Owners Manual

572
5-2. Steps to take in an emergency
Install the spare tire and loosely tighten each wheel nut by hand
by approximately the same amount.
Vehicles with a compact spare tire
Tighten the nuts until the tapered
portion comes into loose contact
with the disc wheel seat.
Vehicles with a full-size spare tire
Turn the nuts until the washers
come into contact with the wheel.
Lower the vehicle.
STEP2
Disc wheel
seat
Tapered portion
Wheel nut
Was h e r
Disc wheel
STEP3

5

When trouble arises
573
5-2. Steps to take in an emergency
Firmly tighten each wheel nut two
or three times in the order shown
in the illustration.
Tightening torque:
76 ft

574
5-2. Steps to take in an emergency
CAUTION
nUsing the tire jack
Improper use of the tire jack may cause the vehicle to suddenly fall off the jack,
leading to death or serious injury.
lDo not use the tire jack for any purpose other than replacing tires or installing and
removing tire chains.
lOnly use the tire jack that comes with this vehicle for replacing a flat tire.
Do not use it on other vehicles, and do not use other tire jacks for replacing tires
on this vehicle.
lAlways check that the tire jack is securely set to the jack point.
lDo not put any part of your body under the vehicle is supported by the jack.
lDo not start or run the engine while your vehicle while it is supported by the jack.
lDo not raise the vehicle while someone is in it.
lWhen raising the vehicle, do not put an object on or under the jack.
lDo not raise the vehicle to a height greater than that required to replace the tire.
lUse a jack stand if it is necessary to get under the vehicle.
Take particular care when lowering the vehicle to ensure that no one working on or
near the vehicle may be injured.
nReplacing a flat tire
Observe the following precautions to reduce the risk of death or serious injury:
lDo not touch the disc wheels or the area around the brakes immediately after the
vehicle has been driven.
After the vehicle has been driven the disc wheels and the area around the brakes
will be extremely hot. Touching these areas with hands, feet or other body parts
while changing a tire, etc. may result in burns.
lNever use oil or grease on the wheel bolts or wheel nuts.
Oil and grease may cause the wheel nuts to be excessively tightened, leading to
bolt or disc wheel damage. In addition, the oil or grease can cause the wheel nuts
to loosen and the wheel may fall off, causing a serious accident. Remove any oil or
grease from the wheel bolts or wheel nuts.

5

When trouble arises
575
5-2. Steps to take in an emergency
CAUTION
lHave the wheel nuts tightened with a torque wrench to 76 ft

576
5-2. Steps to take in an emergency
CAUTION
Also, not only can the following system not be utilized fully, but it may even nega-
tively affect the drive-train components:
lAWD system (if equipped)
nSpeed limit when using the compact spare tire
Do not drive at speeds in excess of 50 mph (80 km/h) when a compact spare tire is
installed on the vehicle.
The compact spare tire is not designed for driving at high speeds. Failure to observe
this precaution may lead to an accident causing death or serious injury.
NOTICE
nDo not drive the vehicle with a flat tire
Do not continue driving with a flat tire.
Driving even a short distance with a flat tire can damage the tire and the wheel
beyond repair.
nBe careful when driving over bumps with the compact spare tire installed on the
vehicle.
The vehicle becomes lower when driving with the compact spare tire compared to
when driving with standard tires. Be careful when driving over uneven road sur-
faces.
nDriving with tire chains and the compact spare tire
Do not fit tire chains to the compact spare tire.
Tire chains may damage the vehicle body and adversely affect driving performance.
nWhen replacing the tires
When removing or fitting the wheels, tires or the tire pressure warning valve and
transmitter, contact your Lexus dealer as the tire pressure warning valve and trans-
mitter may be damaged if not handled correctly.
nTo avoid damage to the tire pressure warning valves and transmitters
When a tire is repaired with liquid sealants, the tire pressure warning valve and
transmitter may not operate properly. If a liquid sealant is used, contact your Lexus
dealer or other qualified service shop as soon as possible. Make sure to replace the
tire pressure warning valve and transmitter when replacing the tire. (→P. 4 7 9 )

5

When trouble arises
577
5-2. Steps to take in an emergency
If the engine will not start
If the engine will not start even though correct starting procedures are
being followed (→P. 153), consider each of the following points.
nThe engine will not start, even though the starter motor operates
normally.
One of the following may be the cause of the problem:
lThere may not be sufficient fuel in the vehicle’s tank.
Refuel the vehicle.
lThe engine may be flooded.
Try to restart the engine again following correct starting proce-
dures. (→P. 1 5 3 )
lThere may be a malfunction in the engine immobilizer system.
(→P. 1 0 1 )
nThe starter motor turns over slowly, the interior lights and head-
lights are dim, or the horn does not sound or sounds at a low vol-
ume.
One of the following may be the cause of the problem:
lThe battery may be discharged. (→P. 584)
lThe battery terminal connections may be loose or corroded.
nThe starter motor does not turn over.
The engine starting system may be malfunctioning due to an electri-
cal problem such as an open circuit or a blown fuse. However, an
interim measure is available to start the engine. (→P. 5 7 8 )

578
5-2. Steps to take in an emergency
Emergency start function
When the engine does not start, the following steps can be used as an
interim measure to start the engine if the “ENGINE START STOP” switch
is functioning normally:
Set the parking brake.
Shift the shift lever to P.
Turn the “ENGINE START STOP” switch to ACCESSORY
mode.
Press and hold the “ENGINE START STOP” switch for about 15
seconds while depressing the brake pedal firmly.
Even if the engine can be started using the above steps, the system may
be malfunctioning. Have the vehicle inspected by your Lexus dealer.
nThe starter motor does not turn over, the interior lights and head-
lights do not turn on, or the horn does not sound.
One of the following may be the cause of the problem:
lOne or both of the battery terminals may be disconnected.
lThe battery may be discharged. (→P. 584)
lThere may be a malfunction in the steering lock system.
Contact your Lexus dealer if the problem cannot be repaired, or if
repair procedures are unknown.
STEP1
STEP2
STEP3
STEP4

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When trouble arises
579
5-2. Steps to take in an emergency
If the shift lever cannot be shifted from P
If the shift lever cannot be shifted with your foot on the brake pedal, there
may be a problem with the shift lock system (a system to prevent accidental
operation of the shift lever). Have the vehicle inspected by your Lexus
dealer immediately.
The following steps may be used as an emergency measure to ensure that
the shift lever can be shifted:
Set the parking brake.
Turn the “ENGINE START STOP” switch to ACCESSORY
mode.
Depress the brake pedal.
Pry the cover up with a flathead
screwdriver or equivalent.
Press the shift lock override but-
ton.
The shift lever can be shifted
while the button is pressed.
STEP1
STEP2
STEP3
STEP4
STEP5