ECU LEXUS RX330 2006 Repair Manual

IN CASE OF AN EMERGENCY
514
CAUTION
Before driving, make sure all the tools, jack and
flat tire are securely in place in their storage
location to reduce the possibility of personal
injury during a collision or sudden braking.
IF YOUR VEHICLE BECOMESSTUCK
If your vehicle becomes stuck in snow, mud, sand, etc.,
then you may attempt to rock the vehicle free by moving
it forward and backward.
Twowheel drive models — Turn off the traction control
system to become unstuck to allow the tires to spin
enough to remove the vehicle from the obstruction. (For
details, see “Traction control system” on page 449.)
CAUTION
Do not attempt to rock the vehicle free by moving it
forward and backward if people or objects are anywhere
near the vehicle. During the rocking operation the
vehicle may suddenly move forward or backward as it
becomes unstuck, causing injury or damage to nearby
people or objects.

IN CASE OF AN EMERGENCY
520
(c) Towing with a sling type truck
NOTICE
Do not tow with a sling type truck, either from the front
or rear. This may cause body damage.
(d) Emergency towing
If towing is necessary, we recommend you to have it done
by your Lexus dealer or a commercial tow truck service.
If towing service is not available in an emergency, your
vehicle may be temporarily towed by a cable or chain
secured to the emergency towing eyelet on the front of the
vehicle. Use extreme caution when towing the vehicle.
To install the front towing eyelet, see “(e) Installing front towing
eyelet” on page 523.

IN CASE OF AN EMERGENCY
521
NOTICE
Only use specified towing eyelet; otherwise your
vehicle may be damaged.
 Never tow a vehicle from the rear with four wheels on
the ground. This may cause serious damage to the
transmission.
A driver must be in the vehicle to steer it and operate the
brakes.
Towing in this manner may be done only on hard −surfaced
roads for a short distance and at low speeds. Also, the wheels,
axles, drive train, steering and brakes must all be in good
condition.
CAUTION
Use extreme caution when towing the vehicle. Avoid
sudden starts or erratic driving maneuvers which would
place excessive stress on the emergency towing eyelet
and towing cable or chain. The eyelet and towing cable
or chain may break and cause serious injury or damage.
NOTICE
Use only a cable or chain specifically intended for use
in towing vehicles. Securely fasten the cable or chain
to the towing eyelet provided.
Before towing, release the parking brake and put the
transmission in “N”. The ignition key must be in “ACC” (engine
off) or “ON” (engine running).
CAUTION
If the engine is not running, the power assist for the
brakes and steering will not work so steering and
braking will be much harder than usual.

IN CASE OF AN EMERGENCY
522Emergency towing eyelet precautions:

Before emergency towing, check that the eyelet is not
broken or damaged and that the installation bolts are not
loose.
 Fasten the towing cable or chain securely to the eyelet.
 Do not jerk the eyelet. Apply steady and even force.
 To avoid damaging the eyelet, do not pull from the side or at
a vertical angle. Always pull straight ahead.
CAUTION
If the emergency towing eyelet is used to get out when
your vehicle becomes stuck in the mud, sand or other
condition from which the vehicle cannot be driven out
under its own power, make sure to observe the
precautions mentioned below. Otherwise, excessive
stress will be put on the eyelet and the towing cable or
chain may break, causing serious injury or damage.
If the towing vehicle can hardly move, do not forcibly
continue the towing. Contact your Lexus dealer or a
commercial tow truck service for assistance.
Tow the vehicle as straight ahead as possible.
 Keep away from the vehicle during towing.
Tips for towing a stuck vehicle:
The following methods are effective to use when your
vehicle is stuck in the mud, sand or other condition from
which the vehicle cannot be driven out under its own
power. Use extreme caution when towing the vehicle. In
addition, keep away from the vehicles and towing cable or
chain when towing.
 Remove the sand and soil in the front and the back of the
tires.
 Place stones or wood under the tires.

IN CASE OF AN EMERGENCY
523
(e) Installing front towing eyelet
1. Remove the front towing eyelet cover on the front bumper
by pushing the outside portion of the cover.
2. Use the front towing eyelet in the luggage compartment.
Secure it to the hole on the bumper by turning clockwise. (For
the eyelet location, see page 502.)

IN CASE OF AN EMERGENCY
524
3. Tighten the front towing eyelet securely by a wheel nut
wrench.
CAUTION
When installing the eyelet on the vehicle, be sure to
tighten the front eyelet securely. If the eyelet is loose,
it may come off when being towed and result in death or
serious injury.
IF YOU CANNOT SHIFT AUTOMATICTRANSMISSION SELECTOR LEVER
If you cannot shift the selector lever out of “P” position to
other positions even though the brake pedal is depressed,
use the shift lock override button as follows:
1Turn the ignition key to “LOCK”. Make sure the parking
brake is applied.
2Pry up the cover with a flathead screwdriver or equivalent.

MAINTENANCE
530Battery
Check the battery condition by the indicator color. See page
601 for additional information.
Brake fluid level
Make sure the brake fluid level is correct. See page 568 for
additional information.
Engine oil level
Check the level on the dipstick with the engine turned off and
the vehicle parked on a level spot. See page 556 for
additional
information.
Power steering fluid level
Check the level through the reservoir. The level should be in
the “HOT” or “COLD” range depending on the fluid
temperature. See page 569 for additional information.
Exhaust system
If you notice any change in the sound of the exhaust or smell
exhaust fumes, have the cause located and corrected
immediately. (See “Engine exhaust caution” on page 384.)
Vehicle interior
Items listed below should be checked regularly, e.g. while
performing periodic services, cleaning the vehicle, etc.
Lights
Make sure the headlight, stop lights, tail lights, turn signal
lights, and other lights are working. Check headlight aim.
Service reminder indicators and warning buzzers
Check that all service reminder indicators and warning buzzers
function properly.
Steering wheel
Check that it has the specified free play. Be alert for changes
in steering condition, such as hard steering, excessive free
play or strange noise.
Seats
Check that all front seat controls such as seat adjusters,
seatback recliner, etc., operate smoothly. Check that the head
restraints move up and down smoothly and that the locks hold
securely in any latched position. For folding −down rear
seatbacks, check that the latches lock securely.
Seat belts
Check that the seat belt system such as buckles, retractors
and anchors operate properly and smoothly. Make sure the
belt webbing is not cut, frayed, worn or damaged.

MAINTENANCE
531
Accelerator pedal
Check
the pedal for smooth operation and uneven pedal ef fort
or catching.
Brake pedal
Check the pedal for smooth operation and the proper
clearance and free play. Check the brake booster function.
Brakes
In a safe place, check that the brakes do not pull to one side
when applied.
Parking brake
Check that the pedal has the proper travel and that, on a safe
incline, your vehicle is held securely with only the parking brake
applied.
Automatic transmission “Park” mechanism
Check the lock release button of the selector lever for proper
and smooth operation. On a safe incline, check that your
vehicle is held securely with the selector lever in “P” position
and all brakes released.
Vehicle exterior
Items listed below should be performed from time to time,
unless otherwise specified.
Wheel nuts
When checking the tires, make sure to check the nuts for
looseness. Tighten them if necessary.
Fluid leaks
Check underneath for leaking fuel, oil, water or other fluid after
the vehicle has been parked for a while. If you smell fuel fumes
or notice any leak, have the cause found and corrected
immediately.
Doors and engine hood
Check that all side doors and back door operate smoothly and
all latches lock securely. Make sure the engine hood
secondary latch secures the hood when the primary latch is
released.

INTRODUCTION
540
Removing the engine compartment cover
Before jump starting or checking the power steering fluid,
etc. in the engine compartment, remove the engine
compartment cover as follows:
1. Push the core of the clips and remove the clips.
2. Remove the cover.
Be careful not to lose the removed plastic clips.
After checking the items, install the engine compartment
covers and insert the plastic clips in their original
positions.
When inserting the clips, do as shown above.
NOTICE
After installing the engine compartment cover, make
sure the cover is securely in its original position.

ELECTRICAL COMPONENTS
596
No.FUSEAMPERECIRCUIT
1 AIRSUS60Electronically modulated air
suspension
2 INPJ/B100
All components in “HEATER”,
“H−LP CLN”, “TAIL”, “PANEL”,
“FR FOG”, “CIG”, “RADIO NO.
2”, “ECU− ACC”, “PWR OUTLET
NO. 1”, “GAUGE NO. 1”,
“ECU− IG NO. 1”,“ FR WIP”, “RR
WIP”, “WASHER”, “SEAT HTR”,
“ECU− IG NO. 2”, “P/SEAT”,
“PWR”, “TI&TE”, “RR DOOR
LH”, “RR DOOR RH”, “MPX− B”,
“AM1”, “DOOR NO. 2”, “STOP”,
“OBD”, “FUEL OPN”, “AIRSUS”
(7.5 A), “S/ROOF”, “FR DEF”
and “RR FOG” fuses
No.FUSEAMPERECIRCUIT
3 ALT140
All components in “INP −J/B”,
“AIRSUS” (60 A), “ABS NO. 1”,
“ABS NO. 2”, “RDI FAN”, “RR
DEF”, “HEATER”, “PBD”, “H −LP
CLN/MSB”, “H− LP CLN”, “PWR
OUTLET NO. 2”, “TOWING”,
“TAIL”, “PANEL”, “FR FOG”,
“CIG”, “RADIO NO. 2”,
“ECU− ACC”, “PWR OUTLET
NO. 1”, “GAUGE NO. 1”,
“ECU− IG NO. 1”, “FR WIP”, “RR
WIP”, “WASHER”, “HEATER”,
“SEAT HTR”, “ECU −IG NO. 2”,
“P/SEAT”, “PWR”, “TI&TE”, “RR
DOOR LH”, “RR DOOR RH”,
“MPX− B”, “AM1”, “DOOR NO.
2”, “STOP”, “OBD”, “FUEL
OPN”, “AIRSUS” (7.5 A),
“S/ROOF”, “FR DEF” and “RR
FOG” fuses
4 PBD30Power back door
5 HLP
CLN/MSB30Headlight cleaner
6 HLP CLN30Headlight cleaner