2011 LEXUS RX350 ECU

507
4-3. Do-it-yourself maintenance
4

Maintenance and care
21PA N E L10 A
Switch illumination, navigation system,
headlight cleaner, windshield wiper
de-icer, seat heater, power back door,
audio system, multi-information dis-
play, air conditioning system
22TA I L10 A
Parking lights, side marker lights, tail
lights, license plate lights, front fog
lights, towing converter
23AIR SUS20 A
24P-S E AT R H30 APower seat (right-side)
25OBD7. 5 AOn-Board diagnosis
26FR DOOR25 AFront power window (right-side)
27RR DOOR25 ARear power window (right-side)
28FL DOOR25 AFront power window (left-side)
29RL DOOR25 ARear power window (left-side)
30FR WASH25 AWindshield wipers and washer
31RR WIP15 AWindshield wipers and washer
32RR WASH20 AWindshield wipers and washer
33FR WIP30 AWindshield wipers and washer
34ECU IG210 AStarter system, Intuitive parking assist,
AWD s y s t e m
35GAUGE NO. 27. 5 AStarter system
36RH S-HTR15 ASeat heater (right-side)
37LH S-HTR15 ASeat heater (left-side)
FuseAmpereCircuit

522
4-3. Do-it-yourself maintenance
CAUTION
nReplacing light bulbs
lTurn off the lights. Do not attempt to replace the bulb immediately after turning
off the lights.
The bulbs become very hot and may cause burns.
lDo not touch the glass portion of the light bulb with bare hands. Hold the bulb by
the plastic or metal portion.
If the bulb is scratched or dropped it may blow out or crack.
lFully install light bulbs and any parts used to secure them. Failing to do so may
result in heat damage, fire, or water entering the headlight unit. This may damage
the headlights or cause condensation to build up on the lens.
nDischarge headlights (if equipped)
lContact your Lexus dealer before replacing discharge headlights (including light
bulbs).
lDo not touch the discharge headlight’s high voltage socket when the headlights
are turned on.
An extremely high voltage of 20000 V will be discharged and could result in
serious injury or death by electric shock.
lDo not attempt to take apart or repair the low beam discharge headlight bulbs,
connectors, power supply circuits, or related components.
Doing so could result in electric shock and serious injury or death.
nTo prevent damage or fire
Make sure bulbs are fully seated and locked.

526
5-1. Essential information
Emergency towing
If a tow truck is not available in an
emergency, your vehicle may be
temporarily towed using a cable or
chain secured to the emergency
towing eyelet(s). This should only
be attempted on hard, surfaced
roads for short distances at low
speeds.
A driver must be in the vehicle to
steer and operate the brakes. The
vehicle’s wheels, drive train, axles,
steering and brakes must be in
good condition.
Installing towing eyelets
Remove the eyelet cover using a
flathead screwdriver.
To protect the bodywork, place a
rag between the screwdriver and
the vehicle body, as shown in the
illustration.
Insert the towing eyelet into the
hole and tighten partially by hand.
STEP1
STEP2

5

When trouble arises
527
5-1. Essential information
Tighten down the towing eyelet
securely using a wheel nut wrench.
Towing with a sling-type truck
Do not tow with a sling-type truck
to prevent body damage.
Towing with a wheel-lift type truck
From the front (2WD models)
Release the parking brake.
STEP3

5

When trouble arises
529
5-1. Essential information
If you use chains or cables to tie
down your vehicle, the angles
shaded in black must be 45°.
Do not overly tighten the tie downs
or the vehicle may be damaged.
nBefore emergency towing
Release the parking brake.
Shift the shift lever to N.
Turn the “ENGINE START STOP” switch to ACCESSORY (engine off )
or IGNITION ON (engine running) mode.
nLocation of the emergency towing eyelet
→P. 5 6 5
CAUTION
nCaution while towing
lUse extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive stress on
the emergency towing eyelets and the cables or chains. Always be cautious of the
surroundings and other vehicles while towing.
lIf the engine is not running, the power assist for the brakes and steering will not
function, making steering and braking more difficult.
nInstalling towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing eyelets may come loose during towing. This may
lead to accidents that cause serious injury or even death.
STEP1
STEP2
STEP3

5

When trouble arises
539
5-2. Steps to take in an emergency
nSRS warning light
This warning light system monitors the airbag sensor assembly, front airbag sensors,
side and curtain shield airbag sensors, curtain shield airbag sensors, driver's seat
position sensor, driver's seat belt buckle switch, front passenger occupant classifi-
cation system, “AIR BAG ON” indicator light, “AIR BAG OFF” indicator light, front
passenger's seat belt buckle switch, seat belt pretensioner assemblies, inflators,
interconnecting wiring and power sources. (→P. 1 0 9 )
nFront passenger detection sensor, passenger seat belt reminder and warning
buzzer
lIf luggage is placed on the front passenger seat, the front passenger detection
sensor may cause the warning light to flash and the warning buzzer to sound
even if a passenger is not sitting in the seat.
lIf a cushion is placed on the seat, the sensor may not detect a passenger, and the
warning light may not operate properly.
nElectric power steering system warning light
When the voltage is low or drops, the power steering warning light may come on.
nIf the malfunction indicator lamp comes on while driving
First check the following:
lIs the fuel tank empty?
If it is, fill the fuel tank immediately.
lIs the fuel tank cap loose?
If it is, tighten it securely.
The lamp will go off after several driving trips.
If the light does not go off even after several trips, contact your Lexus dealer as soon
as possible.

5

When trouble arises
567
5-2. Steps to take in an emergency
Use the hook to secure the deck
board as shown in the illustration.
Remove the jack after removing
the hook.
Vehicles with a full-size spare tire
Pull the lever upward to fold back
the front part of the deck board.
Pull on the attached hook to
extend the string.
STEP4
STEP5
STEP1
STEP2

568
5-2. Steps to take in an emergency
Pull the folded deck board upright,
and use the hook to secure the
deck board as shown in the illus-
tration.
Remove the jack after removing
the hook.
STEP3
STEP4