ECU Lexus GX460 2014 Do-it-yourself maintenance / LEXUS 2014 GX460 (OM60K80U) Repair Manual

422
GX460_OM_OM60K80U_(U)5-4. Using the other interior features
■Conditions unfavorable to correct operation
The compass may not show the correct direction in the following conditions:
●The vehicle is stopped immediately after turning.
●The vehicle is on an inclined surface.
●The vehicle is in a place where the earth’s ma
gnetic field is subject to interference by
artificial magnetic fields (underground car park/parking lot, under a steel tower,
between buildings, roof car park/parking lot, near an intersection, near a large vehicle,
etc.).
●The vehicle has become magnetized.
(There is a magnet or metal object near the inside rear view mirror.)
●The battery has been disconnected.
●A door is open.
CAUTION
■While driving the vehicle
Do not adjust the display. Adjust the di splay only when the vehicle is stopped.
■When doing the circling calibration
Secure a wide space, and watch out for people and vehicles in the vicinity. Do not vio-
late any local traffic rules while performing circling calibration.
NOTICE
■To avoid the compass malfunctions
Do not place magnets or any metal object s near the inside rear view mirror.
Doing this may cause the compass sensor to malfunction.
■To ensure normal operation of the compass
●Do not perform a circling calibration of the compass in a place where the earth’s
magnetic field is subject to interfer ence by artificial magnetic fields.
●During calibration, do not operate electric systems (moon roof, power windows, etc.)
as they may interfere with the calibration.

423
GX460_OM_OM60K80U_(U)5-4. Using the other interior features
5
Interior features
Garage door opener
The garage door opener (HomeLink® Universal Transceiver) is manufactured
under license from HomeLink®.
The HomeLink
® compatible transceiver in your vehicle has 3 buttons which can
be programmed to operate 3 different devices. Refer to the programming
method below appropriate for the device.
Indicator light
Buttons
■Before programming HomeLink®
●During programming, it is possible that garage doors, gates, or other devices
may operate. For this reason, make sure that people and objects are clear of
the garage door or other devices to pr event injury or other potential harm.
●It is recommended that a new battery be placed in the remote control trans-
mitter for more accurate programming.
●Garage door openers manufactured after 1995 may be equipped with rolling
code protection . If this is the case, you will need a stepladder or other sturdy,
safe device to reach the “Learn” or “S mart” button on the garage door opener
motor.
The garage door opener can be programmed to operate garage doors, gates,
entry doors, door locks, home lighting systems, security systems, and other
devices.
Programming the HomeLink®
1
2

428
GX460_OM_OM60K80U_(U)5-4. Using the other interior features
Safety Connect
Microphone
LED light indicators
“SOS” button
: If equipped
Safety Connect is a subscription-based telematics service that uses Global
Positioning System (GPS) data and embe
dded cellular technology to provide
safety and security features to subscribers. Safety Connect is supported by
Lexus’ designated response center, wh ich operates 24 hours per day, 7 days
per week.
Safety Connect service is available by su bscription on select, telematics hard-
ware-equipped vehicles.
By using the Safety Connect service, yo u are agreeing to be bound by the
Telematics Subscription Service Agreement and its Terms and Conditions, as
in effect and amended from time to time, a current copy of which is available
at Lexus.com. All use of the Safety Connect service is subject to such then-
applicable Terms and Conditions.
System components
1
2
3

444
GX460_OM_OM60K80U_(U)6-2. Maintenance
Vehicle interior
ItemsCheck points
Accelerator pedal• The accelerator pedal should move smoothly
(without uneven pedal effort or catching).
Automatic transmission
“Park” mechanism• When parked on a slope and the shift lever is in P, isthe vehicle securely stopped?
Brake pedal
• Does the brake pedal move smoothly?
• Does the brake pedal have appropriate clearance
from the floor? ( P. 5 6 1 )
• Does the brake pedal have the correct amount of
free play? ( P. 5 6 1 )
Brakes
• The vehicle should not pull to one side when the
brakes are applied.
• The brakes should work effectively.
• The brake pedal should not feel spongy.
• The brake pedal should not get too close to the floor when the brakes are applied.
Head restraints• Do the head restraints move smoothly and lock
securely?
Indicators/buzzers• Do the indicators and buzzers function properly?
Lights• Do all the lights come on?
• Are the headlights aimed correctly? ( P. 484)
Parking brake• Does the parking brake pedal move smoothly?
• When parked on a slope and the parking brake is on,
is the vehicle securely stopped?
Seat belts•Do the seat belt s operate smoothly?
• The seat belts should not be damaged.
Seats• Do the seat controls operate properly?
Steering wheel
• Does the steering wheel rotate smoothly?
• Does the steering wheel have the correct amount of free play?
• There should not be an y strange sounds coming
from the steering wheel.

452
GX460_OM_OM60K80U_(U)6-3. Do-it-yourself maintenance
■Removing the engine compartment cover
■Installing the clips
Push up center portion
Insert
Press
Engine compartment cover
1
2
3
NOTICE
■After installing an engine compartment cover
Make sure the cover is securely installed in its original position.

GX460_OM_OM60K80U_(U)
4896-3. Do-it-yourself maintenance
6
Maintenance and care
Replace the light bulb, and install
the bulb base.
Align the 3 tabs on the light bulb with
the mounting, and insert.
Turn and secure the bulb base.
Shake the bulb base gently to check
that it is not loose, turn the headlights
on once and visually confirm that no
light is leaking through the mounting.
When installing the cover, conduct in reverse.
4
5
61

GX460_OM_OM60K80U_(U)
4956-3. Do-it-yourself maintenance
6
Maintenance and care
■LED lights
The headlight low beams, parking lights/daytime running light s, front side marker lights,
fog lights, side turn signal lights, high moun ted stoplight, stop/tail lights and license plate
lights consist of a number of LEDs. If any of the LEDs burn out, take your vehicle to your
Lexus dealer to have the light replaced.
■Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight lens does not indicate a
malfunction. Contact your Lexus dealer for mo re information in the following situations:
●Large drops of water are built up on the inside of the lens.
●Wa t e r h a s b u i l t u p i nside the headlight.
CAUTION
■Replacing light bulbs
●Turn off the headlights. Do not attempt to replace the bulb immediately after turning
off the headlights.
The bulbs become very hot and may cause burns.
●Do not touch the glass portion of the light bulb with bare hands. When it is unavoid-
able to hold the glass portion, use and ho ld with a clean dry cloth to avoid getting
moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.
●Fully install light bulbs and any parts used to secure them. Failure to do so may result
in heat damage, fire, or water entering the headlight unit. This may damage the head-
lights or cause condensation to build up on the lens.
●Do not attempt to repair or disassemble light bulbs, connectors, electric circuits or
component parts.
Doing so may result in death or se rious injury due to electric shock.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installin g to prevent heat damage.

499
GX460_OM_OM60K80U_(U)
7
When trouble arises
7-1. Essential information
If your vehicle has to be stopped in an emergency
Steadily step on the brake pedal with both feet and firmly depress it.
Do not pump the brake pedal repeatedly as this will increase the effort required to
slow the vehicle.
Shift the shift lever to N.
If the shift lever is shifted to N
After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
If the shift lever cannot be shifted to N
Keep depressing the brake pedal with both feet to reduce vehicle speed as
much as possible.
To stop the engine, press and hold
the engine switch for 2 consecutive
seconds or more, or press it briefly 3
times or more in succession.
Stop the vehicle in a safe place by the road.
Only in an emergency, such as if it becomes impossible to stop the vehicle in
the normal way, stop the vehicle using the following procedure:
1
2
3
4
3
Press and hold for 2 seconds or more,
or press briefly 3 times or more
4
CAUTION
■If the engine has to be turned off while driving
Power assist for the brakes and steering wheel will be lost, making the brake pedal
harder to depress and the steering wheel heavier to turn. Decelerate as much as possi-
ble before turning off the engine.
5

500
GX460_OM_OM60K80U_(U)7-2. Steps to take in an emergency
If your vehicle needs to be towed
The following may indicate a problem with your transmission. Contact your
Lexus dealer before towing.
●The engine is running but the vehicle will not move.
●The vehicle makes an abnormal sound.
If a tow truck is not available in an emergency, your vehicle may be temporarily
towed using an elastic towing rope secured to the emergency towing hooks. This
should only be attempted on hard su rfaced 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 an d brakes must be in good condition.
To w i n g h o o k
If towing is necessary, we recommend having your vehicle towed by your
Lexus dealer or a commercial towing service, using a lift-type truck or a flat
bed truck.
Use a safety chain system for all towing, and abide by all state/provincial and
local laws.
Before towing
Emergency towing

5047-2. Steps to take in an emergency
GX460_OM_OM60K80U_(U)
NOTICE
■To prevent causing serious damage to the transmission and transfer when towing
using a wheel-lift type truck
Never tow this vehicle with any of th e wheels in contact with the ground.
■To avoid serious damage to your vehicle
■To prevent damage to the vehicle when towing using a wheel-lift type truck
When raising the vehicle, ensure adequate ground clearance for towing at the oppo-
site end of the raised vehicle. Without adequate clearance, the vehicle could be dam-
aged while being towed.
■To prevent damage to the vehicle during emergency towing
Observe the following precautions.
●Do not use cables or chains.
●Do not tow the vehicle at a speed higher than 19 mph (30 km/h) and more than a dis-
tance of 50 miles (80 km).
●Do not tow the vehicle from the rear.
●Do not secure elastic towing ropes to the suspension components.
If the vehicle is towed at a speed higher than 19 mph (30 km/h) or for more than
50 miles (80 km), or if the vehicle is towed from the rear, the transmission may be
damaged. In such cases, transport the vehicle using a flat bed truck with all four wheels
raised off the ground.
■To prevent body damage when to wing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■To prevent causing serious damage to the transmission and transfer in emergency
towing
Never tow a vehicle from the rear with four wheels on the ground. This may cause seri-
ous damage to the transmission and transfer.
Do not use the rear emergency towing hook.