ECU LEXUS GS300H 2019 Repair Manual

405 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30F92E_(EE)
■Removing the engine compartment cover
Right-hand side
Center
■Installing the clips
Push up center portion
Insert
Press
Engine compartment cover
1
2
3
NOTICE
■Checking the engine compartment cover after installation
Make sure that the cover is securely installed in its original position.

4446-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
When installing, reverse the steps listed.
After installing the bulb base, secure the cord with the clips and if replacing the left
side bulb, make sure to install the bolt fo r the washer fluid filler opening in its origi- nal position.
4
Right sideLeft side

4466-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
Turn the bulb base counterclock-
wise.
Remove the light bulb.
After installing the new bulb,
secure the socket to the light
body.
When insertin g the socket, align the marks printed on the light body and
the socket.
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6
7

447 6-3. Do-it-yourself maintenance
6
Maintenance and care
GS450h_300h_OM_OM30F92E_(EE)
Install the visor cover on the mir-
ror frame, secure it with a screw,
and install the side turn signal light
and outer foot light.
Use only the screw position shown in the illustration.
Side turn signal light: Align the tabs
on the light and the cover and install.
Outer foot light: Interlock the tabs in the groove of the light body with
those on the cover, and secure.
Disconnect the tabs, and sepa-
rate the top and bottom of the
rear side cover of the mirror.
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9

4486-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
Install the cover of the back end
of the mirror, installing the lower
side and the upper side in that
order.
When installing the lower side of the cover, insert the side turn signal lightpin into the hole in the cover.
Secure the cover with screws and
reconnect the connectors back
together.
Secure the cords by returning them to the hooks as they were.
Align the tabs, and secure the
mirror by pushing in each diago-
nally-opposite pair of tabs in
order.
Make sure to insert the tabs in order as shown in the illustration, and push
them in until a click is heard.
If you do not hear the click, do not force the tabs in. Instead, remove the
mirror and check that the tabs are aligned.
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11
12

4506-3. Do-it-yourself maintenance
GS450h_300h_OM_OM30F92E_(EE)
WARNING
■Replacing light bulbs
●Turn 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.
●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 hold 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 wate r entering the headlight unit. This may damage the head- lights or cause condensation to build up on the lens.
■To prevent damage or fire
●Make sure bulbs are fully seated and locked.
●Check the wattage of the bulb before installing to prevent heat damage.
NOTICE
■When replacing the outer foot lights
If the front window is stopping you from conducting the replace operation properly, open the window on the side you are working on to allow you enough space to work.
Continuing the operation without giving yourself enough space to work could lead you to scratch the vehicle.

4567-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
If a tow truck is not available in an emergency, your vehicle may be temporarily
towed using cables or chains secured to the emergency towing eyelets. This
should only be attempted on hard surfaced roads for short distances at under
30 km/h (18 mph).
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.
Take out the towing eyelet. ( P. 499, 511)
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.
Emergency towing
Emergency towing procedure
1
2
Except F SPORT modelsF SPORT models
3

4577-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Tighten down the towing eyelet
securely using a wheel nut wrench
or hard metal bar.
Securely attach cables or chains to the towing eyelet.
Take care not to damage the vehicle body.
Enter the vehicle being towed and start the hybrid system.
If the hybrid system does not start, turn the power switch to ON mode.
Shift the shift lever to N and release the parking brake.
When the shift lever cannot be shifted: P. 229
■While towing
If the hybrid system is off, the power assist for the brakes and steering will not function, making steering and braking more difficult.
■Wheel nut wrench
Wheel nut wrench is installed in trunk. ( P. 499, 511)
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5
6
7

4587-2. Steps to take in an emergency
GS450h_300h_OM_OM30F92E_(EE)
WARNING
Observe the following precautions. Failure to do so may result in death or serious injury.
■When towing the vehicle
■While towing
●When towing using cables or chains, avoid sudden starts, etc. which place excessivestress on the towing eyelets, cables or chains. The towing eyelets, cables or chains
may become damaged, broken debris ma y hit people, and cause serious damage.
●Do not turn the power switch off. There is a possibility that the steering wheel is locked and cannot be operated.
■Installing towing eyelets to the vehicle
Make sure that towing eyelets are installed securely.
If not securely installed, towing ey elets may come loose during towing.
NOTICE
■To prevent damage to the vehicle when towing using a wheel-lift type truck
●Do not tow the vehicle from the rear when the power switch is off. The steering lock mechanism is not strong enough to hold the front wheels straight.
●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 when towing with a sling-type truck
Do not tow with a sling-type truck, either from the front or rear.
■To prevent damage to the vehicle during emergency towing
Do not secure cables or chains to the suspension components.
Be sure to transport the vehicle with all four wheels raised off the ground. If the vehicle is
towed with the tires contacting the ground, the drivetrain and related parts may be damaged,an accident may occur due to a change in
direction of the vehicle or electricity generated by the operation of the motor may cause a fireto occur depending on the nature of the dam-
age or malfunction.

4957-2. Steps to take in an emergency
7
When trouble arises
GS450h_300h_OM_OM30F92E_(EE)
Con-
tinuous
(Vehicles with the entry function)
An attempt was made to lock the doors using the smart entry & start
system while the electronic key was still inside the vehicle. Retrieve the electronic key
from the vehicle and lock the doors again.
OnceCon-tinuous
An attempt was made to lock eitherfront door by opening a door and
putting the inside lock button into the lock position, then closing thedoor by pulling on the outside door
handle with the electronic key still inside the vehicle.For some models only: An attempt
was made to lock the doors other than using the smart entry & startsystem while the electronic key was
still inside the vehicle.  Retrieve the electronic key from the vehicle and lock the
doors again.
Once
• When the doors were unlocked with the mechanical key and thenthe power switch was pressed, the
electronic key could not be detected in the vehicle.• The electronic key could not be
detected in the vehicle even after the power switch was pressed twoconsecutive times.
 Touch the electronic key to the power switch while depressingthe brake pedal.
Once
An attempt was made to start thehybrid system with the shift lever inan incorrect position.
 Shift the shift lever to P and start the hybrid system.
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