Lexus NX300h (2021 year). Manual in english — page 22
370
6-3. Do-it-yourself maintenance
1
Take out the mechanical key.
2
Remove the cover.
To prevent damage to the key, cover the tip
of the flathead screwdriver with a tape.
3
Remove the depleted battery.
Insert a new battery with the “+” terminal
facing up.
Replacing the battery
WARNING
■
Removed battery and other parts
These parts are small and if swallowed by
a child, they can cause choking. Keep
away from children. Failure to do so
could result in death or serious injury.
NOTICE
■
For normal operation after replacing
the battery
Observe the following precautions to
prevent accidents:
●
Always work with dry hands.
Moisture may cause the battery to
rust.
●
Do not touch or move any other com-
ponent inside the remote control.
●
Do not bend either of the battery ter-
minals.
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6-3. Do-it-yourself maintenance
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1
Turn the power switch off.
2
Open the fuse box cover.
Engine compartment: type A fuse
box
Push the tab in and lift the lid off.
Engine compartment: type B fuse
box
Push the tab in and lift the lid off.
Left side instrument panel
Remove the lid.
Luggage compartment
3
Remove the fuse.
Only type A fuse can be removed using the
pullout tool.
4
Check if the fuse is blown.
Replace the blown fuse with a new fuse of
an appropriate amperage rating. The
amperage rating can be found on the fuse
box lid.
Checking and replacing
fuses
If any of the electrical components
do not operate, a fuse may have
blown. If this happens, check and
replace the fuses as necessary.
Checking and replacing fuses
372
6-3. Do-it-yourself maintenance
Type A
Normal fuse
Blown fuse
Type B
Normal fuse
Blown fuse
Type C
Normal fuse
Blown fuse
Type D
Normal fuse
Blown fuse
■
After a fuse is replaced
●
When installing the lid, make sure that the
tab is installed securely.
●
If the lights do not turn on even after the
fuse has been replaced, a bulb may need
replacement. (
●
If the replaced fuse blows again, have the
vehicle inspected by your Lexus dealer.
■
If there is an overload in a circuit
The fuses are designed to blow, protecting
the wiring harness from damage.
■
When replacing light bulbs
Lexus recommends that you use genuine
Lexus products designed for this vehicle.
Because certain bulbs are connected to cir-
cuits designed to prevent overload, non-
genuine parts or parts not designed for this
vehicle may be unusable.
A
B
A
B
A
B
WARNING
■
To prevent system breakdowns and
vehicle fire
Observe the following precautions.
Failure to do so may cause damage to
the vehicle, and possibly a fire or injury.
●
Never use a fuse of a higher amperage
rating than that indicated, or use any
other object in place of a fuse.
A
B
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6-3. Do-it-yourself maintenance
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Type A
Adjustment bolt A
Adjustment bolt B
Type B
Adjustment bolt A
Adjustment bolt B
Make sure the vehicle has a full tank
of gasoline and the area around the
headlight is not deformed.
Park the vehicle on level ground.
Make sure the tire inflation pressure
WARNING
●
Always use a genuine Lexus fuse or
equivalent.
Never replace a fuse with a wire, even
as a temporary fix.
●
Do not modify the fuses or fuse boxes.
■
Fuse box near the power control unit
Never check or replace the fuses as
there are high voltage parts and wiring
near the fuse box.
Doing so may cause electric shock,
resulting in death or serious injury.
NOTICE
■
Before replacing fuses
Have the cause of electrical overload
determined and repaired by your Lexus
dealer as soon as possible.
Headlight aim
Vertical movement adjusting
bolts
Before checking the headlight
aim
A
B
A
B
374
6-3. Do-it-yourself maintenance
is at the specified level.
Have someone sit in the driver’s
seat.
Bounce the vehicle several times.
1
Using a Phillips-head screwdriver,
turn bolt A in either direction.
Remember the turning direction
and the number of turns.
Type A
Type B
2
Turn bolt B the same number of
turns and in the same direction as
step
1
.
If the headlight cannot be adjusted using
this procedure, take the vehicle to your
Lexus dealer to adjust the headlight aim.
Type A
Type B
Adjusting the headlight aim
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6-3. Do-it-yourself maintenance
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Front side marker light (bulb type)
Front turn signal light (bulb type)
■
Bulbs that need to be replaced by
the Lexus dealer
Headlights
Front turn signal lights (LED type)
Parking lights and Daytime running
lights
Front fog lights
Front side marker lights (LED type)
Side turn signal lights
Stop/tail lights
Rear side marker lights
Back-up light
Rear turn signal light
High mounted stoplight
License plate lights
Outer foot lights
■
LED lights
The lights other than the front side marker
lights (bulb type) and front turn signal lights
(bulb type) each 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 indi-
cate a malfunction. Contact your Lexus
dealer for more information in the following
situations:
●
Large drops of water have built up on the
inside of the lens.
●
Water has built up inside the headlight.
■
When replacing light bulbs
Light bulbs
You may replace the following bulbs
by yourself.
The difficulty level of replacement
varies depending on the bulb. If
necessary bulb replacement seems
difficult to perform, contact your
Lexus dealer.
For more information about replac-
ing other light bulbs, contact your
Lexus dealer.
Removing the engine compart-
ment cover
Bulb locations
A
B
376
6-3. Do-it-yourself maintenance
Before replacing, check the wattage of
the light bulb to be replaced. (
■
Front side marker lights (bulb type)
1
Turn the bulb base counterclock-
wise.
2
Remove the light bulb.
3
When installing, reverse the steps
listed.
■
Front turn signal lights (bulb type)
1
Open the hood and remove the
cover for engine compartment
cover. (
2
Remove the cover.
Push the center of the clip
and remove
the clip and cover
.
3
Turn the bulb base counterclock-
wise.
4
Remove the light bulb.
5
Replace the light bulb.
Replacing light bulbs
A
B
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6-3. Do-it-yourself maintenance
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6
Turn clockwise and set the bulb
base.
7
Attach the clip to the cover.
Push up on the center of the clip and attach
the clip
.
8
Attach the cover.
Align the 2 tabs positions and close the
cover
and fix the cover by pushing the
center of the clip
.
9
Install the engine compartment
cover. (
A
A
B
WARNING
■
Replacing light bulbs
●
Be sure to stop the hybrid system and
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
unavoidable 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
water entering the headlight unit. This
may damage the headlights or cause
condensation to build up on the lens.
●
Do not attempt to repair or disassem-
ble light bulbs, connectors, electric cir-
cuits or component parts.
Doing so may result in death or serious
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
installing to prevent heat damage.
379
7
7
When trouble
ari
ses
When trouble arises
7-1. Essential information
Emergency flashers. . . . ..
If your vehicle has to be stopped in
an emergency. . . . . . ..
If the vehicle is trapped in rising
water. . . . . . . . . . . .
7-2. Steps to take in an emergency
If your vehicle needs to be towed
. . . . . . . . . . . . . .
If you think something is wrong
. . . . . . . . . . . . . .
If a warning light turns on or a
warning buzzer sounds . ...
If a warning message is displayed
. . . . . . . . . . . . . .
If you have a flat tire. . . . ..
If the hybrid system will not start
. . . . . . . . . . . . . .
If you lose your keys. . . . ...
If the fuel filler door cannot be
opened. . . . . . . . . . ..
If the electronic key does not
operate properly . . . . . .
If the 12-volt battery is discharged
. . . . . . . . . . . . . . .
If your vehicle overheats . . .
If the vehicle becomes stuck .
380
7-1. Essential information
7-1.Essential information
Press the switch.
All the turn signal lights will flash. To turn
them off, press the switch once again.
■
Emergency flashers
If the emergency flashers are used for a
long time while the hybrid system is not
operating (while the “READY” indicator is
not illuminated), the 12-volt battery may dis-
charge.
1
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.
2
Shift the shift lever to N.
If the shift lever is shifted to N
3
After slowing down, stop the vehi-
cle in a safe place by the road.
4
Stop the hybrid system.
If the shift lever cannot be shifted to
N
3
Keep depressing the brake pedal
with both feet to reduce vehicle
speed as much as possible.
4
To stop the hybrid system, press
and hold the power switch for 2
consecutive seconds or more, or
Emergency flashers
The emergency flashers are used to
warn other drivers when the vehicle
has to be stopped in the road due to
a breakdown, etc.
Operating instructions
If your vehicle has to be
stopped in an emergency
Only in an emergency, such as if it
becomes impossible to stop the
vehicle in the normal way, stop the
vehicle using the following proce-
dure:
Stopping the vehicle
381
7-1. Essential information
7
When trouble
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press it briefly 3 times or more in
succession.
5
Stop the vehicle in a safe place by
the road.
Remove the seat belt first.
If the door can be opened, open the
door and exit the vehicle.
If the door can not be opened, open
the window using the power window
switch and exit the vehicle through
the window.
If the window can not be opened
using the power window switch,
remain calm, wait until the water
level inside the vehicle rises to the
point that the water pressure inside
of the vehicle equals the water pres-
sure outside of the vehicle, and then
open the door and exit the vehicle.
WARNING
■
If the hybrid system has to be turned
off while driving
Power assist for the steering wheel will
be lost, making the steering wheel
heavier to turn. Decelerate as much as
possible before turning off the hybrid sys-
tem.
If the vehicle is trapped in
rising water
In the event the vehicle is sub-
merged in water, remain calm and
perform the following.
WARNING
■
Using an emergency hammer
*
for
emergency escape
The front side windows and rear side
windows, as well as the rear window can
be shattered with an emergency ham-
mer
*
used for emergency escape. How-
ever, an emergency hammer can not
shatter the windshield as it is laminated
glass.
*
: Contact your Lexus dealer or after-
market accessory manufacturer for
further information about an emer-
gency hammer.
382
7-1. Essential information
WARNING
■
Escaping the vehicle from the window
There are cases where escaping the
vehicle from the window is not possible
due to seating position, passenger body
type, etc.
When using an emergency hammer,
consider your seat location and the size
of the window opening to ensure that the
opening is accessible and large enough
to escape.
383
7-2. Steps to take in an emergency
7
When trouble
ari
ses
7-2.Steps to take in an emergency
If your vehicle needs to be
towed
If towing is necessary, we recom-
mend having your vehicle towed by
your Lexus dealer or commercial
towing service, using a wheel-lift
type truck or flatbed truck.
Use a safety chain system for all
towing, and abide by all state/pro-
vincial and local laws.
If towing your vehicle with a wheel-
lift type truck, use a towing dolly.
(
WARNING
Observe the following precautions.
Failure to do so may result in death or
serious injury.
■
When towing the vehicle
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 or related
parts may be damaged, the vehicle may
fly off the truck, or electricity generated
by the operation of the motor may cause
a fire to occur depending on the nature
of the damage or malfunction.
■
While towing
●
When towing using cables or chains,
avoid sudden starts, etc., which place
excessive stress on the towing eyelets,
cables or chains. The towing eyelets,
cables or chains may become dam-
aged, broken debris may 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 oper-
ated.
■
Installing towing eyelets to the vehi-
cle
Make sure that towing eyelets are
installed securely.
If not securely installed, towing eyelets
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 ade-
quate ground clearance for towing at
the opposite end of the raised vehicle.
Without adequate clearance, the vehi-
cle could be damaged 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.
384
7-2. Steps to take in an emergency
The following may indicate a problem
with your hybrid transmission. Contact
your Lexus dealer or commercial tow-
ing service before towing. (
The hybrid system warning message
is shown on the multi-information
display and the vehicle does not
move.
The vehicle makes an abnormal
sound.
From the front
Use a towing dolly under the rear
wheels.
From the rear
Use a towing dolly under the front
wheels.
When using a flat-bed truck to trans-
port the vehicle, use tire strapping
belts. Refer to the owner’s manual of
the flat-bed truck for the tire strapping
method.
NOTICE
■
Recreational towing (behind motor
home, etc.)
Never dinghy tow your vehicle to pre-
vent causing serious damage to the
Hybrid AWD system and transmission.
(
Situations when it is necessary to
contact dealers before towing
Towing with a wheel-lift type
truck
NOTICE
■
Towing with a sling-type truck
Do not tow with a sling-type truck to pre-
vent body damage.
Using a flatbed truck
385
7-2. Steps to take in an emergency
7
When trouble
ari
ses
In order to suppress vehicle movement
during transportation, set the parking
brake and turn the power switch off.
If a tow truck is not available in an
emergency, your vehicle may be tem-
porarily towed using cables or chains
secured to the emergency towing eye-
lets. This should only be attempted on
hard surfaced roads for short distance
at under 18 mph (30 km/h).
A driver must be in the vehicle to steer
and operate the brakes. The vehicle’s
wheels, drivetrain, axles, steering and
brakes must be in good condition.
To have your vehicle towed by another
vehicle, the towing eyelet must be
installed to your vehicle. Install the tow-
ing eyelet by following the specified
procedure.
1
Take out the wheel nut wrench, flat-
head screwdriver and towing eye-
let. (
2
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.
Type A
Type B
3
Insert the towing eyelet into the
hole and tighten partially by hand.
Emergency towing
To have your vehicle towed
386
7-2. Steps to take in an emergency
4
Tighten down the towing eyelet
securely using a wheel nut wrench
or hard metal bar.
5
Securely attach cables or chains to
the towing eyelet.
Take care not to damage the vehicle body.
6
Enter the vehicle being towed and
start the hybrid system.
If the hybrid system does not start, turn the
power switch to ON mode.
7
Shift the shift lever to N and release
the parking brake.
Turn automatic mode off. (
When the shift lever cannot be shifted:
■
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 luggage
compartment. (
Fluid leaks under the vehicle
(Water dripping from the air condi-
tioning after use is normal.)
Flat-looking tires or uneven tire
wear
Engine coolant temperature gauge
needle continually points higher
than normal
Changes in exhaust sound
Excessive tire squeal when corner-
ing
Strange noises related to the sus-
pension system
Pinging or other noises related to
the hybrid system
Engine misfire or misses, stumbling
or running roughly
Appreciable loss of power
Vehicle pulls heavily to one side
when braking
If you think something is
wrong
If you notice any of the following
symptoms, your vehicle probably
needs adjustment or repair. Con-
tact your Lexus dealer as soon as
possible.
Visible symptoms
Audible symptoms
Operational symptoms
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