ignition lexus LFA 2012 Technical Information / LEXUS 2012 LFA (OM77006U) Service Manual

283
4-3. Do-it-yourself maintenance
4
Maintenance and care
Air conditioning filter
The air conditioning filter must be changed regularly to maintain air condi-
tioning efficiency.
Set the air conditioning system to recirculated air mode.
(P. 190, 197)
The air conditioning filter case cannot be removed with the system in
the outside air mode.
Turn the ignition switch to the “LOCK” position.
Open the glove box. ( P. 210)
Remove the filter cover.
Remove the filter case.
Remove the air conditioning filter
from the filter case and replace it
with a new one.
The “UP” marks shown on the fil-
ter and the filter case should be
pointing up.
STEP1
STEP2
STEP3
STEP4
STEP5
STEP6

287
4-3. Do-it-yourself maintenance
4
Maintenance and care
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.
Turn the ignition switch to the “LOCK” position.
Open the fuse box lid.
Engine compartment Push the tabs in and lift the lid off.
Driver's side instrument panel Remove the lid.
Passenger's side instrument panel Remove the lid.STEP1
STEP2

306
5-1. Essential information
Using a flatbed truckUse a flatbed truck suitable for vehicles with low ground clearance. To
prevent body damage, do not tow with a wheel-lift or sling type truck. We
recommend having your Lexus dealer or a commercial towing service
load and unload the vehicle whenever possible.
■ Before loading the vehicle on a flatbed truck
Deactivate the tilt sensor. ( P. 56)
■ After the vehicle is loaded
Select Neutral, apply the parking brake and turn the ignition
switch to the “LOCK” position.
Use wheel chocks for all 4 wheels to prevent the vehicle from rolling.
Secure the vehicle by strapping
the tires to the deck of the tow
truck as shown.
STEP1
STEP2

5
When trouble arises
307
5-1. Essential information
■Emergency towing procedureStart the engine.
If the engine cannot be started, turn the ignition switch to the “ACC” or
“ON” position.
With Neutral selected, release the parking brake.
■When using the towing eyelet
Use the towing eyelet only when your vehicle is being towed.
Do not use the towing eyelet to tow another vehicle or to tie down your vehicle on a
flatbed truck.
CAUTION
■Caution while towing
●Use extreme caution when towing the vehicle.
Avoid sudden starts or erratic driving maneuvers which place excessive stress on
the emergency towing eyelet and the cable or chain. Always be cautious of the
surroundings and other vehicles while towing.
●If the engine is not running , the power assist for the brakes and steering may not
function, making steering and braking more difficult.
■Installing towing eyelet to the vehicle
Make sure that towing eyelet is installed securely.
If not securely installed, towing eyelet may come loose during towing. This may lead
to accidents that cause serious injury or even death.
NOTICE
■To prevent vehicle damage
Observe the following precautions when using a flatbed truck:
●Do not drive over wheel chocks, as doing so may damage the tires.
●Do not tie down the vehicle over any part s other than the tires (do not use parts
such as the suspension).
STEP1
STEP2

5
When trouble arises
309
5-1. Essential information
Fuel pump shut off system
To minimize the risk of fuel leakage when the engine stalls or when an airbag
inflates upon collision, the fuel pump shut off system stops the supply of fuel to
the engine.
Follow the procedure below to restart the engine after the system is acti-
vated.
Turn the ignition switch to the “ACC” or “LOCK” position.
Restart the engine.
NOTICE
■Before starting the engine
Inspect the ground under the vehicle.
If you find that fuel has leaked onto the ground, the fuel system has been damaged
and is in need of repair. Do not restart the engine.
STEP1
STEP2

318
5-2. Steps to take in an emergency
■If the tire pressure warning system is not functioning
The tire pressure warning system will be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
●If tires not equipped with tire pressure warning valves and transmitters are used
●If the ID code on the tire pressure warning valves and transmitters is not regis-
tered in the tire pressure warning computer
●If the tire inflation pressure is 73 psi (500 kPa, 5.1 kgf/cm2 or bar) or higher
The tire pressure warning system may be disabled in the following conditions:
(When the condition becomes normal, the system will work properly.)
●If electronic devices or facilities using similar radio wave frequencies are nearby
●If a radio set at similar frequencies is in use in the vehicle
●If there is a lot of snow or ice on the vehicle, particularly around the wheels or
wheel housings
●If non-genuine Lexus wheels are used (Even if you use Lexus wheels, the tire
pressure warning system may not work properly with some types of tires.)
●If a tire is repaired with the emergency tire puncture repair kit
■If the tire pressure warning light comes on after flashing frequently for 1 minute
If the tire pressure warning light comes on after flashing frequently for 1 minute
when the ignition switch is turned to th e “ON” position, have it checked by your
Lexus dealer.
■Customization that can be configured at Lexus dealer
The vehicle speed linked seat belt reminder buzzer can be disabled.
(Customizable features P. 383)

5
When trouble arises
337
5-2. Steps to take in an emergency
Attach the sticker as shown.
Remove the injection hose from
the valve and screw the valve core
into the valve securely by turning it
clockwise with the valve core tool.
Connect the air compressor hose
by threading it onto the valve.
Connect the compressor power
plug to the power outlet in the
glove box.
Turn the ignition switch to the “ACC” position.STEP9
STEP10
STEP 11
STEP 12
STEP 13

5
When trouble arises
345
5-2. Steps to take in an emergency
If the parking brake cannot be released
In the event that the battery is discharged or switch operation does not
release the parking brake, the parking brake can be released manually using
the procedure below. This procedure should be performed only if necessary,
such as in an emergency.
If the switch cannot be operated even when the battery is normal, the parking
brake system may be malfunctioning. Have the vehicle inspected by your
Lexus dealer immediately.
■ Before releasing the parking brake manually
●Select 1st gear or Reverse.
● Turn the ignition switch to the “LOCK” position.
● Check that the parking brake indicator is off.
● Chock the tires.
Releasing the parking brake manually
Open the rear hatch and remove
the cover.
If the rear hatch cannot be opened
with the rear hatch opener switch,
use the release cable. (P. 2 9 )
Release the belt and take out the
tool bag.
Take the parking brake release tool
and the screwdriver handle out of
the tool bag.
STEP1
STEP2

5
When trouble arises
347
5-2. Steps to take in an emergency
CAUTION
■When releasing the parking brake manually
●Select 1st gear or Reverse, turn the ignition switch to the “LOCK” position and
chock the tires.
Failure to do so may cause the vehicle to move, resulting in an accident.
●Turn the ignition switch to the “LOCK” position and check that the parking brake
indicator is off.
Failure to do so may cause the system to operate and turn the parking brake
release tool that is inserted, resulting in an injury.

5
When trouble arises
355
5-2. Steps to take in an emergency
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 procedure:
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 dis-
tance required to slow the vehicle.
Select Neutral. (  P. 103)
If Neutral is selected After slowing down, stop the vehicle in a safe place by the road.
Stop the engine.
If Neutral cannot be selected Keep depressing the brake pedal with both feet to reduce vehicle
speed as much as possible.
Stop the engine by turning the
ignition switch to the “ACC” posi-
tion.
Stop the vehicle in a safe place by the road.
STEP1
STEP2
STEP3
STEP4
STEP3
STEP4
■Stopping the engine in an emergency
The engine cannot be stopped by pressi ng the “ENGINE START” switch, as this
switch is not designed to stop the engine. If the vehicle has to be stopped in an
emergency, make sure to turn the ignition switch to the “ACC” position.
STEP5