2012 Lexus LFA light

274
4-3. Do-it-yourself maintenance
■If you press the tire pressure warning reset switch accidentally
If initialization is performed, adjust the tire inflation pressure to the specified level
and initialize the tire pressure warning system again.
■When the initialization of the tire pressure warning system has failed
Initialization can be completed in a few minutes. However, in the following cases,
the settings have not been recorded and the system will not operate properly. If
repeated attempts to record tire inflation pressure settings are unsuccessful, have
the vehicle inspected by your Lexus dealer.
●When operating the tire pressure warning reset switch, the tire pressure warning
light does not flash 3 times.
●After carrying out the initialization procedure, the tire pressure warning light
flashes for 1 minute then stays on after driving for 20 minutes.
■Tire pressure warning system certification
MODEL/FCC IDs:
Tr a n s m i t t e r : PA X P M V 1 0 7 J
Receiver: HYQ13BDK
For vehicles sold in the U.S.A.
NOTE:
This device complies with part 15 of the FCC Rules. Operation is subject to the fol-
lowing two conditions: (1) This device may not cause harmful interference, and (2)
this device must accept any interference received, including interference that may
cause undesired operation.
FCC WARNING:
Changes or modifications not expressly approved by the party responsible for
compliance could void the user's authority to operate the equipment.
For vehicles sold in Canada
NOTE:
Operation is subject to the following two conditions: (1) this device may not cause
interference, and (2) this device must accept any interference, including interfer-
ence that may cause undesired operation of the device.

275
4-3. Do-it-yourself maintenance
4
Maintenance and care
CAUTION
■When inspecting or replacing tires
Observe the following precautions to prevent accidents.
Failure to do so may cause damage to parts of the drive train, as well as dangerous
handling characteristics, which may lead to an accident resulting in death or serious
injury.
●Do not mix tires of different makes, models or tread patterns.
Also, do not mix tires of remarkably different treadwear.
●Do not use tire sizes other th an those recommended by Lexus.
●Do not mix summer, all season and snow tires.
●Do not use tires that have been used on another vehicle.
Do not use tires if you do not know how they were used previously.
■To avoid burns
Do not touch the wheels or the area around the brakes immediately after the vehi-
cle has been driven, as they will be extremely hot.
■When initializing the tire pressure warning system
Do not operate the tire pressure warning re set switch without first adjusting the tire
inflation pressure to the specified level. Otherwise, the tire pressure warning light
may not come on even if the tire inflation pressure is low, or it may come on when
the tire inflation pressure is actually normal.

291
4-3. Do-it-yourself maintenance
4
Maintenance and care
8CDS FAN 40 A Electric cooling fan
9WIP40 A Windshield wiper
10ABS MTR1 50 A Electronically controlled brake system
11ACC CUT 7.5 A Starter system
12H-LP RH 15 A Headlight low/high beam (right-side)
13H-LP LH 15 A Headlight low/high beam (left-side)
14E/G IG 5 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, ASG (Automated Sequential
Gearbox)
15IGN
10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, SRS airbag system, electronically
controlled brake system, electric
power control system
16EFI NO.2 10 A
Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
17EFI NO.1
10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem
18P/I
50 A INJ, A/PMP HTR, EFI, A/F HTR
19ST 30 A Starter system
20MAIN 30 A H-LP RH, H-LP LH
21ABS MTR2 50 A Electronically controlled brake system
22F/ P M P3 0 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem
FuseAmpereCircuit

292
4-3. Do-it-yourself maintenance
23IG220 A IGN, E/G IG, ECU-IG2, GAUGE
24D/C C UT 20 A MPX-B, DOME, P-MPX-B
(for suppressing parasitic current)
25HORN
15 A Horn
26ETCS-RH 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem
27ETCS-LH 10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem
28BI XENON 10 A Headlight low/high beams
FuseAmpereCircuit

293
4-3. Do-it-yourself maintenance
4
Maintenance and care
■Driver’s side instrument panel
FuseAmpereCircuit
1D-P/W 20 A Power window (driver's side)
2D-PWR SEAT 30 A Power seat (driver's side)
3DRLCK ALT 25 A Main body ECU
4RLY SIG 5 A PANEL
5OBD10 A On-board diagnosis
6AM1 5 AD-ACC, P-ACC, CDS FAN, WIP,
WASH, MIR HTR, D-S/HTR, P-S/
HTR, D-IG1-1, D-IG1-2, D-IG1-3, D-
IG1-4, P-IG1-1, P-IG1-2, P-IG1-3, P-
IG1-4, RR-IG1
7D-S/HTR 15 A Seat heater (driver's side)
8D-ACC
5 A Main body ECU
9R/MIR10 A Outside rear view mirrors
10D-IG1-1 5 A CAN gateway ECU
11D-IG1-4 5 A Seat heater (driver's side)
12D-IG1-25 AMain body ECU, rear hatch, EPS
(Electric Power Steering), tire pres-
sure warning system, charging system,
turn signal lights, emergency flashers

294
4-3. Do-it-yourself maintenance
13D-IG1-35 AElectronically controlled brake sys-
tem, VDIM (Vehicle Dynamics Inte-
grated Management)
14ABS MAIN D2 10 A Electronically controlled brake system
15ABS MAIN D1 10 A Electronically controlled brake system
16STOP
10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, electronically controlled brake
system, ASG (Automated Sequential
Gearbox), stop/tail lights, high
mounted stoplight
17DRLCK BAT 25 A Main body ECU
18HAZ
10 ATurn signal lights, emergency flashers,
gauges and meters
19AM2
5 AIGN, E/G IG, EFI NO.1, EFI NO.2,
ECU-IG2, GAUGE, ASG-IG2
20PANEL
5 A Interior lights
21DOME 5 A Interior lights
22MPX-B10 AMultiport fuel injection system/
sequential multiport fuel injection sys-
tem, main body ECU, rear hatch,
power seat (driver's side), gauges and
meters, VDIM (Vehicle Dynamics
Integrated Management)
FuseAmpereCircuit

297
4-3. Do-it-yourself maintenance
4
Maintenance and care
■ Luggage compartment
FuseAmpereCircuit
1VSSR 5 A Electric power control system
2RR-IG110 AActive rear wing, electric cooling fans,
electronic parking brake, electroni-
cally controlled brake system, seat
belts, navigation system, rear window
defogger, back-up lights
3WASH
20 A Windshield washer
4F/OPN 10 A Fuel filler door opener
5TA I L 1 0 AParking lights, front side marker lights,
rear side marker lights, license plate
lights, stop/tail lights
6RR FOG 7.5 A

7AMP RH 30 A Audio system
8AMP LH 30 A Audio system
9OIL PMP 25 AASG (Automated Sequential Gear-
box)
10RR ECU-B 7.5 AActive rear wing, electronic parking
brake
11ASG-IG2 7.5 AASG (Automated Sequential Gear-
box)

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4-3. Do-it-yourself maintenance
12ASG-B7.5 AASG (Automated Sequential Gear-
box)
13BK/UP BAT 10 A Electronically controlled brake system
14ASG-SOL 10 A ASG (Automated Sequential Gear-
box)
■After a fuse is replaced
●If the lights do not turn on even afte
r the fuse has been replaced, a bulb may
need replacement. Take your vehicle to your Lexus dealer for inspection.
●If the replaced fuse blows again, have the vehicle inspected by your Lexus
dealer.
■If there is an overload in the circuits
The fuses are designed to blow, protecting the wiring harness from damage.
CAUTION
■To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failing to do so may cause damage, and possibly a fire or injury.
●Never use a fuse of a higher amperage rating than indicated, or use any other
object in place of a fuse.
●Always use a genuine Lexus fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.
This can cause extensive damage or even fire.
●Do not modify the fuses or the fuse box.
NOTICE
■Before replacing fuses
Have the cause of electrical overload determined and repaired by your Lexus
dealer as soon as possible.
FuseAmpereCircuit