ECU LEXUS RX350 2015 Repair Manual

6904-3. Do-it-yourself maintenance
■
Certification for tire pressure warning system
TPMS Transmitter FCC ID: PAXPMV107J
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 a ccept any interference, including interfer-
ence that may cause undesired operation of the device.
L’utilisation de ce dispositif est autori sée seulement aux deux conditions suivantes:
(1) il ne doit pas produire de brouillage, et (2) l’utilisateur du dispositif doit être prêt
à accepter tout brouillage radioélectrique reçu, même si ce brouillage est
susceptible de compromettre le fonctionnement du dispositif.
TPMS Receiver FCC ID: HYQ13BCX
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.

7074-3. Do-it-yourself maintenance
4
Maintenance and care 13
EPS 60 A Electric power steering system
14
ALT 140 A IG1 MAIN, TOWING BATT,
DEICER, TOWING, STOP, RDI FAN
NO. 1, FILTER, RR DEF, AIR SUS,
HEATER, ABS NO. 2, H-LP CLN,
PBD, ECU-IG1 NO. 1, ECU-IG1 NO.
3, GAUGE NO. 1, ECU-IG1 NO. 2,
EPS, FR WIP, RR WIP, FR WASH, RR
WASH, RH S-HTR, LH S-HTR, TAIL,
PANEL, D/L ALT B, FR FOG, FR
DOOR, FL DOOR, RR DOOR, RL
DOOR, PSB, P-SEAT LH, P-SEAT
RH, TI&TE, FUEL OPN, DR LOCK,
O B D, R R F O G, S / R O O F, 4 W D,
INVERTER, ECU-ACC, P/POINT,
CIG, RADIO NO. 215
AMP1 30 A Audio system16
EFI MAIN 30 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, electronic controlled transmis-
sion, EFI NO. 1, EFI NO. 2, F/PMP17
AMP2 30 A Audio system18
IG2 MAIN 30 A IGN, GAUGE NO. 2, ECU IG 219
IP J/B 25 A Power door lock system20
STR LOCK 20 A Starter system
21
RAD NO. 3 15 A Meters and gauges, navigation sys-
tem, audio system
22
HAZ 15 A Emergency flashersFuse Ampere Circuit

7084-3. Do-it-yourself maintenance
23
ETCS 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem24
RAD NO. 1 10 A Audio system, navigation system25
AM2 7. 5 A Starter system26
ECU-B NO. 2 7. 5 A Air conditioning system, front passen-
ger occupant classification system,
audio system, vehicle stability control
system, power windows27
MAYDAY/TEL 7. 5 A MAYDAY/TEL28
IMMOBI 7. 5 A IMMOBI29
ALT-S 7. 5 A Charging system30
DRL 7. 5 A Daytime running light system31
IGN 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem32
DOME 10 A Vanity mirror lights, luggage compart-
ment lights, interior lights, personal
lights, door courtesy lights, footwell
lights, scuff lights
33
ECU-B NO. 1 10 A Tilt and telescopic steering, multiplex
communication system, meters and
gauges, driving position memory,
power seats, power back door, head-
up display, starter system, outside rear
view mirror, steering sensor, garage
door openerFuse Ampere Circuit

7094-3. Do-it-yourself maintenance
4
Maintenance and care 34
EFI NO. 1 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, electronic controlled transmis-
sion35
WIP-S 7. 5 A Cruise control36
ECU-IG1 NO. 4 10 A Air conditioning system, rear window
defogger, vehicle stability control sys-
tem, electric cooling fans37
BK/UP LP 7. 5 A Back-up lights38
ECU-IG1 NO. 5 15 A Air conditioning system39
ECU-IG1 NO. 6 10 A Head light cleaner, cruise control,
vehicle stability control, air condition-
ing system, Blind Spot Monitor40
EFI NO. 2 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem41
F/ P M P 15 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem42
DEICER 25 A Windshield wipers and washer
43
STOP 7. 5 A Vehicle stability control, vehicle
dynamics integrated management,
stop lights, electronic controlled
transmission, multiport fuel injection
system/sequential multiport fuel injec-
tion system, shift lock control system,
starter system
44
TOW I N G BAT T 20 A Trailer battery
45
TOW I N G 30 A Trailer lightsFuse Ampere Circuit

7104-3. Do-it-yourself maintenance
46
FILTER 10 A47
IG1 MAIN 30 A ECU-IG1 NO. 6, BK/UP LP, ECU-
IG1 NO. 5, ECU-IG1 NO. 448
H-LP RH HI 15 A Right-hand headlight (high beam)49
H-LP LH HI 15 A Left-hand headlight (high beam)50
BIXENON 10 A51
H-LP RH LO 15 A Right-hand headlight (low beam)52
H-LP LH LO 15 A Left-hand headlight (low beam)53
HORN 10 A Horn54
A/F 20 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem55
S-HORN 7. 5 A S-HORNFuse Ampere Circuit

7114-3. Do-it-yourself maintenance
4
Maintenance and care ■ Driver’s side instrument panel
Fuse Ampere Circuit1
P/ P O I N T 15 A Po w e r o u t l e t2
ECU-ACC 10 A Navigation system, air conditioning
system, audio system, multiplex com-
munication system, multi-information
display, head-up display3
CIG 15 A Po w e r o u t l e t4
RADIO NO. 2 7. 5 A Audio system, navigation system5
GAUGE NO. 1 10 A Emergency flashers, navigation sys-
tem, head-up display, air conditioning
system, charging system
6
ECU-IG1 NO. 3 10 A Outside rear view mirror, windshield
wipers and washer, seat heaters,
starter system, power outlet, moon
roof, air conditioning system

7124-3. Do-it-yourself maintenance
7
ECU-IG1 NO. 1 10 A Multiplex communication system,
steering sensor, shift lock control sys-
tem, tilt and telescopic steering, auto-
matic transmission system, power
back door, pre-collision system, vehi-
cle stability control system, tire pres-
sure warning system8
S/ROOF 30 A Moon roof9
FUEL OPN 7. 5 A Fuel filler door opener10
PSB 30 A Pre-collision seat belt11
TI & TE 30 A Tilt and telescopic steering system12
DR LOCK 10 A13
FR FOG 7. 5 A Front fog lights14
P-S E AT L H 30 A Po w e r s e a t ( l e f t - s i d e )15
4WD 7. 5 A AW D s y s t e m16
INVERTER 20 A Po w e r o u t l e t17
RR FOG 7. 5 A18
D/L ALT B 25 A Multiplex communication system,
power door lock system, power back
door19
EPS 10 A Electric power steering system20
ECU-IG1 NO. 2 10 A Intuitive parking assist, AWD system,
pre-collision seat beltFuse Ampere Circuit

7134-3. Do-it-yourself maintenance
4
Maintenance and care 21
PA N E L 10 A Switch illumination, navigation system,
automatic transmission system, audio
system, multi-information display, air
conditioning system, multiplex com-
munication system22
TA I L 10 A Parking lights, front side marker lights,
tail lights, license plate lights, front fog
lights, towing converter23
AIR SUS 20 A24
P-S E AT R H 30 A Power seat (right-side)25
OBD 7. 5 A On-Board diagnosis26
FR DOOR 25 A Front power window (right-side), out-
side rear view mirror27
RR DOOR 25 A Rear power window (right-side)28
FL DOOR 25 A Front power window (left-side), out-
side rear view mirror29
RL DOOR 25 A Rear power window (left-side)30
FR WASH 25 A Windshield wipers and washer31
RR WIP 15 A Windshield wipers and washer32
RR WASH 20 A Windshield wipers and washer33
FR WIP 30 A Windshield wipers and washer
34
ECU IG2 10 A Multiport fuel injection system/
sequential multiport fuel injection sys-
tem, front passenger occupant classi-
fication system, SRS airbag system,
stop lights, electronic controlled
transmission, steering lock systemFuse Ampere Circuit

7234-3. Do-it-yourself maintenance
4
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.
Connect the connector. Shake the bulb base gently to
check that it is not loose, turn the
headlight high beams on once and
visually confirm that no light is leak-
ing through the mounting.
When replacing the right side bulb, install by conducting
with the directions reversed.STEP 4
STEP 5
STEP 5STEP 6
STEP 5STEP 1

7244-3. Do-it-yourself maintenance
■ Halogen headlight low beams (if equipped)
Turn the bulb base counterclock-
wise.
Unplug the connector while
depressing the lock release.
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
headlight low beams on once and
visually confirm that no light is leak-
ing through the mounting.STEP 1
STEP 2
STEP 3
STEP 4