2008 Lexus ES350 OEM Service & Repair Manual
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412
LEXUS ES 350 (EM01Y0U)
I GROUND POINT
RR DEF Relay
(SOL–)
B1
(GND)
B26
(GND)
B27
(GND)
B28
(GND)
B29
(GND)
B30
(GND)
B31
(E)
A14
(E)
A16
(E01)
(E1)
B40
(E1)
A7
(E)
A33
(E)
A41
(E)
ST Relay
(–S)
B3
1
1
A1
BA3 12
4
BA3
B32
W–B GR
B
B
W
W
W–B
W–B
B–W
BR
W–B
W–B
W–B
BR
W–B
BR
W–B
W–B
W
W–B
W–B
W–B
2
1
3
B
(E1)
B12
W–B
(E05)
W
(E02)
B–W
5
6
4
W–B
B
W–B
Headlamp (LH Low)
Turn Signal Lamp
(Front LH)
Parking Lamp (LH)
Cooling Fan ECU
Headlamp (LH High)
Ignition Coil (No. 1)
Ignition Coil (No. 2)
Ignition Coil (No. 4)
Ignition Coil (No. 5)
A/C Compressor
Ignition Coil (No. 3)
Ignition Coil (No. 6)
Engine Control
Module
Transmission
Control ECU
Junction Connector
(E)
A15
Headlamp Assembly
(LH)
W–B
BA4 6
(E)
B14
W–B
W–B
B
(–S)
W–B
FAN MAIN Relay
1
Engine Oil Level Sensor
LEXUS ES 350 (EM01Y0U)
413
I
E21
(SG)
E30
(ECC)
(E)
A50
A
17
B
16
3L
12
4L
10
A5
A27(A), A28(B)
W–B
W–B
GR
W–B
(E)
(E)
B
W–B
A51
A6
W–B
EA1
15
3U
11
10
4D
10
4I
E84
(E)
W–B
3D
9
(–S)
IG2 Relay
(–ST)
ST CUT Relay
(E)
A11
(E)
A12
1
1
A2
W–B
W–B
W–B BR
BR
W–B
W
L
BR
1
3
5
6
Fog Lamp (Front LH)
Brake Fluid
Level Warning SW
Junction Connector
Wireless Door
Lock Buzzer
Engine Hood
Courtesy SW
Windshield
Wiper Motor
Data Link
Connector 3
Spiral Cable
Transmission
Control SW
Junction
Connector
A29
B
B
17
18
B A
16
(SGND)
Millimeter Wave
Radar Sensor
A31
GR
BR
(GND)
A8
Distance
Control ECU
(SGND)
GR
W–B
A/F Relay
EFI Relay
Light Control
Circuit
1E
10
1E
11
BR
(E)
Turn Signal Lamp
(Front Side LH)
A43
4 GR
(E)
A37
L
Smog Ventilation
Sensor
L
BR
W–B
414
LEXUS ES 350 (EM01Y0U)
I GROUND POINT
(E1)
A22
(GND2)
A36
(E04)
(ME01)
A36
(GND1)
A34
(E)
A18
(E)
A4
A6 A3
(GND)
E12 E6
(E2)
B1
E3 E1
W–B
W–B
W–B
W–B
W–B
W–B
BR
BR
W–B
W–B
W–B
B
W
5
DE
3
DM
BA3
10 16
LA1
W–B W–B W–B
L2
(E)
A13
(E)
(E)
A19
A42
W–B
(GND)
W–B
E79
W–B
W–B
W–B
(MGND)
W
W–B
W–B
DG
10
(GND3)
E59
(GND)
E68
(COM)
12
3A
2
3R
3
3R
2
3E
W–B
W–B
Skid Control ECU
with Actuator
Skid Control ECU
with Actuator
Parking Lamp (RH)
Fog Lamp
(Front RH)
Headlamp
Assembly (RH)
Turn Signal Lamp
(Front RH)
Headlamp (RH Low)
Headlamp
Swivel ECU
Airbag Sensor
Assembly Center
Blower Motor
Power SW
Main Body ECU
Canister Pump
Module
(E01)
B12
Engine Control
Module
(E03)
B
W–B
(E)
A44
Turn Signal Lamp
(Front Side RH)
(E)
Washer Level
Warning SW
A48
W
B
2
3
5
4
Junction Connector
A30
A17
(E)
Headlamp (RH High)
W–B
E19
(ES)
Combination
Meter
2
3S
W–B
E78
(SGND)
Steering
Lock ECU
W–B
1
3R
∗ 1 : w/ LEXUS Navigation System
∗ 2 : w/o LEXUS Navigation System
E32
(GND)
ID Code Box
W–B
1
3P
(GND)
A9
GR 6
Tilt and
Telescopic ECU
Active Control
Engine Mount ECU
LEXUS ES 350 (EM01Y0U)
415
I
(E)
E83
(L)
E26
(E)
E13
4A
1
4E
3
4B
1
4D
1
W–B
W–B
W–B
(GND)
E25
(E)
E11
4J
1
4K
1
W–B
W–B
Glove Box Lamp
Gateway ECU
Windshield Wiper
Relay
Tire Pressure
Warning Select SW
Certification ECU
W–B
W–B
W–B
(GND)
E1
E57
(L)
E21
E19
11
3S (E2)
(CG) 3L
11
3K
12
3J
12
E82
W–B
W–B
W–B
W–B
3H
12
3H
11
(GND)
(E)
E81
W–B
E85
(E)
W–B
E27
(EL)
3C
4
3C
2
Data Link Connector 3
Turn Signal
Flasher
Combination Meter
Headlamp Dimmer
SW Assembly
Luggage Compartment
Door Opener SW (Main)
A/C Amplifier
Tire Pressure
Warning Reset SW
Tire Pressure
Warning ECU
AFS OFF SW
W–B
2
3A
E5
(E)
Outer Mirror
Control ECU
11
3N (GND)
W–B
E66
Steering Sensor
W–B
11
3E
E31
(ESS)
12
3T (E)
W–B
E18
Yaw Rate Sensor
W–B
11
3O
E88
(GND)
Vanity Lamp SW
(LH)
W
11
3K
Q10
(E)
A/C Control
Assembly
(GND)
W–B
E3
Vanity Lamp SW
(RH)
W
Q11
(E)
5
3P EQ1
18
W–B
EE1
1
W–B
(∗1)
(∗2)
W–B
2
4A (ILL–)
W–B
F1
E76
3
4H (E)
W–B
Rear Sunshade SW
E75
2
4H (E)
W–B
W–B
FE1
20
E69
(GND)
W–B
Radio Receiver
Assembly
(Shielded)
B2
E62
E73
(Shielded)
E4
(GND1)
(GND)
W–B
BR
B
W–B
Radio Receiver
Assembly
Multi–Display
A 1
B 6 B 5
W–B
W–B
W–B
Junction
Connector
E91
(
A
)
, E92
(
B
)
(Shielded)
(Shielded)
Luggage
Compartment
Door Opener SW
E56
1
4F (L)
W–B
Security
Indicator Lamp
W–B
6
GE1
G1
9
4B (E)
W–B
Clock Assembly
Console Box Lamp
Retractable
Outer Mirror SW
Shift Lock
Control ECU
E77
(E) 3B
2
W–B
1
3C
W–B
(LFG)
416
LEXUS ES 350 (EM01Y0U)
I GROUND POINT
F2
(E)
F3
(GND)
IG1 Relay
(E)
(GND1)
Main Body ECU
ACC Relay
TAIL Relay
Tilt Motor
(E1)
E6
DR
1
11
EM2
E37
W–B
W–B
W–B
W–B
W–B
W–B W–B
W–B
W–B
(E)
E15
W–B
9
2
6
1
3
8
W–B
W–B
(E)
Q7
Q2
W–B
W–B
EQ1 11
(–)
(E)
(E)
(E)
6
IE1
W–B
I3
I2
I4
I5
10
11
W–B
(GND3)
7 W–B
(EW)
E29
W–B
(GND)
a2
Ia1
8
DF
10
DE
1
BR
W–B
W–B
W–B
Power Outlet Socket
Airbag Sensor
Assembly Center
Junction Connector
Seat Heater SW
Windshield Wiper
SW Assembly
Outer Rear
View Mirror (LH)
Power Window ECU
(Front LH)
Door Lock Assembly
(Front LH)
Power Window Master SW
Overhead J/B
Electrical Key
Oscillator (Front Door LH)
W–B
5 W–B W–B
11
FE1
14
FE1
W–B
W–B
(–)
H4
(E)
H2
H3
(GND)
Z2
8 HZ1
(E)
W–B
W–B
W–B
W–B
BR
W–B
6
HE1
W–B 4
Outer Rear
View Mirror (RH)
Door Lock Control SW
Door Lock Assembly
(Front RH)
Electrical Key
Oscillator (Front Door RH)
Power Window ECU
(Front RH)
W–B
H5
(E)
W–B
H6
(E)
Power Window SW
(Front RH)
E80
(GND)
E78
W–B
Steering Lock
ECU
E2
Sliding Roof
Control ECU
Cigarette Lighter
LEXUS ES 350 (EM01Y0U)
417
I
J2
(E)
17
JM1
M1
MT1 5
T14
(E)
(E)
T13
(GND)
(E)
T18
W–B
(∗3)
W–B
W–B
W–B
(∗4)
W–B
W–B
W–B
W–B
W–B
W–B
3
(GND)
T4
W–B
(GND)
M5
11
W–B
Door Lock Assembly
(Rear RH)
Door Control
Receiver
Occupant
Classification
ECU
Seat Heater (RH)
Power Seat SW
(Front RH Seat)
Power Seat SW
(Front RH Seat
Lumbar Support
Control)
1
(PGND)
Seat Belt
Control ECU
M21
(E)
Clearance
Warning ECU
M2
7
4 W–B
W–B
(E)
6
W–B
M17
Junction
Connector
J3
(E)
W–B
Power Window ECU
(Rear RH)
J4
Power Window SW
(Rear RH)
W–B
(E)
(GND)
BR
b2
8
Jb1
W–B
W–B
(GND)
T6
Position Control
ECU and SW
(Front RH Seat)
W–B
W–B
(E)
Front Seat Inner
Belt (RH)
T2
W–B
Junction
Connector
M12
W–B
5
MT2
Seat Climate Control
Blower (Front RH Seat
Back)
BR
T16
(GND)
(GND)
W–B
T17
Seat Climate Control
Blower (Front RH Seat
Cushion)
∗ 3 : w/ Seat Position Memory
∗ 4 : w/o Seat Position Memory
Electrical Key
Oscillator
(Rear Door RH)
418
LEXUS ES 350 (EM01Y0U)
I GROUND POINT
L13
(E)
R6
R1
(E)
R8
(E)
R13
(E)
R1
R11
(E)
R4
(E)
(E)
R12
R14
(E)
(E)
R9
K2
(E)
17
KL1
L1
W–B
W–B
W–B
W–B
W–B
W–B
W–B W–B
W–B
W–B W–B
W–B
6
6
5
2
3
1
8
M2
(GND)
M29
(GND2)
W–B
W–B
W–B
Stereo Component
Amplifier
Door Lock Assembly
(Rear LH)
Fuel Suction Pump
and Gage Assembly
License Plate Lamp (RH)
Rear Combination
Lamp (LH)
Rear Combination
Lamp (RH)
Junction
Connector
Rear Combination Lamp
(RH)
Rear Combination Lamp
(LH)
Door Lock Assembly
(Luggage)
7
25
LR1
L24
(E)
W–B
Rear Sunshade
Relay
7
c2
(GND)
K3
(E)
Power Window ECU
(Rear LH)
Power Window SW
(Rear LH)
(E)
K4
BR
W–B
W–B
W–B
8
Kc1
W–B
W–B
R10
(E)
Luggage
Electrical Key SW
(E)
U16
W–B
Seat Heater (LH)
(E2)
W–B
(E1)
U11
W–B
Power Seat SW
(Front LH Seat
Leg Support
Control)
12
5
U2
11
Junction
Connector
4
1
5
LU1
W–B W–B W–B
(∗3)
(∗3)
Junction
Connector
L16
5
(E)
W–B
Center Stop Lamp
L3
W–B
(E)
U1
Front Seat Inner
Belt (LH)
Seat Climate
Control Blower
(Front LH Seat
Cushion)
(GND)
U15
W–B
Seat Climate
Control Blower
(Front LH Seat
Back)
(GND)
U14
W–B
Power Seat SW
(Front LH Seat)
(E)
U13
W–B
Power Seat SW
(Front LH Seat
Lumbar Support
Control)
(E)
U12
W–B
(E2)
W–B
W–B
W–B
W–B
N1
W–B
N1
(L)
Rear Window Defogger
Position Control
ECU and SW
(Front LH Seat)
(GND)
U3
(∗4)
W–B
(∗3)
W–B
∗ 3 : w/ Seat Position Memory
∗ 4 : w/o Seat Position Memory
Electrical Key
Oscillator
(Rear Door LH)
Fuel Lid Opener
Motor
Lamp Failure
Indicator Sensor
LEXUS ES 350 (EM01Y0U)
419
I
: Parts Location
Code See Page Code See Page Code See Page
A27 A 60 B32 57 L16 62
A28 B 60 E37 58 M12 62
A29 54 E91 A 59 R6 65
A30 54 E92 B 59 U2 66
: Relay Blocks
Code See Page Relay Blocks (Relay Block Location)
1 22 Engine Room R/B (Engine Compartment Left)
:
Junction Block and Wire Harness Connector
Code See Page Junction Block and Wire Harness (Connector Location)
1E 24 Engine Room Main Wire and Engine Room J/B (Engine Compartment Left)
3A
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3B
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3C
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3D
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3E
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3H
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3J
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3K
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3L
36 Instrument Panel Wire and J/B No.3 (Instrument Panel Left)
3N
3O
3P
3R
3S
3T
3U
4A
42 Instrument Panel Wire and J/B No.4 (Instrument Panel Right)
4B
42 Instrument Panel Wire and J/B No.4 (Instrument Panel Right)
4D
42 Instrument Panel Wire and J/B No.4 (Instrument Panel Right)
4E
42 Instrument Panel Wire and J/B No.4 (Instrument Panel Right)
4F
42 Instrument Panel Wire and J/B No.4 (Instrument Panel Right)
4H
42 Instrument Panel Wire and J/B No.4 (Instrument Panel Right)
4I
4J
4K
4L
DE
30
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
DF
30
Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel) DG 31 Instrument Panel Wire and Instrument Panel J/B (Lower Finish Panel)
DM
30
DR
30
420
LEXUS ES 350 (EM01Y0U)
I GROUND POINT
: Connector Joining Wire Harness and Wire Harness
Code See Page Joining Wire Harness and Wire Harness (Connector Location)
BA3
68 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B and Engine Room J/B)
BA4
68 Engine Wire and Engine Room Main Wire (Inside of the Engine Room R/B and Engine Room J/B)
EA1 69 Instrument Panel Wire and Engine Room Main Wire (Left Kick Panel)
EE1 69 Instrument Panel Wire and Instrument Panel Wire (Near the Shift Lever)
EM2 69 Instrument Panel Wire and Floor No.2 Wire (Right Kick Panel)
EQ1 69 Instrument Panel Wire and Roof Wire (Front Pillar LH)
FE1 69 Instrument Panel No.2 Wire and Instrument Panel Wire (Under the Console Box)
GE1 69 Instrument Panel No.3 Wire and Instrument Panel Wire (Instrument Panel Center)
HE1 69 Front Door RH Wire and Instrument Panel Wire (Right Kick Panel)
HZ1 70 Front Door RH Wire and Electrical Key Wire Harness Front RH (Front Door Inner Panel RH)
IE1 69 Front Door LH Wire and Instrument Panel Wire (Left Kick Panel)
Ia1 70 Front Door LH Wire and Electrical Key Wire Harness Front LH (Front Door Inner Panel LH)
JM1 70 Rear Door No.1 Wire and Floor No.2 Wire (Center Pillar RH)
Jb1 70 Rear Door No.1 Wire and Electrical Key Wire Harness Rear RH (Rear Door Inner Panel RH)
KL1 70 Rear Door No.2 Wire and Floor Wire (Center Pillar LH)
Kc1 70 Rear Door No.2 Wire and Electrical Key Wire Harness Rear LH (Rear Door Inner Panel LH)
LA1 69 Floor Wire and Engine Room Main Wire (Cowl Side Left)
LR1 70 Floor Wire and Luggage Room Wire (Roof Side Rear Inner Panel LH)
LU1 71 Floor Wire and Front Seat LH Wire (Under the Front LH Seat)
MT1
71 Floor No.2 Wire and Front Seat RH Wire (Under the Front RH Seat)
MT2
71 Floor No.2 Wire and Front Seat RH Wire (Under the Front RH Seat)
: Ground Points
Code See Page Ground Points Location
A1
68 Front Left Fender Apron
A2
68 Front Left Fender Apron
A3
68 Front Right Fender Apron
A4
68 Front Right Fender Apron
A5 69 Cowl Side Left
A6 69 Cowl Side Right
B1 68 Left Side of the Cylinder Head
B2 68 Left Side of the Cylinder Block
B3 68 Right Side of the Cylinder Block
E1 69 Left Side of the Instrument Panel Reinforcement
E2 69 Instrument Panel Brace LH
E3 69 Right Side of the Instrument Panel Reinforcement
E4 69 Instrument Panel Brace RH
L1 70 Rear Pillar LH
M1
70 Roof Side Rear Inner Panel RH
M2
70 Roof Side Rear Inner Panel RH
N1 70 Rear Pillar RH
R1 70 Roof Side Rear Inner Panel LH
LEXUS ES 350 (EM01Y0U)
421
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Fast Download Speeds
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Print one or all pages of your manual
$36.99
2008 Lexus ES350 OEM Service & Repair Manual
Engine covered:
- 3.5L 2GR-FE V6
The 2008 Lexus ES350 OEM Service & Repair Manual offers comprehensive factory-level procedures tailored specifically for maintaining and repairing the ES350 equipped with the 3.5L 2GR-FE V6 engine. It’s the same reference used by dealership technicians and provides a deep dive into key systems including engine, transmission, brakes, and HVAC.
This manual walks through everything from engine mechanical teardown to transmission servicing (U660E), power steering diagnostics, suspension checks, and brake system repairs. Interior and exterior maintenance—like seat controls, window mechanisms, and body adjustments—are also included with clear procedural steps.
Content overview:
- General Information – Introduction, preparation, service specifications, maintenance schedules, and repair guidelines
- 2GR-FE Engine – Complete coverage of engine mechanical, control system, fuel, intake, exhaust, cooling, lubrication, ignition, starting, and charging systems
- Transmission & Driveline – U660E automatic transaxle, drive shaft, and axle service procedures
- Suspension & Steering – Front and rear suspension, steering column, and power steering system diagnostics and repair
- Brake System – Brake control, hydraulic brake components, and parking brake servicing
- HVAC – Air conditioning, heating, ventilation, and climate control system repairs
- Restraints & Safety Systems – Pre-collision system, seat belt service, and supplemental restraint system (SRS) repairs
- Electrical Systems – Theft deterrent, engine immobilizer, lighting, wipers, washer system, power distribution, power windows, mirrors, locks, and seat controls
- Interior & Body – Instrument panel, seats, door/hood components, sliding roof, windshield/window glass, and interior accessories
- Convenience & Electronics – Navigation, audio/visual systems, cruise control, park assist/monitoring, horn, garage door opener, and CAN communication
- Wiring Diagrams – Relay locations, circuit diagrams, connector lists, power source charts, and overall Lexus ES350 electrical wiring diagrams
Ideal for professional mechanics and experienced DIYers alike, this manual keeps the guesswork to a minimum. Whether you're chasing down an electrical fault or performing scheduled maintenance, the 2008 Lexus ES350 factory manual gives you the structure, torque specs, and service logic needed to get the job done properly.
Printable: Yes
Language: English
Compatibility: Pretty much any electronic device, incl. PC & Mac computers, Android and Apple smartphones & tablet, etc.
Requirements: Adobe Reader (free)
