Lexus ES 300 330 4th generation was produced in 2001, 2002, 2003, 2004, 2005 and 2006 with body indices v30. In this publication we will show the locations of all electronic control units, a detailed description of fuses and relays Lexus ES 330 300 5 generation with fuse box diagrams and photo examples of performance. Note the cigarette lighter fuse.
The number of elements in the boxes and their location may differ and depends on the configuration, year of manufacture and region of delivery.
Contents
Passenger compartment
Location
Layout
Assignment
- Fuse box
- Body electrical control unit
- Adjustable suspension control unit
- Key transponder amplifier
- Air conditioner control unit
- Radio with display
- Anti-theft control unit
- Audio amplifier (except MARK LEVINSON)
- Skid Control
- The engine control unit
- Distribution block
- Mirror memory unit
- Headlight range control unit
- Gear selector lock block
- Central airbag unit
- Wiper relay
- Turn signal relay
Fuse box
Fuse box is located at the bottom of the dashboard, on the driver’s side, behind the protective cover.
The direction indicator relay is mounted separately on the left pillar.
Example of a diagram from the box cover
Check the purpose of the elements with your diagrams on the box cover.
Diagram
Description of fuses
| 1 | 10A ECU-B – Anti lock braking system, air conditioning, clock, instrument cluster, cruise control, gearbox control unit, automatic transmission indicator, engine control unit, immobilizer, headlights, interior lighting, ignition key buzzer, automatic turn signal deactivation , sunroof, body electrical equipment control unit, audio system, navigation, power windows, seat belt buzzer, anti-theft system, central locking, central locking control unit, vehicle stabilization system |
| 2 | 7.5A DOME – Ignition switch lighting, interior lighting, personal lighting, vanity mirror lighting, garage door control unit, clock, outside temperature display, multi – information display |
| 3 | 15А CIG – Cigarette lighter |
| 4 | 5A ECU-ACC – Clock, instrument cluster, body ECU, mirror control unit |
| 5 | 10А RAD NO.2 – Audio system, navigation |
| 6 | 15A POWER POINT – Socket |
| 7 | 20А RAD NO.1 – Audio system, navigation |
| 8 | 10A GAUGE1 – Instrument cluster, clock, outside temperature sensor, multi – information display, gearbox selector lock, seat belt buzzer (indicator) |
| 9 | 10А ECU-IG – Anti-lock braking system, automatic lighting control, headlights, interior lighting, ignition key buzzer, sunroof, body electrical equipment control unit, glass lifters, anti-theft system, central locking, |
| 10 | 25A WIPER – Screen wiper |
| 11 | 10A HTR – Air conditioner |
| 12 | 10A MIR HTR – Heated mirrors |
| 13 | 5A AM1 – Starting system |
| 14 | 15A FOG – Front fog light |
| 15 | 15А SUN − SHADE – Rear curtain |
| 16 | 10A GAUGE2 – Auto-dimming interior mirror, compass, sunroof, reversing lamps, automatic transmission indicator, cruise control |
| 17 | 10A PANEL – Glove box lighting, clock, outside temperature display, multi – information display, instrument cluster lighting, overdrive indicator |
| 18 | 10A TAIL – Side light, license plate light |
| 19 | 20A PWR NO.4 – Rear left power window |
| 20 | 20A PWR NO.2 – Driver’s side window lifter, passenger door lock |
| 21 | 7,5A OBD – Diagnostic connector |
| 22 | 20A SEAT HTR – Heated seats |
| 23 | 15A WASHER – Washer of a windshield |
| 24 | 10A FAN RLY – Cooling fan |
| 25 | 15A STOP – Brake Light Bulbs, Secondary Brake Light, Anti Lock Braking System, Cruise Control |
| 26 | 5A FUEL OPEN – Fuel filler flap |
| 27 | 25A DOOR NO.2 – Control unit for body electrical equipment (central locking, wireless remote control system, automatic door locking) |
| 28 | 25A AMP – Amplifier |
| 29 | 20A PWR NO.3 – Rear right glass lift |
| 30 | 30A PWR SEAT – Power Seats |
| 31 | 30A PWR NO.1 – Glass lift from the driver’s side, locking the driver’s door, sunroof |
| 32 | 40A DEF – Heated rear window |
The fuse number 3 at 15A is responsible for the operation of the cigarette lighter.
Some relays can be mounted on the back of the box.
Relay decoding
| R1 | Fog light |
| R2 | Side light |
| R3 | Auxiliary relay |
| R4 | Heated rear window |
| R5 | Ignition |
| R6 | Window power |
Additional elements
Diagram
Appointment
- Distribution block
- Sunroof control unit
- Front passenger door control unit
- Rear right door control unit
- Rear sun shade relay
- Audio amplifier (MARK LEVINSON)
- Navigation control unit
- Telephone control unit
- Lamp failure control unit
- Rear left door control unit
- Control unit in the front driver’s door
Engine compartment
Location
Layout
Decoding
- Fuse and relay box
- Left headlight control unit
- ABS relay box
- Right headlight control unit
- Skid Control
Fuse and relay box
Under the hood, the main fuse and relay box is located on the left side of the engine compartment.
Diagram
Appointment
| 1 | 100А ALT – 2AZ-FE (2002-2003): Fuses: “DEF”, “PWR NO.1”, “PWR NO.2”, “PWR NO.3”, “PWR NO.4”, “STOP”, “DOOR NO.2”, “OBD”, “PWR SEAT”, “FUEL OPEN”, “FOG”, “AMP”, “PANEL”, “TAIL”, “AM1”, “CIG”, “POWER POINT”, “RAD NO.2”, “ECU-ACC”, “GAUGE1”, “GAUGE2”, “ECU-IG”, “WIPER”, “WASHER”, “HTR (10 A)”, “SEAT HTR”, and ” SUN-SHADE “ |
| 120А ALT – 1MZ-FE, 3MZ-FE, 2AZ-FE (2003-2006): Fuses: DEF ”,“ PWR NO.1 ”,“ PWR NO.2 ”,“ PWR NO.3 ”,“ PWR NO. 4 “,” STOP “,” DOOR NO.2 “,” OBD “,” PWR SEAT “,” FUEL OPEN “,” FOG “,” AMP “,” PANEL “,” TAIL “,” AM1 “,” CIG ”,“ POWER POINT ”,“ RAD NO.2 ”,“ ECU-ACC ”,“ GAUGE1 ”,“ GAUGE2 ”,“ ECU-IG ”,“ WIPER ”,“ WASHER ”,“ HTR (10 A) ”, “SEAT HTR”, and “SUN-SHADE” | |
| 2 | 60A ABS NO.1 2002-2003: Anti lock braking system, vehicle stabilization system, traction control, brake assist system |
| 50A ABS NO.1 – 2003-2006: Anti lock braking system, vehicle stabilization system, traction control, brake assist system | |
| 3 | 15A HEAD LH LWR – Left low beam, instrument cluster, fog light, body control unit |
| 4 | 15A HEAD RH LWR – Dipped right light, headlight corrector, body control unit |
| 5 | 5A DRL – Daytime running lights |
| 6 | 10A A / C – Air Conditioning |
| 7 | Not used |
| 8 | Not used |
| 9 | Not used |
| 10 | 40А MAIN – Fuses: “HEAD LH LWR”, “HEAD RH LWR”, “HEAD LH UPR”, “HEAD LH UPR” and “DRL” |
| 11 | 40A ABS No.2 – Anti lock braking system, vehicle stabilization system, traction control, brake assist system |
| 12 | 30A RDI – Engine cooling fan |
| 13 | 30A CDS – Air conditioning fan |
| 14 | 50A HTR – Air Conditioning |
| 15 | 30A ADJ PDL – Electric gas pedal |
| 16 | 30A ABS No.3 – Anti lock braking system, vehicle stabilization system, traction control, brake assist system |
| 17 | 30A AM2 – Starting system, fuses: “IGN” and “IG2” |
| 18 | 10А HEAD LH UPR – High beam left |
| 19 | 10A HEAD RH UPR – High beam right |
| 20 | 5A ST – Instrument cluster, starter, ignition |
| 21 | 5A TEL – Phone |
| 22 | 5А ALT-S – Battery charging system |
| 23 | 15А IGN – Starting system |
| 24 | 10A IGN2 – Anti lock brake system. battery charging system, instrument cluster, cruise control, transmission control unit, automatic transmission indicator, engine control unit, seat belt indicator, vehicle stabilization system, traction control |
| 25 | 25A DOOR1 – Body electrical equipment control unit, anti-theft system, central locking, central locking control unit |
| 26 | 20A EFI – Cruise control, transmission control unit, automatic transmission indicator, engine control unit |
| 27 | 10А HORN – Sound signal |
| 28 | 30A D.C.C – Fuses: “ECU-B”, “RAD NO.1” and “DOME” |
| 29 | 25A A / F – Engine control unit |
| 30 | Not used |
| 31 | 10А ETCS – Engine control unit, cruise control |
| 32 | 15А HAZ – Direction indicators, alarm |
| R1 | Not used |
| R2 | Not used |
| R3 | Daytime running lights (No.2) |
| R4 | Daytime running lights (No.3) |
| R5 | Cooling fan (No.2) |
| R6 | Daytime running lights (No.4) |
ABS relay box
Located next to the battery.
Diagram
Designation
1 – 7.5А ABS NO.4 – Anti lock braking system, vehicle stabilization system, traction control, brake assist system
R1 – Not used
R2 – Anti-lock braking system
R3 – ABS
That’s all. If you have something to add – write in the comments.