Lexus RX III (2008-2012) (under center console) Wiring diagrams

+ECU 30 13 BECU CANL 31 32 29 14 ALTB IG ACAN BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM CONSOLE BOX ILLUMINATION LIGHT ASSEMBLY D/L ALT B FUSE DC/DC FUSE DISTANCE CONTROL DOOR CONTROL SWITCH ASSEMBLY ECU-B 1 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) ENTER FRONT WIPER DEICER SWITCH FUSE GAUGE 2 FUSE GLOVE BOX LIGHT ASSEMBLY GRN WIRE GRY WIRE HAZARD WARNING SIGNAL SWITCH ASSEMBLY HEAD TAIL AUTO HEATER CONTROL PANEL (RADIO RECEIVER ASSEMBLY) ADIM HOOK HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ILL ILL ILL- REMOTE OPERATION SWITCH LEFT STEERING PAD SWITCH LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MAIN BODY ECU INSTRUMENT PANEL J/B ASSEMBLY (LEFT SIDE OF DASH) MENU MODE MONITOR MULTI INFORMATION DISPLAY ASSEMBLY MULTI- ILL DISPLAY ASSEMBLY NAVIGATION RECEIVER ASSEMBLY (W/ NAVIGATION) OFF (CANADA) DRL OFF (USA) HEADLIGHT DIMMER SWITCH ASSEMBLY PANEL FUSE PNK ADIM WIRE PNK WIRE RED WIRE SEEK SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY SWG TAIL TAIL RELAY VIO WIRE VOICE VOLUME RIGHT STEERING PAD SWITCH W/ NAVIGATION W/O NAVIGATION WHT WIRE WHT/BLK WIRE YEL WIRE

ADIM BLK WIRE BLU WIRE BRN WIRE CERTIFICATION ECU ASSEMBLY (RIGHT SIDE OF DASH) COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CANH CANL DCM (TELEMATICS TRANSCEIVER) (UNDER CENTER CONSOLE) DOWN ENGINE SWITCH FRONT POWER WINDOW REGULATOR SWITCH ASSEMBLY FUEL LID OPENER GRN WIRE GRY WIRE HEADLIGHT CLEANER SWITCH ASSEMBLY LIGHT CONTROL RHEOSTAT LT GRN WIRE MAIN SWITCH ASSEMBLY MASTER SWITCH ASSEMBLY MULTIPLEX NETWORK ODO TRIP ORG/ WIRE PNK WIRE RADIO RECEIVER ASSEMBLY RED WIRE SATELLITE SWITCH SET SEAT HEATER SHIFT POSITION INDICATOR 2 1 ILL- ILL+ SUSPENSION CONTROL SWITCH SUSPENSION CONTROL SWITCH 2 SWG SWIL SWITCH VIO WIRE VSC OFF SWITCH W/ NAVIGATION W/O NAVIGATION WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY TAIL YEL WIRE

2 5 4 1 RSSI DATA +5 GND 5 15 16 RCO RDA RSSI 6 9 8 4 3 2 1 13 7 CPUB CANP CANN 7 8 4 CANN CANP PBCL 9 10 CANH CANL BLK WIRE BLU WIRE BRN WIRE CANN CERTIFICATION ECU ASSEMBLY (RIGHT SIDE OF DASH) COMPUTER DATA LINES COMPUTER DATA LINES SYSTEM DOOR CONTROL RECEIVER (RIGHT "C" PILLAR) ECU ASSEMBLY (IN LEFT FRONT DOOR) ECU-B 1 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FLCY CANP CANN FUSE GND TIM- GRN WIRE GRY WIRE HEADLAMP DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT "B" PILLAR) LEFT FRONT POSITION CONTROL ECU, SWITCH ASSEMBLY LEFT FRONT SEAT INNER BELT ASSEMBLY (UNDER DRIVER'S SEAT) LEFT OUTER MIRROR CONTROL LT BLU WIRE LT GRN WIRE MAIN BODY ECU MM MSWE GND MSW MULTIPLEX TILT, TELESCOPIC ECU (AT BASE OF STEERING COLUMN) ORG/ WIRE PNK WIRE POWER TILT MOTOR (ON STEERING COLUMN) RED WIRE RELAY ENERGIZED SEAT MEMORY SWITCH SET- SYSTEM TELESCO SHORT TELESCOPIC MOTOR TELESCOPIC SENSOR TEM TES TI, TE FUSE TILT DOWN TILT UP TELESCO STRETCH TILT, TELESCOPIC SWITCH TIM TIS VCE VCI VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

-TW ADAPTER ASSEMBLY 1 STEREO JACK AGND ALI ALO ARI ARO ASGN AUXI AUXO BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY CONSOLE) GRN WIRE GRY WIRE LEFT QUARTER SIDE SPEAKER ASSEMBLY (W/ 15 SPEAKER) LEFT REAR SPEAKER ASSEMBLY LEFT REAR SPEAKER ASSEMBLY 2 LT BLU WIRE LT GRN WIRE MI+ MO- NCA WIRE NTSC PBLT PNK WIRE RADIO RECEIVER ASSEMBLY RED WIRE REMOTE OPERATION SWITCH RIGHT QUARTER SIDE SPEAKER ASSEMBLY (W/ 15 SPEAKER) RIGHT REAR SPEAKER ASSEMBLY RIGHT REAR SPEAKER ASSEMBLY 2 SLD SLDI SLDO STEREO JACK ADAPTER ASSEMBLY 1 (MULTI-MEDIA INTERFACE ECU) UNDER CENTER FLOOR VIO WIRE W/ MULTI-MEDIA INTERFACE ECU W/O MULTI-MEDIA INTERFACE ECU WHT WIRE WHT/BLK WIRE WUI WUO YEL WIRE

1 2 3 4 5 6 7 8 R+ L+ ACAN ADIM ADPG AIR ARON BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DOOR LOCKS SYSTEM GRN WIRE GRY WIRE HEADPHONE TERMINAL HEATER CONTROL PANEL (RADIO RECEIVER ASSEMBLY) LEFT SET BACK DISPLAY LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) MULTI-DISPLAY CONTROLLER MUTE NCA WIRE NTSC PBEW PNK WIRE RED WIRE RIGHT SET BACK DISPLAY SLDA SLDB SUB-ASSEMBLY (UNDER CENTER CONSOLE) SUPPLEMENTAL RESTRAINTS SYSTEM VA- VAL+ VAR+ VD VG VIO WIRE VMTR VV- WHT WIRE WHT/BLK WIRE YEL WIRE

+B TX- TX+ PNK WIRE 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 +B 1 3 5 BI SI EI PNK WIRE 1 5 3 6 4 2 BI EI SI EO SO BO 2 1 PNK WIRE 23 13 14 10 SWG TX+ TX- BLK WIRE BLU WIRE BRN WIRE CANL CANH BLSW TX- TX+ CB+ CLEARANCE WARNING BUZZER 1 (CENTER OF DASH) COMPUTER DATA LINES SYSTEM CV+ CV- CV+ CGND CB+ SCV- SCV+ SGND SCB+ EF BBZ ENGINE ROOM FUSE GRN WIRE GRY WIRE GVIF HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT STEERING PAD SWITCH LEFT ULTRASONIC SENSOR 1 (LEFT FRONT CORNER OF ENGINE COMPT) LEFT ULTRASONIC SENSOR 2 (BEHIND REAR BUMPER) LEFT ULTRASONIC SENSOR 3 (BEHIND REAR BUMPER) LT BLU WIRE MONITOR MULTI-DISPLAY CONTROLLER SUB-ASSEMBLY (UNDER CENTER CONSOLE) NAVIGATION RECEIVER ASSEMBLY NCA WIRE ORG/ WIRE PARKING ASSIST ECU (RIGHT SIDE OF DASH) PNK WIRE RAD 1 FUSE RAD 3 FUSE R/B ASSEMBLY (ON LEFT SIDE SIDE OF ENGINE COMPT) RADIO 2 FUSE RED WIRE RIGHT ULTRASONIC SENSOR 1 (RIGHT FRONT CORNER OF ENGINE COMPT) RIGHT ULTRASONIC SENSOR 3 (BEHIND REAR BUMPER) SCB+ SCV+ SGND SIDE TELEVISION CAMERA ASSEMBLY (FRONT PASSENGER'S DOOR) SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

ANTI-LOCK BRAKES SYSTEM BLK WIRE BLU WIRE BRN WIRE CIG RADIO 2 FUSE FUSE EXTERIOR EXTERIOR LIGHTS LIGHTS, SYSTEM HEADLIGHTS SYSTEMS FROM FROM FILTER FUSE (DIAGRAM 1 OF 4) FRONT POWER POINT SOCKET ASSEMBLY FUSE GAUGE 1 FUSE GRN WIRE GRY WIRE HEATER FUSE FUSE FR RR FR WIP WASH WIP FUSE FUSE FUSE INSTRUMENT CLUSTER, MIRRORS, NAVIGATION SYSTEMS LT BLU WIRE MAIN BODY ECU NAVIGATION SYSTEMS ORG/ WIRE P/POINT FUSE PNK WIRE REAR POWER POINT SOCKET ASSEMBLY RED WIRE RELAY RELAY RELAY RH LH S-HTR S-HTR FUSE FUSE RR WASH FUSE SEATS SYSTEM SHIFT INTERLOCK SYSTEM SOUND SYSTEMS SOUND, NAVIGATION SYSTEMS TAIL PANEL FUSE FUSE MAIN BODY ECU TRLY TAIL RELAY TO D/L ALT B TO ECU-ACC TO POWER MANAGEMENT CONTROL ECU (DIAGRAM 4 OF 4) TRANSMISSIONS SYSTEM TRUNK, TAILGATE, FUEL DOORS SYSTEM VIO WIRE WARNING SYSTEM WHT WIRE WHT/BLK WIRE WIPER/ WASHER, SEATS SYSTEMS YEL WIRE

8 3 4 2 PNK WIRE BLK WIRE BLU WIRE BOF BOR BRN WIRE CLEARANCE WARNING BUZZER 1 (CENTER OF DASH) CLEARANCE WARNING ECU ASSEMBLY (RIGHT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CONTROL ECU (LEFT SIDE OF DASH) ENGINE ROOM R/B 2 (LEFT REAR OF ENGINE COMPT) FUSE GRN WIRE HOT IN ON OR START HOT W/ IGCT MAIN RELAY ENERGIZED IGCT 3 FUSE INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT ULTRASONIC LEFT ULTRASONIC SENSOR 1 (LEFT FRONT CORNER OF ENGINE COMPT) LEFT ULTRASONIC SENSOR 3 (BEHIND REAR BUMPER) LT BLU WIRE ORG/ WIRE PARK/NEUTRAL POSITION SWITCH PNK WIRE POWER MANAGEMENT RED WIRE RIGHT ULTRASONIC SENSOR 1 (RIGHT FRONT CORNER OF ENGINE COMPT) RIGHT ULTRASONIC SENSOR 2 (BEHIND REAR BUMPER) RIGHT ULTRASONIC SENSOR 3 (BEHIND REAR BUMPER) SENSOR 2 (BEHIND REAR BUMPER) SOF BBZ EF SOR WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 13 14 IG 40 26 20 25 GND IG PNK WIRE BKUP LP RELAY BLK WIRE BLU WIRE BRN WIRE CB+ CGND CB+ CV+ ENGINE ROOM R/B 2 (LEFT REAR OF ENGINE COMPT) FUSE GRN WIRE HOT IN ON OR START INNER REAR VIEW MIRROR ASSEMBLY INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) J/C MIRRORS SYSTEM NCA WIRE OVERHEAD MODULE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) REAR TELEVISION CAMERA ASSEMBLY (LOWER CENTER OF BACK DOOR) RED WIRE REV EC+ EC- CV- CV+ PNK WIRE SIDE (LEFT OF DASH) TO BACKUP LAMPS CIRCUIT VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

+B SPI+ SPI- 1 2 3 4 5 6 7 USB USBG VOT+ USBV VOT- VOR- VOR+ 5 3 4 1 BBO- AIR BAG SENSOR ASSEMBLY (BELOW CENTER CONSOLE) BACKUP BATTERY (MAYDAY BATTERY) (RIGHT SIDE OF DASH) BBI+ BBO- BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DCM (TELEMATICS TRANSCEIVER) (UNDER CENTER CONSOLE) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GPS ANTENNA GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ILL+ GSW SIL SIG- INSTRUMENT CLUSTER SYSTEM INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT GRN WIRE MACC MAYDAY/TEL FUSE MCO- MIN MUTE MCO+ MCO- NAVIGATION RECEIVER ASSEMBLY (W/ NAVIGATION) NCA WIRE ORG/ WIRE OVERHEAD MODULE PNK 10 4 FR- FR+ WIRE PNK WIRE RADIO 2 FUSE RADIO RECEIVER ASSEMBLY RED WIRE RIGHT FRONT SPEAKER ASSEMBLY 2 RIGHT FRONT SPEAKER ASSEMBLY 3 RRID SGND SGND MCVD MCI+ MCI- SLED SPDP SPO+ SPO- STEREO COMPONENT AMPLIFIER ASSEMBLY (LUGGAGE COMPT) TELEPHONE ANTENNA TMUT TWR- TWR+ USB USBG USBV VIO WIRE VOR- VOT+ W/ NAVIGATION W/O NAVIGATION WHT WIRE WHT/BLK WIRE YEL WIRE