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

1 5 8 9 PNK WIRE 23 24 PNK CANH CANL WIRE 26 20 25 PNK IG WIRE AFS FUSE (ON LEFT SIDE OF ENGINE COMPT) AUTO TAIL BLK WIRE BLU WIRE BRN WIRE CANADA USA COMBINATION METER ASSEMBLY COMPUTER DATA INIT LINES SYSTEM COMPUTER DATA LINES SYSTEM D/L ALTB FUSE ECU- IG 1 FUSE ECU-ACC FUSE ECU-B 1 FUSE ECU-IG 1 3 FUSE ENGINE ROOM R/B ASSEMBLY FUSE GAUGE 2 FUSE GRN WIRE GRY WIRE HEAD HEAD CANL CANH COMPUTER DATA LINES SYSTEM HEADLIGHT DIMMER SWITCH ASSEMBLY HEADLIGHT SWIVEL ECU ASSEMBLY (LEFT END W/ DISPLAY W/O DISPLAY OF DASH) HID TYPE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INNER REAR VIEW MIRROR ASSEMBLY INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEFT HEADLIGHT ASSEMBLY LH E LH- RH- SML LH+ LHM+ LIGHT CONTROL SWITCH LIN LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) OFF DRL OFF ORG/ WIRE PNK WIRE RED WIRE RH E RHM + RIGHT HEADLIGHT ASSEMBLY RIGHT REAR HEIGHT CONTROL SENSOR SUB-ASSEMBLY (AT RIGHT REAR SUSPENSION) SHB SHFL SBR SHRL SHG SHRR SMBL SMBR SMGL SMGL SMGR SMGR SML SMR SMR RH+ CANH CANL IGS IG SUSPENSION CONTROL ECU (RIGHT SIDE OF DASH) VIO WIRE W/ AIR SUSPENSION W/O AIR SUSPENSION WHT WIRE WHT/BLK WIRE YEL WIRE

+ECU 26 25 DMON DMDR 3 1 FRCL ILE 31 32 29 ALTB IG 4 11 FRCY BLK WIRE BLU WIRE BRN WIRE CANN CANP COMPUTER DATA LINES SYSTEM CSPT CTY CTY GND D/L ALT B FUSE DOME FUSE FLCL FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START ILLB LILL ILLB RGND LCTY LCYL LEFT FRONT COURTESY LIGHT ASSEMBLY LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT "B" PILLAR) LEFT OUTER MIRROR CONTROL ECU ASSEMBLY (IN LEFT FRONT DOOR) LEFT OUTER REAR VIEW MIRROR ASSEMBLY (ON LEFT FRONT DOOR) LEFT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT REAR "C" PILLAR) LP HTR- LT BLU WIRE LT GRN WIRE MAIN BODY ECU INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) ORG/ WIRE OVERHEAD MODULE PNK WIRE RCTY RCYL RED WIRE RIGHT FRONT COURTESY LIGHT ASSEMBLY RIGHT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT RIGHT "B" PILLAR) RIGHT REAR COURTESY LIGHT ASSEMBLY RIGHT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT RIGHT REAR "C" PILLAR) RRMP SHFT RGND DOOR CILL SPORT LIGHT ASSEMBLY VIO WIRE WHT WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 11 12 CANH 1 2 3 4 5 6 7 8 PNK WIRE 1 2 3 4 5 6 ROUT 1 2 3 4 5 CBP 1 2 PIG PGND 1 2 PIG VGND ASST BLK WIRE BLU WIRE CBPE CEF CEPF COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DRSF DRSR IG DDOK ASST ECU-B 2 FUSE ENGINE COMPT) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF EPS FUSE BLOCK ASSEMBLY (LEFT REAR OF LUGGAGE COMPT) FRONT ACTIVE STABILIZER CONTROL ECU ASSEMBLY (LEFT REAR OF LUGGAGE COMPT) FSGD FUSE FUSIBLE LINK GAUGE 2 FUSE GRN WIRE GRY WIRE HOT AT ALL TIMES HOT IN ON OR START HV BATTERY JUNCTION BLOCK ASSEMBLY (LEFT SIDE OF LUGGAGE COMPT) IG+ CANL INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT GRN WIRE MOTOR RESOLVER MRH MRL+ NCA WIRE ORG/ WIRE PNK CANH WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) POWER STEERING CONVERTER (UNDER CENTER CONSOLE) POWER STEERING ECU ASSEMBLY (LEFT END OF DASH) POWER STEERING MOTOR POWER STEERING MOTOR ASSEMBLY (INTEGRAL TO POWER POWER STEERING TORQUE SENSOR (INTEGRAL TO POWER STEERING ECU ASSEMBLY) PSOK RCOS RSIN REAR ACTIVE STABILIZER CONTROL ECU ASSEMBLY (LEFT REAR OF LUGGAGE COMPT) RED WIRE RGND RSGD SHLD GND SKID CONTROL ECU (RIGHT SIDE OF DASH) STEERING ECU ASSEMBLY) STEERING SENSOR TORQUE SENSOR WHT WIRE YEL 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 IG ABSORBER CONTROL SWITCH AIR SUS FUSE BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DOWN FUSE GRN WIRE GRY WIRE HEIGHT CONTROL VALVE HARNESS ASSEMBLY HOT AT ALL TIMES HOT IN RUN OR START ENGINE ROOM R/B ASSEMBLY (LEFT FRONT FENDER APRON) INSTRUMENT PANEL J/B LDNS LUPS LEFT FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (LEFT REAR OF ENGINE COMPT) LT BLU WIRE LT GRN WIRE ORG/ WIRE PNK WIRE RED WIRE RIGHT FRONT HEIGHT CONTROL SENSOR SUB-ASSEMBLY (RIGHT REAR OF ENGINE COMPT) RM+ RM+ SHFR SBR SGR SHB SHFL SHFR SHG SHRL SLRL SLRR RM- SUSPENSION CONTROL ECU (RIGHT SIDE OF DASH) SUSPENSION CONTROL SWITCH TD DNSW UPSW VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

1 2 3 4 5 6 7 8 9 10 OUT 1 2 3 4 5 6 7 8 IG LR LL PNK WIRE 1 23 24 2 IG+ CANH CANL PNK WIRE 31 2 22 14 25 STPO AUTO BLK WIRE BLU WIRE BRN WIRE CANADA CANL CANH COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM DRL OFF ECM (LEFT SIDE OF ENGINE COMPT) EL ER ENGINE ROOM GAUGE 2 FUSE GRN WIRE GRY WIRE HAZ FUSE HAZARD WARNING SIGNAL SWITCH ASSEMBLY HEAD HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR START LEFT HEADLIGHT ASSEMBLY LIGHT CONTROL LT BLU WIRE LT GRN WIRE MARKER OFF PARKING PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT END OF DASH) RED WIRE RIGHT HEADLIGHT ASSEMBLY RIGHT OUTER MIRROR CONTROL ECU ASSEMBLY (IN RIGHT DOOR) RIGHT OUTER REAR VIEW MIRROR ASSEMBLY SIDE SIDE MARKER SKID CONTROL ECU W/ ACTUATOR ASSEMBLY (RIGHT REAR OF ENGINE COMPT) STOP FUSE R/B ASSEMBLY (LEFT FRONT FENDER APRON) STOP LIGHT CONTROL RELAY ASSEMBLY (LEFT END OF DASH) STP +B SWITCH SWITCH ASSEMBLY TAIL TOWING FUSE TRANSMISSION CONTROL ECU ASSEMBLY (LEFT FRONT OF ENGINE COMPT) TRN+ TRNI TURN TURN SIGNAL FLASHER SIGNAL ASSEMBLY (LEFT SIDE OF DASH) TURN SWITCH USA VIO WIRE WHT WIRE WHT/BLK WIRE WHT/BLU WIRE YEL WIRE

14 13 TRLY FFGO 15 25 HRLY DRL 2 4 11 FLCY FRCY 6 5 3 2 1 CLTB CLTS CLTE 8 5 30 28 29 27 22 21 20 HF HU TAIL 9 10 8 21 CANP CANN RLEW LLEW COMPUTER DATA LINES SYSTEM AIR CONDITIONING TSR TSL SYSTEM AUTO TAIL OFF AUTOMATIC LIGHT CONTROL SENSOR (IF EQUIPPED) (TOP RIGHT SIDE OF DASH) BLK WIRE BLU WIRE BRN WIRE CANADA USA D/L ALTB FUSE DIMMER SWITCH ECU-ACC FUSE ECU-B 1 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FOG LIGHT SWITCH FR FOG FUSE FR FOG RELAY FUSE GAUGE 2 FUSE GRN WIRE GRY WIRE HEAD HEAD FFOG CLTE CLTS CLTB PNK WIRE HEADLAMP DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR ACC HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LCTY INTERIOR LIGHTS 6 19 SYSTEM RCTY BCTY LEFT FOG LIGHT ASSEMBLY LIGHT CONTROL SWITCH LT BLU WIRE LT GRN WIRE MAIN BODY ECU (BEHIND LEFT SIDE OF DASH) ORG/ WIRE PARKING BRAKE SWITCH PD FUSE PNK WIRE RED WIRE RIGHT FOG LIGHT ASSEMBLY TAIL AUTO HEAD OFF DRL OFF DRL OFF TAIL FUSE TAIL RELAY VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BI-XENON FUSE BI-XENON RELAY (HID TYPE) BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY CONTROL DC/DC FUSE DRL RELAY ENGINE ROOM J/B ASSEMBLY (LEFT SIDE OF ENGINE COMPT) EXCEPT HID TYPE HID TYPE EXCEPT LED LED TYPE TYPE FUSE GRN WIRE GRY WIRE H-LP LH HI FUSE H-LP LH LO FUSE H-LP RH HI FUSE H-LP RH LO HALOGEN TYPE HEAD RELAY (LL) HEAD RELAY (RL) HID LED TYPE TYPE HID TYPE HOT AT ALL TIMES LED EXCEPT TYPE LED TYPE LEFT HEADLIGHT ASSEMBLY LEFT HEADLIGHT ASSEMBLY (LED TYPE) LIGHT LIGHT CONTROL LOW (HID) LT GRN WIRE PNK COMPUTER DATA LINES SYSTEM WIRE RED WIRE RIGHT HEADLIGHT ASSEMBLY RIGHT HEADLIGHT ASSEMBLY (HID TYPE) RIGHT HEADLIGHT ASSEMBLY (LED TYPE) WHT/BLK WIRE YEL WIRE

+S SI 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 IG 64 15 56 54 PNK WIRE BLK WIRE BLU WIRE BRN WIRE COMBINATION METER ASSEMBLY COMPUTER DATA LINES SYSTEM CS CHK DCM (TELEMATICS TRANSCEIVER) DOWN ENGINE CONTROLS SYSTEM PNK WIRE ENGINE OIL PRESSURE SWITCH ASSEMBLY (LOWER LEFT FRONT OF ENGINE) ENTER FR FE TX+ FUEL PUMP, FUEL SENDER (TOP OF FUEL TANK) GAUGE 2 FUSE GRN WIRE GRY WIRE HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LEVEL WARNING SWITCH ASSEMBLY LT BLU WIRE LT GRN WIRE LUGGAGE COMPT) MENU MSSL ET ES RHUP RHDW A/B NAVIGATION RECEIVER ASSEMBLY ORG/ WIRE P/SB PBLT PNK CANH CANL WIRE PNK WIRE POWER MANAGEMENT CONTROL ECU (LEFT SIDE OF DASH) RADIO RECEIVER ASSEMBLY RED WIRE RIGHT STEERING PAD SWITCH SEATS SYSTEM SKID CONTROL ECU ASSEMBLY (RIGHT SIDE OF DASH) SOUND SYSTEMS SPDI SPDP SPIRAL CABLE SUB-ASSEMBLY (IN STEERING COLUMN) STEERING PAD SWITCH ASSEMBLY STEREO COMPONENT AMPLIFIER ASSEMBLY VIO WIRE W/ NAVIGATION W/O NAVIGATION WATER TEMPERATURE SWITCH (UNDER FRONT CENTER OF VEHICLE) WHT WIRE WHT/BLK WIRE WINDSHIELD WIPER SWITCH ASSEMBLY YEL WIRE

"B" PILLAR) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 IG 6 5 20 CANP CANN FUL COMPUTER DATA LINES SYSTEM 8 7 CTY BACK DOOR LOCK ASSEMBLY BACK DOOR LOCK ASSEMBLY (W/O POWER BACK DOOR) (LOWER CENTER OF BACK DOOR) BLK WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM ECU-ACC FUSE ECU-B 1 FUSE ENGINE HOOD COURTESY SWITCH (CENTER FRONT OF ENGINE COMPT) ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) ES TX- GAUGE 1 FUSE GRN WIRE GRY WIRE HDD PNK WIRE HDU HOT AT ALL TIMES HOT IN ON OR START HUD ILD ILU ILU ILD HUDO HUDU HUDD INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) MAIN BODY ECU LCTY LEFT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT LEFT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT LEFT REAR "C" PILLAR) LT BLU WIRE LT GRN WIRE METER MIRROR SUB-ASSEMBLY (LEFT SIDE OF DASH) ORG/ WIRE PARKING BRAKE SWITCH ASSEMBLY (LEFT END OF DASH) PNK WIRE POWER BACK DOOR UNIT ASSEMBLY (IF EQUIPPED) (LEFT REAR OF ROOF) RCTY RED WIRE RIGHT FRONT DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT RIGHT "B" PILLAR) RIGHT REAR DOOR COURTESY LIGHT SWITCH ASSEMBLY (AT RIGHT REAR "C" PILLAR) SATELLITE SWITCH SET VIO WIRE WHT WIRE WHT/BLK WIRE YEL WIRE

BLK WIRE BLU WIRE BRN WIRE CANN COMPUTER DATA LINES SYSTEM ECU-B 1 FUSE ENGINE ROOM R/B ASSEMBLY (ON LEFT SIDE OF ENGINE COMPT) FUSE GRN WIRE HEADLIGHT DIMMER SWITCH ASSEMBLY HOT AT ALL TIMES HOT IN ON OR START INSTRUMENT PANEL J/B (LEFT SIDE OF DASH) LT BLU WIRE LT GRN WIRE MSW MULTIPLEX TILT, TELESCOPIC ECU (AT BASE OF STEERING COLUMN) ORG/ WIRE PNK WIRE POWER TILT MOTOR (ON STEERING COLUMN) RED WIRE TELESCO SHORT TELESCO STRETCH TELESCOPIC MOTOR TELESCOPIC SENSOR TEM+ TEM- TI, TE FUSE TILT DOWN TILT UP TILT, TELESCOPIC STRETCH TIM TIS VCE TES VCI WHT WIRE WHT/BLK WIRE YEL WIRE