BMW 4 series F32/F33 facelift (2017-2020) relay energized Wiring diagrams

BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER'S SEAT BACKREST HEATING ELEMENT DRIVER'S SEAT HEATING ELECTRONICS DRIVER'S SEAT SURFACE HEATING ELEMENT FRONT PASSENGER SEAT HEATING ELECTRONICS FRONT PASSENGER'S SEAT BACKREST HEATING ELEMENT FRONT PASSENGER'S SEAT SURFACE HEATING ELEMENT FRONT POWER DISTRIBUTION BOX FUSE 64 FUSE 65 GRN WIRE GRN/VIO WIRE GRY WIRE HEATING/AIR CONDITIONING SYSTEM K-CAN-H BUS SIG K-CAN-L BUS SIG LEFT FOOTWELL) POWER DISTRIBUTION SYSTEM RED WIRE RED/BLU WIRE RELAY ENERGIZED VIO WIRE WHT/BRN WIRE YEL/BRN WIRE YEL/RED WIRE

BRN WIRE BRN/ORG WIRE DRIVER LUMBAR SUPPORT VALVE BLOCK DRIVER'S SEAT PNEUMATIC PUMP DRIVER'S SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT PASSENGER LUMBAR SUPPORT VALVE BLOCK FRONT PASSENGER SEAT PNEUMATIC PUMP FRONT PASSENGER SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT POWER DISTRIBUTION BOX FUSE 27 LEFT FOOTWELL) RED WIRE RED/BLK WIRE RELAY ENERGIZED WHT/YEL WIRE

BLK WIRE BLK/BLU WIRE BLK/WHT WIRE BLK/YEL WIRE BRN WIRE BRN/YEL WIRE DRIVER LUMBAR SUPPORT VALVE BLOCK DRIVER'S SEAT BACKREST WIDTH ADJUSTMENT VALVE BLOCK DRIVER'S SEAT LUMBAR SUPPORT SWITCH DRIVER'S SEAT PNEUMATIC PUMP DRIVER'S SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT PASSENGER LUMBAR SUPPORT SWITCH FRONT PASSENGER LUMBAR SUPPORT VALVE BLOCK FRONT PASSENGER SEAT BACKREST WIDTH ADJUSTMENT VALVE BLOCK FRONT PASSENGER SEAT PNEUMATIC PUMP FRONT PASSENGER SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT POWER DISTRIBUTION BOX FUSE 27 LEFT FOOTWELL) RED WIRE RELAY ENERGIZED W/ ELECTRIC SEAT ADJUSTMENT W/O ELECTRIC SEAT ADJUSTMENT YEL WIRE

BLU WIRE BLU/GRY WIRE BLU/RED WIRE BRN WIRE BRN/BLK WIRE BRN/WHT WIRE DRIVER'S SEAT MODULE FAN FRONT POWER DISTRIBUTION BOX FUSE 164 FUSE 26 FUSE 65 GRN WIRE GRN/BRN WIRE GRN/RED WIRE GRY/WHT WIRE HARDTOP OPERATING UNIT HEATING HOT W/ LEFT FOOTWELL) LEFT NECK WARMER LEFT NECK WARMER BUTTON NCA WIRE NECK WARMER CONTROL ELECTRONICS POWER DISTRIBUTION SYSTEM REAR FUSE CARRIER RED/BLU WIRE RED/BRN WIRE RED/YEL WIRE RELAY ENERGIZED RIGHT NECK WARMER RIGHT NECK WARMER BUTTON VIO/BLU WIRE VIO/GRN WIRE WHT/BLU WIRE WHT/GRN WIRE

BRN WIRE BRN/BLK WIRE COMPUTER DATA LINES SYSTEM FRONT POWER DISTRIBUTION BOX FUSE 141 FUSE 164 FUSE 26 GRN/VIO WIRE GRY WIRE LEFT FOOTWELL) LEFT REAR SEAT HEATING SWITCH POWER DISTRIBUTION SYSTEM REAR DRIVER'S SIDE SEAT BACKREST HEATING ELEMENT REAR DRIVER'S SIDE SEAT CUSHION HEATING ELEMENT REAR DRIVER'S SIDE SEAT HEATING MODULE REAR FUSE CARRIER REAR PASSENGER'S SIDE SEAT BACKREST HEATING ELEMENT REAR PASSENGER'S SIDE SEAT CUSHION HEATING ELEMENT REAR PASSENGER'S SIDE SEAT HEATING MODULE RED/BRN WIRE RED/YEL WIRE RELAY ENERGIZED RIGHT REAR SEAT HEATING SWITCH WHT/BRN WIRE

BLK WIRE BLK/BLU WIRE BLU WIRE BRN WIRE COMPUTER DATA LINES SYSTEM DRIVER LUMBAR SUPPORT VALVE BLOCK DRIVER SEAT MODULE DRIVER'S SEAT BACKREST WIDTH ADJUSTMENT SWITCH DRIVER'S SEAT BACKREST WIDTH ADJUSTMENT VALVE BLOCK DRIVER'S SEAT PNEUMATIC PUMP DRIVER'S SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT PASSENGER LUMBAR SUPPORT VALVE BLOCK FRONT PASSENGER SEAT BACKREST WIDTH ADJUSTMENT SWITCH FRONT PASSENGER SEAT BACKREST WIDTH ADJUSTMENT VALVE BLOCK FRONT PASSENGER SEAT MODULE FRONT PASSENGER SEAT PNEUMATIC PUMP FRONT PASSENGER SIDE SEAT ADJUSTMENT SWITCH BLOCK FRONT POWER DISTRIBUTION BOX FUSE 27 FUSE 68 GRN WIRE LEFT FOOTWELL) ORG/GRN WIRE POWER DISTRIBUTION SYSTEM RED WIRE RED/BLU WIRE RED/WHT WIRE RED/YEL WIRE RELAY ENERGIZED YEL WIRE YEL/BLU WIRE YEL/WHT WIRE

BLK WIRE BLK/RED WIRE BLU WIRE BRN WIRE DIGITAL MOTOR ELECTRONICS (TOP REAR OF ENGINE) FUSE 104 FUSE 165 HOT AT ALL TIMES HOT W/ IGNITION COIL CYLINDER 1 IGNITION COIL CYLINDER 2 IGNITION COIL CYLINDER 3 IGNITION COIL CYLINDER 4 NATURAL VACUUM LEAK DETECTION TEMPERATURE SENSOR, PRESSURE SWITCH NCA WIRE POWER DISTRIBUTION SYSTEM REAR FUSE CARRIER RED/GRN WIRE RED/GRY WIRE RELAY ENERGIZED SPARK PLUG WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE WHT/YEL WIRE YEL/BLU WIRE

BLK/RED WIRE BLU WIRE BLU/BRN WIRE BRN WIRE BRN/BLK WIRE CLUTCH MODULE (M/T) (UNDER LEFT SIDE OF DASH) COMPUTER DATA LINES SYSTEM CRASH SAFETY MODULE ELECTRIC FUEL PUMP CONTROL ELECTRONICS FRONT POWER DISTRIBUTION BOX FUEL INJECTORS (ABOVE 1, 2, 3, 4 CYLINDERS) FUSE 21 GRN WIRE GRN/RED WIRE GRY/YEL WIRE HOT W/ LEFT FOOTWELL) NCA WIRE ORG/ WIRE RED/GRN WIRE RELAY ENERGIZED WHT WIRE WHT/BLK WIRE WHT/BRN WIRE WHT/GRN WIRE YEL/BRN WIRE

ACCELERATOR PEDAL MODULE BLK WIRE BLK/GRN WIRE BLK/RED WIRE BLK/YEL WIRE BLU WIRE BLU/BRN WIRE BLU/GRY WIRE BLU/RED WIRE BRAKE LIGHT SWITCH BRN WIRE BRN/BLK WIRE BRN/GRN WIRE COMPUTER DATA LINES SYSTEM COOLING FANS SYSTEM DIGITAL MOTOR ELECTRONICS ELECTRICAL EXHAUST FLAP ENVIRONMENTAL AIR CATALYST SENSOR FUSE 146 GRN WIRE GRN/RED WIRE GRN/YEL WIRE GRY WIRE GRY/BLK WIRE GRY/BRN WIRE HOT W/ LEFT FOOTWELL) PETROL PARTICULATE FILTER EXHAUST GAS PRESSURE SENSOR PNK WIRE POWER DISTRIBUTION SYSTEM RADIATOR OUTLET TEMPERATURE SENSOR REAR FUSE CARRIER RED WIRE RELAY ENERGIZED RIGHT SIDE OF RADIATOR) VIO WIRE VIO/WHT WIRE WHT WIRE WHT/BLU WIRE WHT/GRN WIRE WHT/YEL WIRE YEL WIRE YEL/BRN WIRE YEL/GRN (OR GRN/YEL) WIRE YEL/GRN WIRE YEL/GRY WIRE