Mercedes·C300·2011 Mercedes C300·Wiring
Wiring diagram

2011 Mercedes C300 — power distribution

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Power distribution

2 1 2 1 1 2 1 2 1 2 2 1 1 2 2 1 2 1 1 2 1 2 1 2 1 2 1 1 2 1 A A 50A 60A 50A 100A 100A 150A 80A D B RSS AUS RSS EIN RES 40A 25A T 7.5A 100A C STOP FUNCTION STOP FUNCTION W/ ECO START/ W/O ECO START/ 100A 200A 60A 150A 100A F 50A 100A 150A 100A 100A E 400A 200A FRONT ELECTRICAL PREFUSE BOX ON-BOARD ELECTRICAL SYSTEM BATTERY REAR SAM CONTROL UNIT W/ FUSE & RELAY MODULE ALTERNATOR STARTER TERMINAL BLOCK (CIRCUIT 30) FRONT ELECTRICAL PREFUSE BOX 1 3 I3 2 MG1 MG2 B1 4 3 2 5 IG1 1 4 2 3 I4 I1 C9I 30G 49 35 47 50 C30 A 9 5 C12I C8D 2 12 C3I 4 3 C8D 10 C7I 2 E 2 1 IM1 MR7 MR4 MR3 MR4 MR3 MR5 MR9 MR2 MR1 MR6 1 2 I2 MR8 RED RED BLK BLK BLK RED RED RED RED RED RED RED RED/YEL RED/BLK RED/YEL BLK BRN RED BLK RED RED BLK BRN/GRN RED/BLU RED/GRY BRN/BLU RED (OR RED/WHT) BRN RED RED RED RED RED RED RED VIO/BLU WHT/GRN RED BLK QUIESCENT CURRENT CUTOUT RELAY FUSE 162 FUSE 161 156 FUSE 158 160 FUSE 159 161 FUSE 160 162 FUSE 163 158 FUSE 164 FUSE 46 FUSE 47 FUSE 64 FUSE 80 FUSE 61 FUSE 40 RES ADDITIONAL BATTERY RELAY FUSE 157 FUSE 155 FUSE 154 FUSE 156 FUSE 154 153 FUSE 151 FUSE 159 FUSE 152 FUSE 153 FUSE 150 (RIGHT REAR OF ENGINE COMPT) (LEFT SIDE OF TRUNK/CARGO AREA) (RIGHT SIDE OF CARGO AREA/ TRUNK) (RIGHT SIDE OF CARGO AREA/TRUNK) (AT RIGHT REAR OF ENGINE COMPT) (NOT USED) (NOT USED) (NOT USED) (W/ 2-ZONE THERMOTRONIC & 3-ZONE THERMOTRONIC) (NOT USED) (NOT USED) (NOT USED) (W/ RADIO), (W/ AUTOMATIC TAILGATE) (GLK-CLASS) (IF EQUIPPED) (W/ START STOP FUNCTION) (W/ START/STOP FUNCTION) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (GLK-CLASS) (C-CLASS) W7 W7 TO FUSE 150 (DIAGRAM 1 OF 5) BATTERY SENSOR A/C HOUSING TO FRONT SAM CONTROL UNIT W/ FUSE & RELAY MODULE (DIAGRAM 4 OF 5) TO CIRCUIT 15 RELAY (DIAGRAM 2 OF 5) TO FUSE 89 (DIAGRAM 2 OF 5) INTERIOR PROTECTION & TOW AWAY PROTECTION CONTROL UNIT REAR WINDOW ANTENNA FM ANTENNA AMPLIFIER TAILGATE CONTROL UNIT TO DC/AC CONVERTER CONTROL UNIT (DIAGRAM 3 OF 5) FM, AM & CL (ZV) ANTENNA AMPLIFIER FROM FUSE 158 (DIAGRAM 1 OF 5) ELECTROHYDRAULIC POWER STEERING COMBUSTION ENGINE & AIR CONDITIONING W/ INTEGRATED CONTROL FAN MOTOR TO FRONT SAM CONTROL UNIT W/ FUSE & RELAY MODULE (DIAGRAM 5 OF 5) TO FRONT SAM CONTROL UNIT W/ FUSE & RELAY MODULE (DIAGRAM 4 OF 5) SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT ELECTRONIC POWER STEERING CONTROL MODULE
G 30A 30A 15A 20A 20A B H S 15A 15A 5A G C 7.5A 7.5A 7.5A 7.5A 5A 15A 20A (OR 25A) 20A 7.5A (OR 5A) K 7.5A L REAR SAM CONTROL UNIT W/ FUSE & RELAY MODULE TAILGATE WINDSHIELD WIPER RELAY SEAT ADJUSTMENT RELAY REAR SAM CONTROL UNIT W/ FUSE & RELAY MODULE FUEL PUMP RELAY OVERHEAD CONTROL PANEL CONTROL UNIT OVERHEAD CONTROL PANEL ELECTRONICS C3I 10 8 C3I 1 C13A 2 1 5 3 7 C12I 6 C12I 4 6 C11T 7 3 6 5 C3I C15H C89 9 C3I 13 3 2 3 2 3 1 2 3 1 1 1 5 5 G X18/37 RED/WHT RED/GRY BLU/RED RED/GRN BLK/WHT RED/BLK RED/BLU RED/GRN RED/BLU RED/WHT RED/BLK RED/BLU BLK/YEL BLK/GRN YEL PNK/ RED/BLK RED/VIO RED/BLU RED/GRN PNK/ PNK/ YEL YEL YEL PNK/ BLU YEL GRY/ BLU PNK/ GRY/ GRY/BLU GRY/BLU GRY/BLU BLU GRY/ RED/GRN BRN NCA RED GRY NCA BRN BRN BRN BRN BRN BLU GRY/ NCA NCA FUSE 38 CIRCUIT 15 RELAY FUSE 39 FUSE 41 FUSE 58 FUSE 48 RES FUSE 57 FUSE 54 FUSE 56 FUSE 59 CIRCUIT 15R RELAY 1 FUSE 86 FUSE 87 FUSE 84 FUSE 89 FUSE 43 FUSE 60 FUSE 42 FUSE 37 FUSE 71 FUSE 83 FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FRONT VEHICLE INTERIOR POWER OUTLET VEHICLE INTERIOR POWER OUTLET (LEFT SIDE OF TRUNK/CARGO AREA) (LEFT SIDE OF TRUNK/CARGO AREA) (UNDER RIGHT FRONT SEAT) (NOT USED) (W/ TRAILER HITCH) (W/ TRAILER HITCH) (IF EQUIPPED), (W/ BLIND SPOT ASSIST SYSTEM) W/O SMOKER PACKAGE W/ SMOKER PACKAGE (W/ 3-ZONE THERMOTRONIC) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (W/ TRAILER HITCH) (IF EQUIPPED) (IF EQUIPPED), (IF EQUIPPED) & (IF EQUIPPED) (W/ SMOKER PACKAGE) TELE AID EMERGENCY CALL SYSTEM (W/O SMOKER PACKAGE) (W/ REAR SOCKET) (W/ CAN) (W/O CAN) W19 TO FUSE 42 (DIAGRAM 2 OF 5) FROM FUSE 61 (DIAGRAM 1 OF 5) RIGHT FRONT DOOR CONTROL UNIT LEFT REAR DOOR CONTROL UNIT TRAILER RECOGNITION CONTROL UNIT TRAILER SOCKET PARKING SYSTEM CONTROL UNIT LEFT FRONT BUMPER DISTRONIC SENSOR, RIGHT FRONT BUMPER DISTRONIC SENSOR, LEFT REAR BUMPER RADAR SENSOR, RIGHT REAR BUMPER RADAR SENSOR, LEFT REAR & RIGHT REAR BUMPER INTELLIGENT RADAR SENSOR FROM FUSE 41 (DIAGRAM 2 0F 5) FROM FUSE 46 (DIAGRAM 1 0F 5) TO FUSE 85 (DIAGRAM 3 0F 5) TO FUSE 74 (DIAGRAM 3 0F 5) REAR BLOWER MOTOR FUEL PUMP CONTROL UNIT DRIVER SEAT NECK-PRO HEAD RESTRAINT SOLENOID & FRONT PASSENGER SEAT NECK-PRO HEAD RESTRAINT SOLENOID EMERGENCY CALL SYSTEM CONTROL UNIT MULTICONTOUR SEAT PNEUMATIC PUMP ELECTRONIC TOLL COLLECTION CONTROL UNIT TRAILER RECOGNITION CONTROL UNIT DVD PLAYER LEFT REAR DISPLAY & RIGHT REAR DISPLAY EMERGENCY CALL SYSTEM CONTROL UNIT TO FRONT SAM CONTROL W/ FUSE & RELAY MODULE (DIAGRAM 4 OF 5) SATELLITE DIGITAL AUDIO RADIO (SDAR) CONTROL UNIT SDAR CONTROL UNIT/ HIGH DEFINITION TUNER BACKUP CAMERA VOLTAGE SUPPLY MODULE DIGITAL AUDIO BROADCASTING CONTROL UNIT FROM FUSE 76 (DIAGRAM 3 0F 5)
J R 30A 15A 15A L 50A 50A 20A 30A 40A 7.5A 5A 7.5A (OR 7.5A) 7.5A 5A 5A 15A H S T 30G 115V AC1 31 INVERTER 115V AC2 J R 30A 15A 7.5A 20A 5A REAR SAM CONTROL UNIT W/ FUSE & RELAY MODULE REAR SAM CONTROL UNIT W/ FUSE & RELAY MODULE HEATED REAR WINDOW RELAY 7 1 C15H 2 C66 C15H C14I 3 6 C13A 4 1 2 1 3 3 6 C11R C2G 2 1 1 C90 C14I 2 C88 C12I 3 7 6 4 5 1 2 C11T 1 5 1 2 4 2 3 5 5 6 6 7 3 7 4 8 8 1 4 1 C11R 2 C15H 7 3 4 RED/GRN (OR RED/GRN) RED/BLU PNK/GRN BRN PNK/GRN PNK/GRN (OR RED/GRN) PNK PNK/GRN ORG/BLU ORG/BLK RED/WHT RED/VIO RED/GRN RED/ORG RED RED/BLU RED/WHT PNK/BLK (OR GRY/WHT) RED/BRN RED/GRN PNK/BLU RED/BLK ORG/BLU PNK BRN ORG/BLK RED/GRN RED/BLU RED/YEL RED/GRN RED/YEL RED/GRN CIRCUIT 15R RELAY 2 FUSE 67 FUSE 52 RES FUSE 82 FUSE 79 RES FUSE 85 FUSE 77 FUSE 74 FUSE 81 FUSE 78 FUSE 80 FUSE 66 RES FUSE 68 RES FUSE 76 FUSE 72 LOAD COMPARTMENT SOCKET SOCKET MICRO- SWITCH 115V SOCKET DC/AC CONVERTER CONTROL UNIT FUSE 49 FUSE 51 FUSE 90 RES FUSE 50 FUSE 91 RES FUSE 75 FUSE 65 FUSE 88 RES FUSE 73 FUSE 63 FUSE 92 RES FUSE 62 FUSE 69 FUSE 70 (LEFT SIDE OF TRUNK/CARGO AREA) (GLK-CLASS: LEFT REAR CARGO PANEL) (GLK-CLASS: RIGHT SIDE OF CARGO AREA) (RIGHT SIDE OF TRUNK) (LEFT SIDE OF TRUNK/CARGO AREA) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (W/ AUXILIARY JACK) (IF EQUIPPED) (IF EQUIPPED) (GLK-CLASS) (W/ MOBILE PHONE PREINSTALLATION W/ UNIVERSAL INTERFACE & W/ STATIONARY HEATER) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) GLK-CLASS C-CLASS (C-CLASS) (GLK-CLASS) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (W/ SOUND SYSTEM) (GLK-CLASS) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) W6/1 W7/1 W7/2 TO FUSE 70 (DIAGRAM 3 OF 5) TO FUSE 73 (DIAGRAM 3 OF 5) FROM FUSE 60 (DIAGRAM 2 OF 5) FROM FUSE 87 (DIAGRAM 2 OF 5) LEFT FRONT SEAT VENTILATION BLOWER REGULATOR SOUND SYSTEM AMPLIFIER CONTROL UNIT TV DIGITAL TUNER MEDIA INTERFACE CONTROL UNIT & RIGHT FRONT SEAT VENTILATION BLOWER REGULATOR TO VEHICLE INTERIOR POWER OUTLET (DAIGRAM 2 OF 5) KEYLESS GO CONTROL UNIT VIDEO & RADAR SENSOR SYSTEM CONTROL UNIT WEIGHT SENSING SYSTEM (WSS) CONTROL UNIT COMPENSATOR/CELLULAR TELEPHONE SYSTEM UMTS TV DIGITAL TUNER FROM REAR SAM CONTROL UNIT W/ FUSE & RELAY MODULE (DIAGRAM 1 OF 5) FROM FUSE 67 (DIAGRAM 3 0F 5) FROM FUSE 74 (DIAGRAM 3 0F 5) DIAGNOSTIC CONNECTOR REAR BASS SPEAKER AMPLIFIER TIRE PRESSURE MONITOR CONTROL UNIT RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR FRONT PASSENGER SEAT CONTROL UNIT ADAPTIVE DAMPING SYSTEM CONTROL UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR STATIONARY HEATER UNIT DRIVER SEAT CONTROL UNIT STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER
M N 15A V U 7.5A 10A 10A 15A 7.5A 30A 15A 0 15A 15A 20A K E D N 15A 7.5A P Q 40A 5A 7.5A 7.5A 7.5A M O 30A 7.5A FRONT SAM CONTROL UNIT W/ FUSE & RELAY MODULE FANFARE HORN RELAY FRONT SAM CONTROL UNIT W/ FUSE & RELAY MODULE STARTER CIRCUIT 50 RELAY SECONDARY AIR INJECTION RELAY FRONT SAM CONTROL UNIT W/ FUSE & RELAY MODULE C15M C14M 3 C1M C11C 2 6 C10T 9 13 C7I C1M 4 5 13 1 4 X18-C2 1 2 13 C19I 4 6 C16S C11C 14 C8S C11C 10 C4I 12 6 C3M C3M 7 2 C4I C2I 5 C3M C4I C2I 6 3 3 C4I 6 C3M 7 C14M 2 C6I 4 C2I 5 C9G 10 7 6 8 C2I C5C 3 5 4 8 C5C 1 C13D 1 C5C BLK/BLU NCA BLU PNK/ RED BRN PNK/BLU BLK/BLU PNK/BLU PNK/BLK PNK/YEL RED RED/ WHT) (OR RED GRY/BLU PNK/WHT RED/BLU RED/BLU RED/BLK RED/BLU BLK/RED RED/VIO BLK/RED BRN/ORG RED/BLU RED/YEL RED/VIO RED/BLU RED/BLU RED RED/GRN BLU/RED RED/BLU RED/BRN RED/BLU FUSE 31B CIRCUIT 15R RELAY CIRCUIT 15 RELAY BACKUP RELAY FUSE 18 FUSE 31A FUSE 8 FUSE 21 FUSE 9 FUSE 10 FUSE 29 FUSE 30 GLOVE BOX SOCKET ENGINE CIRCUIT 87 RELAY FUSE 24 FUSE 22 FUSE 23 FUSE 25 FUSE 32 FUSE 16 FUSE 11 FUSE 13 FUSE 15 FUSE 17 FUSE 12 (LEFT REAR OF ENGINE COMPT) (LEFT FRONT FOOTWELL) (LEFT REAR OF ENGINE COMPT) (LEFT REAR OF ENGINE COMPT) (NOT USED) (NOT USED) (NOT USED) (EARLY PRODUCTION) (IF EQUIPPED) (IF EQUIPPED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (USA W/ SULEV), (USA) & (USA) (NOT USED) (NOT USED) (NOT USED) (W/O NAVIGATION) (IF EQUIPPED) (IF EQUIPPED) (W/ 2-ZONE THERMATIC & 3-ZONE THERMOTRONIC) (IF EQUIPPED) (A/T) (IF EQUIPPED) W15/5 TO FUSE 15 (DIAGRAM 4 0F 5) TO ENGINE CIRCUIT 87 RELAY (DIAGRAM 4 0F 5) TO FUSE 6 (DIAGRAM 5 0F 5) FROM CHASSIS CIRCUIT 87 RELAY (DIAGRAM 5 0F 5) STOP LAMP SWITCH WIPER MOTOR FROM FRONT ELECTRICAL PREFUSE BOX (DIAGRAM 1 OF 5) GLOVE BOX LAMP SWITCH LEFT FRONT HEADLAMP UNIT RIGHT FRONT HEADLAMP UNIT FROM FRONT CIGARETTE LIGHTER (DIAGRAM 2 OF 5) FRONT PASSENGER SEAT OCCUPIED RECOGNITION & ACSR SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT WIPER PARK HEATER FROM FUSE 152 (DIAGRAM 1 OF 5) FROM FUSE 31B (DIAGRAM 4 0F 5) TO SECONDARY AIR INJECTION RELAY (DIAGRAM 4 0F 5) ME-SFI (ME) CONTROL UNIT RADIATOR SENSOR FOR ENGINE DIAGNOSIS LEFT INTAKE CAMSHAFT HALL SENSOR, LEFT EXHAUST CAMSHAFT HALL SENSOR, CYLINDER 4 IGNITION COIL, CYLINDER 5 IGNITION COIL, CYLINDER 6 IGNITION COIL, RADIO INTERFERENCE SUPPRESSION CAPACITOR 2, CYLINDER 4 INJECTION VALVE, CYLINDER 5 INJECTION VALVE, CYLINDER 6 INJECTION VALVE, LEFT INTAKE CAMSHAFT SOLENOID & LEFT EXHAUST CAMSHAFT SOLENOID CYLINDER 1 IGNITION COIL, CYLINDER 2 IGNITION COIL, CYLINDER 3 IGNITION COIL, RADIO INTERFERENCE SUPPRESSION CAPACITOR 1, RIGHT INTAKE CAMSHAFT HALL SENSOR, RIGHT EXHAUST CAMSHAFT HALL SENSOR, RIGHT INTAKE CAMSHAFT SOLENOID, RIGHT EXHAUST CAMSHAFT SOLENOID, CYLINDER 1 INJECTION VALVE, CYLINDER 2 INJECTION VALVE, CYLINDER 3 INJECTION VALVE & HOT FILM MASS AIR FLOW SENSOR COOLANT THERMOSTAT, INTAKE MANIFOLD TUMBLE FLAP SWITCHOVER VALVE, INTAKE MANIFOLD SWITCHOVER VALVE, AIR PUMP SWITCHOVER VALVE, HEATING SYSTEM SHUTOFF VALVE, LEFT OXYGEN SENSOR DOWN STREAM OF CATALYTIC CONVERTER, RIGHT OXYGEN SENSOR DOWN STREAM OF CATALYTIC CONVERTER, LEFT OXYGEN SENSOR UP STREAM OF CATALYTIC CONVERTER & RIGHT OXYGEN SENSOR UP STREAM OF CATALYTIC CONVERTER COMBUSTION ENGINE & AIR CONDITIONING W/ INTEGRATED CONTROL FAN MOTOR ME-SFI (ME) CONTROL UNIT PURGE CONTROL VALVE ACTIVATED CHARCOAL FILTER SHUTOFF VALVE FROM FUSE 18 (DIAGRAM 4 0F 5) FROM ENGINE CIRCUIT 87 RELAY (DIAGRAM 4 0F 5) TO FUSE 14 (DIAGRAM 5 0F 5) TO FUSE 1 (DIAGRAM 5 0F 5) AUDIO/ COMAND CONTROL PANEL STEERING COLUMN MODULE CONTROL UNIT AUDIO/ COMAND CONTROL PANEL MOBILE PHONE ELECTRICAL CONNECTOR AUTOMATIC AIR CONDITIONING CONTROL & OPERATING UNIT OVERHEAD CONTROL PANEL CONTROL UNIT ELECTRONIC SELECTOR LEVEL MODULE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT UPPER CONTROL PANEL CONTROL UNIT & NAVIGATION MODULE PANORAMIC SLIDING ROOF CONTROL MODULE
2 2 1 1 V P Q 20A 7.5A 10A 5A 7.5A 20A 7.5A 30A 30A 7.5A 25A 40A F U 7.5A 7.5A 20A 10A (OR 20A) 30 DATA 30Z 31 30Z DATA UB 30 CAN-B L CAN-B H CAN-E H CAN-E L FRONT SAM CONTROL UNIT W/ FUSE & RELAY MODULE FRONT SAM CONTROL UNIT W/ FUSE & RELAY MODULE STARTER CIRCUIT 50 RELAY REAR SAM CONTROL UNIT W/ FUSE & RELAY MODULE ELECTRIC STEERING LOCK CONTROL UNIT C10T 10 5 C9G 2 C9G 1 5C 9 2I C5C 7 C4I 10 4 8 C11C C15M 1 2 C7I 4 3 1 C2I 7 9 C12S 11 6 C7I C11C 2 C6I 5 3 18 C9I 2 10 9 8 7 6 5 4 3 2 1 2 1 A C B 1 2 4 3 3 1 2 6 7 5 4 8 RED/GRY RED PNK/WHT PNK RED/BLK BRN RED RED RED RED/WHT RED/YEL RED/WHT RED RED/GRY RED/BRN RED/GRN RED/GRN RED/GRN PNK/RED PNK/RED PNK/RED PNK/WHT RED/GRN RED/GRN WHT/RED RED BRN BRN RED GRN RED GRN/WHT BRN/RED WHT/RED RED/GRN BRN RED/GRN CHASSIS CIRCUIT 87 RELAY FUSE 1 FUSE 14 FUSE 3 FUSE 2 FUSE 20 FUSE 26 FUSE 19 FUSE 28 FUSE 27 FUSE 35 FUSE 33 FUSE 34 FUSE 4 FUSE 5 FUSE 7 FUSE 6 AUTOMATIC TRANSMISSION NEUTRAL POSITION SWITCH ELECTRONIC IGNITION SWITCH CONTROL UNIT (LEFT REAR OF ENGINE COMPT) (LEFT REAR OF ENGINE COMPT) (LEFT SIDE OF TRUNK/CARGO AREA) (LEFT FRONT FOOTWELL) (TOP OF STEERING COLUMN) (NOT USED) (NOT USED) (W/ AUDIO 20), (W/ AUDIO 50) (LATE PRODUCTION) W/ KEYLESS GO W/O KEYLESS GO (NOT USED) C-CLASS W/ KEYLESS GO W/O KEYLESS GO W16/3 W15/5 FROM FUSE 16 (DIAGRAM 4 OF 5) TO FUSE 29 (DIAGRAM 4 OF 5) FROM FUSE 32 (DIAGRAM 4 OF 5) RADIO RADIO W/ AUTO PILOT SYSTEM INSTRUMENT CLUSTER ME-SFI (ME) CONTROL UNIT LEFT FRONT DOOR CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT FROM FRONT ELECTRICAL PREFUSE BOX (DIAGRAM 1 OF 5) & COMAND CONTROL UNIT FUEL PUMP CONTROL UNIT FULLY INTEGRATED TRANSMISSION CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT RIGHT REAR DOOR CONTROL UNIT FROM FUSE 29 (DIAGRAM 4 OF 5) HEADLAMP CONTROL UNIT ME-SFI (ME) CONTROL UNIT EXTERIOR LIGHTS SWITCH COMPUTER DATA LINES SYSTEM