Mercedes·Cla250·2020 Mercedes CLA250·Wiring
Wiring diagram

2020 Mercedes CLA250 — power distribution

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Power distribution

A 5A D 7.5A 20A 5A 7.5A (OR 20A) (OR 25A) 20A 10A 30A 30A 30A (OR 5A) 10A 125A 80A C (OR 250A) 30A B 300A 200A FAN MOTOR ON-BOARD ELECTRICAL SYSTEM BATTERY ELECTRICAL POWER STEERING CONTROL UNIT ALTERNATOR CENTRAL CONTROL MODULE VOLTAGE DIP LIMITER ENGINE COMPARTMENT FUSE & RELAY MODULE DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL ELECTROHYDRAULIC SHORT & LONG-RANGE RADAR SENSOR ME-SFI (ME) CONTROL UNIT FINE PARTICLE SENSOR STATIONARY HEATER UNIT DRIVETRAIN CONTROL UNIT WIPER MOTOR FINE PARTICLE SENSOR CENTRAL CONTROL MODULE RIGHT FRONT LAMP UNIT LEFT FRONT LAMP UNIT RIGHT FRONT LAMP UNIT M3E 3 M2E 2 1 14 X26/38X1 2 7 7 9 9 6 3 2 C1 1 1 5 5 4 2 C MR2 26 25 5 7 1 3 6 16 F E1 M3B A1 A8 A5 C1 2 A3 A6 A2 MR2 34 35 4 1 2 3 A3 A4 A1 RED/VIO RED/VIO RED RED RED/GRN RED/GRN RED/BLU RED/BLU RED/BLU RED/BLU RED/BLU RED/BLU RED/YEL RED/BLU RED/VIO RED/VIO RED RED RED RED/BLK RED/BLK RED/BLU RED/YEL RED/BLK RED/BLK RED RED RED RED RED RED RED NCA NCA NCA RED GRN BLK BRN BLK GRN BLU RED RED/YEL RED RED NCA NCA STARTER BATTERY PREFUSE BOX ENGINE COMPARTMENT PREFUSE BOX FUSE 14 FUSE 12 BATTERY DISCONNECT SWITCH RELAY FUSE 2 FUSE 3 FUSE 1 STARTER & ALTERNATOR CABLE CONNECTOR FUSE 42 FUSE 118 FUSE 43 FUSE 40 FUSE 49 FUSE 44 FUSE 53 FUSE 41 FUSE 52 FUSE 47 FUSE 48 W/ STATIC LED HEADLAMPS W/ DYNAMIC LED HEADLAMPS (IF EQUIPPED) (LEFT REAR OF ENGINE COMPT) (LEFT SIDE OF ENGINE COMPT) (LEFT REAR OF ENGINE COMPT) (LEFT SIDE OF ENGINE COMPT) W3/2 TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 4 OF 7) FROM ELECTRONIC IGNITION SWITCH CONTROL UNIT (DIAGRAM 7 OF 7) TO VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 4 OF 7) TO BACKUP RELAY (DIAGRAM 2 OF 7)
(+) 30T 20A 40A 60A 30A 30T E 15 5A 5A N/A 15 30T (-) (+) 30T 87M (-) (+) D 5A 5A 5A 7.5A 5A N/A N/A ENGINE COMPARTMENT FUSE & RELAY MODULE CIRCUIT 87M RELAY TERMINAL 87C RELAY CENTRAL CONTROL MODULE DRIVETRAIN CONTROL UNIT ELECTRONIC STABILITY PROGRAM CONTROL UNIT CENTRAL CONTROL MODULE RIGHT FRONT LAMP UNIT LEFT FRONT LAMP UNIT LEFT FRONT LAMP UNIT CIRCUIT 50 RELAY ACTIVE BRAKE ASSIST CONTROLLER UNIT ACTIVE DISTANCE ASSIST DISTRONIC ELECTRIC CONTROLLER UNIT CENTRAL CONTROL MODULE ELECTRONIC STABILITY PROGRAM CONTROL UNIT ME-SFI (ME) CONTROL UNIT DRIVETRAIN CONTROL UNIT DRIVE UNIT CONTROL UNIT SHORT & LONG-RANGE RADAR SENSOR LEFT FRONT LAMP UNIT RIGHT FRONT LAMP UNIT 1 1 9 7 9 G2 1 1 1 30 G5 G6 1 MR1 35 G1 9 9 4 M4E 5 15 X26/38X1 F MR2 B 20 X25/14X2 1 18 C G3 1 G4 1 MR2 31 M2D 1 B 25 2 1 M5I 5 2 M4D 1 3 4 6 2 6 28 15 18 A 8 36 BLK/RED BLK/RED RED/YEL RED/BLU RED/YEL RED/BLU RED/YEL RED/BLU RED/BLU RED/BLK RED/BLK RED/BLU RED RED BLK/WHT BLK/WHT BLK/WHT RED/BLK RED/BLU RED/BLU BLK BLK/ORG BLK/RED BLK/RED RED/BLU BLK/RED RED/PNK RED/PNK RED/VIO RED/VIO BRN RED/VIO BLK/ORG BLK BLK/RED RED/BLK BLK/RED ENGINE COMPARTMENT TERMINAL 15 RELAY BACKUP RELAY FUSE 21 FUSE 24 FUSE 22 FUSE 23 FUSE 25 FUSE 66 FUSE 64 FUSE 71 FUSE 62 FUSE 69 FUSE 68 FUSE 72 FUSE 70 FUSE 67 (NOT USED) (NOT USED) W/ STATIC LED HEADLAMPS W/ DYNAMIC LED HEADLAMPS (NOT USED) (NOT USED) W/O ADAPTIVE CRUISE CONTROL PLUS (DISTRONIC PLUS) W/ ADAPTIVE CRUISE CONTROL PLUS (DISTRONIC PLUS) (W/ ACTIVE BRAKE ASSIST) (W/ ACTIVE DISTANCE ASSIST DISTRONIC) (LEFT SIDE OF ENGINE COMPT) (LEFT REAR OF ENGINE COMPT) W3/2 FROM FUSE 48 (DIAGRAM 1 OF 7) TO FUSE 33 (DIAGRAM 6 OF 7)
5A K 10A 10A 7.5A 5A 5A 30A 10A N/A 30A 30A 10A 25A 30A N/A 30A 30A 25A N/A J VEHICLE INTERIOR FUSE & RELAY MODULE FUEL PUMP CONTROL UNIT HEAD UNIT FRONT PASSENGER DOOR CONTROL UNIT DRIVER DOOR CONTROL UNIT CENTRAL CONTROL MODULE LEFT REAR DOOR CONTROL UNIT HEAD UNIT/ INSTRUMENT CLUSTER CONTROL UNIT CENTRAL CONTROL MODULE RIGHT REAR DOOR CONTROL UNIT MONO MULTI-FUNCTION CAMERA STEREO MULTI-FUNCTION CAMERA FRONT CENTER CONSOLE USB CONNECTOR STATIONARY HEATER RADIO REMOTE CONTROL RECEIVER RAIN/LIGHT SENSOR W/ ADDITIONAL FUNCTIONS PARKING SYSTEM CONTROL UNIT FRONT CENTER CONSOLE USB CONNECTOR MULTIMEDIA CONNECTION UNIT HAND MOTION SENSOR TIRE PRESSURE MONITOR CONTROL UNIT REAR SWITCHING MODULE BACKUP CAMERA CONTROL UNIT C1 3 1 C1 2 X1 32 6 6 6 5 5 3 4 4 1 3 2 X26/40X1 1 M4E 2 1 7 M3E RBA2 37 6 C3 C3 4 5 1 3 X35/2X1 19 X35/3X1 3 3 2 C1 9 1 7 RBA1 37 M3F 6 5 1 C3 3 X35/1X1 19 X35/4X1 C3 3 3 C1 14 1 C1 1 M4D 5 RED/ORG RED/ORG RED/WHT RED/GRY RED/GRY RED/WHT RED/WHT NCA RED/WHT RED/WHT RED RED RED RED RED RED RED/WHT RED/WHT RED/BLK RED/BLK RED/GRY RED/GRY RED/VIO RED/VIO RED/VIO RED/VIO RED/VIO RED/ORG RED/ORG RED RED RED/GRN RED/BLU RED/WHT RED RED RED RED RED/GRN RED/GRN RED/BLU RED/BLU RED/GRY RED/GRY RED/GRY FUSE 160 FUSE 157 FUSE 163 FUSE 162 FUSE 164 FUSE 161 FUSE 159 FUSE 165 FUSE 156 FUSE 152 FUSE 158 FUSE 150 FUSE 154 FUSE 168 FUSE 166 FUSE 170 FUSE 169 FUSE 167 FUSE 171 (NOT USED) (NOT USED) (NOT USED) (NOT USED) W/O CONNECT 5 (NTG6) W/ CONNECT 5 (NTG6) W/ TIRE PRESSURE MONITOR W/O WIRELESS MOBILE PHONE CHARGING W/ WIRELESS MOBILE PHONE CHARGING W/O TIRE PRESSURE MONITOR W/O ACTIVE PARKING ASSIST W/ PARKTRONIC W/O ACTIVE PARKING ASSIST & PARKTRONIC (W/O DISTRONIC DISTANCE-PILOT) (W/ DISTRONIC DISTANCE-PILOT) (W/ CONNECT 5 (NTGC)) (W/O CONNECT 5 (NTGC)) (RIGHT FRONT FOOTWELL) FROM FUSE 149 (DIAGRAM 5 OF 7) TO ELECTRIC STEERING LOCK CONTROL UNIT (DIAGRAM 7 OF 7)
1 2 1 2 A H 30A 5A 5A 10A 15A 7.5A 7.5A (OR 40A) 30A 40A MPAC U MPAC V SENS GND SENS 31 15 30T 10A N/A W/ SMOKER'S PACKAGE W/O SMOKER'S PACKAGE 20A 20A (+) 30T 15 (-) 30T 100A G C N/A 10A 5A N/A F 7.5A VEHICLE INTERIOR FUSE & RELAY MODULE HEATED REAR WINDOW RELAY FM, AM, CL, DAB & KEYLESS-GO ANTENNA AMPLIFIER CENTRAL CONTROL MODULE ALARM SIREN DIAGNOSTIC CONNECTOR INSTRUMENT CLUSTER CONTROL UNIT SOUND SYSTEM AMPLIFIER CONTROL UNIT HERMES CONTROL UNIT MERCEDES-BENZ INTELLIGENT DRIVE CONTROL UNIT SUPPLEMENTAL RESTRAINT SYSTEM CONTROL UNIT STEERING COLUMN MODULE CONTROL UNIT AC HOUSING M3D 3 1 6 27 C1 5 16 3 C1 4 4 C1 12 2 104 C1 1 M4C 1 C1 G2 1 3 C1 G1 1 1 2 3 4 C2 3 4 C1 1 2 3 4 5 1 2 6 4 M2C 1 2 3 3 2 1 5 M2C 1 2 3 3 49 RBA1 1 2 A3 A1 6 28 X25/14X2 4 1 C2 2 2 5 M4B 1 1 P1 RED/GRY RED/YEL RED/YEL RED/BRN RED/BRN RED RED RED/ORG RED/ORG RED RED RED/BLU RED/BLU RED RED RED/BLU RED/BLU BRN ORG/RED ORG/BLU BLK YEL YEL BLK ORG/BLU BRN ORG/RED RED/GRY RED RED GRY BRN BRN BRN BRN RED/YEL RED/YEL BRN RED/YEL BRN RED/PNK RED/PNK BLU/YEL BLU/YEL BRN RED RED/YEL RED RED/BLU RED RED/BLU RED/YEL RED VEHICLE INTERIOR CIRCUIT 15R RELAY FUSE 132 FUSE 129 FUSE 101 FUSE 128 FUSE 127 FUSE 131 FUSE 124 FUSE 126 FRONT VEHICLE INTERIOR POWER OUTLET LUGGAGE COMPARTMENT SOCKET FRONT CIGARETTE LIGHTER W/ ASHTRAY ILLUMINATION FUSE 123 FUSE 107 FUSE 110 FUSE 104 FUSE 125 FUSE 108 FUSE 117 FUSE 111 FUSE 109 FUSE 112 FUSE 103 230V SOCKET 230V SOCKET DC/AC CONVERTER CONTROL UNIT (NOT USED) (NOT USED) (W/ INTERIOR MONITORING) (NOT USED) (IF EQUIPPED) (IF EQUIPPED) (IF EQUIPPED) (W/O BLIND SPOT ASSIST) (RIGHT FRONT FOOTWELL) (RIGHT FRONT FOOTWELL) (LEFT SIDE OF LUGGAGE COMPT) (LEFT SIDE OF LUGGAGE COMPT) (RIGHT SIDE OF LUGGAGE COMPT) (CENTER OF LUGGAGE COMPT) W15/7 W6 W12/1 W6 W7 INTERIOR LIGHTS SYSTEM FROM STARTER BATTERY PREFUSE BOX (DIAGRAM 1 OF 7) FROM STARTER BATTERY PREFUSE BOX (DIAGRAM 1 OF 7) TO ELECTRONIC IGNITION SWITCH CONTROL UNIT (DIAGRAM 7 OF 7) TO REAR FUSE & RELAY MODULE (DIAGRAM 6 OF 7) TO FUSE 119 (DIAGRAM 5 OF 7)
2 1 1 2 J 10A N/A N/A N/A 30A 30A 20A 30A H 7.5A N/A 30A 30A 15A W/O MULTICONTOUR SEATS W/ MULTICONTOUR SEATS 10A 7.5A 7.5A 15A 7.5A 5A 5A 10A VEHICLE INTERIOR FUSE & RELAY MODULE RIGHT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR FRONT PASSENGER MULTICONTOUR SEAT CONTROL UNIT PANORAMIC SLIDING ROOF CONTROL UNIT ALL-WHEEL DRIVE CONTROL UNIT LEFT FRONT REVERSIBLE EMERGENCY TENSIONING RETRACTOR DRIVER SEAT CONTROL UNIT DRIVER MULTICONTOUR SEAT CONTROL UNIT ADAPTIVE DAMPING SYSTEM CONTROL UNIT FRONT PASSENGER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT DRIVER SEAT LUMBAR SUPPORT ADJUSTMENT CONTROL UNIT CELLULAR TELEPHONE SYSTEM ANTENNA AMPLIFIER/ COMPENSATOR AUGMENTED REALITY CAMERA CLIMATE CONTROL OPERATING UNIT FRONT SEAT HEATER/ SEAT VENTILATION CONTROL UNIT TOUCHPAD OVERHEAD CONTROL PANEL CONTROL UNIT HEAD UNIT/ INSTRUMENT CLUSTER DISPLAY CLUSTER PYROFUSE FRONT PASSENGER SEAT CONTROL UNIT FRONT MOBILE PHONE CRADLE CONTROL UNIT AMBIANCE ILLUMINATION CONTROL UNIT DRIVE UNIT CONTROL UNIT HEAD-UP DISPLAY C 2 C1 5 M4D 1 C3 5 C2 1 10 C1 7 3 3 C1 3 C1 8 2 M3B 4 M3B 15 1 X1 1 2 7 M3D 3 3 X28/30X2 X28/29X2 1 1 3 X28/30X2 8 3 X28/29X2 8 4 6 4 2 1 5 C1 47 2 C2 1 2 3 4 6 1 3 4 10 8 9 9 C1 X1 2 2 M4A RED/WHT RED/WHT NCA RED RED RED RED RED RED/GRN RED RED RED RED/GRN RED/GRN RED/GRN RED RED/BLK RED/BLK NCA RED RED RED RED RED RED RED RED RED RED/BLK RED/BLK RED/VIO RED RED/VIO RED RED RED/YEL RED/GRN RED RED/GRN RED/WHT RED/BLK RED/GRY RED/YEL RED/GRN RED/GRN RED/WHT RED/BLK RED/GRY FUSE 115 FUSE 116 FUSE 119 FUSE 114 FUSE 113 FUSE 136 FUSE 139 FUSE 118 FUSE 138 FUSE 137 FUSE 141 FUSE 133 FUSE 146 FUSE 140 FUSE 143 FUSE 148 FUSE 147 FUSE 149 FUSE 144 FUSE 142 FUSE 145 (NOT USED) (NOT USED) (NOT USED) W/ WIRELESS MOBILE PHONE CHARGING W/O WIRELESS MOBILE PHONE CHARGING W/ HEAD-UP DISPLAY W/O HEAD-UP DISPLAY W/O MEMORY W/ MEMORY (IF EQUIPPED) (W/ POWER VARIANT UPRATED 2) (RIGHT FRONT FOOTWELL) FROM FUSE 117 (DIAGRAM 4 OF 7) TO FUSE 150 (DIAGRAM 3 OF 7)
(OR 40A) N/A N/A N/A N/A 5A 30A G 30T (+) (-) 87 20A 30A 30A 40A N/A 25A 20A N/A N/A N/A 7.5A 5A N/A N/A N/A N/A N/A N/A 30T 87M (-) (+) E TRUNK LID/ LIFTGATE CONTROL CONTROL UNIT TRAILER RECOGNITION CONTROL UNIT ENGINE COMPARTMENT FUSE & RELAY MODULE 48 V ON-BOARD ELECTRICAL SYSTEM DC/DC CONVERTER CONTROL UNIT BELT-DRIVEN STARTER ALTERNATOR C1 5 2 1 M3F 3 B 7 3 6 4 5 1 G2 11 G3 G4 G1 A1 M2C 4 6 2 1 3 4 5 6 1 1 1 1 7 1 M3F 2 3 4 5 6 4 3 5 M1E 1 2 RED/WHT RED/BLK RED/YEL RED/YEL RED/WHT RED RED/BLU RED/WHT RED RED/BLU RED/GRN RED/GRN RED/VIO RED/VIO RED REAR FUSE & RELAY MODULE FUSE 207 FUSE 209 FUSE 211 FUSE 204 FUSE 203 FUSE 208 FUSE 206 FUSE 210 FUSE 201 FUSE 205 FUSE 202 BACKUP RELAY FUSE 213 FUSE 214 FUSE 215 FUSE 212 BACKUP RELAY FUSE 33 FUSE 38 FUSE 37 FUSE 34 FUSE 36 FUSE 35 FUSE 39 FUSE 60 FUSE 58 (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (NOT USED) (LEFT SIDE OF LUGGAGE COMPARTMENT) (LEFT SIDE OF ENGINE COMPARTMENT) FROM VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 4 OF 7) FROM FUSE 22 (DIAGRAM 2 OF 7)
1 1 SIG KAPA KAPA KAPA LF 2 LF 1 GND GND GND LF 2 LF 1 AUTHORIZATION VIA MOBILE PHONE W/ VEHICLE ACCESS & DRIVE KAPA (+) GND K LF 1 LF 2 B 10A FLEX-E BP FLEX-E BM CAN-D H FLEX-E BM FLEX-E BP FLEX-E BP FLEX-E BM CAN-PER L CAN-D L 31 CAN-B L DCS (+) CAN-HMI L FLEX-E BP ILLU (+) (+) FLEX-E BM FLEX-E BP FLEX-E BM CAN-PER H CAN-HMI H SIG 1 CAN-B H P-NOT SIG 30 REL C HF 30B LF 1 LF 2 LF MID F DRIVER DOOR CONTROL UNIT DRIVETRAIN CONTROL UNIT CENTRAL CONTROL MODULE DUAL CLUTCH TRANSMISSION FULLY INTEGRATED TRANSMISSION CONTROL ELECTROHYDRAULIC CONTROLLER UNIT FM, AM, CL (ZV) & KEYLESS GO ANTENNA AMPLIFIER X25/14X2 25 3 2 X35/106X3 X35/4X1 14 14 X35/3X1 X35/2X2 4 15 X35/4X1 15 X35/3X1 5 X35/2X2 1 2 1 2 2 1 2 1 2 1 4 X35/1X2 6 X35/1X2 5 X35/1X2 2 1 3 X35/105X3 2 3 1 3 2 3 2 1 30 RBA3 31 X25/14X2 32 C1 9 X35/1X2 C3 4 27 X25/13X1 RBA1 5 18 E2 A2 1 2 3 5 6 7 8 9 10 11 12 13 14 16 17 18 15 20 19 21 25 24 23 22 27 28 26 31 30 32 29 4 34 35 36 39 37 38 1 C1 2 5 3 4 40 9 7 8 13 11 12 10 15 14 16 19 20 18 17 6 23 22 21 25 26 27 24 28 29 30 34 33 32 31 38 37 36 35 C2 39 40 C2 3 2 1 2 3 7 1 4 2 6 3 8 9 33 BLU GRY/ GRY/ BRN/ YEL/ YEL/ WHT BRN WHT WHT WHT BRN BRN BRN WHT WHT WHT BRN BRN BRN BRN WHT BRN WHT WHT BRN GRY/YEL BLK YEL BLK GRY/BLK BRN/BLK BLK WHT RED BRN/PNK WHT RED BRN/PNK WHT RED BRN/PNK RED WHT BRN/PNK YEL/GRN YEL/BRN BRN GRN GRN/BLU GRN/BLU ORG/BLU ORG/BLU ORG/BLU BRN BRN BLU/WHT WHT BLK/WHT ORG YEL/GRN BRN RED/WHT YEL/GRN YEL YEL RED/GRN BRN RED/BLU RED/BLU RED/BLU RED PNK PNK/GRN GRY/WHT PNK GRN PNK VIO GRN GRY BRN YEL ORG BRN WHT GRN BLK/WHT GRN PNK PNK GRN/WHT VIO/WHT GRN BRN/RED RED/GRN BLU/WHT RED/YEL BLU BLK/ORG RED/BLU BRN/GRY WHT GRY BLU WHT RED/GRN BLK/ORG BLU FRONT PASSENGER DOOR KEYLESS-GO DOOR HANDLE RIGHT REAR KEYLESS-GO DOOR HANDLE LEFT REAR KEYLESS-GO DOOR HANDLE ENGINE START/STOP BUTTON ELECTRIC STEERING LOCK CONTROL UNIT ADDITIONAL BATTERY FUSE ADDITIONAL BATTERY ELECTRONIC IGNITION SWITCH CONTROL UNIT LOAD COMPARTMENT KEYLESS-GO ANTENNA CENTER CONSOLE KEYLESS-GO ANTENNA LEFT UNDERFLOOR KEYLESS-GO ANTENNA RIGHT UNDERFLOOR KEYLESS-GO ANTENNA DRIVER DOOR KEYLESS-GO DOOR HANDLE (LEFT FRONT FOOTWELL) (RIGHT FRONT FOOTWELL) (LEFT FRONT FOOTWELL) (LEFT FRONT FOOTWELL) (UNDER FRONT OF CENTER CONSOLE) (UNDER CENTER OF LUGGAGE COMPT FLOOR) (LEFT FRONT DOOR SILL) (RIGHT FRONT DOOR SILL) W34 W15/5 W34 W15 W12/1 COMPUTER DATA LINES SYSTEM FROM VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 3 OF 7) COMPUTER DATA LINES SYSTEM FROM VEHICLE INTERIOR FUSE & RELAY MODULE (DIAGRAM 4 OF 7) TO STARTER BATTERY PREFUSE BOX (DIAGRAM 1 OF 7)