Assignment Of Engine Fuse And Relay Module - GF54.15-P-1256-32FR
Model 257, 290
Relays J, K, L, M and O are located inside the housing and firmly soldered onto the PCB.
| Slot | Fuse Identification | Circuit | Wire Identification | Fused component | Fuse rating (A) |
|---|---|---|---|---|---|
| 100 | Electrical fuse 100 (K40/8f100) | - | - | Spare | |
| 101 | Electrical fuse 101 (K40/8f101) | 87M | 1.5 RDGN | Engine 256: Circuit 87M end sleeve (Z7/48z1) |
15 |
| Engine 264: Fuel tank diagnostic module (A101) |
|||||
| Engine 654, 656: CDI control unit (N3/9) |
|||||
| 102 | Electrical fuse 102 (K40/8f102) | 87M | 2.5 RDBU | Engine 654, 656: CDI control unit (N3/9) |
20 |
| Engine 177, 256: ME-SFI [ME] control unit (N3/10) | |||||
| 4.0 RDBU | Engine 264: ME-SFI [ME] control unit (N3/10) |
||||
| 103 | Electrical fuse 103 (K40/8f103) | 87M | 1.5 RDYE | Engine 654, 656: CDI control unit (N3/9) |
15 |
| Engine 264: ME-SFI [ME] control unit (N3/10) |
|||||
| Model 257 with code U79 (BlueTEC (SCR) diesel exhaust gas cleaning, Generation 3): NOx sensor control unit downstream of SCR catalytic converter (N37/8) NOx sensor control unit upstream of diesel oxidation catalytic converter (N37/12) |
|||||
| 2.5 RDYE | Engine 177: Fuel tank diagnostic module (A101) Oil sensor (oil level, temperature and quality) (B40) |
||||
| Engine 177: Coolant thermostat heating element (R48) Left thrust circulating air switchover valve (Y101/1) Right thrust circulating air switchover valve (Y101/2) Engine oil pump valve (Y130) |
|||||
| 4.0 RDYE | Engine 256: ME-SFI [ME] control unit (N3/10) |
||||
| 104 | Electrical fuse 104 (K40/8f104) | 87M | 1.5 RDBK | Engine 654, 656: CDI control unit (N3/9) Circuit 87M end sleeve (Z7/75z1) |
15 |
| 4.0 RDBK | Engine 177: Ignition coil, cylinders 5+6 (T4/2) Ignition coil, cylinders 7+8 (T4/3) Left intake camshaft solenoid (Y49/4) Left exhaust camshaft solenoid (Y49/6) |
||||
| Engine 256: ME-SFI [ME] control unit (N3/10) |
|||||
| Engine 264: Potential distributor 2 power supply (X30/90) |
|||||
| 105...109 | Electrical fuse 105 (K40/8f105) - Electrical fuse 109 (K40/8f109) | Spare | |||
| 110 | Electrical fuse 110 (K40/8f110) | 30t | 1.5 PKRD | Model 257 with code 631 (LED static headlamp, left-hand traffic) or code 632 (LED static headlamp, right-hand traffic): Right front lamp unit (E2) |
20 |
| 1.5 GNRD | With CODE 640 (High Performance LED) or CODE 641 (Dynamic left-hand traffic LED headlamp) or CODE 642 (Dynamic right-hand traffic LED headlamp)): Left front lamp unit (E1) Right front lamp unit (E2) |
||||
| 111 | Electrical fuse 111 (K40/8f111) | 30t | 2.5 RDBK | Wiper motor (M6/1) | 30 |
| 112 | Electrical fuse 112 (K40/8f112) | - | - | Spare | - |
| 113 | Electrical fuse 113 (K40/8f113) | 50 | 2.5 VTWH | Except code B01 (48V technology): Starter (M1) |
30 |
| 114 | Electrical fuse 114 (K40/8f114) | 87 | 4.0 RDWH | Model 257 with code 489 (AIR BODY CONTROL): AIR BODY CONTROL compressor (A9/1) |
40 |
| 2.5 RDGN | Model 290 with engine 177: Low-temperature circuit circulation pump 1 (M43/6) Low-temperature circuit circulation pump 3 (M43/8) |
20 | |||
| 115 | Electrical fuse 115 (K40/8f115) | - | - | Spare | - |
| 116 | Electrical fuse 116 (K40/8f116) | - | - | Spare | - |
| 117 | Electrical fuse 117 (K40/8f117) | 30t | 0.5 RD | Engine 256: Electric refrigerant compressor (A9/5) |
7, 5 |
| 118 | Electrical fuse 118 (K40/8f118) | 87C | 1.0 RDGN | Low-temperature circuit circulation pump 1 (M43/6) | 15 |
| Engine 256: Low-temperature circuit switchover valve (Y73/1) |
|||||
| Model 290 with engine 177: Circuit 87C end sleeve (Z141/2z1) |
|||||
| 119 | Electrical fuse 119 (K40/8f119) | 87C | 1.0 RDBU | Powertrain control unit (N127) Fan motor (M4/7) | 15 |
| Engine 256, 264: Low temperature circuit circulation pump 2 (M43/7) |
|||||
| Model 257 with code 2U1 (Radiator shutters): Upper radiator trim flap actuator motor (M2/38) Lower radiator trim flap actuator motor (M2/39) |
|||||
| Model 290 with code U78 (AMG Sport exhaust system): Left exhaust flap actuator motor (M16/53) Right exhaust flap actuator motor (M16/54) Exhaust flap center actuator motor (M16/55) |
|||||
| Model 257 with code U21 (AMG performance exhaust system): Left exhaust flap actuator motor (M16/53) |
|||||
| 120 | Electrical fuse 120 (K40/8f120) | 30t | 0.5 RDBU | With code 597 (Windshield, heated) and code B01 (48V technology): Windshield heater control unit (N61) |
5 |
| 121 | Electrical fuse 121 (K40/8f121) | 15M | 0.75 RD | Park pawl capacitor (C8) | 10 |
| 122 | Electrical fuse 122 (K40/8f122) | 15M | 1.0 PKRD | Model 290 with code 467 (Electronic locking differential): Electric differential lock control unit (N3/2) |
5 |
| 123 | Electrical fuse 123 (K40/8f123) | 15M | 0.5 BKRD | Front SAM control unit (N10/6) | 5 |
| 124 | Electrical fuse 124 (K40/8f124) | - | - | Spare | - |
| 125 | Electrical fuse 125 (K40/8f125) | 15M | 0.5 PKRD | Powertrain control unit (N127) | 5 |
| With code B01 (48V technology): 48 V on-board electrical system battery (G1/3) |
|||||
| Engine 654, 656: CDI control unit (N3/9) |
|||||
| Engine 256, 264: ME-SFI [ME] control unit (N3/10) |
|||||
| Engine 177: Drive Unit control unit (N145/1) |
|||||
| With code M005 (4MATIC): All-wheel drive control unit (N45) |
|||||
| 126 | Electrical fuse 126 (K40/8f126) | - | - | Spare | - |
| 127 | Electrical fuse 127 (K40/8f127) | 50 | 0.5 VTWH | Except code B01 (48V technology): Voltage dip limiter (R62) |
5 |
| 128 | Electrical fuse 128 (K40/8f128) | 15M | 0.5 PKRD | Exterior lights switch (S1) | 5 |
| 129 | Electrical fuse 129 (K40/8f129) | 15M | 0.5 RD | Electronic Stability Program control unit (N30/4) | 5 |
| 130 | Electrical fuse 130 (K40/8f130) | - | - | Spare | - |
| 132 | Electrical fuse 132 (K40/8f132) | 87 | 0.35 OG | Model 257 with code 489 (AIR BODY CONTROL): AIR BODY CONTROL control unit (N51/3) |
5 |
| 133 | Electrical fuse 133 (K40/8f133) | 30t | 1.5 PKRD | Model 257 with code 631 (LED static headlamp, left-hand traffic) or code 632 (LED static headlamp, right-hand traffic): Left front lamp unit (E1) |
20 |
| With CODE 640 (High Performance LED) or CODE 641 (Dynamic left-hand traffic LED headlamp) or CODE 642 (Dynamic right-hand traffic LED headlamp)): Left front lamp unit (E1) Right front lamp unit (E2) |
| Relay Identification | Designation |
|---|---|
| G | Engine compartment circuit 15 relay (K40/8kG) |
| H | Starter circuit 50 relay (K40/8kH) |
| I | Reserve relay (K40/8kI) |
| J | CPC relay (K40/8kJ) |
| K | Reserve relay (K40/8kK) |
| L | Reserve relay (K40/8kL) |
| M | Reserve relay (K40/8kM) |
| N | Circuit 87M relay (K40/8kN) |
| O | Not assigned |
| P | Backup relay (K40/8kP) |
| Q | Not assigned |
| R | Model 257 with code 489 (AIR BODY CONTROL), model 290 with engine 177: Relay R (K40/8kR) |
|
|
|