Find Mercedes-Benz GLB-Class fuse box diagrams for 2020–2026 models with fuse locations, panel layouts, and detailed electrical information for all variants. This article covers the first-generation Mercedes-Benz GLB-Class (Model Code: X247) , available from 2020 , and includes fuse box diagrams for Mercedes-Benz GLB180, GLB200, GLB250, GLB35, GLB180d, GLB200d and GLB220d (2020, 2021, 2022, 2023, 2024, 2025 and 2026) , along with details about the location of the fuse panels inside the vehicle and a clear explanation of the assignment of each fuse (fuse layout).
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It is situated in the engine compartment on the driver’s side. To access the fuses, unscrew bolts (1), then press the clips (2) and remove the cover.
Assignment of the fuses in the engine compartment
Fuse Data
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No. Amps Description 21 30A CBC / SAM, Headlights 22 20A Headlights 23 40A ESP, Parking brake 24 60A ESP, Parking brake 25 — – 26 15A / 25A Engine Control Unit 27 15A Diagnosis, Engine Control Unit 28 15A Engine Control Unit 29 15A Diesel Engine, Engine Control Unit 30 15A Engine Control Unit, Hybrid 31 10A Engine Control Unit, Hybrid 32 — – 33 — – 34 — – 35 — – 36 — – 37 — – 38 — – 39 — – 40 30A CBC / SAM, Headlights 41 10A Engine Control Unit 42 30A CBC / SAM, Fanfare horn, Windshield wipers front, Rain sensor 43 10A Automatic Transmission, Engine Control Unit 44 30A Windshield wipers front, Rain sensor 45 — Automatic Transmission 46 10A Hybrid 47 7.5A Distronic / FCW 48 20A Headlights 49 — Automatic Transmission 50 5A Hybrid 51 — Automatic Transmission 52 — A/C system / heater 53 7.5A A/C system / heater 54 10A Engine Control Unit 55 7.5A Engine Control Unit 56 5A Engine Control Unit 57 10A Automatic Transmission, Diesel Engine, Hybrid 58 — – 59 — – 60 — 4-Wheel drive, AMG 61 — Hybrid 62 — – 63 5A Hybrid 64 — Headlights 65 — Driving School 66 5A Hybrid 67 5A Diesel Engine 68 5A CBC / SAM 69 5A Engine Control Unit 70 7.5A Distronic / FCW 71 5A Engine Control Unit 72 5A ESP, Parking brake 73 30A Starter 74 Diode Starter 75 5A Starter 76 40A Hybrid 77 — – 78 — ESP, Parking brake, Hybrid
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It is situated beneath the mat on the front passenger side. To access the fuses, fold the mat (1) back in the direction indicated by the arrow, then unscrew the bolts (2) and remove the block cover.
Assignment of the fuses in the passenger compartment
Fuse Data
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No. Amps Description 103 40A A/C system / heater 104 30A Radio system 105 30A / 40A AMG (30A): 4-Wheel driveDiesel (40A): 4-Wheel drive106 30A Anti-theft alarm system, CBC/SAM, Central locking, Wipers rear 107 5A Distronic / FCW 108 5A Emergency call system 109 15A Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel 110 10A Diagnosis 111 7.5A Instrument Cluster 112 7.5A Airbag Restraint System 113 30A Tilting / Sliding roof 114 15A Damper adjustment 115 30A Airbag Restraint System 116 7.5A Seat driver, Seat passenger 117 30A Central console or 115/230V socket 118 — – 119 30A Airbag Restraint System 120 — – 121 40A Heated rear windows 122 — – 123 10A Power socket / USB 124 20A Cigar lighter / socket front 125 — – 126 20A Socket, load compartment, special vehicles 127 — – 128 — – 129 10A Anti-theft alarm system 130 5A Hybrid 131 5A Radio system 132 7.5A Electronic ignition lock, Steering column lock 133 — – 134 30A 4-Wheel drive, AMG 135 15A Diesel: Engine136 30A Seat driver, Seat passenger 137 — – 138 30A Seat driver, Seat passenger 139 20A 4-Wheel drive, AMG 140 15A Overhead control panel 141 — – 142 7.5A Rotary light switch 143 7.5A Control panel 144 5A Control panel, Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel 145 10A Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel 146 7.5A Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel 147 — – 148 5A Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel 149 10A 4-Wheel drive, AMG 150 — – 151 7.5A Hybrid 152 25A Instrument Cluster, Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel, Radio system 153 10A Hybrid 154 30A Door functions 155 10A Hybrid 156 30A Door functions 157 — – 158 30A CBC/SAM, Exterior lighting, Hazard warning flashers / ECO 159 25A Fuel pump 160 10A Electronic ignition lock, Steering column lock 161 30A Door functions 162 — – 163 30A Door functions 164 — – 165 30A CBC/SAM, Exterior lighting, Hazard warning flashers / ECO 166 — A/C system / heater, Japan: ETC/DSRC Card Reader 167 5A Central locking, Tire pressure monitoring system 168 5A Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel 169 7.5A Distronic / FCW, Exterior lighting, Hazard warning flashers / ECO, Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel, Windshield wipers front, Rain sensor 170 10A Cigar lighter / socket front, Multi-Media Box, Telephone system, Navigation, Multifunction steering wheel 171 7.5A Parktronic system
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The fuse box is located beneath the floor panel in the luggage compartment. Lift the trunk floor lid to access it.
Assignment of the fuses in the luggage compartment
Fuse Data
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No. Amps Description 202 25A Trailer hitch 208 Trailer hitch 209 20A Trailer hitch 210 30A Trailer hitch 211 20A Trailer hitch
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