Fuses and relays Mercedes Sprinter 3 (W907 / W910; 2018 - 2023)

In 2018, Mercedes-Benz introduced the third generation of the Sprinter van. The model was presented in 6 body variants, the engine has two versions - 2.1 liters and 3 liters. In this article, we will take a detailed look at the fuse box diagrams for the Mercedes Sprinter (3rd gen; body W907 / W910) 2018, 2019, 2020, 2021, 2022, 2023 years of manufacture.

Here you will find the locations and photos of distribution boxes. The fuse responsible for the “cigarette lighter” is highlighted in bold.

In the cabin

There are three distribution boxes here, which are responsible for protecting the vehicle's electrical circuits.

Fuse box #1

Located at the bottom of the driver's seat, behind the protective cover.

Diagram
No.	Description	Amps
F55/1 board
1	Additional turn signal lamp	10
2	Rear window wiper right	15
3	Four-wheel drive	30
4	Terminal block for electrical connection	25
5	driver's seat adjustment	25
6	driver's seat heating	10
7	Driver's lumbar support	25
8	Tire pressure monitoring	5
9	Parking assistant; Main camera (RVC).	5
F55/2 board
10	Trailer hitch right (trailer socket)	25
11	Trailer socket control unit	15
12	Left hitch (trailer socket)	25
13	Trailer socket control unit	15
14	Multi Function Module (MPM)	25
15		25
16	Rear camera blower	25
17	Additional heating	20
18	Automatic transmission, additional oil pump	15
F55/3 board
19	parking heating	15
	Terminal 15 on the auxiliary battery.
20	Auxiliary battery	5
21	Left rear window heater	15
22	Right rear window heater	15
23	Hydroboard / tipper (before installation)	7.5
24	Terminal block for electrical connection	15
25	roof fan relay	5
26	Special signal	7.5
27	Rear window heating	30
F55/4 board
28	Sliding door on the left;	15/30
29	Right sliding door	15/30
30	Antenna switch unit	5
31	Automatic transmission	7.5
32		10
33	brake booster	30
34	Siren relay; Preparing for a motorhome.	15/30
35	A flashing beacon with a siren;	15/30
	Trailer	30
36	Trailer	30
F55/5 board
37	Electric step left	10
38	Electric footboard right	10
39	Warning buzzer;	5
	Electric step, right and left.
40	Automatic transmission (NAT2)	10
41	Terminal 15 special signal	5
42	Interior Mirror with Rear View Monitor, Rear View Camera (RVC);	5
43	Power socket, cab	15
44	Power connector, D-pillar, left	15
45	Power connector, D-pillar, right	15
F55/6 board
51	USB port, left	5/7.5
52	USB port, right	5/7.5

Fuse box #2

It is located behind the trim in the front passenger footwell. To access it, unscrew the two mounting screws, remove the cover and trim.

Diagram
No.	Description	Amps
R1	Reserve	30
R2	Terminal 87, motor	50
R3	Terminal 87 Common Drive Module (CPC)	30
R4	Terminal 15-1	40
R5	Wipers (on / off)	40
R6	Reserve	40
R7	Wipers (speed)	40
R8	Terminal 50 starter	40
R9	Terminal 15R (vehicles without auxiliary battery)	50
R10	Terminal 15-2	30
R11	Terminal 15R (vehicles without auxiliary battery)	50
MF1 board
15-1	ESP system module, four-wheel drive, air suspension, CPC transmission, Engine Control Unit;	5
MF2 board
15-2	Reversing alarm cut-off, PTO, operating speed control; active brake booster sensor, Headlight angle adjustment, Halogen headlight, Tachograph, Feedback cable, Relay terminal 15;	5
MF3 board
30-T	Terminal 15, minimum voltage relay; Instrument panel, DIN connector, Central oil pump, Tachograph, Multifunction camera;	7.5
S9 board
1	empty	-
2	Common Transmission Module (CPC)	10
3	Engine control unit OM642 / OM651 / M274	10
4	DIN connector, cab	7.5
5	Common Transmission Module (CPC)	10
6	Radiator fan (not for OM654)	5
S10 board
7	Automatic transmission	30
8	body controller	30
9		30
10	Heated, SCR catalytic converter.	30
11	Ceiling control module	15
12	Pump, SCR catalytic converter.	15
S11 board
13	Automatic transmission NAT3	60
S12 board
14	ESP valves, vehicles with electromechanical parking brake;	25 / 40
S13 board
16	ESP pump	60
S14 board
17	body controller	30
18		30
19	Terminal block for bodybuilder electrical connection	10
20	Front passenger door control unit	25
21	Driver door controller	25
22	Air Suspension Control Unit (LFA)	10
S15
23	Fan control unit	25
24	USB socket (cockpit, glove box); 115/230V inverter socket.	7.5
25	Cigarette lighter fuse Mercedes Sprinter W907 / W910, center console	15
26	Information panel socket	15
27	Inverter socket, 115V / 230V.	25
28	radio settings; Antenna; Inverter socket 115 V / 230 V	7.5
S16 board
30-1	empty	-
30-2	empty	-
30-3	central locking system	5
30-4	Signaling (ATA)	5
30-5	empty
30-6	Electronic ignition lock control unit	10
31	Start, relay contact 15-II	25
S17 board
32	empty	-
S18 board
33	Voltage quality sensor (SEB)	5
S19 board
34	Electronics for interior lighting	10
- S1
35	Advance Caravanning (ACU) - mobile home	7.5
- S2
36	Air conditioning control panel	5
37	Electric Steering Lock (ESTL)	5
38	Steering column (SCSM)	10
39	Radio, navigation, Antenna;	10
40	Flashing Light	5
41	Radio multimedia system (C5 / NTG6), radio preset	25
- S3
42	Reserve	-
- S4
43	Reserve	-
- S5
44	Multimedia system control panel	5
45	Wireless Mobile Interface (WMI). / Charger bracket;	5
46	Multimedia Connection Box (MMI)	7.5
47	UMTS/LTE communication module	5
48	Stationary heating Telestar	5
49	Central display	5
- S6
50	Auxiliary headlight, left (platform bodybuilder)	5
51	Auxiliary headlight, right (platform bodybuilder)	5
52	Airbag control unit	7.5
53	Diagnostics	5
54	Relay power supply	5
55	TS engine (Diesel), engine control unit (OM651)	7.5
- S7
57	Soot particle sensor;	10
58	Exhaust Gas Recirculation (EGR) (OM642 / OM651);	10
59	NOx sensor before and after catalytic converter (not OM654)	15
60	The Lambda probe	10
61	M274 engine; Engine (OM642 / OM651).	7.5
H2	Reserve	-
62	Engine control unit (not for OM654)	15
63	Engine control unit (M274);	20 / 25
S8	Reserve	-
64	body controller	30
65	body controller	30
66	roof fan	15
67	Fuel Metering Control Module (FSCM)	25
68	Right LED Headlight	15
69	Left LED headlight	15
H2	Reserve	-
70	Windscreen wipers	30

Power Fuse-Links and Relay Unit 

A power fusible link board is located on the plus terminal of the battery.

Diagram
No.	Description	Amps
F150/1 board (MFB-1)
1	Battery charge sensor	-
2	Not assigned	-
3	Main fuse box (MFB-2)	-
4	Power Distribution Center Terminal 30 (F30-1 - F30-6)	50
5	Additional PTC heater	125
F150/4 board (MFB-2)
1	Terminal 30T, fuse box, driver's seat base (F55/1-F55/6)	125
2	Electrical control	125
3	Alternator	300
4		400
5	Power Distribution Center (PDC), FB-P	175
6	Glow output stage (GZE)	80
7	radiator fan	40/70/80
8	Main fuses	100
9	empty
10	Air conditioning in the rear	25/50/100
11	Additional battery / battery disconnect relay;	100/150
	Retarder without additional battery.
12	Air Suspension (LFA)	40
13	Heated windshield	80
Board F150/5 (MFB-ZB)
1	Retarder	100
2	Hydroboard / tipper (preparation)	250
3	additional battery
4	Battery disconnect relay	150
5	Socket, converter	60
6	Additional heating	25
Board F59/1 and F59/2
1	Heated windshield	40
2	Heated windshield right	40

The relay box is located under the driver's seat.

Relay box diagram
No.	Purpose
1	Heated windshield
2	Terminal 15
3	Rear window heating
4	12V Outlets, rear
5	Interior lighting
6	Reserve
7	Reserve
8	Reserve
9	Reserve
10	Reserve
11	Reserve
12	Reserve
13	Reserve
14	Reserve
—	mini relay
15	Right rear wiper
16	Manufacturer's terminal block housing
17	Switch, reverse control signal
18	roof fan
19	Additional oil pump
20	Electric footrest right 1/2
21
22	Electric footrest left 1/2
23
24	Horn (beep)
25	Flashing beacon with siren
26	Loading elevator