Page 6 of 22
Configuration
Fuses
The F87 fuse (30 A) for the DC/DC converter
is under the SRB fuse and relay module in the main fuse box. Have this fuse changed at a
qualified specialist workshop only.
SRB fuse and relay module No. Consumer Fuse
rating 1 Horn 15 A
2 ESTL (electric steering
lock) ignition lock 25 A
3 Terminal 30 Z, vehicles
with a gasoline engine/
ignition lock/instrument
cluster 10 A
4 Light switch/switch unit
on center console 5 A
5 Windshield wipers 30 A
6 Fuel pump 15 A No. Consumer Fuse
rating Terminal 87 (5)
1 10 A
7 MRM (jacket tube mod-
ule) 5 A
8 Terminal 87 (2) 20 A
9 Terminal 87 (1) 25 A
Terminal 87 (3), vehicles
with a gasoline engine 20 A
Terminal 87 (3), vehicles
with a diesel engine 25 A
10 Terminal 87 (4) 10 A
11 Terminal 15 R vehicle 15 A
12 Air bag control unit 10 A
1
Vehicles with code MI6/MH3/XM0. 4
Fuses and relays
Page 7 of 22
No. Consumer Fuse
rating 13 Cigarette lighter/glove
box lamp/radio/body
manufacturer loading
tailgate/PND (personal
navigation device) power
socket 15 A
14 Diagnostics connec-
tion/light switch/instru-
ment cluster/deactivat-
ing reverse warning
device/anti-theft pro-
tection with vehicle
tracking 5 A
15 Headlamp range con-
trol/front-compartment
heating 5 A
16 Terminal 87 (1)
Terminal 87 (3)
1 10 A
17 Air bag control unit 10 A
18 Terminal 15 vehicle/
brake light switch 7.5 A
19 Interior lighting 7.5 A
20 Front-passenger door
power window switch/
terminal 30/2 SAM (sig-
nal acquisition and
actuation module) 25 A
21 Engine control unit 5 A
22 Brake system (ABS) 5 A
23 Starter motor 20 A
Terminal 87 (6)
1 10 A No. Consumer Fuse
rating 24 Diesel engine, engine
components/control
unit, vehicles with a nat-
ural gas engine NGT
2 10 A
25 12 V socket (center con-
sole) for tire sealant 25 A
Fuse block F55/1
No. Consumer Fuse
rating 1 Driver's door control unit 25 A
2 Diagnostics connection 10 A
3 Brake system (valves) 25 A
4 Brake system (delivery
pump) 40 A
5 Terminal 87 (2a) engine
M272, OM651 7.5 A
Terminal 87 (2a) engine
OM642, OM651
3 10 A
6 Terminal 87 (1a) engine
OM642
6 10 A
Terminal 87 (1a) engine
OM651
6 7.5 A
Terminal 87 (3a) engine
M272, M271, OM651 7.5 A
7 Headlamp cleaning sys-
tem 30 A
1
Vehicles with code MI6/MH3/XM0.
2 Natural Gas Technology.
3 NAFTA
6 Vehicles with code XM0. Fuses and relays
5 Z
Page 8 of 22
No. Consumer Fuse
rating 8 Anti-theft alarm system
(ATA)/beacon/beacon
with siren 15 A
9 Additional turn signal
module 10 A
Fuse block F55/2
No. Consumer Fuse
rating 10 Radio 1 DIN
Radio 2 DIN 15 A
20 A
11 Mobile phone/tacho-
graph/additional
recorder
4
/navigation
cradle 6 7.5 A
12 Front blower/auxiliary
heating blower setting 1 30 A
13 Auxiliary heating system
digital timer/radio
receiver/DIN slot basic
wiring/FleetBoard/anti-
theft protection with
vehicle tracking 7.5 A
14 Seat heating 30 A
15 Brake system control
unit 5 A
16 Heating, rear compart-
ment heating/ front-
compartment air condi-
tioning 10 A
17 Convenience lighting 10 A
Motion detector 7.5 A No. Consumer Fuse
rating Reading and cargo com-
partment lamp (courier
vehicles) 10 A
Cargo compartment
lighting 7.5 A
18 Rear-compartment air-
conditioning system 7.5 A
Pre-fuse box in the battery compartment in the
footwell on the left-hand side of the vehicle F59
No. Consumer Fuse
rating 1 Preglow relay 80 A
Secondary air pump for
vehicles with a gasoline
engine 40 A
2 Air-conditioning system
cooling fan – cab without
partition and without
rear-compartment air-
conditioning system 60 A
Air-conditioning system
cooling fan – cab with
partition and reinforced
without rear-compart-
ment air-conditioning
system 40 A
4
Latin America only.
6 Vehicles with code XM0. 6
Fuses and relays
Page 13 of 22
Configuration
Fuses
Fuse block F55/3
No. Consumer Fuse
rating 1 Mirror setting/rear win-
dow defroster 5 A
2 Rear window wiper 30 A
3 Auxiliary heating, digital
timer/rear view cam-
era/neutral gate switch,
starting-off aid and all-
wheel drive/engine run-
on/DIN slot basic wiring
(roof)/FleetBoard/anti-
theft protection with
vehicle tracking/emer-
gency hammer lighting in
the rear compartment 5 A
4 Tachograph/ADR work-
ing speed governor/
power take-off/AAG
(trailer control unit) 7.5 A
5 ECO Start/control unit 5 A No. Consumer Fuse
rating EGS (electronic gearbox
control) 10 A
6 All-wheel drive control
unit 5 A
Auxiliary oil pump 10 A
7 ESM (electronic selector
module) 10 A
8 Loading tailgate/tipper
vehicle
PARKTRONIC
6 10 A
9 Rear compartment air
conditioning, compres-
sor clutch, disengagea-
ble reverse warning
device 7.5 A
6
Vehicles with code XM0. Fuses and relays
11 Z
Page 14 of 22
Fuse block F55/4
No. Consumer Fuse
rating 10 Terminal 30, body/
equipment manufac-
turer 25 A
11 Terminal 15, body/
equipment manufac-
turer 15 A
12 D+, body/equipment
manufacturer 10 A
13 Fuel pump FSCM (Fuel
Sensing Control Module) 20 A
Fuel pump relay
1, 3 15 A
14 Trailer power socket 20 A
15 Trailer recognition unit 25 A
16 Tire pressure monitor
PARKTRONIC
7 7.5 A
17 Programmable special
module (PSM) 25 A
18 Programmable special
module (PSM) 25 A
Fuse block F55/5
No. Consumer Fuse
rating 19 Overhead control panel
without ATA (Anti-Theft
Alarm system) and with-
out rain sensor 5 A
Overhead control panel
with ATA (Anti-Theft
Alarm system) 25 A No. Consumer Fuse
rating Overhead control panel
with rain sensor 25 A
20 License plate lamp (cou-
rier vehicles)/perimeter
lamp
3
/identification
lighting 3 7.5 A
21 Terminal 30, body elec-
trics (courier vehicles) 15 A
Rear window defroster
without ATA (Anti-Theft
Alarm system) 30 A
Rear window defroster
with ATA (Anti-Theft
Alarm system) 15 A
22 Rear window defroster 2 15 A
Vehicle socket (courier
vehicles) 20 A
23 12 V left rear socket,
load/rear compartment 15 A
Electric system: non-MB
body 10 A
24 12 V socket under the
base of driver's seat 15 A
25 12 V right rear socket,
load/rear compartment 15 A
26 Hot-water auxiliary heat-
ing 25 A
27 Electrical heater booster
(PTC) 25 A
Auxiliary warm-air heater 20 A
1
Vehicles with code MI6/MH3/XM0.
3 NAFTA
7 Pre-facelift vehicle. 12
Fuses and relays
Page 18 of 22
No. Relays Description
K51/17 Snow plow relay, high-beam headlamps, left
R13 K41/3 Load relief relay, terminal 15 (2)
K51/18 Snow plow relay, high-beam headlamps, right
R14 K13/7 Windshield heating relay 1
R15 K88 Body manufacturer relay, terminal 15
R16 K88/1 Body manufacturer relay, terminal 61 (D+)
R17 K95
K93 Loading tailgate basic wiring relay
Comfort illumination relay
R18 K2 Headlamp cleaning system relay
R19 K51/10 Beacon with siren relay
R20 K39/3 ATA (anti-theft alarm system) relay, horn
R21 K108
K116
K23/2
Perimeter/identification lighting relay
3
License plate lamp relay (courier vehicles)
Blower relay, hot-air auxiliary heating, blower setting
1 R22 K23/3 Blower relay, hot-air auxiliary heating, blower setting
2 R23 K39/1 Siren relay
K124/1 Terminal 61 (D+) relay, anti-theft protection with
vehicle tracking R24 K117/1 Electrical step relay 1, right
R25 K117/2 Electrical step relay 2, right
R26 K121 Reverse warning device off relay
K124 Anti-theft protection with vehicle tracking relay
Other relays
No. Relays Description
— K57 Battery cutoff relay, left-hand-drive vehicle
— K57/4 Battery cutoff relay, right-hand-drive vehicle
— K9 Air-conditioning system relay, auxiliary fan (duo)
3
NAFTA 16
Fuses and relays
