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 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 17 of 22
Relays in the seat base of the left front seat
No. Relays Description
R1 K6
Starter relay, right-hand drive
6R2 K41 Load relief relay, terminal 15
R3 K41/5 Starter relay, terminal 15
R4 K64
K110 Secondary air injection/secondary air pump relay
SCR relay
8
, vehicles with exhaust gas aftertreatment R5 K27 Fuel pump relay
R6 K23/1 Blower relay, front, blower setting 1
R7 K41/2 Load relief relay, terminal 15 R
R8 K6/1 Starter relay, additional battery
K6
Starter relay, left-hand drive
6R9 K13/5 Rear window defroster relay 1
R10 K13/6 Rear window defroster relay 2 with ATA (Anti-Theft
Alarm system)
K51/15 Snow plow relay, low-beam headlamps, left
R11 K117/3 Electrical step relay 1, left
K51/16 Snow plow relay, low-beam headlamps, right
R12 K117/4 Electrical step relay 2, left
6
Vehicles with code XM0.
8 Selective Catalytic Reduction. Fuses and relays
15 Z