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
Fuse block F55/6
No. Consumer Fuse
rating 28 SRB starter relay (fuse
and relay module)
3, 6
Starter for electrical sup- ply support using the
additional battery 25 A
29 Terminal 87 (7), gas sys-
tem, vehicles with a nat-
ural gas engine (NGT)
2 7.5 A
SCR
8
control unit, vehi-
cles with exhaust gas
aftertreatment 3 10 A
Terminal 30, all-wheel
drive, control unit 30 A
30 Auxiliary heat exchanger
fan 15 A
Brake booster
3 30 A
31 Rear compartment heat-
ing blower 30 A
Sliding door closing
assistance, left 15 A
Electric sliding door, left 30 A
32
SCR
8
relay supply, vehi-
cles with exhaust gas
aftertreatment 5 A
KEYLESS ENTRY 10 A
33 Electric sliding door,
right 30 A
Sliding door closing
assistance, right 15 A No. Consumer Fuse
rating ENR (level control) con-
trol unit 30 A
Compressor air suspen-
sion 30 A
34
SCR
8
heater 3 DEF (Die-
sel Exhaust Fluid) supply reservoir, vehicles with
exhaust gas aftertreat-
ment, 6 cyl. diesel 9, 3 15 A
SCR
8
heater 1 DEF ®
,
vehicles with exhaust
gas aftertreatment die-
sel 10 20 A
35
SCR
8
heater 2 hose,
vehicles with exhaust
gas aftertreatment, 6
cyl. diesel 9, 3 15 A
SCR
8
heater 2 DEF, vehi-
cles with exhaust gas
aftertreatment diesel 10 25 A
36
SCR
8
heater 1 delivery
pump, vehicles with
exhaust gas aftertreat-
ment, 6 cyl. diesel 9, 3 10 A
SCR
8
heater control 3
DEF, vehicles with
exhaust gas aftertreat-
ment diesel 10 15 A
3
NAFTA
6 Vehicles with code XM0.
2 Natural Gas Technology.
8 Selective Catalytic Reduction.
9 Vehicles with code MH3.
10 Not for vehicles with code MH3. Fuses and relays
13 Z
Fuse block F55/7
No. Consumer Fuse
rating 37 COLLISION PREVEN-
TION ASSIST/FCW
(Forward Collision Warn-
ing) 5 A
Blind Spot Assist/BSM
(Blind Spot Monitor) 5 A
38 Multifunction camera
with Highbeam Assist 10 A
With a warning when
leaving a lane 10 A
39 Body electrics (courier
vehicles) 7.5 A
Rear-compartment air-
conditioning system 7.5 A
Roof ventilator 15 A
Siren 15 A
40 Auxiliary battery charge
current
11 15 A
41 SAM (signal acquisition
and actuation module)
auxiliary battery refer-
ence voltage
11 7.5 A
42 Rear-compartment air-
conditioning system 30 A
43 Electrical step/sliding
door, right 10 A
44 Electrical step/sliding
door, left 10 A
45 Electrical step, control
system and warning buz-
zer 5 A Fuses in the seat base of the left front
seat
There are additional fuses in the seat base, for
example:
R for the rear-compartment air conditioning
R for the windshield heating
R for other vehicle components, such as
power steering pumps, auxiliary batteries,
battery cutoff relays and PTC heater boos-
ters
R from the body manufacturers for retarders,
loading tailgates, hydraulic pump and tip-
pers
Always have the fuses in the seat base
replaced at a qualified specialist workshop.
11 Vehicles with auxiliary battery. 14
Fuses and relays
