Mercedes-Benz A-Class W176 (2012-2018) – fuse box

Mercedes-Benz A-Class W176 (2012-2018) – fuse box diagram

Year of production: 2012, 2013, 2014, 2015, 2016, 2017, 2018.

The cigarette lighter fuse (power socket) on the Mercedes A-Class w176 (2012-2018) is fuse 72 in the fuse box in the passenger footwell .

READ:  Mercedes-Benz A-Class W177 / V177 (2018-2021) - fuse box

Fuse box in the engine compartment

Mercedes-Benz A – Class w176 – fuse box diagram – engine compartment
Number Description Amperes [A]
201 Alarm siren 5
202 Stationary heater control unit 20
203 LED headlight:

Right front headlight

15
204 Electronic stability program control unit 25
205 Left horn;

Right horn.

15
206 Valid for engine 651:  

CDI control unit;

Valid for engine 607: 

Powertrain control unit.

5
207 Valid for diesel engine: 

Circuit relay 87M

5
208 Valid for engine 133, 607:  

Circuit relay 87

7.5
209 LED headlight:

Left front headlight

15
210 Heated windshield relay;

from 01/09/2015:  

Starter front relay.

5
211 Not used
212 Valid for engine 133, 270:

Connecting sleeve, circumference 87M3;

Applies to S ilnik 651:

Heating element of the deaeration hose;

Coolant thermostat heating element;

Exhaust gas recirculation cooler bypass reversing valve;

Valid for engine 607 (EU5 emission standard):

Oxygen sensor in front of the catalyst;

Boost pressure positioner;

Valid for engine 607 (EU6 emission standard):  

Oxygen sensor in front of the catalyst;

Valid for engine 607: 

CDI control unit.

15
213 Valid for engines 133, 270, 651: 

Joint sleeve, circumference 87 M2e;

Valid for engine 607 (EU5 emission standard):

Camshaft;

Hall sensor;

CDI control unit;

Quantity control valve ;

Valid for engine 607 (EU6 emission standard):

Oxygen sensor after catalytic converter;

CDI control unit.

15
214 Valid for engines 133, 270, 651:

Connecting sleeve, circumference 87 M4e

10
215 Valid for gasoline engine:

Cylinder 1 ignition coil;

Cylinder 2 ignition coil;

Cylinder 3 ignition coil;

Cylinder 4 ignition coil;

Valid for engine 651: 

Quantity control valve

Valid for engine 607:

CDI control unit;

Boost pressure regulator  ;

Quantity control valve.

20
216 Valid for gasoline engine:  

ME-SFI control unit;

Valid for engine 607:

Powertrain control unit.

5
217 Valid with gearbox 724:

The fully integrated control unit gearbox  transmission with double clutch.

25
218 Electronic stability program control unit 5
219 Not used
220 Gear coolant circulation pump 10
221 Not used
222 Not used
223 Not used
224 Electric controller DISTRONIC;

COLLISION PREVENTION ASSIST control unit.

7.5
225 Not used
226 Not used
227 Not used
228 Not used
229 Left Headlight Assembly 5
230 Electronic stability program control unit 5
231 Right headlight assembly 5
232 Headlamp control unit 15
233 Not used
234 Valid for engine 607: 

Powertrain control unit

5
235 Valid for engine 607:

Fan motor;

Radiator shutter actuator.

7.5
Valid for engine 133:

Charge air cooler circulation pump.

7.5
236 SAM control unit 40
237 Electronic stability program control unit 40
238 Heated windscreen 50
239 Wiper speed relay 1/2 30
240A Starter relay 50 25
240B Circuit 15 of Relay (Not Latched) 25
241 Not used 7.5
Relay
J. Horn relay
K. Wiper speed relay 1/2
L Windshield wiper on / off relay
M. Starter relay 50
N Circuit Relay 87M.
O ECO start / stop:

Transmission coolant circulation pump relay

P. Backup relay (F58kP)
Q Circuit 15 of Relay (Not Latched)
R Circuit 15 relay
S Circuit 87 of the relay
T. Heated windshield relay

Fuse box in passenger footwell

Mercedes-Benz A-Class w176 – fuse diagram – front passenger’s leg
Number Description Amperes [A]
21 Valid for diesel engine: 

PTC heater amplifier

150
22 Additional battery relay for the ECO start / stop function 200
23 Left front door control unit 30
24 Right front door control unit 30
25 SAM control unit 30
26 Additional ECO start / stop battery connector sleeve 10
27 Engine compartment fuse and relay module 30
28 Sound generator control unit in the interior of the vehicle 5
29 until 02/11/2014: 

Trailer socket;

from 03/11/2014:  

Trailer recognition control unit.

15
30 Trailer recognition control unit 5
31 4MATIC:

All-wheel drive controller

5
32 Steering wheel lamp module control unit 5
33 Audio / COMAND control panel 5
34 ACC control and operating unit 7.5
35 Rear window heating 40
36 Driver seat control unit;

Driver’s seat lumbar support adjustment control unit.

7.5
37 Audio / COMAND display 7.5
38 Supplementary restraint system control unit 7.5
39 Suspended control unit control unit 10
40 Valid for engine 651 (EU6 emission standard): 

Powertrain control unit

15
41 Panoramic sliding sunroof control module 30
42 Radio (Audio 5 USB, Audio 20 CD, Audio 20 CD with CD changer);

COMAND control unit.

5
Radio (Radio 20, Audio 20 USB) 25
43 Parking system control unit 5
44 Left front reversible emergency tension retractor 40
45 Right front reversible emergency tensioner 40
46 Front passenger seat control unit;

Control unit for the lumbar support adjustment of the passenger seat.

7.5
47 Navigation module;

IPhone® handle control unit.

7.5
Adaptive damping system control unit 25
48 Not used
49 Control unit for Drive Kit for iPhone ® 7.5
COMAND fan motor 5
50 Camera cover control unit 5
51 Not used
52 Not used
53 Not used
54 Not used
55 Telematics services communication module
KEYLESS-GO control unit
5
56 Steering wheel lamp module control unit 10
57 Lane Keeping Assistant: 

Multifunctional control unit for a special purpose vehicle.

30
Special vehicle:

multifunctional control unit for a   special purpose vehicle

7.5
58 Emergency vehicle fuse box 30
59 Front passenger seat control 30
60 Driver seat control unit 30
61 Sound system amplifier control unit 40
62 Valid for gearbox 711:  

Electric steering lock

20
63 Fuel system control unit 25
64 Electronic toll collection control unit;

Dedicated control unit for short-range communications.

1
65 Lamp in the glove box 5
66 Emergency vehicle fuse box 15
67 Not used
68 Not used
69 Not used
70 Rear center console socket 25
71 Trunk socket 25
72 Front cigarette lighter with ashtray lighting;

Vehicle interior power socket.

25
73 Electric parking brake control unit 30
74 Electric parking brake control unit 30
75 Trailer recognition control unit 20
76 Trailer recognition control unit 25
77 Trailer recognition control unit 25
78 Emergency vehicle fuse box 40
79 SAM control unit 40
80 SAM control unit 40
81 Blower regulator 40
82 Suspended control unit control unit 10
83 Electronic ignition lock control unit 7.5
84 Top control panel control unit 5
85 ATA [EDW] / towing protection / interior guarding control unit 5
86 FM, AM and CL [ZV] antenna amplifier;

from 01/06/2016:

Antenna amplifier / compensator for a mobile phone system.

5
87 Diagnostic connector 10
88 Instrument cluster 10
89 Exterior lights switch 5
90 Left rear bumper smart radar sensor;

smart radar sensor for the right rear bumper.

5
91 Pedal operation monitor switch;

Leg lighting switch.

5
92 Fuel system control unit 5
93 Electric parking brake control unit 5
94 Supplementary restraint system control unit 7.5
95 Front passenger seat occupancy recognition and
ACSR Weight Sensing System (WSS) control unit
7.5
96 Tailgate Wiper Motor 15
97 Mobile phone electrical connector 5
98 SAM control unit 5
99 Tire pressure monitor control unit 5
100 Valid for engine 133: 

DIRECT SELECT INTERFACE

5
101 4MATIC:

All-wheel drive controller 

10
102 Stationary heater remote control receiver;

Valid for AMG vehicles from 01/09/2015:  

Transmission mode control unit;

from 01/06/2016:  

Antenna switch for telephone and stationary heater.

5
103 Emergency call system control unit;

Telematics services communication module;

HERMES control unit.

5
104 Multimedia interface control unitMultimedia connection unit 5
105 Digital Audio Broadcasting control unit;

Satellite digital audio radio (SDAR) control unit.

5
Tuner module 7.5
106 Multifunctional camera 5
107 Digital TV tuner 5
108 until May 31, 2016:

Reversing camera

5
from 01/06/2016: 

Reversing camera

7.5
109 Electrical connector for the charging socket 20
110 COMAND radio control;

Engine sound driver.

30
Relay
A Circuit 15 relay
B Rear window wiper relay
C. Relay circuit 15R2
D Heated rear window relay
E. 15R1 circuit of the relay
F. Relay circuit 30g
G. Not used

Front electric fuse box

Mercedes-Benz A-Class W176 – fuse box diagram – front electric box
Mercedes-Benz A-Class W176 – fuse box diagram – front electric box
Number Description Amperes [A]
1 Alternator 300
2 Fuse box inside the vehicle 200
Valid for diesel engine: 

Vehicle interior fuse box

250
3 Electric power steering control unit 100
4 SAM control unit 40
5 Fan motor 80
6 Valid for engine 607:  

Fuel heating control unit

70
7 Valid for engine 607 (EU5 emission standard):

Control unit supporting DPF regenerative heater

125
8 Valid for engines 607, 651:  

Glow output stage

100
Relay
F32k1 Decoupling relay

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