Mercedes-Benz A-Class (W176; 2013-2018) fuses and relays

 

In this article, we consider the third-generation Mercedes-Benz A-Class (W176), produced from 2012 to 2018. Here you will find fuse box diagrams of Mercedes-Benz A160, A180, A200, A220, A250 2013, 2014, 2015, 2016, 2017 and 2018, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.

Fuse Layout Mercedes-Benz A-Class 2013-2018


Cigar lighter (power outlet) fuses in the Mercedes-Benz A-Class are the fuses #70 (Rear center console socket), #71 (Luggage compartment socket) and #72 (Front cigarette lighter, interior power outlet) in the Passenger Compartment fuse box.


Passenger Compartment Fuse Box

Fuse box location

The fuse box is located under the floor near the passenger seat (remove the floormats and covering).The location of the fuses in the passenger compartment: Mercedes-Benz A-Class (2013-2018)

Fuse box diagram

Interior fuse box diagram: Mercedes-Benz A-Class (2013-2018)

 

Assignment of the fuses and relay in the passenger compartment

Fused function Amp
21 Valid for diesel engine: PTC heater booster 150
22 Additional battery relay for 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 ECO start/stop additional battery connector sleeve 10
27 Engine compartment fuse and relay module 30
28 Vehicle interior sound generator control unit 5
29 up to 02.11.2014: Trailer socket
as of 03.11.2014: Trailer recognition control unit
15
30 Trailer recognition control unit 5
31 4MATIC: All-wheel drive control unit 5
32 Steering column tube module control unit 5
33 Audio/COMAND control panel 5
34 ACC control and operating unit 7.5
35 Rear window heater 40
36 Driver seat control unit
Driver seat lumbar support adjustment control unit
7.5
37 Audio/COMAND display 7.5
38 Supplemental Restraint System control unit 7.5
39 Overhead control panel control unit 10
40 Valid for engine 651 (Emissions standard EU6): 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 controller unit
5
42 Radio (Radio 20, Audio 20 USB) 25
43 Parking system control unit 5
44 Left front reversible emergency tensioning retractor 40
45 Right front reversible emergency tensioning retractor 40
46 Front passenger seat control unit
Front passenger seat lumbar support adjustment control unit
7,5
47 Navigation module
iPhone® cradle control unit
7,5
47 Adaptive damping system control unit 25
48 Not used
49 Control unit for Drive Kit for iPhone® 7,5
49 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 communications module
KEYLESS-GO control unit
5
56 Steering column tube module control unit 10
57 Lane Keeping Assist:  Special-purpose vehicle multifunction control unit 30
57 Special vehicle:  Special-purpose vehicle multifunction control unit 7,5
58 Emergency vehicle fuse box 30
59 Front passenger seat control uni 30
60 Driver seat control unit 30
61 Sound system amplifier control unit 40
62 Valid for transmission 711: Electric steering lock control unit 20
63 Fuel system control unit 25
64 Electronic Toll Collection control unit
Dedicated Short-Range Communications control unit
1
65 Glove compartment lamp 5
66 Emergency vehicle fuse box 15
67 Not used
68 Not used
69 Not used
70 Rear center console socket 25
71 Luggage compartment socket 25
72 Front cigarette lighter with ashtray illumination
Vehicle interior power outlet
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 Overhead control panel control unit 10
83 Electronic ignition lock control unit 7,5
84 Upper control panel control unit 5
85 ATA [EDW]/tow-away protection/interior protection control unit 5
86 FM, AM and CL [ZV] antenna amplifier
as of 01.06.2016: Cellular telephone system antenna amplifier / compensator
5
87 Diagnostic connector 10
88 Instrument cluster 10
89 Exterior lights switch 5
90 Left rear bumper intelligent radar sensor
Intelligent radar sensor for right rear bumper
5
91 Pedal operation monitor switch
Footwell illumination switch
5
92 Fuel system control unit 5
93 Electric parking brake control unit 5
94 Supplemental Restraint System control unit 7,5
95 Front passenger seat occupied 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 control unit 10
102 Stationary heater radio remote control receiver
Valid for AMG vehicles as of 01.09.2015: Transmission mode control unit
as of 01.06.2016: Antenna changeover switch for telephone and stationary heater
5
103 Emergency call system control unit
Telematics services communications module
HERMES control unit
5
104 Media interface control unit
Multimedia connection unit
5
105 Digital Audio Broadcasting control unit
Satellite digital audio radio (SDAR) control unit
5
105 Tuner unit 7,5
106 Multifunction camera 5
107 Digital TV tuner 5
108 up to 31.05.2016: Reversing camera 5
108 as of 01.06.2016: Reversing camera 7,5
109 Charging socket electrical connector 20
110 Radio COMAND controller unit Engine sound control unit 30
Relay
A Circuit 15 relay
B Rear window wiper relay
C Circuit 15R2 relay
D Heated rear window relay
E Circuit 15R1 relay
F Circuit 30g relay
G Not used

Front Electrical Prefuse Box

Front Electrical Prefuse Box: Mercedes-Benz A-Class (2013-2018)

Front Electrical Prefuse Box

Fused function Amp
1 Alternator 300
2 Vehicle interior fuse box 200(petrol)
250(diesel)
3 Electrical power steering control unit 100
4 SAM control unit 40
5 Fan motor 80
6 Valid for engine 607: Fuel preheating control unit 70
7 Valid for engine 607 (Emissions standard EU5): DPF regeneration heater booster control unit 125
8 Valid for engine 607, 651: Glow output stage 100
Relay
F32kl Decoupling relay

Engine Compartment Fuse Box

Fuse box location

The location of the fuses in the engine compartment: Mercedes-Benz A-Class (2013-2018)

Fuse box diagram

Under-hood fuse box diagram: Mercedes-Benz A-Class (2013-2018)

Assignment of the fuses and relay in the engine compartment

Fused function Amp
201 Alarm siren 5
202 Stationary heater control unit 20
203 LED headlamp: Right front lamp unit 15
204 Electronic Stability Program control unit 25
205 Left fanfare horn Right fanfare 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 87 relay 7.5
209 LED headlamp: Left front lamp unit 15
210 Heated windshield relay
as of 01.09.2015: Starter front-end relay
5
211 Not used
212 Valid for engine 133, 270: Connector sleeve, circuit 87M3

Valid for engine 651:
Vent line heater element
Coolant thermostat heating element
Exhaust gas recirculation cooler bypass switchover valve

Valid for engine 607 (Emissions standard EU5):
Oxygen sensor upstream of catalytic converter
Boost pressure positioner

Valid for engine 607 (Emissions standard EU6): Oxygen sensor upstream of catalytic converter

Valid for engine 607: CDI control unit

15
213 Valid for engine 133, 270, 651: Connector sleeve, circuit 87 M2e

Valid for engine 607 (Emissions standard EU5):
Camshaft Hall sensor
CDI control unit
Quantity control valve

Valid for engine 607 (Emissions standard EU6):
Oxygen sensor downstream of catalytic converter
CDI control unit

15
214 Valid for engine 133, 270, 651: Connector sleeve, circuit 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 positioner
Quantity control valve

20
216 Valid for gasoline engine: ME-SFI control unit
Valid for engine 607: Powertrain control unit
5
217 Valid with transmission 724: Dual clutch transmission fully integrated transmission control unit 25
218 Electronic Stability Program control unit 5
219 Not used
220 Transmission cooling coolant circulation pump 10
221 Not used
222 Not used
223 Not used
224 DISTRONIC electric controller unit
COLLISION PREVENTION ASSIST controller unit
7.5
225 Not used
226 Not used
227 Not used
228 Not used
229 Left front lamp unit 5
230 Electronic Stability Program control unit 5
231 Right front lamp unit 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 shutters actuator
7.5
235 Valid for engine 133:
Charge air cooler circulation pump
Charge air cooler circulation pump
7.5
236 SAM control unit 40
237 Electronic Stability Program control unit 40
238 Heated windshield 50
239 Wiper speed 1/2 relay 30
240A Starter circuit 50 relay 25
240B Circuit 15 relay (not latched) 25
241 Not used 7.5
Relay
J Fanfare horn relay
K Wiper speed 1/2 relay
L Windshield wiper ON/OFF relay
M Starter circuit 50 relay
N Circuit relay 87M
O ECO start/stop: Transmission cooling coolant circulation pump relay
P Backup relay (F58kP)
Q Circuit 15 relay (not latched)
R Circuit 15 relay
S Circuit 87 relay
T Heated windshield relay


Leave a Reply

Your email address will not be published. Required fields are marked *