2013-2017 Mercedes-Benz GLA (X156) Fuse Box Diagram

Fuse box in the front-passenger foot-well

Fuses Specifications
No. A Description
21 150 Diesel: PTC heater booster
22 200 Additional battery relay for ECO start/stop function
23 30 Left front door control unit
24 30 Right front door control unit
25 30 SAM control unit
26 10 ECO start/stop additional battery connector sleeve
27 30 Engine compartment fuse and relay module
28 5 Vehicle interior sound generator control unit
29 15 →02.11.2014: Trailer socket
03.11.2014→: Trailer recognition control unit
30 5 Trailer recognition control unit
31 5 4MATIC: All-wheel drive control unit
32 5 Steering column tube module control unit
33 5 Audio/COMAND control panel
34 7,5 ACC control and operating unit
35 30 Rear window heater
36 7,5 Driver seat control unit
Driver seat lumbar support adjustment control unit
37 7,5 Audio/COMAND display
38 7,5 Supplemental Restraint System control unit
39 10 Overhead control panel control unit
40 15 OM651 (Emissions standard EU6): Powertrain control unit
41 30 Panoramic sliding sunroof control module
42 5 Radio (Audio 5 USB, Audio 20 CD, Audio 20 CD with CD changer)
COMAND controller unit
25 Radio (Radio 20, Audio 20 USB)
43 5 Parking system control unit
44 40 Left front reversible emergency tensioning retractor
45 40 Right front reversible emergency tensioning retractor
46 7,5 Front passenger seat control unit
Front passenger seat lumbar support adjustment control unit
47 7,5 Navigation module
25 Adaptive damping system control unit
48 - -
49 7,5 Control unit for Drive Kit for iPhone®
5 COMAND fan motor
50 5 Camera cover control unit
51 - -
52 - -
53 - -
54 - -
55 5 Telematics services communications module
KEYLESS-GO control unit
56 10 Steering column tube module control unit
57 30 Lane Keeping Assist: Special-purpose vehicle multifunction control unit
7.5 Special vehicle: Special-purpose vehicle multifunction control unit
58 30 Emergency vehicle fuse box
59 30 Front passenger seat control uni
60 30 Driver seat control unit
61 40 Sound system amplifier control unit
62 20 Valid for transmission 711: Electric steering lock control unit
63 25 Fuel system control unit
64 1 Electronic Toll Collection control unit
Dedicated Short-Range Communications control unit
65 5 Glove compartment lamp
66 15 Emergency vehicle fuse box
67 - -
68 - -
69 - -
70 25 Rear center console socket
71 25 Luggage compartment socket
72 25 Front cigarette lighter with ashtray illumination
Vehicle interior power outlet 
73 30 Electric parking brake control unit
74 30 Electric parking brake control unit
75 20 Trailer recognition control unit
76 25 Trailer recognition control unit
77 25 Trailer recognition control unit
78 40 Trunk lid/liftgate control control unit
Emergency vehicle fuse box
79 40 SAM control unit
80 40 SAM control unit
81 40 Blower regulator
82 10 Overhead control panel control unit
83 7,5 Electronic ignition lock control unit
84 5 Upper control panel control unit
85 5 ATA [EDW]/tow-away protection/interior protection control unit
86 5 FM, AM and CL [ZV] antenna amplifier
01.06.2016→: Cellular telephone system antenna amplifier / compensator
87 10 Diagnostic connector
88 10 Instrument cluster
89 5 Exterior lights switch
90 5 Left rear bumper intelligent radar sensor
Intelligent radar sensor for right rear bumper
91 5 Pedal operation monitor switch
Footwell illumination switch
92 5 Fuel system control unit
93 5 Electric parking brake control unit
94 7,5 Supplemental Restraint System control unit
95 7,5 Front passenger seat occupied recognition and ACSR
Weight sensing system (WSS) control unit
96 15 Tailgate wiper motor
97 5 Mobile phone electrical connector
98 5 SAM control unit
99 5 Tire pressure monitor control unit
100 5 M133: DIRECT SELECT INTERFACE
101 10 4MATIC: All-wheel drive control unit
102 5 Stationary heater radio remote control receiver
AMG (01.09.2015→): Transmission mode control unit
01.06.2016→: Antenna changeover switch for telephone and stationary heater
103 5 Emergency call system control unit
Telematics services communications module
HERMES control unit
104 5 Media interface control unit
Multimedia connection unit
105 5 Digital Audio Broadcasting control unit
Satellite digital audio radio (SDAR) control unit
7,5 Tuner unit
106 5 Multifunction camera
107 5 Digital TV tuner
108 5 →31.05.2016: Reversing camera
7,5 01.06.2016→: Reversing camera
109 20 Charging socket electrical connector
110 30 Radio
COMAND controller unit
Engine sound control unit
Relay
A Circuit 15
B Rear window wiper
C Circuit 15R2
D Heated rear window
E Circuit 15R1
F Circuit 30g
G -

Gasoline:

Diesel:

Front electrical prefuse box

Fuses Specifications
No. A Description
1 300 Alternator
2 200 Vehicle interior fuse box
250 Diesel: Vehicle interior fuse box
3 100 Electrical power steering control unit
4 40 SAM control unit
5 80 Fan motor
6 70 OM607: Fuel preheating control unit
7 125 OM607 (Emissions standard EU5): DPF regeneration heater booster control unit
8 100 OM607, OM651: Glow output stage
Relay
k1 Decoupling

Fuse box in the engine compartment

Fuses Specifications
No. A Description
201 5 Alarm siren
202 20 Stationary heater control unit
203 15 LED headlamp: Right front lamp unit
204 25 Electronic Stability Program control unit
205 15 Left fanfare horn
Right fanfare horn
206 5 OM651: CDI control unit
OM607: Powertrain control unit
207 5 Diesel: Circuit relay87M
208 7.5 M133, OM607: Circuit 87 relay
209 15 LED headlamp: Left front lamp unit
210 5 Heated windshield relay
211 - -
212 15 M133, M270: Connector sleeve, circuit 87M3
OM651:
   Vent line heater element
   Coolant thermostat heating element
   Exhaust gas recirculation cooler bypass switchover valve
OM607 (Emissions standard EU5):
   Oxygen sensor upstream of catalytic converter
   Boost pressure positioner
OM607 (Emissions standard EU6): Oxygen sensor upstream of catalytic converter
OM607: CDI control unit
213 15 M133, M270, OM651: Connector sleeve, circuit 87 M2e
OM607 (Emissions standard EU5):
   Camshaft Hall sensor
   CDI control unit
   Quantity control valve
OM607 (Emissions standard EU6):
   Oxygen sensor downstream of catalytic converter
   CDI control unit
214 10 M133, M270, OM651: Connector sleeve, circuit 87 M4e
215 20 Gasoline:
   Cylinder 1 ignition coil
   Cylinder 2 ignition coil
   Cylinder 3 ignition coil
   Cylinder 4 ignition coil
OM651: Quantity control valve
OM607:
   CDI control unit
   Boost pressure positioner
   Quantity control valve
216 5 Gasoline: ME-SFI control unit
OM607: Powertrain control unit
217 25 Valid with transmission 724: Dual clutch transmission fully integrated transmission control unit
218 5 Electronic Stability Program control unit
219 - -
220 10 Transmission cooling coolant circulation pump
221 - -
222 - -
223 - -
224 7.5 DISTRONIC electric controller unit
COLLISION PREVENTION ASSIST controller unit
225 - -
226 - -
227 - -
228 - -
229 5 Left front lamp unit
230 5 Electronic Stability Program control unit
231 5 Right front lamp unit
232 15 Headlamp control unit
233 - -
234 5 OM607: Powertrain control unit
235 7.5 OM607:
   Fan motor
   Radiator shutters actuator
7.5 M133:
  
Charge air cooler circulation pump
   Charge air cooler circulation pump
236 40 SAM control unit
237 40 Electronic Stability Program control unit
238 50 Heated windshield
239 30 Wiper speed 1/2 relay
240A 25 Starter circuit 50 relay
240B 25 Circuit 15 relay (not latched)
241 7.5 -
Relay
J Fanfare horn
K Wiper speed 1/2 relay
L Windshield wiper ON/OFF
M Starter circuit 50
N Circuit87M
O ECO start/stop: Transmission cooling coolant circulation pump relay
P Backup
Q Circuit 15 (not latched)
R Circuit 15
S Circuit 87
T Heated windshield