Mercedes-Benz B-Class W242, W246 (2012-2018) – Fuse Box Diagrams

No 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 thirty 24 Right front door control unit thirty 25 SAM control unit thirty 26 Additional ECO start / stop battery connector sleeve 10 27 Engine compartment fuse and relay module thirty 28 Interior sound generator control unit;

Electric Drive (W242):

Temperature management control unit.

5 29 until 02/11/2014:

Trailer socket;

As of November 3, 2014:

Trailer recognition control unit.

15 thirty Trailer recognition control unit 5 31 4MATIC:

Controller all-wheel drive

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 Electric Drive (W242):

Powertrain control unit

5 41 Panoramic sliding sunroof control module thirty 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 adjusting the lumbar support for the passenger seat.

7.5 47 Navigation module 7.5 Adaptive damping system control unit 25 48 Reserve – 49 Control unit for Drive Kit for iPhone ^® 7.5 COMAND fan motor 5 50 Reserve – 51 Reserve – 52 Electric Drive (W242):

Latch actuator motor parking space

thirty 53 Reserve – 54 Reserve – 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

thirty Special vehicle:

Multifunctional control unit vehicle special purpose

7.5 Electric Drive (W242):

Parking Latch Actuator Motor Circuit 87 Relay (F34kG)

5 58 Emergency vehicle fuse box thirty 59 Front passenger seat control, uni thirty 60 Driver seat control unit thirty 61 Sound system amplifier control unit 40 62 Valid for gearbox 711:

Electric steering lock

twenty 63 Fuel system control unit 25 Electric Drive (W242):

Drive unit control gate

5 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 Special purpose vehicle interface 5 67 Reserve – 68 Reserve – 69 Reserve – 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 thirty 74 Electric parking brake control unit thirty 75 Trailer recognition control unit twenty Electric Drive (W242):

Battery management system control unit (N82 / 2)

5 76 Trailer recognition control unit (N28 / 1) 25 Electric Drive (W242):

Parking pawl control unit

5 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 protection control unit 5 86 FM, AM and CL antenna amplifier [ZV];

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;

Lighting switch leg recesses;

Electric Drive (W242):

Battery management system control unit.

5 92 Fuel system control unit;

Electric Drive (W242):

Gate drive unit control unit.

5 93 Electric parking brake control unit 5 94 Supplementary restraint system control unit 7.5 95 Front passenger seat occupancy recognition i

ACSR weight detection 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:

Controller all-wheel drive

10 102 Stationary heater remote control receiver;

Electric Drive (W242):

Powertrain control unit;

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 unit;

Multimedia connection unit.

5 105 Digital Audio Broadcasting control unit;

Satellite digital audio radio (SDAR) control unit.

5 Tuner module 7.5 106 Multifunction 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 twenty 110 COMAND radio control;

Engine sound driver.

thirty Relay AND Circuit 15 relay B Rear window wiper relay C. Relay circuit 15R2 D Heated rear window relay E. Circuit 15R1 of the relay F. Relay circuit 30g G. Electric Drive (W242):

Circuit 87 of Latch Actuator Motor Relay parking space