2014-2018 Mercedes-Benz W222 and C217 Fuse Box Diagram (Category: S-Class, CL-Class)
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Fuse Box Diagram
Fuse Layout
Electrical Wiring Diagram
Box Location
Location
F32/3 - Engine compartment prefuse box
K40/6 - Left fuse and relay module
K40/8 - Engine fuse and relay module
F1/3 - Right A-pillar fuse box
F32/4 - Vehicle interior prefuse box
F33 - Rear prefuse box
K40/5 - Rear fuse and relay module
Fuse and relay box in engine compartment
Open the hood.
To open: release retaining clamps (1) and remove cover (2).
Use a dry cloth to remove any moisture from the fuse box.
Undo screws (3) on the fuse box.
Remove fuse box cover (4) forwards.
To close: check whether the seal is lying correctly in cover (4).
Insert cover (4) at the rear of the fuse box into the retainer.
Fold down cover (4) of the fuse box and tighten screws (3).
Insert cover (2) and secure with retaining clamps (1).
Close the hood.
No.
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
Fused function
Hybrid: Vacuum pump
Connector sleeve, circuit 87/2
Connector sleeve, circuit 87/2
Connector sleeve, circuit 87M4
Connector sleeve, circuit 87M3
Valid for transmission 722.9: Transmission oil auxiliary pump control unit
Wiper park position heater
Valid for engine 277, 279: Starter/air pump electrical connection
Valid for SAE dynamic LED headlamp for right-hand traffic or Dynamic LED headlamp::
Left front lamp unit
Right front lamp unit
Valid without SAE dynamic LED headlamp for right-hand traffic or Dynamic LED headlamp::
Right front lamp unit
Wiper motor
Valid for code SAE dynamic LED headlamp for right-hand traffic or Dynamic LED headlamp::
Left front lamp unit
Right front lamp unit
Valid without SAE dynamic LED headlamp for right-hand traffic or Dynamic LED headlamp::
Left front lamp unit
Starter
Engine fuse and relay module
Spare
AIRmatic compressor
Left fanfare horn
Right fanfare horn
Hybrid: Vacuum pump relay
Spare
Hybrid: Electronic Stability Program control unit
Circuit 87/C2 connector sleeve
Circuit 87/C1 connector sleeve
Electronic Stability Program control unit
Hybrid: HYBRID relay
Night View Assist control unit
Hybrid: Vehicle interior and engine compartment electrical connector
Front SAM control unit
Powertrain control uni
A
40
15
20
15
15
15
25
60
20
30
20
30
5
40
15
5
5
15
7.5
5
5
5
5
5
5
127
128
129A
129B
Valid for diesel engine: CDI control unit
Valid for gasoline engine: ME-SFI [ME] control unit
Spare
Exterior lights switch
Hybrid: Starter circuit 50 relay
Valid except Hybrid: Starter circuit 50 relay
5
30
30
Relay
G
H
I
J
K
L
M
N
O
P
Q
R
Engine compartment circuit 15 relay
Starter circuit 50 relay
Brake vacuum pump relay
Hybrid: HYBRID relay
Transmission oil pump relay
Horn relay
Wiper park position heater relay
Circuit 87M relay
Valid except Hybrid: Starter circuit 15 relay
Secondary air injection relay
Hybrid: Vacuum pump relay
AIRmatic relay
AdChoices
Electrical Wiring Diagram
Mercedes Benz Fuse Chart
Electrical Fuses
Control Circuit Diagram
The Instrument Panel Fuse Panel
No.
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
Fused function:
Front SAM control unit
Front SAM control unit
Alarm siren
W222: Driver seat heater control unit
Diagnostic connector
Electronic ignition lock control unit
Analog clock
Climate control control unit
Instrument cluster
Front climate control operating unit
Steering column tube module control unit
Spare
Spare
Electronic Stability Program control unit
Spare
Spare
Spare
Japanese version: Dedicated Short-Range Communications control unit
Supplemental restraint system control unit
Weight sensing system (WSS) control unit
219
Front passenger seat occupied recognition and ACSR
220 MAGIC VISION CONTROL relay
Relay
D MAGIC VISION CONTROL relay
E Backup relay
F Relay, circuit 15R
Fuse box in the front-passenger footwell
A
40
40
5
30
5
7.5
5
20
7.5
5
10
25
5
5
5
15
Open the front-passenger door.
Fold cover (1) down and remove it.
1. Circuit 30 "E1" connection
2. Circuit 30g "E2" connection
No.
301 Mirror taximeter
302 Right front door control unit
W222: Left rear door control unit
303
C217, A217: Rear control unit
W222: Right rear door control unit
304
C217, A217: Rear control unit
305 Driver seat control unit
306 Front passenger seat control unit
W222: Intelligent servo module for DIRECT SELECT
307
C217, A217: Driver seat heater control unit
308 Front passenger seat heater control unit
Emergency call system control unit
309 Telematics services communications module
HERMES control unit
Fused function
A
5
30
30
30
30
30
20
30
30
5
310
311
312
313
314
Stationary heater control unit
Rear blower motor
Overhead control panel control unit
Hybrid and Hybrid Plus: Power electronics control unit
A217: Antitheft alarm system (designation in coordination)
Powertrain control unit
315 Valid for gasoline engine: ME-SFI control unit
Valid for engine 642, 651: CDI control unit
316 Spare
W222: Panoramic sliding sunroof control module
317
C217, A217: MAGIC SKY CONTROL control unit
318 Audio/COMAND display
Panoramic sliding sunroof control module
319
C217, A217: Panoramic roof roller sun blind control module
Active Body Control control unit
320
AIRmatic control unit (Valid except Active Body Control)
321 C217, A217: Intelligent servo module for DIRECT SELECT
322 COMAND controller unit
323 Supplemental Restraint System control unit
MF1/1 Japan version: Dedicated Short-Range Communications control unit
Mono multifunction camera
MF1/2
Stereo multifunction camera
Rain/light sensor with additional functions
MF1/3
Overhead control panel control unit
MF1/4 Driver seat control unit
MF1/5 Front passenger seat control unit
MF1/6 Steering column tube module control unit
MF2/1 Perfume atomizer generator
Audio/COMAND control panel
MF2/2
Touchpad
MF2/3 Electronic Stability Program control unit
MF2/4 Heads-up display
MF2/5 Hybrid and Hybrid Plus: Electrical refrigerant compressor
MF2/6 Spare
MF3/1 Front SAM control unit
MF3/2 Radar sensors control unit
MF3/3 COMAND fan motor
Driver side instrument panel button group
MF3/4
Center instrument panel button group
MF3/5 Rear air conditioning operating unit
MF3/6 as of 01.06.2016: Antenna changeover switch for telephone and stationary heater
Fuse and relay box in rear
Open the trunk lid.
Prise open cover (1) with a flat object at the top right and top left-hand side.
Open cover (1) downwards in the direction of the arrow.
25
10
10
10
7.5
10
30
15
30
15
20
15
7.5
7.5
7.5
7.5
7.5
7.5
7.5
5
5
5
5
5
5
5
5
5
5
5
1. Circuit 30 "E1" connection
2. Circuit 30g "E2" connection
No.
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
Fused function
Parking system control unit (Active Parking Assist or code 360-degree camera)
Trunk lid control control unit
Rear entertainment controller unit
Spare
Armrest heater control unit
Sound system amplifier control unit
Left front door tweeter control unit
Right front door tweeter control unit
Spare
Spare
Tuner unit
360° camera control unit
Reversing camera
Camera cover control unit
Tire pressure monitor control unit
Rear seat heater control unit
Left rear display
Right rear display
Rear cellular telephone system antenna amplifier/compensator
Rear mobile phone cradle
Rear mobile phone contact plate
Telephone module with Bluetooth® (SAP profile)
Spare
Spare
Trailer recognition control unit
Spare
Spare
DC/AC converter control unit
Multicontour seat pneumatic pump
W222: Right rear door control unit
Spare
Rear SAM control unit
Spare
Bass speaker amplifier
Armrest heater control unit
Trailer recognition control unit
A
10
5
7.5
7.5
7.5
5
5
5
5
7.5
10
7.5
20
30
30
30
40
30
20
15
429 Rear cup holder
Cigarette lighter with ashtray illumination, rear
430 Cigarette lighter with rear center console illumination
Left rear center console socket 12V (ashtray package/smoker package)
431 Rear backrest refrigerator box
432 Rear SAM control unit
433 AdBlue® control unit
10
434 AdBlue® control unit
435 AdBlue® control unit
436 Rear cup holder
437 Spare
438 C217 with engine 157: Right exhaust flap actuator motor
439 C217 with engine 157: Left exhaust flap actuator motor
440 Spare
441 Spare
442 Spare
443 Spare
444 Spare
445 Stationary heater radio remote control receiver
446 FM 1, AM, CL [ZV] and KEYLESS-GO antenna amplifier
447 Hybrid: Battery management system control unit
448 Spare
449 Spare
450 Spare
451 Trailer socket
Left rear bumper radar sensor
452 Right rear bumper radar sensor
Center rear bumper radar sensor
Left front bumper radar sensor
453 Right front bumper radar sensor
COLLISION PREVENTION ASSIST controller unit
15
®
454 AdBlue control unit
Fuel system control unit
455 Fully integrated transmission control controller unit
456 Spare
457 Valid for lithium-ion battery: Starter battery capacitor
458 Spare
459 Spare
460 Front cigarette lighter with ashtray illumination
Right rear center console socket 12V
461 Socket 12V
DC/AC converter control unit
462 Luggage compartment socket
463 Spare
464 Trailer recognition control unit
465 Electric parking brake control unit
466 Left front door control unit
467 KEYLESS-GO control unit
468 Electric parking brake control unit
469 Fuel system control unit
Left rear seat heater control unit
470
Rear seat heater control unit
471 Right rear seat heater control unit
472 C217, A217: Rear control unit
473 Trailer recognition control unit
475 Sound system amplifier control unit
476 Sound system amplifier control unit
Active belt buckle control unit
477
C217, A217: Rear control unit
15
15
10
25
20
20
7.5
7.5
5
5
7.5
15
5
5
5
15
7.5
15
15
15
20
30
30
10
30
25
30
30
30
20
40
40
40
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
Left rear seat control unit
Active belt buckle control unit
Right rear seat control unit
Left front reversible emergency tensioning retractor
W222: MAGIC SKY CONTROL control unit
C217, A217: MAGIC SKY CONTROL control unit
Right front reversible emergency tensioning retractor
Right rear seat control unit
Left rear seat control unit
Active belt buckle control unit
Hybrid:
Battery management system control unit
Power electronics control unit
Electric parking brake control unit
Rear SAM control unit
Front long-range radar sensor
Multicontour seat pneumatic pump
Trunk lid control control unit
Right front reversible emergency tensioning retractor
Spare
Rear SAM control unit
Rear window heater
Left front reversible emergency tensioning retractor
30
40
30
5
5
7.5
5
7.5
5
10
5
5
5
5
40
40
40
40
40
Relay
S
T
U
V
W
X
Y
Vehicle interior circuit 15 relay
Rear window heater relay
2nd seat row cupholder and sockets relay
AdBlue® relay
Circuit 15R relay
1 st seat row/trunk refrigerator box and sockets relay
Spare relay
AdChoices
Electrical Wiring Diagram
Control Circuit Diagram
Mercedes Benz Fuse Chart
Electrical Circuit
Engine compartment prefuse box
View from below
View from above
1 - Connection, circuit 30 "B1"
2 - Connection, circuit 30 unlatched "B2"
No.
Fused function
Hybrid: Electrical machine
M3
Valid except Hybrid: Alternator
Hybrid: Electrical machine
M1
Valid except Hybrid: Starter
MR5 Electrical power steering control unit
MR2 Fan motor
M4 Hybrid: Fully integrated transmission control controller unit
I1 Spare
M2 Valid for diesel engine: Glow output stage
MR1 Motor fuse and relay module
MR3 Spare
MR4 Valid for engine 277, 279: Fan motor
I2 Spare
Vehicle interior prefuse box
A
500
500
100
100
100
150
60
150
-
F32/4k2 - Quiescent current cutout relay
No.
I7 Right A-pillar fuse box
I2 Left fuse and relay module
C2 Spare
I8 Spare
I9 Spare
I3 No-load current shutoff relay connection
C1 Blower regulator
I1 Electronic Stability Program control unit
I4 Spare
I6 Rear fuse and relay module
I5 Right A-pillar fuse box
Rear prefuse box
Fused function
A
125
125
40
40
60
60
F33k1 - Decoupling relay
F33k2 - ECO start/stop function additional battery relay
No.
Fused function
I3 Spare
I2 Windshield heater control unit
I7 Hybrid: High-voltage disconnect device
I4 Rear fuse and relay module
I6 ECO start/stop function additional battery
ECO start/stop function additional battery
I7 Front SAM control unit
Electronic ignition lock control unit
I1 Spare
I11 Spare
I7 Front SAM control unit
I8 ECO start/stop function additional battery relay connection
I5 Hybrid: High-voltage pyrofuse triggered by Supplemental Restraint System control unit
I9 Decoupling relay connection
Home
A
125
7.5
150
200
10
10
-
-