Fuses and relays Mercedes-Benz S-Class (W221 / C216; 2009 - 2013)

In 2009, the Mercedes-Benz S-Class W221 underwent restyling. His model year presentation took place in April in Stuttgart. In this material, we will analyze in detail the fuse diagrams of the fifth generation Mercedes S-class (W221 / C216: S350, S450, S500, S65 AMG, S63) in the restyling of 2009, 2010, 2011, 2012, 2013 model year.

General view of the car.
Here you will find the locations and photos of the mounting blocks. Separately, we note the fuses responsible for the cigarette lighter and fuel pump.

In the trunk

The location of the fuse box in the luggage compartment of the car
Access is from the passenger compartment. The armrest needs to be folded back. Then remove the trim and the plastic cover.


Access example.


General form.

Diagram
No. Relay assignment
M Terminal 15 (2) / spare 1 (changeover relay)
N Terminal 15R
O Sockets
P Heated rear window
Q Engines 156, 157, 275, 278, 629:  circulation pump 
S 400 Hybrid:  Relay for circulation pump 2 for power electronics
R Cigarette lighter
S Engines 642, except 642.8: fuel pump relay
Engines 642.8, 651 from 1.6.11:  Refrigerant compressor magnetic clutch
S 400 Hybrid : Relay for circulation pump 1 for power electronics
No. A Purpose of fuses
115 50 Heated rear window
116 10 Engine 157, 275, 278:  Charge air cooler circulation pump
Engine 156: Engine  Oil Cooler Circulation Pump
S 400 Hybrid:  Circulation pump 2 power electronics
117 15 Rear cigarette lighter fuse
118 30 Engine 629, 642:  Fuel module (fuse for Mercedes W221 / C216 fuel pump)
  15 S 400 Hybrid:   Circulation pump 1 for power electronics
  15 Engine 642.8, 651 from 1.6.11:  Refrigerant compressor with electromagnetic clutch
119 7.5 Front center control panel
120 - Reserve
121 10 Audio tuner module
122 7.5 COMAND module
123 40 W221:  Front right reversible seat belt pretensioner
124 40 W221:  Front left reversible seat belt pretensioner
125 5 Voice control module (SBS)
126 25 Overhead control panel
127 30 Seat back pump
Pneumatic pump for multicontour seat
Pneumatic pump for dynamic seat adjustment
128 25 Engine 156, 157, 272, 273, 275, 276, 278, 642:  Fuel pump control unit
129 25 UHI (Universal Cell Phone Interface) Module
130 30 Electric parking brake module
131 7.5 Antenna amplifier module above rear window
133 15 Trailer recognition module
  5 Rear View Camera
134 15 Luggage compartment socket
135 7.5 Radar Sensor Module (SGR)
PTS module (PARKTRONIC)
136 7.5 Engine 642.8:  AdBlue ® control unit
137 7.5 From 1.9.10:  Rear view camera
138 5 Navigation processor (Taiwan, up to 31.8.10)
Emergency call system module
TV / tuner plug connection (Japan)
139 15 Refrigerated box in the rear seat back
140 15 Cigarette lighter plug with ashtray lighting, rear 
115 V socket
141 5 Rear view camera control unit 
Rear view camera power supply module
142 7.5 PTS module (PARKTRONIC)
Radar Sensor Module (SGR)
Video sensors and radar sensors module (from 1.9.10)
143 25 Rear seat module
144 25
145 20 AHV trailer coupling, 13-pin
146 25 Trailer recognition system
147 - Reserve
148 25 End sleeve for panoramic sliding sunroof terminal 30
149 25 Panoramic sliding sunroof control module
150 7.5 Combo TV tuner (analog / digital) 
TV / tuner plug connection (Japan)
151 20 Trailer recognition system
152 25 DC / AC converter

In the passenger compartment

There are three fuse boxes.
The location of the main fuse box in the passenger compartment
The first block is located on the driver's side at the left end of the instrument panel.

Diagram
No. A Appointment
92 40 Front left seat module
93 7.5 Passive safety systems module 
Passenger Weight System (WSS) Module (USA)
94 5 Multifunctional camera
95 - Spare
96 5 RDK (Tire Pressure Monitoring System)
97 7.5 DVD-player
98 - Spare
99 7.5 COMAND display
SPLITVIEW display system
10 5 Multimedia interface control unit
101 10 W221: Rear display left and right
102 40 Front Right Seat Module
103 7.5 ESP
104 40 Audio tuner module
105 - Stock
106 5 Navigation processor
Electronic Toll System (ETC) Module (Japan)
TV / tuner plug connection (South Korea)
107 5 SDAR module
Digital sound broadcasting module
High Definition Tuner Module
108 5 Rear air conditioner module
109 15 Rear air conditioning fan electronic regulator
110 7.5    Control unit for rear left and right seat with multicontour backrest
111 5 Rear control panel HBF
112 5 S 400 Hybrid:  Front SAM control unit with fuse and relay module
113 5 S 400 Hybrid: DC / DC converter control unit

The location of the main fuse box in the passenger compartment
The second fuse block is located on the passenger side at the right end of the instrument panel.

Diagram
No. A Purpose of fuses
70 40 C216: Right door module
W221: Front right door module
71 15 KEYLESS-GO
72 7.5 S 400 Hybrid:  Pyrotechnic disconnecting element
73 5 COMAND (Japan)
emergency call systems
74 30 HDS (trunk lid remote closing)
75 10 S 400 Hybrid:
   Battery system block
   Power electronics control unit
76 - Engine 642.8: AdBlue supply relay
15 S 400 Hybrid: Vacuum pump relay (+)
77 50 Acoustic amplifier
78 25 S 65 AMG with engine 275:  Relay for additional blower
Engine 642.8: AdBlue supply relay
15 Engine 157, 278; S 400 Hybrid, CL 63 AMG: Charge air cooler circulation pump
79 7.5 Alarm siren
80 40 C216: Left door module
W221: Front left door  module
81 30 C216 Rear passenger compartment system module
40 W221: Rear left door module
82 30 C216: Rear passenger compartment system module
40 W221: Rear right door module
83 30 Servo drive module for automatic transmission system "DIRECT SELECT"
84 20 Digital sound processor
85 10 For AMG vehicles: Illuminated door sill guards
86-89 - Spare
90 20 C216: Heater STH (auxiliary heating system)
W221:  Heater STH (autonomous) or ZUH (additional)
91 5 Radio remote control receiving unit for autonomous heater STH
S 400 Hybrid: Front SAM control unit with fuse and relay module
Diagram of the elements of the power cabin block
No. A Appointment
2 400 Generator (G2)
3 150 Electro-hydraulic power steering
Engine 629, 642: End of glow plug glow time
4 - Passenger compartment fuse box F32 / 4
5 100 Electric suction fan for engine and air conditioning with integrated regulator
6 150 Front SAM control unit with fuse and relay module
7 40 ESP 
S 400 Hybrid : Brake Energy Recovery Systems
8 25 ESP
S 400 Hybrid : Brake Energy Recovery Systems
9 25 Front SAM control unit with fuse and relay module
10 - Stock
F32 / 4k2 - Off-load current cut-off relay

In the engine compartment

Location of the fuse box in the engine compartment of the car
There are two blocks in the engine compartment. Main #N10/1 is located on the left behind the protective cover.


Photo - example of fuse box #N10/1.

Diagram
No. Relay
A Air pump
B Air suspension compressor
C Terminal 87 Engine
D Terminal 15
E Relay electr. chassis terminal 87 circuit
F Horn relay
G Terminal 15R relay
H Relay el. terminal 50 circuits, starter
J Relay el. terminal 15 circuits, starter
K Heated wiper blades
No. A Circuit breakers
20 10 Engine 629, 642, 651:  CDI control unit
Engine 156, 157, 272, 273, 275, 276, 278:  ME control unit
21 20 Engine 156, 157, 272, 273, 275, 276, 278:  Electr. circuit terminal 87 M1i 
Engine 629, 642:
   CDI systems 
   Fuel pump relay Mercedes S-Class W221 / C216
Engine 651:  Metering valve
22 15 Engine 156, 157, 272, 273, 276, 278:  Electr. terminal 87 circuit
23 20 Engine 156, 157, 272, 273, 275, 276, 278, 629, 642:  Electr. terminal 87 circuit
Engine 156, 157, 272, 273, 276, 278:  Electr. circuit terminal 87 M2e 
Engine 275:  Cable lug electr. circuit terminal 87 M2i
Engine 651:   SAM with rear fuse and relay module
24 25 Engine 157, 272, 273, 276, 278:  Electr. circuit terminal 87M1e
Engine 642:  CDI control unit
25 7.5 Instrument cluster
26 10 Front left headlamp
27 10 Front right headlamp
28 7.5 Engine 275:
   EGS module
  Automatic gearbox integrated module (VGS)
29 5 Rear SAM control unit with fuse and relay module
30 7.5 Engine 629, 642, 651: CDI system  module
Engine 156, 157, 272, 273, 275, 276, 278:
   ME control module
   Fuel pump module
31 5 S 400 Hybrid:  Electric A / C Compressor
32 15 Gearbox auxiliary oil pump control unit
33 5 Since 1.9.10:  ESP unit
S 400 Hybrid:
   Battery control unit
   DC voltage converter control unit
   Power electronics control unit
34 5 S 400 Hybrid:  Brake Energy Regeneration Control Unit
35 5 Electric parking brake control unit
36 10 Diagnostic connector
37 7.5 EZS
38 7.5 Central interface control unit
39 7.5 Instrument cluster
40 7.5 Upper control panel
41 30 Slave wiper Engine
42 30 Main electric Engine of the cleaner
43 15 Front cigarette lighter fuse Mercedes-Benz S-Class W221 / C216
44 - Reserve
45 5 S 400 Hybrid:
   Circulation pump 1 power electronics
46 15 ABC (Active Body Level Control) 
AIRMATIC with ADS
47 15 Electric steering column adjustment Engine up and down
48 15 Electric steering column adjustment Engine forwards and backwards
49 10 Steering column electronics
50 15 KLA control unit
51 5 COMAND display
SPLITVIEW display system
52a 15    C216 Left and right horn
52b 15   W221, C216:  Left and right horn
53 - Stock
54 40 Air recirculation unit for climate system
55 60 Gasoline Engines:  Electric Air Pump
56 40 AIRmatic compressor block
57 30 Heated wiper blades
60 5 Electro-hydraulic power steering
61 7.5 passive safety system
62 5 night vision systems
63 15 With engine 629 and engine 642 as of 1.9.08:  Fuel filter condensate sensor with heating element
64 10 NECK-PRO headrest electromagnet coil on the backrest of the driver's seat and right front seat
65 15 Valid from 1.6.09:  12 volt plug connection in the glove compartment
66   DTR control module (Distronic)


On the right side of the engine compartment, near the battery, there is a module consisting of high-power fuse-links.

Power Engine block diagram
No. A Description
3 150 SAM with rear fuse and relay module
4 150 Relay for ECO Start-Stop function
S 400 Hybrid: DC / DC Converter Module 
Heated windshield
5 125 Multifunctional vehicle control unit (MSS)
  40 S 400 Hybrid : Vacuum pump
6 80 Passenger compartment fuse box
7 150 Multifunctional Special Vehicle Control Module (MSS) 
Engine 629, 642, 651: PTC auxiliary heater
8 80 Front SAM module with fuse and relay module
9 80 Passenger compartment fuse box, left
10 150 SAM with fuse and relay module in trunk
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