Mercedes-Benz S-Class Fuse Box Diagram and Location (1999-2006)
The fourth-generation Mercedes-Benz S-Class (W220), produced from 1999 to 2006, redefined luxury with its sleek design, cutting-edge technology, and advanced comfort features. As a successor to the W140, this model introduced lightweight construction, improved aerodynamics, and a more modern cabin equipped with premium materials and innovative electronics.
In this article, you will find fuse box diagrams for the Mercedes-Benz S-Class, covering models S280, S320, S350, S400, S430, S500, S600, S55 AMG, and S65 AMG for the years 1999, 2000, 2001, 2002, 2003, 2004, 2005, and 2006. These diagrams provide essential insights into the fuse layout, helping vehicle owners, mechanics, and technicians locate and understand the function of each fuse and relay.
What’s Included:
Fuse Box Diagrams – Clear and detailed visuals to help identify fuses, relays, and circuit breakers.
Fuse Panel Locations – Step-by-step guidance on where to find the fuse panels inside the Mercedes-Benz S-Class.
Fuse Assignments – Comprehensive descriptions of each fuse and relay function for accurate diagnostics and troubleshooting.
Whether you’re searching for the fuse panel layout, replacing a blown fuse, or diagnosing an electrical issue, this guide is an essential resource. It ensures that your Mercedes-Benz S-Class’s electrical system remains functional and reliable for luxurious long-distance travel, high-performance driving, and executive comfort.
Keep your Mercedes-Benz S-Class (1999–2006) running at its best with this detailed fuse box, fuse panel, and relay guide!
The cigar lighter (power outlet) fuse in the Mercedes-Benz S-Class is:
fuse №86 (Front Cigar Lighter), located in the Instrument Panel Fuse Box.
Trailer recognition control module Special version: Automatic fire warning and extinguishing system
10
55
Trailer hitch socket (13-pin)
25
55
Special version: PAS and special signal system
30
56
Trailer recognition control module
30
56
Special version: Hydraulic window lift mechanism
40
57
Valid for remote trunk locking (HDFS): Trunk lid open relay Trunk lid closed relay Remote trunk closing hydraulic pump Special version: Not used
25
58
Keyless Go: Keyless Go control module Keyless Go left front door antenna Keyless Go left rear door antenna (W220) Keyless Go left rear antenna (C215) Keyless Go right front door antenna Keyless Go right rear door antenna (W220) Keyless Go right rear antenna (C215) Keyless Go left front door lift solenoid Keyless Go left rear door lift solenoid (W220) Keyless Go right front door lift solenoid Keyless Go right rear door lift solenoid (W220) Special version: Automatic fire warning and extinguishing system
7.5
59
Taxi version:Special vehicle multifunction control module (SVMCM) Special version: PAS MCS
30
60
up to 31.8.02: Not used as of 1.9.02: Navigation processor, VICS voltage supply separation point, Rear window antenna amplifier module
7,5
61
up to 31.8.02: Radio Rear window antenna amplifier module CD player with changer (in luggage compartment) COMAND operating, display and control module Telephone circuit connector 15C TV tuner Video decoder Relief relay, circuit 15 Navigation processor Traffic data recorder
15
61
as of 1.9.02: Hands-free system control unit Voice control system control unit Portable CTEL connector E-Call control unit Telephone transmitter/receiver, D2B Selection switch for telephone handset, front and rear (W220) CTEL interface CTEL compensator Telephone interface Telephone transmitter/receiver and TELE AID, D2B Telecommunications control unit (as of 1.9.03) Bluetooth module (as of 1.9.03) Rear telephone handset (as of 1.9.03 W220) E-net compensator (as of 1.9.03) Operating and display unit display in rear (as of 1.9.03) GPS box control unit (as of 1.6.04) Universal Portable CTEL Interface (UPCI [UHI]) control unit (as of 1.6.04) Emergency call system control unit (as of 1.6.04) Special version: Not used
7,5
62
Pneumatic system equipment with combined functions ATA inclination sensor (Special version)
20
63
up to 31.8.02: D2B interface for permanently installed telephone CTEl transmitter / receiver if emergency call system (TELE AID) fitted, TELE AID control module Voice control system control module if emergency call system (TELE AID) fitted, Portable CTEL connector Traffic data recorder
7,5
63
as of 1.9.02: Pneumatic pump for dynamic seat control
30
64
up to 31.8.02: COMAND operating, display and control module Rear window antenna amplifier module
7,5
64
as of 1.9.02: Left front seat adjustment control unit with memory
25
64
Special version: D2B interface for permanently installed telephone D2B interface for portable cellular telephone
5
65
Special version: D2B interface for portable cellular telephone
5
66
up to 31.8.02:Sound amplifier as of 1.9.02: Right front seat adjustment control unit with memory
25
66
Special version: Interior lamp with universal joint
7,5
67
Rear seats control module (not in the case of C215)
25
68
Rear air conditioning control module Rear AC refrigerant shutoff valve Delivery unit for rear heating system Circulation pump Left duovalve Right duovalve
15
69
Valid for rear air conditioning: Rear air conditioning control module
15
70
Tire pressure monitor control module
10
71
up to 31.8.02: Left front seat adjustment control module with memory
25
71
as of 1.9.02: Left front reversible emergency tensioning retractor
40
72
Rear control unit (C215) Left rear door control module (W220)
40
73
up to 31.8.02: Right front seat adjustment control module with memory
25
73
as of 1.9.02: Right front reversible emergency tensioning retractor
40
74
Rear control unit (C215) Right rear door control module (W220)
It is located in the engine compartment (left-side).
Fuse box diagram
Assignment of the fuses and relay in the Engine Compartment Fuse Box №1
№
Fused function
Amp
1
Wiper park heater relay Special version: Not used
40
2
High pressure and return pump relay
50
3
Steering wheel adjustment, horizontal: S relay 1, jacket tube longitudinal adjustment S relay 2, jacket tube longitudinal adjustment
15
4
Steering wheel adjustment, vertical: S relay 1, jacket tube, height adjustment S relay 2, jacket tube height adjustment
15
5
Wiper On and Off relay
40
6
up to 31.8.02: Heater booster switch as of 1.9.02: Not used
7,5
6
Special version: Hydraulic brake
5
7
Special version: 2nd three-phase alternator
7,5
8
Special version: Hydraulic brake
40
9
up to 31.8.03: Valid for air suspension: AIRmatic with ADS control module Valid for Active-Body-Control (ABC): ABC control module Special version: ADS, suspension control
30
9
as of 1.9.03: Valid for air suspension: AIRmatic with ADS control module Valid for Active-Body-Control (ABC): ABC control module
20
10
Special version: Windshield wiper water pump Windshield washer water pump Circuit 15 connector sleeve Ignition coils
15
11
up to 31.8.02: Front cigar lighter with ashtray illumination
15
11
as of 1.9.02: VICS power supply separation point X137
5
12
up to 31.8.02: Sensor for vehicle-sensitive seat belt lock as of 1.9.02: Not used Special version: Sensor for left side airbag and window airbag Sensor for right side airbag and window airbag
7,5
13
Left front door control module
40
14
Special version: Hydraulic brake
5
15
Special version: Hydraulic brake
40
16
Stop light switch
7,5
17
C215: Vehicle-sensitive seat belt lock sensor
7,5
18
Valid for D-net portable CTEL (D2B) (preinstallation): Portable CTEL connector Valid for MB D-net telephone (D2B): D2B interface for permanently installed telephone Valid for MB D-net telephone (D2B) with Tele Aid emergency call system: TELE AID control module Valid for MB D-net telephone (D2B) with E-call emergency call system: D2B-Interface fixed installation Frequency selector control module Emergency call control module
5
19
up to 31.8.02: Not used as of 1.9.02: Left front reversible emergency tensioning retractor (W220) Right front reversible emergency tensioning retractor (W220)
5
19
Special version: Instrument cluster
7,5
20
up to 31.8.02: Instrument cluster Datalink connector as of 1.9.02: Not used
5
20
Special version: Diagnostic cables connector sleeve: Instrument cluster Data link connector Separation point Compact wiring harness/diagnosis module II, cockpit Intermediate connector Diagnosis/taillamp wiring harness 16-pin Measuring connector Data link connector
7,5
21
up to 31.8.02: Instrument cluster as of 1.9.02: Not used
5
21
Special version: Instrument cluster
7,5
22
up to 31.8.02: Instrument cluster
5
22
as of 1.9.02: COMAND operating, display and control unit
15
22
as of 1.9.03; Japan version: COMAND operating, display and control unit Special version: Instrument cluster
7,5
23
up to 31.8.02: Climate control: AAC [KLA] control and operating module Circulation pump Left duovalve Right duovalve
10
23
as of 1.9.02 up to 31.8.03: TV tuner as of 1.9.02: Operating and display unit rear screen CD player with changer (in luggage compartment)
7,5
24
up to 31.8.02: Diagnostic connector
10
24
as of 1.9.02: Audio gateway control module
20
24
Special version: Diagnostic cables connector sleeve: Instrument cluster Data link connector Separation point Compact wiring harness/diagnosis module II, cockpit Intermediate connector Diagnosis/taillamp wiring harness 16-pin Measuring connector Data link connector
10
25
up to 31.8.02: Not used as of 1.9.02: Sound amplifier
25
25
Special version: Jacket tube module
10
26
up to 31.8.02: Upper control panel control module as of 1.9.02: Not used
10
27
Not used
–
Relay
A
Wiper park heater relay
B
Relay for C.15
C
Relay for C.15R
D
Steering column forward/back adjustment relay 1
E
Steering column forward/back adjustment relay 2
F
High pressure and return pump relay
G
Wiper position 1 and 2 relay
H
Wiper on and off relay
I
Steering column height adjustment relay 1
J
Steering column height adjustment relay 2
V
Special version: Brake booster hydraulic unit relay
W
Special version: Brake booster hydraulic unit safety relay
The fuse box is located in the engine compartment (right-side).
Fuse box diagram
Assignment of the fuses and relay in the Engine Compartment Fuse Box №2
№
Fused function
Amp
28
Fanfare horns relay
15
29
Motor electronics/chassis relay
20
29
Special version: Motor electronics/chassis relay
10
30
Motor electronics/chassis relay
20
31
Air pump relay
40
32
Air compressor relay
40
33
Heating systems recirculation unit
40
33
Special version: Electric suction-type fan
60
34
up to 31.8.02: Traction system control module: Control module for ESP, SPS and BAS (electronic stability program (ESP), speed sensitive power steering (SPS), brake assist (BAS))
5
34
as of 1.9.02: Traction system control module: Control module for ESP, SPS and BAS (electronic stability program (ESP), speed sensitive power steering (SPS), brake assist (BAS))
10
35
up to 31.8.02: Not used
–
35
as of 1.9.02: Valid for steering wheel heater: DC/DC converter control unit
15
35
Special version: Heating systems recirculation unit Blower regulator Blower motor
40
36
with Distronic: DTR control module
7,5
37
ETC [EGS] control unit Electronic selector lever module control unit VGS electric control unit
15
38
USA version:Luggage compartment interior button (KIT)
5
39
Right front door control module
40
40
With Xenon headlamps : Headlamp range adjustment control module
10
41
With stationary heater: STH radio remote control receiver STH heater unit (C215) STH heater unit or heater booster heater unit (W220)
20
42
Auxiliary air unit relay Special version: Transmission oil fan motor relay Engine oil fan unit: Temperature switch (100 °C)
20
43
Diesel engine only: CDI control module Starter relay, right front fuse and relay module Fuel pump relay (OM648 only)
25
44
OM613: CDI control module Intake manifold heating, right front fuse and relay module
7,5
44
OM628: CDI control module Starter relay, right front fuse and relay module Engine and AC electric suction fan with integrated control Charge fan circulation pump OM648: CDI control unit CDI relay AAC with integrated control additional fan motor
10
45
Not used
–
46
with Active-Body-Control (ABC): ABC control module with air suspension: AIRmatic with ADS control module
5
47
AAC multifunction sensor Control unit box blower motor Automatic air conditioning multifunction sensor (valid for right-hand drive) Coolant temperature switch (100 °C)
10
47
Special version: Multi-function sensor
7,5
48
M112/113; up to 31.8.02: Suction-type fan control module M137; up to 31.8.02: Engine and AC electric suction fan with integrated control Special version: Suction fan control module
7,5
49
Ignition coil (T1/1) up to (T1/8) Radio interference suppression capacitor
15
49
Special version: Suction fan control module
7,5
Relay
K
Engine electronics/chassis relay
L
Starter relay
M
Only valid for diesel: CDI relay
N
Secondary air pump relay
O
Air compressor relay
P
Fanfare horns relay
V
Special version: Brake booster hydraulic unit relay
W
Special version: Brake booster hydraulic unit safety relay
