Fuses and relays Mercedes-Benz S-class (W220, 1998 - 2005)

The fourth generation Mercedes-Benz S-Class was unveiled at the 1998 Paris Motor Show. The creator of the model was Steve Mattin. In 2002, the car went through restyling. In this material, we will analyze in detail the fuse diagrams of the fourth generation Mercedes S-class (W220: S280, S320, S350, S430, S500, S600, S55 AMG, S63 AMG, S65 AMG, S320 CDI, S400 CDI) 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005 release.

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

In the engine compartment

location of main fuse box under the hood
The main
 mounting block is located on the driver's side.


General view of the main unit.

Diagram
Models after 2002
Models up to 2002
No. Relay description
R1 Wiper anti-icing relay
R2 Terminal 15 relay
R3 Terminal 15R relay
R4 steering column adjustment 1/2, horizontal
R5
R6 high pressure headlamp washer
R7 Wiper high / low relay
R8 wiper
R9 steering column adjustment 1/2, vertical
R10
No. Fuse decoding A
1 Wiper anti-icing relay 40
2 High pressure headlamp washer relay 50
3 Steering column adjustment, horizontal 15
4 Steering column adjustment, vertical 15
5 Wiper relay 40
6 Heater switch (up to 2002) 7.5
Not used (after 2002) -
7   -
8   -
9 Air suspension 30
ADS control unit
Body control unit
10 Windshield washer pump 15
11 Front cigarette lighter w220 (before 2002) 15
Ashtray lighting (up to 2002)
Not used (after 2002) -
12 Automatic location recognition (up to 2002) 7.5
Seat belt buckle warning light (up to 2002) 7.5
Not used (after 2002) -
13 Front left door control unit 40
14   -
15   -
16 Brake light switch 7.5
17   -
18 Telephone 5
Emergency call system
19 Seat belt pretensioner (after 2002) -
5
20 Diagnostic connector (up to 2002) 5
Instrument panel (before 2002)
Not used (after 2002)
-
21 Instrument panel (before 2002)
Not used (after 2002)
5
-
22 Instrument panel (up to 2002) 5
Audio system (after 2002) 15
Radio remote display (after 2002)
23 Climate control (up to 2002) 10
Air conditioning control unit (up to 2002)
TV tuner (after 2002)
CD changer (after 2002)
24 Diagnostic connector (up to 2002) 10
Audio system (after 2002) 20
Center console (after 2002)
25 Not used (before 2002)
Audio amplifier (after 2002)
-
25
26 Top control panel module (before 2002)
Not used (after 2002)
10
 
27   -

location of addtional box
An additional fuse and relay box is located on the passenger side.

add. fuse box in engine compartment
General form. additional block.

Diagram
No. Relay
R1 Relay, engine electronics
R2 Starter
R3 Engine control unit, diesel
Or
Air pump
R4 Air compressor relay
R5 horn relay
No. Circuit breakers A
1 horn 15
2 Relay, engine electronics 20
3 20
4 Secondary air pump relay 40
5 Air compressor relay 40
6 Heating system 40
7 Traction control unit until 2002 5
Traction control unit after 2002 10
8 Heated steering wheel (after 2002)  15
No (until 2002)  
9 Daylight system 7.5
10 Gearbox control unit / Automatic transmission shift lever 15
11 Opening the luggage compartment 5
12 Door control unit, front right 40
13 Xenon lamps 10
Headlight adjustment
14 Additional heater 20
15 Relay, additional air unit 20
16 Engine Control Unit, Diesel / Starter Relay  25
17 Engine control unit, diesel / intake manifold heater 7.5
18   -
19 Body Control Unit / ADS Control Unit / Air Suspension 5
20 Relay, auxiliary air unit / A / C control unit / Fan control 10
21 Cooling fan control unit or not used (before 2002) 7.5
No (after 2002) -
22 Ignition coils and capacitor 15


Cars after 2002 are equipped with another engine compartment fuse block.

Additional block diagram (Mercedes W220 after 2002 onwards)
No. Decryption A
R1 Motronic system
R2 Charge air relay
R3 Relay of the fuel module in the tank (fuel pump relay)
or
Empty
1 Motronic system 20
2 Motronic system 20
3 Not
4 Charge air relay 10
5 Not

In the passenger compartment


Fuse box #1 is located under the rear passenger seat.

Assigment of fuses in #1 block under the seat
No. Description
R1 Rear window blind relay
R2 Slip sensor relay
R3 Terminal 15 relay
R4 Additional relay, fuel pump
R5 Heated rear window relay
No. Description A
1 Rear window blind relay 10
2 Slip sensor 5
3 Additional relay, fuel module (fuse for Mercedes w220 fuel pump) 30
4 Heated rear window relay 50
5 Trailer control unit 10
6 Trailer connector 25
7 Trailer control unit 30
8 Closing the luggage compartment 25
Luggage compartment release relay
9 Keyless go control unit 7.5
10 Control unit (for taxi) 30
11   -
12 Voice control unit 15
Handsfree phone
13 Pneumatic System Equipment (PSE) 20
14 Telephone 7.5
15 Multifunctional control unit 7.5
Antenna amplifier
16   -
17 Sound amplifier 25
18 Power rear seats 25
19 Rear air conditioner 15
Coolant circulation pump
20 Rear air conditioner 15
21 Tire pressure monitoring system control unit 10
22 Front left seat belt pretensioner 25
23 Door control unit, rear left 40
24 Front right seat belt pretensioner 25
25 Door control unit, rear right 40
26 Parktronic system 10
27 Refrigerator (in the back of the rear seat) 15
28 Top console (in the ceiling) 40


Fuse box #2 is located at the end of the dashboard on the passenger side, behind a protective cover.

Diagram
No. Decryption A
1 Steering column control unit 7.5
The engine control unit
EIS control unit
Alarm
2 Dashboard 5
3 Top Control Panel Module 10
4 Diagnostic connector (DLC) 10
5 Climate control 10
Air conditioner control unit
6 Center console 10
7 Diagnostic connector (DLC) 5
Dashboard
8 Dashboard 5
9 Front cigarette lighter fuse 15
Ashtray lighting
Related materials
Add new comment