Home > DIY > SL-Class > R230 (2002-2012) > SL Fuse Chart, Location, Diagram, Allocation 2002-2012 R230 SL350 SL500 SL55 AMG SL600 SL65 AMG SL550 SL55 AMG

SL Fuse Chart, Location, Diagram, Allocation 2002-2012 R230 SL350 SL500 SL55 AMG SL600 SL65 AMG SL550 SL55 AMG

SL R230 Fuse Box Locations

  • in the engine bay on the driver’s side
  • in the engine bay on the passenger’s side
  • in the passenger compartment
  • fuses box in the rear trunk

Fuse Types Used on Mercedes-Benz

The ATO and MAXI fuses are installed on the fuse box panels. If you want to save on these fuses, you can purchase a box with 100+ fuses on Amazon for only a few dollars.

Fuse Guide Applications

Model: SL350 SL500 SL55 AMG SL600 SL65 AMG SL550 SL55 AMG
Years: 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012
Chassis: R230
Make: Mercedes-Benz


Interior Fuse Box – Passenger Compartment.

SL55 SL500 R230 Fuse Chart Location

You will find a fuse box in the passenger compartment behind the passenger seat. This is where the rear SAM Control Unit N10/8 is located as well. In this location, you will find fuses 50 through 77. Here you will also find relays Q through U.

To access these fuses and relays, open the passenger-side storage compartment. At the bottom of the storage compartment, you will see two clips towards the back. Press the clips and lift the storage compartment floor.

Fuses Passenger Compartment

Download Fuse assignment of rear fuse and relay box R 230 SL-Class (Source:Justanswer.com)

Fuse Purpose, Designation, Allocation Ampere
50 Not Used
51 Air Cooler Pump 7.5
52 Fuel Pump 30
53 Rear  Glass Heater 30
54 AGW Audio Gateway, Amplifier 20
55 Stationary Heater Receiver 5
56 Stationary Heater 20
57 Antenna Amplifier 5
58 Keyless Go 7.5
59 NAV, Navigation 5
60 Air Cooler 7.5
61 Cutoff Relay 30
62 Control Unit N52 25
63 Control Unit N52 5
64 Voice Control (VCS) 5
65 Tele Aid 5
66 Amplifier, Audio 25
67 Parktronic Control Unit 5
68 Roll Bar 25
69,70 TPMS Tire Pressure Monitor 25
71 Pneumatic Equipment 20
72 Transmission 10
73 Hydraulic Unit 40
74 Control Unit N52 5
75 TV Tuner 5
76 Tele Aid, Emergency Call 7.5
77 COMAND, Radio, CD Player, CD Changer 20

Relays in Passenger Compartment, Behind Passenger’s Seat

Relay Purpose, Allocation
Q K40
R Air Cooler Pump
S Bridge
T Fuel Pump
U Heater rear window

Fuses and Relays, Engine Bay – Driver Side

r230 fuse box driver side

There are two fuse boxes in the engine bay. One is on the driver’s side, beside the brake fluid reservoir. The fuses and relays here are covered with a black plastic cover. Move the locking tab to the unlock position and remove the plastic cover.

Here, you will find fuses allocated numbers 1 through 27 and relays A through J.

Engine Bay – Driver Side Fuse and Relays

Fuse Designation, Purpose, Function Ampere
1 Wiper Heater 20
2 High-pressure Pump 40
3 Steering Column In / Out 15
4 Steering Column Up / Down 15
5 Wiper 7.5
6 SRS Airbag Restraint System 7.5
7 Rear fuses 5
8 Central Gateway 10
9 Door control unit DCU 40
10 Headlights 10
11 Cutoof Relay 30
12 SRS Restraint Airbag 7.5
13 Active Body Control ABC 15
14 Windshield washer motor 7.5
15 Connector 10
16 Tele Aid 5
17 Seat Belt Latch Sensor 5
18 Not used
19 Engine Coils 15
20 Data Connection 7.5
21 Dashboard, Instrument cluster 5
23 Coolant Motor for AC, Controls 10
24 Brake Light switch, Stop Lamp 5
25 Alarm, Horn 7.5
26 Control Panel, Lower unit 5
27 Seat adjustment, Left 30

Relays, Engine Bay – Driver Side

Relay Function
A Wiper
B Keyless Go
C Circuit 15R
D Steering Adjustment
E Steering Column Adjustment
F Pump
G Wiper
H Wiper On Off
I Steering Column Adjust
J Steering column adjust

Fuse and Relays – Engine Bay – Passenger Side

Fuse box location W220 S Class
Fuses in the engine compartment of W220

A second fuse box, SAM N10/11, is located on the passenger side of the engine bay. Here, you will find fuses 28 to 49 and relays K through P.

Fuse Purpose Ampere Rating
28 Horn 15
29 ECU, Engine Control Unit 20
30 Engine 20
31 Air Pump 40
32 Electric Pump 33
33 SBC Brakes 50
34 SBC Unit, Hydraulic Brakes, Sensors 5
35 Oil Cooling Fan AMG 30
36 ESP and BAS 5
37 Transmission Control Unit 7.5
38 Overhead Control Panel 7.5
39 Steering Wheel Heater 15
40 Transmission 5
41 Door Control Unit 40
42 Seat Adjustment Control Unit 30
43 Engine Control Unit, Multiple fuse, and relays 20
44 Oxygen Sensor, O2, Supercharger, Air pump, AACDivert Air Switch 20
45 Distronic Control Unit 5
46 Active Body Control 5
47 Sun Sensor 5
48 Not Used
49 Fan Motor 5

Relays, Passenger side of the engine compartment

K Engine ECU
L Starter
N Air Pump
O Air Pump
P Horn

What fuse type do I need to use?

Your Mercedes-Benz uses Automotive Blade Fuse Type. A box of 100 fuses that include all the different ampere ratings you need costs less than $20 on Amazon.

  • fuse amere ratingWhen replacing blown fuses, use the same ampere rating fuse. The fuse rating is written on the fuse. You can verify that you are using the correct fuse by ensuring the fuse colors match the blown fuse and the new fuse. This indicates the same ampere rating.
  • Make sure to close the fuse box cover properly and lock the tabs. This is very important to avoid any moisture getting inside the fuse box. The fuse box panel has a seal to keep water and moisture out of the box.

Knowing the location of the fuse box in your home or car is important for several reasons:

  1. Safety: The fuse box contains fuses or circuit breakers that control the electrical power supply to various parts of your home or car. In an electrical overload or short circuit, the fuse or circuit breaker trips, cutting off the power supply to prevent damage or fire. Knowing the location of the fuse box and how to access it quickly can help you prevent accidents or fires.
  2. Troubleshooting: If you are experiencing an electrical problem in your home or car, knowing where the fuse box is can help you troubleshoot the issue. You can check the fuses or circuit breakers to see if they are tripped or blown and replace them if necessary.
  3. Maintenance: Regular maintenance of your home or car’s electrical system may require you to access the fuse box to replace old or damaged fuses or circuit breakers. Knowing the location of the fuse box can make this task easier and faster.

Knowing the fuse box’s location is essential to maintaining a safe and functional electrical system in your home or car.


What is the Best Scanner for Diagnosing Tripped Fuses and Broken Relays on a Mercedes-Benz?

The YOUCANIC full-system diagnostic scanner is a smart tool that helps uncover the mysteries of a car’s electronic systems. It’s a go-to for tackling tricky electrical problems, perfect for car experts and enthusiasts. If you’re dealing with a tripped fuse, this scanner quickly spots where things went wrong and helps you get things back on track.

Overall, the YOUCANIC full system diagnostic scanner is invaluable for any Mercedes-Benz owner or technician looking to troubleshoot problems quickly and accurately. With its user-friendly interface and powerful diagnostic capabilities, you can save time, money, and frustration by diagnosing and resolving issues with your Mercedes-Benz quickly and efficiently.

One comment

  1. Which fuse controls the glove box light in a 2005 mercedes sl500?

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