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.

• ATO Automotive Blade Type Fuse
• Maxi Fuses

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.

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

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

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
M
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.

• When 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?

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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.