Jonathan Yarden Oct 06, 2021 · 5 min. read
In this article you will find a description of fuses and relays Mercedes-Benz,
with photos of block diagrams and their locations.
Highlighted the cigarette lighter fuse (as the most popular thing people look for).
Get tips on blown fuses, replacing a fuse, and more.
Year of production: 2003, 2004, 2005, 2006, 2007, 2008
Fuses in trunk compartment
Fuse | Ampere ratging [A] | Description |
F001 | 30 | Driver seat power |
F002 | 30 | Passenger seat power |
F003 | 7,5 | Navigation |
F003 | 7,5 | Parktronic |
F003 | 7,5 | Tire Pressure Control |
F003 | 7,5 | TV |
F004 | 20 | Fuel pump |
F005 | 20 | Not used |
F006 | 40 | Audio getway |
F007 | 15 | Emergency Light T model |
F008 | 7,5 | Antenna Module |
F009 | 25 | Roof unit |
F010 | 40 | Window Defroster Rear |
F011 | 20 | Tailgate Control Unit |
F012 | 15 | Plug Socket Trunk |
F013 | 15 | Plug Socket Rear |
F014 | — | Not used |
F015 | 10 | Fuel Tank Locking |
F016 | 20 | Heated Seats rear |
F017 | 20 | Trailer Power Supply |
F018 | 20 | Trailer Control Unit |
F019 | 20 | Electronic control unit for additional rear light |
F20 | 7,5 | Window Shade Rear |
F20 | 30 | 3rd Stop light |
Relays in trunk compartment
Relay | Despcription | |
Relay 1 | kA | Fuel Pump |
Relay 2 | kB | Relay 2 Circuit 15R |
Relay 3 | kC | Reserve 2 |
Relay 4 | kD | Rear Wiper |
Relay 5 | kE | Rear Window Defroster |
Relay 6 | kF | Relay Circuit 15R |
Relay 7 | kG | Fuel Filler Cap Polarity Change 1 Relay |
Relay 8 | kH | Fuel Filler Cap Polarity Change 2 Relay |
Passenger compartment fuse box.
Fuse | Ampere rating [A] | Despcription |
F021 | 30 | Door Control Unit Rear Right |
F022 | 30 | Door Control Unit Passenger |
F023 | 30 | Passenger Set Adjustable Memory |
F024 | 25 | Keyless Go |
F025 | 20 | Additional Heating with/without remote start |
F026 | 7,5 | CD Charger |
F027 | Reserve | — |
F028 | 5 | Radio |
15 | ||
F029 | 7,5 | Steering Column Module |
F030 | 7,5 | Diagnostic Socket |
F031 | 5 | Top Switch Panel |
F032 | 30 | Door control unit rear left |
F033 | 30 | Door control unit driver |
F034 | 30 | Driver seat adjustadble/memory |
F035 | 5 | Weight sensoring system |
F036 | 25 | Heated seats front |
F037 | 5 | Control Unit Height Adjustment |
15 | ||
F038 | 5 | Airmatic |
15 | ||
F039 | 5 | Bottom Switch Panel |
F040 | 10 | Steering wheel heating |
F041 | 5 | Central Getway |
F042 | 7,5 | Engine Control Module |
F043 | 7,5 | Fuse and Relay Box Driver |
Fuse in engine compartment
Fuse | Ampere rating | Description |
F43 | 15 | Not used |
F44 | 15 | Not used |
F45 | 7,5 | Not used |
F46 | 7,5 | Not used |
F47 | 5 | ESP, SPS, PML & BAS control unit N47-5 |
F48 | 7,5 | Restraint system control unit N2/7 |
F49 | 7,5 | Not used |
F50 | 5 | Not used |
F51 | 5 | Not used |
F52 | 7,5 | Rotary light switch S1, Cluster, Glove Compartment |
10 | ||
F53a | 15 | Fanfare horn relay N10/1kO |
F53b | 15 | a side always powered b side no power with ignition off |
F54a | 15 | Cigarete lighter |
F54b | 15 | a side no power with ign. Off b side always powered |
F55 | 7,5 | Not used |
F56 | 40 | Wiper Motor |
F57 | 25 | Not used |
F58 | 15 | Ignition Coils |
F59 | 15 | Starter relay |
20 | ||
F60 | 10 | Oil cooler fan |
F61 | 40 | Electric air pump |
F62 | 30 | SEQ Pump Control relay N10/1kM |
20 | ||
F63 | 15 | Circuit 87 relay, engine N10/kl |
F64 | 7,5 | Rotary light switch, more |
F65 | 20 | EIS EZA Unit N73 Steering lock unit N26/5 |
F66 | 7,5 | Right/left front lamp unit E2, E1 |
Relays in engine compartment
Relay | Description | |
Relay | kI | Circuit 87 relays, engine |
Relay | kJ | — |
Relay | kL | Starter Relay |
Relay | kM | SEQ ASG Pump Control Relay |
Relay | kN | Circuit 15 relay |
Relay | kO | FAN Relay Module |
Relay | kP | Circuit 15 relay |
Relay | kR | Air pump or oil cooler fan relay |
Relay | kS | AirMatic Relay K67 |
Relay | kT | Cutoff relay to interruptible loads K75 |
Front Pre Fuse Power Distribution
Fuse | Ampere rating [A] | Desciprion |
F70 | 15 | Not used |
F71 | 15 | M4/7 Electric suction fan with integrated Control |
F72 | 50 | A7/3 Traction system hydraulic unit |
F73 | 40 | A7/3 Traction system hydraulic unit |
F74 | 40 | K67 Airmatic relay |
F75 | 40 | N10/11 Passenger SAM P |
F76 | 40 | N22 Air Condigtioning Control Module |
F77 | — | Reserved |
Rear pre fuse block in trunk in front of main large battery A211545401
Fuse | Ampere rating [A] | Description |
F78 | 20 | N10/1 Driver SAM D |
F79 | 20 | N10/2 Rear SAM-R |
F80 | 15 | N10/1Driver SAM D |
F82 | 15 | N3/10 Control Module |
F83 | 10 | Reserved |
F84 | 5 | N82 Battery Control Module |
F85 | 5 | N112 Communication Platform and A35/11 VCS |
F86 | 5 | x58/1 Interior socket |
F87 | 40 | M40/1 Fneumatic Pump or Dynamic Seat Control |
F88 | 30 | N121 Trunk Closer Module |
Fuse colour
Ampere rating [A] | Colour |
5 | Beige |
7,5 | Brown |
10 | Red |
15 | Blue |
20 | Yellow |
25 | White |
30 | Green |
40 | Amber |
50 | Red |
60 | Blue |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.
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