The fourth generation of the 7 Series BMW was produced in 2001, 2002, 2003, 2004, 2005, 2006, 2007 and 2008 under the E65 body design. E66 – designated a longer version of the car, and E67 – armored versions. During this time, the car went through one restyling. We offer information describing the fuses and relays of the BMW E65 E66, block diagrams and their locations. Let’s highlight the fuse responsible for the cigarette lighter.
The purpose of fuses and relays may differ from those presented and depend on the year of manufacture and the level of electrical equipment of your car.
Contents
Passenger compartment
Inside the car, the main box with fuses and relays is located behind the glove compartment or, as it is also called, the glove box.
To access, push the cover tab forward and flip up. It will look something like this. 
At the bottom there should be a fuse data sheet with up-to-date information for your model. We offer only general information. Spare fuses and plastic tweezers are located on the mounting block in the trunk.
Diagram
Designation
| F1 | 20A Auxiliary heater |
| F2 | 5A Electric antenna drive |
| F3 | 30A Body Control Module |
| F4 | — |
| F5 | 7.5A Center console |
| Information display | |
| Rear information display | |
| telephone | |
| F6 | CD changer |
| F7 | 7.5A cruise control |
| F8 | 10A Dynamic Drive |
| F9 | 5A Tire pressure monitoring system |
| F10 | 15A Electronic air conditioning control unit |
| F11 | 7.5A Rear information display |
| F12 | 20A Steering column electrical control unit |
| F13 | Empty |
| F1 | 15A Suspension system |
| F15 | 15A Security and Gateway Module |
| 15A Driver’s seat | |
| 15A Passenger seat | |
| F16 | Empty |
| F17 | 5A Dynamic Stability Control (DSC) |
| 5A Light Switch Module | |
| F18 | Headlight range control unit |
| F19 | 30A Left rear door electrical control unit |
| F20 | 25A Dynamic Stability Control (DSC) |
| F21 | 30A Left front door electrical control unit |
| F22 | 15A Transmission control unit |
| F23 | 30A Electric front seats |
| F24 | 10A Night vision system control unit |
| F25 | Empty |
| F26 | Empty |
| F27 | Empty |
| F28 | 15A Instrument cluster control unit |
| F29 | 7.5A Diagnostic Connector (DLC) |
| F30 | 10A Electronics box (E-box) cooling fan / Starter relay / Fuel heater relay / Energy saving relay |
| F31 | 20A Cigarette lighter |
| F32 | 20A Charging Connector(s) |
| F33 | 7.5A Instrument panel |
| F34 | 5A Audio Amplifier |
| F35 | 40A Windshield wiper |
| F36 | 50A Light Module |
| F37 | 40A Air conditioner/heater fan motor control unit |
| F38 | — |
| F39 | 50A ABS / ABS system |
| F40 | 60A Integrated control unit |
| F41 | 50A Fuel heater relay (diesel) |
| F42 | 50A Ignition switch control unit |
| F43 | 50A Cigarette lighter |
| F44 | 50A Light Module |
3 fuses are responsible for the cigarette lighter – 31, 32, 43.
Luggage compartment
In the luggage compartment, the fuse and relay box is located on the right side. To access, you need to fold down the right side panel by grasping the handle at the top. The current fuse specifications are shown on the inside of the panel.
Diagram
Assignment
| F51 | 15A Heated windshield relay |
| F52 | 15A Refrigerator |
| F53 | 5A Reserve |
| F54 | 5A Control module for remote control system for central locking and engine starting |
| F55 | 30A Rear seat heating control module |
| F56 | 30A Electric front seats |
| F57 | 15A Reserve |
| F58 | 30A Right front door electrical control module |
| F59 | 5A Parking brake control module |
| F60 | 30A Right rear door electrical control module |
| F61 | 30A Parking Brake Control Module |
| F62 | 30A Compressor for active suspension system |
| F63 | 20A Electric sunroof control unit |
| F64 | Empty |
| F65 | 30A Radio |
| F66 | 20A Trailer electrical connector |
| F67 | Empty |
| F68 | Empty |
| F69 | Empty |
| F70 | Empty |
| F71 | Empty |
| F72 | 7.5A Suspension control unit |
| F73 | 15A Fuel module (fuel pump fuse) |
| F74 | Empty |
| F75 | 30A Heated seats |
| F76 | 10A Navigation system / DVD |
| F77 | 5A Seat air conditioning |
| F78 | 30A Heated seats |
| F79 | 10A Telephone |
| F80 | Empty |
| F81 | 50A Control unit for opening/closing trunk lid drive |
| F82 | Empty |
| F83 | 40A Reserve |
| F84 | Empty |
Engine compartment
Under the hood in the engine compartment on the right side there is another block with fuses and relays.
Type 1
Diagram
Allocation
| 1 | 20A Canister Purge Solenoid(s) |
| Mass flow meter | |
| Rail pressure control valve | |
| Hall Sensor | |
| 2 | 20A Crankcase heater |
| Swirl control valve, solenoid | |
| Intake manifold switching valve | |
| Oil level sensor | |
| Heating block | |
| 3 | 30A Battery 30A, B+ |
| DDE control unit | |
| 4 | Not used |
| 5 | Not used |
| R1 | DDE main relay |
| R2 | Starter relay |
| R3 | Not used |
| R4 | Not used |
Type 2
Diagram
Appointment
| 1 | Ignition coils 1 – 3 |
| 30A Ignition coils 4 – 6 | |
| 2 | 30A Camshaft Camshaft Solenoid |
| DME | |
| Idle speed drive | |
| Fuel Tank Wiring Harness | |
| Variable valve timing | |
| 3 | 20A Mass flow meter |
| Crankshaft position sensor | |
| Camshaft sensor | |
| MAP-controlled engine cooling thermostat | |
| 4 | 30A Oxygen sensor before catalytic converter |
| Oxygen sensor 2 before catalytic converter | |
| Oxygen sensor behind the catalytic converter | |
| Oxygen sensor 2 behind the catalytic converter | |
| Sequential gearbox | |
| 5 | 30A Injector relay |
| R1 | Injector relay |
| R2 | DME relay |
Type 3
Diagram
Decoding
| 1 | 30A Variable Valve Timing |
| DME | |
| Injectors (cylinders 5 – 8) | |
| 2 | 20A Fuel tank cap |
| Camshaft camshaft solenoid | |
| Camshaft sensor | |
| 3 | 20A Ignition coils 1 – 4 |
| 4 | 20A Ignition coils 5 – 8 |
| 5 | 30A Camshaft Camshaft Solenoid |
| Camshaft sensor | |
| MAP-controlled engine cooling thermostat | |
| Crankshaft position sensor | |
| Mass flow meter | |
| 6 | 20A injectors (cylinders 1 – 4) |
| 7 | 20A Transmission control unit |
| 8 | 30A Oxygen sensor before catalytic converter |
| Oxygen sensor 2 before catalytic converter | |
| Oxygen sensor behind the catalytic converter | |
| Oxygen sensor 2 behind the catalytic converter | |
| Oil quality sensor | |
| 9 | 10A Fuel tank leak diagnosis |
| Secondary air pump relay | |
| Mass flow meter | |
| Electronics box (E-box) cooling fan | |
| Exhaust manifold cover | |
| Energy saving relay | |
| 10 | 40A Variable Valve Timing |
| 11 | 40A Variable Valve Timing |
Type 4
Diagram
Assignment
| 1 | 30A Battery, B+ |
| DDE control unit | |
| 2 | 30A Canister Purge Solenoid(s) |
| Boost pressure regulator solenoid | |
| Heating block | |
| Intake manifold switching valve | |
| Mass flow meter | |
| Rail pressure control valve | |
| Hall Sensor | |
| Speed sensor | |
| 3 | |
| 4 | 30A Exhaust gas recirculation valve |
| Boost pressure regulator solenoid | |
| Oil level sensor | |
| Mass flow meter | |
| 5 | 30A DDE control unit |
| R1 | Main relay DDE |
| R2 | Main relay DDE |
| R3 | Starter relay |
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If you have anything to add, write in the comments.
Your webaddress is called fuseandrelay.com yet I haven’t seen any mention of the relay locations and assignments for the BMW E65/E66. I know there are relays as I have seen three. Two by the trunk power module and one behind the fuse panel behind the glove box. Knowing he locations and assignments of all relays would be extremely helpful when troubleshooting issues such as air conditioner suddenly stops blowing cold air. Kinda difficult to follow process of elimination on compressor clutch function when the electrical components controling power to the clut h can’t be located.
I have a 2004 BMW 745 LI I have been teaching for the starer relay everybody saying that it’s located by the computer under the filter I did remove every devices there and that relay is nowhere to be find I can only see 2 relays in the trunk by the fuse box and 1 under the gloves compartment