BMW F20 is the second generation of the BMW 1 Series five-door compact hatchback, the BMW F21 introduces its three-door version. Both of these models were produced in 2012, 2013, 2014, 2015, 2016, 2017, 2018. In our material, we will show a description of fuses and relays BMW f20 f21 with fuse box diagrams, their locations and photographs. Note the fuse responsible for the cigarette lighter.
Check the current purpose of fuses and relays with your brochure, which should be in the luggage compartment or other technical documentation. In case of difficulty, contact your dealer.
Contents
Engine compartment
Main fuse box
It is located on the right side under the protective cover.
Photo for example
Diagram
Assignment
| 18 | 15A Diagnostic connector |
| 19 | 10A Engine control |
| 20 | 5A Audio control unit, roof electronics |
| 21 | 5A Control unit |
| 22 | 7.5A Door locks |
| Passenger rearview mirror, interior lighting | |
| 23 | 10A DDE main relay |
| 24 | Electronic automatic transmission (EAT) control unit, 4*4 |
| 25 | 5A Touchbox, audio |
| Body control unit, abs, praking | |
| 26 | 5A Seat heating |
| 27 | 10A Driver/passenger seat lumbar support valve block, driver/passenger side seat adjustment switch block |
| 28 | 5A Front left lamp |
| Front right lamp | |
| Rain sensor | |
| Interior lighting | |
| 29 | 5A Coolant pump |
| 30 | |
| 31 | |
| 32 | Transfer box, security system |
| 33 | 15A Coolant pump |
| Air conditioning compressor | |
| Additional water pump | |
| 34 | 10A Safety system, seat belt |
| 35 | |
| 36 | 40A |
| 37 | 40A |
| 38 | |
| 39 | |
| 40 | 15A Headlights, outdoor lighting, dimensions |
| 41 | 10A |
| 42 | Electrochromic rearview mirror |
| 43 | |
| 44 | 5A Driver support systems based on a video camera, active steering system |
| 45 | 5A Cruise control |
| 46 | 5A Crankcase ventilation heater |
| Coolant shut-off valve, louvre | |
| 47 | 5A Night vision electronics (NVE), vehicle sound generator (VSG) |
| 48 | 10A Steering column switches |
| 49 | |
| 50 | 5A Instrument cluster |
| 51 | |
| 52 | 7.5A Instrument cluster |
| 53 | 5A Glove box lighting, instrument panel trim strip lighting (driver/passenger side), instrument panel trim strip lighting on driver’s side, driver/passenger footwell lighting |
| 54 | 7.5A Selector switch |
| 55 | 5A Electronic power steering (EPS) |
| 56 | 5A Air quality sensor, ventilation system |
| 57 | 40A Fuse box, Headlights, outdoor lighting, dimensions |
| 58 | 30A Dynamic Stability Control (DSC) |
| 59 | |
| 60 | |
| 61 | |
| 62 | 30A Retractable roof |
| 63 | 30A Transfer box |
| 64 | 20A Front passenger seat heating module |
| 65 | 20A Driver seat heating module |
| 66 | 20A Cigarette lighter |
| 67 | 30A Driver’s seat control unit |
| Driver seat adjustment | |
| 68 | 30A Passenger seat adjustment |
| Passenger seat control unit | |
| 69 | 20A 12V socket |
| 70 | 20A Heating |
Fuses 66 and 69 for 20A are responsible for the operation of the cigarette lighter.
Power fuse box
A power fuse box is installed next to the fuse and relay boxes
Diagram
Designation
- FL1 – 50/80/125A Trip relay
- FL2 – 125A Electronic power steering (EPS)
- FL3 – 100A Additional heater
- FL4 – 40A Heated fuel filter
- FL5 – 40A Dynamic Stability Control (DSC)
- FL6 – 40A Fan motor
Relays and fuses of the DDE unit and a 50A fuse for the coolant pump, relay of the electric fan K5 can also be installed nearby.
Additional box
It is located on the left side of the undercap space.
Here you can find: the main engine relay DDE K2085 and engine control fuses (Rail pressure control valve, Fuel volume regulator, Camshaft position sensor, Boost pressure regulator solenoid, Oxygen sensor, Mass flow meter, Oil level sensor, EGR cooler changeover valve)
Luggage compartment
There can be three fuse boxes in the luggage compartment. The fuse box, located behind the casing on the right side, the second and third near the battery (power box with red cover) and the main fuse and relay box.
Diagram
Check the designation of the fuses and relays with your diagrams from the fuse card.
Table with designation
Passenger compartment
It is mounted on the right pillar, under the passenger side trim.
Diagram
Assignment
- Reserve (not occupied)
- Reserve (not occupied)
- Reserve (not occupied)
- Power window, front passenger door
- Central locking
- Window regulator, driver’s door
- Central locking
- Reserve (not occupied)
- Reserve (not occupied)
- Light control panel, driver assistance control unit and steering column switch cluster
- Rear Electronic Module (REM) and Headlight Driver Module
- Integrated heating and air conditioning control, dynamic stability control and on-board diagnostics
- Outside door handle electronics, contactless tailgate opening, Combox communication station and analysis
- Horn
That’s all. We have tried to describe in as much detail as possible all fuses and relays located in the BMW F20 / 21. And if you want to add something, write in the comments to the publication.
What cause indicator blinking fast on the left side and rear indicator not working I check globe its fine but no power going on the globe.. What can be the cause or problem.,any relay for the turning signals.. bmw F20 2017 model.
What would cause the horn not to work, full beam not working or doesn’t flash, volume on steering column doesn’t work, rain sensors not working, indicators flash fast? Frm/footwell module?
I have heating problems inside the cabin. Driver side warm as should passenger side very low temperature. When engine is running with climate control off I start heating up inside and will get both sides warm for 1 minute.