BMW F20 (21) fuse and relay

The BMW F20 is the second generation of the BMW 1 Series five-door compact hatchback, and the BMW F21 presents its three-door version. Both of these models were produced in 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, 2020 and to the present with 2 small restyles. In our material, we will show a designation of the fuse boxes and relays bmw f20 (f21), with box diagrams and their photographs. Note the fuse responsible for the cigarette lighter.

bmw f20

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.

Engine compartment

Main fuse box

It is located on the right side under the protective cover.

Block under the hood bmw f20

Photo for example

photo of the unit under the hood


block diagram under the hood

Table with designation

Purpose of fuses bmw f20 - 21

The fuses numbered 66, 69 and 162 are responsible for the cigarette lighter. One of them is located in the block in the luggage compartment.

Additional elements

Next to this unit can be placed: the relay of the electric fan of the K5 engine, the coolant pump fuse and other engine control modules.

additional elements under the hood

Additional box

It is located on the left side of the undercap space.

Block under the hood 2

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

The unit is located under the protective carpet on the right side.

blocks in the trunk f20


trunk block diagram

Naminal in the trunk

The table with the purpose is presented above.

The individual elements are located behind the side trim on the right.

Passenger compartment

It is mounted on the right pillar, under the passenger side trim.

The location of the unit in the cabin f20


Block in the cabin


  1. Reserve (not occupied)
  2. Reserve (not occupied)
  3. Reserve (not occupied)
  4. Power window, front passenger door
  5. central locking
  6. Window regulator, driver’s door
  7. central locking
  8. Reserve (not occupied)
  9. Reserve (not occupied)
  10. Light control panel, driver assistance control unit and steering column switch cluster
  11. Rear Electronic Module (REM) and Headlight Driver Module
  12. Integrated heating and air conditioning control, dynamic stability control and on-board diagnostics
  13. Outside door handle electronics, contactless tailgate opening, Combox communication station and analysis
  14. Signal

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.

Comments 2

  • 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?

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