2021 BMW 4 Series — Maintenance Guide
Complete maintenance schedule, recommended fluids, parts and estimated costs.
Recommended Fluids
Engine Oil
0W-20
5.8L
Fuse Diagram (8)
| Box | # | A | Circuit |
|---|---|---|---|
| FB Front Left | 102 | — | Digital Motor Electronics, Integrated Voltage Module |
| FB Front Left | 104 | — | Fuel pump relay, Fuel pump control,\\nHybrid System |
| FB Front Right | 21 | — | Power windows with anti-trapping function |
| FB Front Right | 23 | — | Power windows with anti-trapping function |
| FB Front Right | 25 | — | Convertible top module / Convertible relay |
| FB Front Right | 27 | — | Level control system (air suspension compressor relay) |
| Luggage compartment fuse box | 201 | — | DME – Digital Motor Electronics / Integrated Voltage Module – IVM. |
| Luggage compartment fuse box | 205 | — | Fuel pump relay / Fuel pump control. DME – Digital Motor Electronics / Integrated Voltage Module – IVM. |