Browse BMW Z4 fuse box diagrams for 2019–2026 models with fuse locations, panel layouts, and detailed electrical system information for the latest-generation roadster. This article covers the third-generation BMW Z4 (Model Code: G29), available from 2019, and includes fuse box diagrams for BMW Z4 2019, 2020, 2021, 2022, 2023, 2024, 2025 and 2026, along with details about the location of the fuse panels inside the vehicle and a clear explanation of the assignment of each fuse (fuse layout).
Power window actuator, driver’s door with control electronics
21
30A
Front passenger window with control electronics
22
30A
Driver’s side rear power window with control electronics
23
30A
Passenger side rear power window with control electronics
24
30A
Left reversible electromotive automatic reel (seat belt)
25
20A
Roof function center
26
40A
Body domain controller
27
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28
40A
Dynamic Stability Control (DSC)
29
20A
Electronic transmission control, transfer case
30
15A
Media system
31
15A
–
32
5A
Center console control panel, parking
33
5A
Battery
34
5A
Instrument cluster control unit
35
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–
36
5A
Roof function center (map lamp, interior lighting, ambient lighting)
37
5A
Central lock
38
5A
Driver’s outer door handle electronic module
39
60A
Body domain controller
40
40A
Fan motor with output stage
41
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–
42
—
–
43
—
–
44
—
–
45
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46
20A
Cigarette lighter, thermoelectric cup holder
47
20A
Engine management
48
20A
Heated seats
49
10A
Electric steering column adjustment
50
30A
Heated seats
51
30A
Engine management
52
20A
Seat heating electronics
53
30A
Trailer module
54
20A
Autonomous additional heater
55
30A
With seat module: Seat module Without seat module: Seat adjustment switch block
56
30A
With seat module: Seat module Without seat module: Seat adjustment switch block
57
10A
Electric steering column adjustment
58
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–
59
5A
Electrochromic interior rear view mirror
60
5A
Driver assistance
61
5A
Center rear door trim panel illumination (driver’s side), rear door pocket illumination (driver’s side), rear door interior handle illumination (driver’s side), rear door trim panel illumination driver’s side (top), rear left speaker illumination, Diesel: additional water pump
62
5A
Auxiliary battery, instrument panel speaker light, air freshener, CD drive, ionizer, B57, B58: starter-alternator 48V
63
5A
Glove box light switch, driver camera system, 48V power control unit (PCU48), 48V battery
64
5A
Driver’s seat back width adjustment valve block, driver’s lumbar support valve block, seat adjustment switch block (driver’s side), footwell taillight (driver’s side), backlight driver’s seat back panel, USB charging port, front left seat inflation module
65
5A
Front passenger’s backrest width adjustment valve block, Front passenger’s lumbar support valve block, Seat adjustment switch block (front passenger’s side), Rear footwell lighting (front passenger’s side), Front passenger’s backrest rear panel lighting, USB connector for charging No. 2, front Right seat inflation module
66
5A
Upper center instrument panel light, upper front passenger side instrument panel light, lower center instrument panel light, lower driver/passenger side instrument panel light, front left/right footwell lighting
67
5A
Driver’s door switch box, Driver’s door seat switch box, Driver’s door interior handle lighting, Driver’s door trim panel lighting (center), Driver’s door pocket lighting, Driver’s door trim panel lighting (top), Front left midrange speaker lighting, Front Left Tweeter Illumination
68
5A
Passenger’s exterior mirror, Passenger’s door switch box, Passenger’s interior door handle illumination, Front passenger’s door trim panel illumination (center), Passenger’s door pocket illumination, Front passenger’s door trim panel illumination (top), Front right midrange speaker illumination, Illuminated front right tweeter
69
5A
Radiator shutters (upper, lower)
70
5A
Rear switchboard, electric fan shutdown relay, electric fan
71
5A
With Surround Camera: Surround Camera, Rear View Camera
72
7.5A
Engine management
73
5A
Instrument cluster control unit
74
10A
USB socket
75
10A
Crash safety module
76
5A
Driver assistance
Passenger Side (BDC)
Fuse Box Location
The fuse compartment is located in the BDC (Body Domain Controller) electronic control unit, which is fitted on the right pillar beneath the passenger compartment trim on the passenger’s right side.
Fuse Box Diagram
Fuses
Assignment of the fuses in the passenger compartment (Body Domain Controller)
Fuse Data
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Heating/air conditioning system, tailgate function module, rain/light/sun/condensation sensor
F4
5A
Passenger Side Outer Door Handle Electronic Module, Power Control Unit, Telematics Unit
F5
20A
Lock Relay, Unlock Relay (Doors, Fuel Cap)
F6
20A
Driver’s Door Lock Relay, Lockout Relay (Driver’s Door Lock, Front Passenger’s Door Lock, Fuel Door Central Lock Actuator)
Luggage Compartment
Fuse Box Location
The fuses are situated in the cargo compartment on the right side, behind a cover. Release the cover on the right-side panel, arrow 1, and fold it open, arrow 2.
Fuse Box Diagram
Fuses
Assignment of the fuses in the luggage compartment
Fuse Data
Full access is available to registered users — log in or register.
