BMW Z4 (E85-E86) | 2002-2008 | Fuse Box Diagrams and Locations

BMW Z4 (E85/E86; 2003-2008)

The first-generation BMW Z4 (chassis codes E85 for the roadster and E86 for the coupe), a dynamic and stylish 2-door sports car, was produced from 2002 to 2008. Celebrated for its sharp handling, sporty design, and exhilarating performance, the Z4 set a new standard for BMW’s iconic Z series.

In this article, you will find fuse box diagrams for BMW Z4 models produced between 2002 and 2008, including years 2002, 2003, 2004, 2005, 2006, 2007, and 2008. These diagrams offer essential insights into the fuse layout, helping you locate and identify each fuse and relay to ensure proper function of the car’s electrical systems.

What’s Included:

  • Fuse Box Diagrams: Detailed and easy-to-read visuals for quick identification.
  • Fuse Panel Locations: Clear instructions on where to find the fuse panels inside the vehicle.
  • Fuse Assignments: Descriptions of each fuse and relay to simplify troubleshooting and repairs.

This guide is an invaluable resource for BMW Z4 (E85/E86) owners and technicians. Whether you’re addressing electrical issues, replacing fuses, or performing routine maintenance, this reference provides the knowledge you need to keep your vehicle running at its best.

Maintain your BMW Z4 (Mk1, E85/E86) with confidence using this detailed fuse box guide!

Fuse Box Location

The fuse box is located behind the glove compartment.

  1. Open the glove compartment;
  2. Press the lock on the left; see arrow 1;
  3. Press the lock on the right; see arrow 2;
  4. Swing the glove compartment down.
Location of the fuses in the passenger compartment: BMW Z4 (2002-2008)

Spare fuses and plastic tweezers for grasping the fuses are found in the onboard tool kit. It is located in the luggage compartment beneath the floor panel.

Onboard tool kit location: BMW Z4 (2002-2008)

Fuse Box Diagram

Instrument panel fuse box diagram: BMW Z4 (2002, 2003, 2004, 2005, 2006, 2007, 2008)

Assignment of the fuses

Fuse Data
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№AmpsProtected components
1 – –
210A –
330A –
430A –
515AFront Cigar Lighter
610AReversing Light Switch (Manual Transmission), Reversing Light Relay ((2002-2004) – Automatic Transmission, SMG)
75ASteering Angle Sensor DSC, “Sport” Button, Dynamic Stability Control (DSC)
85ADriver’s Door Module, Park Distance Control (PDC), Cigar Lighter Relay
97.5A2002-2004: Oil Level Sensor, Transmission Control (Automatic Transmission), Sequential Manual Transmission (SMG).
2005-2008: Data Link Connector (OBD II), Integrated Supply Module (IVM (N52))
105A2005-2008: General Module Control Unit, Auxiliary Water Pump, Electronic Vehicle Immobilizer (EWS)
1125AGeneral Module Control Unit
125AGeneral Module Control Unit, Electronic Vehicle Immobilizer (EWS), Centre Console Switch Centre, Instrument Cluster Control Unit
135A2002-2005: Safety and Information Module, Seat Occupancy Recognition.
2006-2008: Rain/Headlight Sensor, Volume Spring
145ASecondary Air Pump Relay, Light Switch Cluster, Clutch Switch Module, Brake Light Switch
1530A2002-2005: Passenger’s Seat Adjustment Switch (LHD), Driver’s Seat Memory (RHD).
2006-2008: Passenger’s Seat Adjustment Switch
1625ACentre Console Switch Center
17– –
18– –
1920AFuel Pump Relay
2020A/30ARear Window Defogger Relay (2002-2005 – 20A; 2006-2008 – 30A)
215AHeated Spray Nozzles Thermal Switch (2002-2004), Passenger’s Side Outside Mirror, Steering Column Switch (Cruise Control (2006-2008))
225AHeating/Air Conditioning System, Electronic Power Steering (EPS)
235ALight Switch Cluster, Instrument Cluster Control Unit
245AInstrument Cluster Control Unit, Data Link Connector (OBD II), Steering Angle Sensor DSC, Gear Indicator Lighting (USA), Auxiliary Water Pump (S54)
255AElectrochromic Interior Rear View Mirror, Digital Motor Electronics (DME) Control Unit, Terminal 15 Power-Saving Relay, Rear Window Defogger Relay
2630AGeneral Module Control Unit
275AOutside Mirror Fold-in
285A2002-2005: Steering Column Switch (Cruise Control), Rain/Headlight Sensor, Volume Spring.
2006-2008: Crash Safety Module, Airbag Indicator Light, Seat Occupancy Recognition
2930A2002-2005: Driver’s Seat Memory (LHD), Passenger’s Seat Adjustment Switch (RHD).
2006-2008: Driver’s Seat Memory
305A/7.5A2002-2005 (7.5A): Horn for Antitheft Alarm System, Tilt Sensor, Interior Movement Detector, Electrochromic Interior Rear View Mirror.
2006-2008 (5A): Dynamic Stability Control (DSC)
3120ARoadster: Convertible Top Module
327.5A2002-2005: Sequential Manual Transmission (SMG).
2006-2008: Digital Motor Electronics (DME) Control Unit
3310AFuel Pump Relay, Secondary Air Pump Relay, E-Box Fan, Diagnostic Module for Fuel Tank Leakage (2002-2004)
34– –
35– –
3615AFront Fog Lights Relay
3715AHorn Relay
3830AWiper Relay №1 & 2
397.5A2002-2005: Heating/Air Conditioning System.
2006-2008: Heating/Air Conditioning System, Siren and Tilt Alarm  Sensor, Interior Movement Detector, Electrochromic Interior Rear View Mirror
4030AHeadlight Washer Pump Relay
415ADriver’s Window Motor, Passenger’s Window Motor
4230A/40ADynamic Stability Control (DSC) (2002-2005 – 30A; 2006-2008 – 40A)
4320A/30ADynamic Stability Control (DSC) (2002-2005 – 30A; 2006-2008 – 20A)
445A2006-2008: Fuel Pump Control (EKPS)
4510A2002-2005: Safety and Information Module.
2006-2008: Tyre Pressure Control (RDC)
4630AGeneral Module Control Unit
477.5ANavigation System, Radio, Basic Interface Telephone, Telephone Transceiver, Eject Box (2002-2005), Voice Control System
487.5ACD Changer
4910ACentral Information Display (CID), Navigation System, Video Module, Basic Interface Telephone (Japan), Compensator (except Japan), Eject Box (except Japan), Telephone Transceiver (except Japan), Voice Control System (except Japan)
5030ARadio, Amplifier
51– –
52– –
53– –
5440AIgnition Switch
5540ARoadster: Convertible Top Relay №:1 & 2
5650ASecondary Air Pump Relay
5740ABlower Output Stage
5840AIgnition Switch
5940ALight Switch Cluster
6040ALight Switch Cluster
6160AElectric Fan
62– –
6360A/80AB+ Potential Distributor (2002-2005 – 80A; 2006-2008 – 60A).
N52 (60A): B+ Potential Distributor, Integrated Supply Module (IVM), Fuel Injectors Relay, Digital Motor Electronics (DME) Control Unit, DME Relay, Variable Valve Gear Relay
64100AElectronic Power Steering (EPS)
65– –

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