BMW X4 2014-2018

BMW X4 2014-2018 Electrical Specifications

Detailed technical specifications for the 2014-2018 BMW X4 electrical system, including wiring diagrams, fuse layouts, and advanced system configurations. Essential for technicians and enthusiasts.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the electrical specifications for the 2014-2018 BMW X4, including key features, measurements, and technical details

How to Use

Use the search function to locate specific electrical specifications by entering keywords such as 'battery capacity', 'alternator output', or 'fuse ratings'.

Navigate through the electrical documentation sections using the table of contents or by clicking on the section headers in the sidebar.

Key Specifications

Battery Capacity

90 Ah

Alternator Output

180 A

Headlight Wattage (Xenon)

35 W

Fuse Rating (Maxi)

80 A

Wire Length

1.2 km

Available Specifications

Battery and Charging System

Detailed information about the battery, alternator, and charging system specifications for the 2014-2018 BMW X4.

Battery Specifications

Battery type: AGM (Absorbent Glass Mat)
Battery capacity: 90 Ah
Cold cranking amps (CCA): 850 A
Voltage: 12 V
Battery weight: 22.5 kg

Alternator Specifications

Alternator type: Bosch 180 A
Output voltage: 14.4 V
Maximum output current: 180 A
Efficiency: 85%
Weight: 6.8 kg

Note: The alternator is designed to support the vehicle's high electrical load, including advanced driver-assistance systems.

Fuse and Relay System

Technical details about the fuse and relay system, including ratings and locations.

Fuse Box Locations

Primary fuse box: Located in the glove compartment
Secondary fuse box: Located in the trunk
Engine compartment fuse box: Located near the battery
Total number of fuses: 42

Fuse Ratings

Standard fuse ratings: 5 A, 7.5 A, 10 A, 15 A, 20 A, 25 A, 30 A
Maxi fuse ratings: 40 A, 50 A, 60 A, 80 A
Relay types: Mini, Micro, and Standard
Fuse material: Tin-plated copper

Note: Always replace fuses with the same rating to avoid electrical system damage.

Lighting System

Specifications for the exterior and interior lighting systems, including bulb types and wattages.

Exterior Lighting

Headlight type: Bi-Xenon or LED (depending on trim)
Headlight wattage: 35 W (Xenon), 25 W (LED)
Fog light wattage: 55 W
Tail light type: LED
Turn signal wattage: 21 W

Interior Lighting

Dome light type: LED
Dome light wattage: 5 W
Reading light wattage: 3 W
Ambient lighting: RGB LED with customizable colors
Glove box light wattage: 1.5 W

Note: LED lighting provides longer lifespan and lower energy consumption compared to traditional bulbs.

Wiring and Connectors

Technical details about the wiring harnesses and connectors used in the electrical system.

Wiring Harness

Total wire length: Approximately 1.2 km
Wire gauge range: 0.5 mm² to 16 mm²
Insulation material: Cross-linked polyethylene
Color coding: Standardized for easy identification
Shielding: Used for CAN bus and sensor wires

Connector Types

Waterproof connectors: Used in engine and exterior lighting systems
Pin count: Ranges from 2 to 48 pins
Material: Thermoplastic with gold-plated contacts
Locking mechanism: Push-pull or screw-type
Temperature rating: -40°C to 125°C

Note: Ensure connectors are properly seated to prevent electrical faults.

Search Specifications

Search by specification name, value, or description

Component Specifications

Battery

Type: AGM (Absorbent Glass Mat)

Capacity: 90 Ah

Voltage: 12 V

Cold Cranking Amps: 850 A

Part Number: 61217650000

Maintenance: Maintenance-free

Replacement interval: 5 years or 60,000 miles

Safety Notes: Ensure ignition is off before disconnecting to avoid electrical system damage

Alternator

Type: Bosch

Output: 180 A

Voltage: 14 V

Part Number: 12317650000

Operational Temperature Range: -40°C to 120°C

Efficiency: 85%

Replacement interval: 100,000 miles

Diagnostic Specifications: Voltage Output: 13.5 V to 14.5 V
Ripple Voltage: less than 0.5 V AC

Starter Motor

Type: Bosch

Power: 1.4 kW

Voltage: 12 V

Part Number: 12417650000

Operational Temperature Range: -40°C to 120°C

Diagnostic Specifications: Current Draw: less than 200 A
Cranking Speed: 100-150 RPM

Fuse Box

Location: Passenger compartment and engine bay

Fuse Types

Mini
Micro2
Micro3

Fuse Ratings

5 A
7.5 A
10 A
15 A
20 A
25 A
30 A

Main Fuse: 150 A

Part Number: 61317650000

Safety Notes: Always replace with the same rating to avoid electrical system damage

Wiring Harness

Material: Copper with PVC insulation

Wire Gauge Range

0.5 mm²
1.0 mm²
2.5 mm²
4.0 mm²

Color Coding: Standard BMW color codes

Part Number: 61117650000

Operational Temperature Range: -40°C to 105°C

Maintenance: Inspect for wear and corrosion every 30,000 miles

Lighting System

Headlights: Type: Xenon or LED
Power: 35 W (Xenon), 25 W (LED)
Part Number: 63117650000 (Xenon), 63217650000 (LED)
Beam Range: Up to 500 meters
Diagnostic Specifications: Voltage: 12 V, Current Draw: 3 A (Xenon), 2 A (LED)

Taillights: Type: LED
Power: 10 W
Part Number: 63317650000
Diagnostic Specifications: Voltage: 12 V, Current Draw: 0.8 A

Sensors

Oxygen Sensor: Type: Heated
Part Number: 11787650000
Operational Temperature Range: -40°C to 800°C
Diagnostic Specifications: Voltage Output: 0.1 V to 0.9 V, Response Time: less than 100 ms

Crankshaft Position Sensor: Type: Magnetic
Part Number: 12147650000
Operational Temperature Range: -40°C to 150°C
Diagnostic Specifications: Resistance: 500-1500 ohms, Signal Frequency: 1-5 kHz

Control Modules

Engine Control Module: Type: Bosch MEVD17.2
Part Number: 12347650000
Operational Temperature Range: -40°C to 85°C
Diagnostic Specifications: Voltage input: 12 V, Current Draw: less than 1 A

Body Control Module: Type: Bosch
Part Number: 61347650000
Operational Temperature Range: -40°C to 85°C
Diagnostic Specifications: Voltage input: 12 V, Current Draw: less than 0.5 A

Charging System

Charging Port: Type: Type 2 (IEC 62196)
Voltage: 230 V AC
Current: 32 A
Part Number: 61417650000
Charging Time: 4 hours (0-80%)
Safety Notes: Ensure proper grounding to avoid electrical shock

Onboard Charger: Type: Integrated
Power: 7.4 kW
Part Number: 61517650000
Efficiency: 92%
Diagnostic Specifications: Voltage Output: 400 V DC, Current Output: 18.5 A

Grounding System

Ground Straps: Material: Copper
Length: 30 cm
Part Number: 61617650000
Resistance: less than 0.1 ohms
Maintenance: Inspect for corrosion every 30,000 miles

Ground Points: Locations: Engine block, Chassis, Transmission
Part Number: 61717650000
Diagnostic Specifications: Resistance: less than 0.5 ohms

Service Information Service

Detailed service requirements and schedules for the electrical system

30,000

Inspect battery terminals for corrosion
Check alternator belt tension
Test starter motor operation
Inspect wiring harness for wear and damage

Replace any damaged components immediately

60,000

Replace battery if necessary
Inspect and clean grounding points
Test all sensors for proper operation
Check fuse box for blown fuses

Use only OEM parts for replacements

100,000

Replace alternator if necessary
Inspect and replace starter motor if necessary
Check control modules for software updates
Inspect charging system components

Perform diagnostic tests using BMW-approved tools

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the voltage of the battery in the 2014-2018 BMW X4?

The 2014-2018 BMW X4 is equipped with a 12-volt lead-acid battery. The exact specifications may vary depending on the trim level and optional equipment, but the standard battery capacity is typically 70-90 Ah.

What type of alternator is used in the 2014-2018 BMW X4?

The 2014-2018 BMW X4 uses a Bosch or Valeo alternator, depending on the model and engine type. The alternator output ranges from 150 to 220 amps, ensuring sufficient power for the vehicle's electrical systems, including advanced features like iDrive and adaptive lighting.

How do I reset the battery registration after replacement?

After replacing the battery in the 2014-2018 BMW X4, you must register the new battery using a BMW-specific diagnostic tool such as ISTA or a compatible OBD-II scanner with BMW software. This ensures the vehicle's power management system (IBS) correctly monitors the battery's state of charge and optimizes charging cycles.

What is the fuse rating for the headlights in the 2014-2018 BMW X4?

The fuse rating for the headlights in the 2014-2018 BMW X4 is typically 15-20 amps, depending on the lighting configuration (halogen or LED). Always refer to the fuse box diagram located in the owner's manual or on the fuse box cover for exact specifications.

Can I upgrade the electrical system to support aftermarket accessories?

Upgrading the electrical system in the 2014-2018 BMW X4 to support aftermarket accessories is possible but requires careful planning. Ensure the alternator and battery can handle the additional load, and use a professional-grade power distribution module to avoid overloading the factory wiring. Consult a BMW-certified technician to ensure compatibility and avoid voiding the warranty.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

BMW X4 Electrical System Overview

Coming Soon

A detailed guide to the electrical system components, including wiring diagrams, fuse layouts, and troubleshooting tips.

Battery Replacement and Registration Guide

Coming Soon

Step-by-step instructions for replacing and registering a new battery in the 2014-2018 BMW X4, including required tools and software.

Alternator Testing and Replacement

Coming Soon

Learn how to test and replace the alternator in the 2014-2018 BMW X4, including specifications and common failure symptoms.

Fuse Box Diagram and Troubleshooting

Coming Soon

Access the complete fuse box diagram for the 2014-2018 BMW X4, along with troubleshooting tips for common electrical issues.

About the Author

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