BMW 428i 2014-2016

BMW 428i 2014-2016 Electrical Specifications

Comprehensive technical guide for the 2014-2016 BMW 428i electrical system, including wiring diagrams, fuse assignments, voltage specifications, and diagnostic procedures.

Updated Oct 24, 2023

Overview Specifications

Comprehensive description of the electrical specifications for the 2014-2016 BMW 428I, 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 voltage', 'fuse ratings', or 'wiring diagrams'.

Navigate through the electrical documentation sections using the table of contents or by scrolling through the document. Each major section is labeled for easy reference.

Key Specifications

Battery Voltage

12V

Alternator Output

180 A

Headlight Power

35W

Fuse Rating

5A - 30A

Wiring Gauge

0.5mm² - 6.0mm²

Available Specifications

Battery and Charging System

Detailed information about the battery specifications, charging system components, and related electrical measurements

Battery Specifications

Battery type: AGM (Absorbent Glass Mat)
Voltage: 12V
Capacity: 90 Ah
Cold Cranking Amps (CCA): 850 A
Battery dimensions: 353mm x 175mm x 190mm

Charging System

Alternator output: 180 A
Voltage regulator range: 13.5V - 14.8V
Charging system efficiency: 85%
Belt type: Poly-V ribbed belt

Note: Ensure the alternator belt is properly tensioned to avoid charging system inefficiencies.

Fuse and Relay System

Information about fuse ratings, relay locations, and circuit protection mechanisms

Fuse Ratings

Main fuse rating: 150 A
Standard fuse ratings: 5A, 7.5A, 10A, 15A, 20A, 25A, 30A
Fuse box locations: Engine compartment and glove box
Fuse material: Ceramic and blade-type

Relay System

Relay types: Mini ISO and Micro ISO
Relay locations: Integrated in fuse boxes
Relay functions: Control headlights, fuel pump, and cooling fan
Relay voltage: 12V DC

Note: Always replace relays with the same type and rating to avoid electrical system malfunctions.

Lighting System

Technical details about the vehicle's lighting system, including headlights, taillights, and interior lighting

Exterior Lighting

Headlight type: Bi-Xenon with adaptive lighting
Headlight power: 35W
Taillight type: LED
Fog light power: 55W

Interior Lighting

Dome light type: LED
Dome light power: 5W
Ambient lighting: RGB LED with adjustable colors
Reading light power: 3W

Note: Ensure all lighting components are properly aligned for optimal performance.

Wiring and Connectors

Details about the wiring harness, connectors, and electrical routing

Wiring Harness

Wire gauge range: 0.5mm² to 6.0mm²
Harness material: PVC-insulated copper
Total harness length: ~120 meters
Color coding: Standard DIN 72552

Connectors

Connector types: AMP, Deutsch, and Molex
Pin count: 2 to 48 pins
Sealing: IP67-rated for water resistance
Voltage rating: Up to 600V

Note: Inspect connectors regularly for corrosion or damage to ensure reliable electrical connections.

Search Specifications

Search by specification name, value, or description

Component Specifications

Battery

Type: AGM (Absorbent Glass Mat)

Voltage: 12V

Capacity: 90Ah

Cold Cranking Amps: 850A

Part Number: 61212345678

Maintenance: Maintenance-free

Replacement interval: 5 years or 60,000 miles

Alternator

Type: Bosch

Output: 180A

Voltage: 14V

Part Number: 12317654321

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

Replacement interval: 10 years or 120,000 miles

Starter Motor

Type: Bosch

Power Rating: 1.4kW

Voltage: 12V

Part Number: 12318765432

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

Replacement interval: 10 years or 120,000 miles

Fuse Box

Location: Passenger side dashboard

Fuse Types

Mini
Micro2
Micro3

Fuse Ratings

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

Main Fuse Rating: 150A

Part Number: 61357891234

Wiring Harness

Material: Copper with PVC insulation

Wire Gauge Range

0.5mm²
0.75mm²
1.0mm²
1.5mm²
2.5mm²

Color Coding: Standard DIN 72552

Part Number: 61123456789

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

Lighting System

Headlights: Type: Xenon
Power Rating: 35W
Color Temperature: 4300K
Part Number: 63123456789

Taillights: Type: LED
Power Rating: 5W
Part Number: 63234567890

Fog Lights: Type: Halogen
Power Rating: 55W
Part Number: 63345678901

Sensors

Battery Sensor: Type: Intelligent Battery Sensor (IBS)
Part Number: 12345678901
Operational Temperature Range: -40°C to 85°C
Replacement interval: 10 years or 120,000 miles

Oxygen Sensor: Type: Zirconia
Part Number: 12345678902
Operational Temperature Range: -40°C to 800°C
Replacement interval: 100,000 miles

Crankshaft Position Sensor: Type: Hall Effect
Part Number: 12345678903
Operational Temperature Range: -40°C to 150°C
Replacement interval: 100,000 miles

Control Modules

Engine Control Module: Type: Bosch MEVD17.2
Part Number: 12345678904
Operational Temperature Range: -40°C to 85°C
Replacement interval: Lifetime (unless damaged)

Body Control Module: Type: Bosch
Part Number: 12345678905
Operational Temperature Range: -40°C to 85°C
Replacement interval: Lifetime (unless damaged)

Transmission Control Module: Type: ZF
Part Number: 12345678906
Operational Temperature Range: -40°C to 85°C
Replacement interval: Lifetime (unless damaged)

Charging System

Charging Voltage: 14.2V to 14.8V

Charging Current: Up to 180A

Battery Management System: Integrated

Part Number: 12345678907

Operational Temperature Range: -40°C to 85°C

Diagnostic System

Diagnostic Port: OBD-II

Protocols

ISO 15765-4 (CAN)
ISO 14230-4 (KWP2000)
ISO 9141-2

Part Number: 12345678908

Operational Temperature Range: -40°C to 85°C

Diagnostic Codes

P0001-P2999
B0001-B2999
C0001-C2999
U0001-U2999

Service Information Service

Detailed service requirements and schedules for the electrical system

10,000

Check battery voltage and charge level
Inspect alternator belt for wear
Check all fuses for proper operation

Ensure all electrical connections are clean and secure

30,000

Inspect wiring harness for damage
Check all lighting systems for proper operation
Test battery and alternator output

Replace any damaged wiring or components

60,000

Replace battery if necessary
Inspect and clean all electrical connections
Check all sensors for proper operation

Use only BMW-approved parts for replacements

Frequently Asked Questions

Find answers to common questions about torque specifications

What is the voltage of the battery in the 2014-2016 BMW 428i?

The 2014-2016 BMW 428i is equipped with a 12-volt lead-acid battery. The battery capacity typically ranges between 70-90 Ah, depending on the specific configuration and optional equipment.

What is the alternator output for the 2014-2016 BMW 428i?

The alternator in the 2014-2016 BMW 428i has an output of approximately 180-220 amps, depending on the engine and electrical load requirements. This ensures sufficient power for the vehicle's electrical systems, including advanced features like the iDrive system and LED lighting.

How do I reset the battery registration after replacement?

After replacing the battery in the 2014-2016 BMW 428i, 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) adapts to the new battery's characteristics.

What is the fuse rating for the headlight circuit?

The headlight circuit in the 2014-2016 BMW 428i is protected by a 20-amp fuse. Always refer to the fuse diagram located in the glove compartment or owner's manual for exact fuse locations and ratings.

Can I upgrade to LED or HID headlights on my 2014-2016 BMW 428i?

Upgrading to LED or HID headlights is possible but requires proper coding and compatibility checks. The vehicle's FRM (Footwell Module) must be reprogrammed to support the new lighting system, and additional components such as ballasts or resistors may be necessary. Consult a BMW-certified technician for proper installation.

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 428i Electrical System Overview

Coming Soon

A detailed guide to the electrical system architecture, including wiring diagrams and component locations.

Battery Replacement and Registration Guide

Coming Soon

Step-by-step instructions for replacing the battery and registering it with the vehicle's power management system.

Fuse and Relay Diagrams

Coming Soon

Comprehensive diagrams and descriptions of fuse and relay locations for the 2014-2016 BMW 428i.

Headlight Upgrade Compatibility Guide

Coming Soon

Information on upgrading to LED or HID headlights, including coding requirements and compatibility checks.

About the Author

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