BMW 840i 2018-present Electrical Specifications
Discover the electrical specifications for the 2018-Present BMW 840i, including battery, alternator, and wiring details. Essential for technicians and enthusiasts.
Electrical Specifications Overview Specifications
This document provides a comprehensive overview of the electrical specifications for the 2018-Present BMW 840i. It includes detailed information about the vehicle's electrical systems, components, and technical specifications. Use this guide to understand the electrical architecture, battery systems, charging mechanisms, and other related details. This document is designed to assist engineers, technicians, and enthusiasts in understanding and working with the electrical systems of the BMW 840i.
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Key Specifications
Battery Capacity
12.0 kWh
Electric Motor Power
83 kW
System Voltage
353 V
Charging Power (DC)
Up to 150 kW
Charging Time (0-80%)
35 minutes
Available Specifications
Battery and Charging System
This section provides detailed specifications and information about the battery and charging system of the BMW 840i. It includes battery type, capacity, charging times, and system voltages.
Battery and Charging System
This section provides detailed specifications and information about the battery and charging system of the BMW 840i. It includes battery type, capacity, charging times, and system voltages.
Battery Specifications
- Battery Type: Lithium-ion
- Nominal Capacity: 12.0 kWh
- Voltage: 353 V
- Cells: 96
- Weight: Approximately 220 lbs
- Location: Under the rear seats
Charging System Details
- Charging Port: Type 2 (Europe) or SAE J1772 (North America)
- On-board Charger: 7.4 kW
- DC Fast Charging: Up to 150 kW
- Charging Time (0-80%): 35 minutes (DC Fast Charging)
- Charging Time (0-100%): 5.5 hours (AC, 7.4 kW)
Electrical Powertrain
This section outlines the electrical powertrain components, including the electric motor, power electronics, and hybrid system details.
Electrical Powertrain
This section outlines the electrical powertrain components, including the electric motor, power electronics, and hybrid system details.
Electric Motor Specifications
- Motor Type: Synchronous electric motor
- Power: 83 kW
- Torque: 265 Nm
- Speed: Up to 12,000 rpm
- Efficiency: >90%
- Cooling: Liquid-cooled
Power Electronics
- Inverter Type: IGBT (Insulated Gate Bipolar Transistor)
- Voltage: 353 V
- Current: Up to 150 A
- Power: 50 kW
- Efficiency: >95%
- Thermal Management: Integrated cooling system
Wiring and Connectivity
This section provides details about the wiring harness, communication protocols, and connectivity features of the BMW 840i.
Wiring and Connectivity
This section provides details about the wiring harness, communication protocols, and connectivity features of the BMW 840i.
Wiring Harness
- Total Length: Approximately 3,000 meters
- Weight: Around 100 kg
- Material: Copper core with PVC insulation
- Connectors: Sealed and waterproof
- Redundancy: Dual-channel wiring for critical systems
Communication Protocols
- CAN Bus: Up to 1 Mbps
- LIN Bus: Up to 19.2 kbps
- FlexRay: Up to 10 Mbps
- Ethernet: 100Base-TX
- Wireless: Bluetooth 5.0 and Wi-Fi 5
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Component Specifications
Overview
- Type
- High-Voltage 48V Electrical Architecture
- Configuration
- Integrated with 12V system
- Platform
- BMW CLAR (Cluster Architecture) Platform
- Material
- Copper wiring harness
- Location
- Main components located in engine compartment
Dimensions
- Battery Capacity
- 20 Ah (Ampere-hours)
- Battery Weight
- 13.2 lbs (6 kg)
- Battery Dimensions
- 11.8 x 6.8 x 7.8 in (300 x 173 x 198 mm)
- Alternator Power
- 2.4 kW
- Alternator Weight
- 15.4 lbs (7 kg)
- inverter Power
- Up to 11 kW
- inverter Weight
- 33.7 lbs (15.3 kg)
- Electric Motor Power
- 11 hp (8 kW)
Materials
- Wiring Harness
- Copper for high efficiency
- Battery Cells
- Lithium-ion technology
- Electric Motor Magnets
- Neodymium magnets
- Housing
- High-strength aluminum alloy
- Thermal Management
- Aluminum heat exchangers
Features
- Driver Assistance
-
- Adaptive Cruise Control with Stop & Go
- Lane Keeping Assistant
- Traffic Jam Assistant
- Active Blind Spot Detection
- infotainment
-
- 10.25-inch touchscreen display
- Gesture control
- BMW iDrive 7.0 system
- Wireless Apple CarPlay and Android Auto
- Powertrain
-
- Hybrid-specific powertrain management
- eDrive exterior sound
- Automatic Start/Stop function
- Coasting in Comfort mode
- Lighting
-
- Adaptive LED Headlights
- Icon Adaptive Full LED Headlights
- Dynamic Light Control
- LaserLight technology
Safety Features
- Airbags
-
- Driver and passenger front airbags
- Side airbags integrated into seats
- Head airbags for front and rear
- Knee airbags for driver and passenger
- Collision Mitigation
-
- Active Driving Assistant
- City Collision Mitigation
- Frontal Collision Warning
- Automatic Emergency Braking
- Theft Protection
-
- Anti-theft alarm system
- Remote keyless entry
- Engine immobilizer
- BMW Assist eCall
Comfort Features
- Seating
-
- Heated front seats
- Ventilated front seats
- Multi-contour seats
- Massage function for front seats
- Climate Control
-
- 4-zone automatic climate control
- Air quality sensor
- Automatic recirculation
- Climate Comfort package
- Steering Wheel
-
- Heated steering wheel
- Steering wheel adjustment with memory
- Sensors for driver attention
- Integrated controls for systems
Accessories
- Charging
-
- 120V portable charging cable
- Wallbox charging station
- Public charging station compatibility
- Charging status indicator
- Connectivity
-
- Wireless smartphone charging tray
- USB ports with 2.1A charging
- BMW ConnectedDrive services
- Over-the-air updates capability
- Performance
-
- Dinantronics Performance Tuner
- BMW M Performance accessories
- High-performance battery options
- AKG Surround Sound System upgrade
Maintenance
- Service interval
- Every 5,000 miles or 6 months
- Service Items
-
- Battery health check
- Wiring harness inspection
- Alternator and inverter testing
- Electric motor performance check
- Software updates
- Maintenance Notes
- Recommended to use BMW-approved parts and follow scheduled maintenance intervals for optimal performance and reliability.
Warranty
- New Vehicle
- Coverage: 4 years / 50,000 milesDescription: Bumper-to-bumper warranty
- Powertrain
- Coverage: 4 years / 50,000 milesDescription: Powertrain limited warranty
- Battery
- Coverage: 8 years / 100,000 milesDescription: High-voltage battery warranty
- Maintenance
- Coverage: 3 years / 36,000 milesDescription: Maintenance program included
Production Details
- Manufacturer
- BMW Group
- Manufacturing Process
-
- Robotic assembly for wiring harness
- Laser welding for battery cells
- Automated testing for electrical components
- Hand-assembly for critical systems
- Quality Control
- Process: Automated inspection and testingCertifications: ISO 9001, IATF 16949
- Sustainability
-
- Renewable energy in production
- Recycling of materials
- Reduced water consumption
- Carbon neutral manufacturing
- Production Metrics
- Annual Production: Over 150,000 unitsQuality Rate: 99% defect-free rateEfficiency: 20% reduction in production time
Service Information for electrical Service
Maintenance and service requirements specific to this component
- Inspect battery terminals and connections
- Check wiring harness for damage
- Test alternator and inverter function
- Update software if available
- Check electric motor performance
Essential to maintain electrical system health and prevent unexpected failures.
- Deep cycle battery test
- Inspect high-voltage cables
- Check electric motor brushes
- Test inverter cooling system
- Inspect charging system
Special tools may be required for high-voltage system checks.
- Replace air filter for electric motor
- Inspect and clean electrical connectors
- Test battery capacity and health
- Check for software updates
- Inspect and replace fuses as needed
Critical to perform major service to ensure long-term reliability and performance.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the technical specifications of the electrical system in the 2018-Present BMW 840i?
What are the technical specifications of the electrical system in the 2018-Present BMW 840i?
The 2018-Present BMW 840i features a sophisticated electrical system with a 12V lead-acid battery, a 180A alternator, and advanced electronics. The system supports features like adaptive LED headlights, a high-resolution infotainment system, and driver-assistance technologies. Compatibility is ensured with BMW-approved accessories and components to maintain system integrity and performance.
Q2 What are the maintenance requirements for the electrical system?
What are the maintenance requirements for the electrical system?
Regular maintenance includes checking the battery terminals for corrosion, ensuring proper charging levels, and inspecting wiring and connectors for damage. The alternator belt should be replaced every 50,000 miles, and the battery should be tested every 3 years or 36,000 miles. Adhere to the maintenance schedule outlined in the owner's manual for optimal performance.
Q3 How do I install or replace electrical components?
How do I install or replace electrical components?
When replacing electrical components, disconnect the battery to prevent damage or injury. Use BMW-specific tools and follow the detailed instructions in the service manual. Ensure all connections are secure and test the system post-installation. For complex systems, consult a certified BMW technician to avoid malfunctions.
Q4 How do I troubleshoot common electrical issues?
How do I troubleshoot common electrical issues?
Start by checking the battery and charging system for faults. Use a multimeter to test voltage and current. Inspect fuses and relays for blown or damaged components. Consult the trouble code reader if the issue persists, and refer to the wiring diagram in the service manual for guidance. Addressing issues promptly prevents further damage.
Q5 How can I optimize the electrical system's performance?
How can I optimize the electrical system's performance?
Optimize performance by using high-quality, BMW-approved components. Keep the battery charged and avoid deep discharges. Minimize the use of high-drain accessories when the engine is off. Regularly update software to ensure all systems function optimally. Proper maintenance enhances reliability and efficiency.
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 840i Electrical System Service Manual
Coming SoonDetailed guide covering diagnostics, repairs, and component replacement for the electrical system.
Technical Bulletin: Electrical System Updates
Coming SoonLatest updates and bulletins for electrical system improvements and known issues.
BMW 840i Electrical Components Catalog
Coming SoonComprehensive list of genuine parts for the electrical system.
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Technical Information
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