Mercedes-Benz Mercedes GLA 2014-2020 Electrical Specifications
Explore the comprehensive electrical specifications for the 2014-2020 Mercedes-Benz GLA. This guide covers battery systems, alternator output, wiring diagrams, fuse layouts, and lighting systems, providing essential insights for diagnostics, maintenance, and repairs.
Overview Specifications
This document provides detailed electrical specifications for the 2014-2020 Mercedes-Benz GLA. It covers key components such as the battery, alternator, lighting systems, and onboard electronics. Use this guide to understand the electrical architecture, troubleshoot issues, or identify compatible parts. The document is organized into sections for easy navigation, with a quick reference table for key specifications.
How to Use
Use the search function to find specific terms or components. Enter keywords like 'battery' or 'headlights' to locate relevant sections quickly.
Navigate through sections using the table of contents. Each section is divided into subsections with detailed technical points for easy reference.
Key Specifications
Battery Voltage
12V
Alternator Output
150A
Headlight Type
LED/Halogen
Infotainment Display
7-inch
Ambient Lighting Colors
12 options
Available Specifications
Battery and Charging System
This section covers the battery specifications, alternator output, and charging system details for the Mercedes GLA. It includes information on voltage, capacity, and maintenance requirements.
Battery and Charging System
This section covers the battery specifications, alternator output, and charging system details for the Mercedes GLA. It includes information on voltage, capacity, and maintenance requirements.
Battery Specifications
- 12V lead-acid battery
- Capacity: 70Ah (standard)
- Cold cranking amps (CCA): 760A
- Maintenance-free design
- Replacement interval: 4-6 years
- Compatible with AGM technology
Alternator and Charging
- Alternator output: 150A
- Voltage regulator integrated
- Smart charging system for efficiency
- Supports start-stop functionality
- Diagnostic port for troubleshooting
Lighting Systems
This section details the exterior and interior lighting systems, including headlights, taillights, and ambient lighting. It covers bulb types, wattage, and advanced features.
Lighting Systems
This section details the exterior and interior lighting systems, including headlights, taillights, and ambient lighting. It covers bulb types, wattage, and advanced features.
Exterior Lighting
- LED headlights (standard on higher trims)
- Halogen bulbs (base model)
- Adaptive headlights with cornering function
- LED daytime running lights
- Automatic high-beam assist
- LED taillights with dynamic indicators
Interior Lighting
- Ambient lighting with multiple color options
- LED map lights
- Footwell lighting
- Illuminated vanity mirrors
- Adjustable brightness settings
Onboard Electronics
This section provides information on the infotainment system, driver assistance features, and other electronic components. It includes details on connectivity, sensors, and control modules.
Onboard Electronics
This section provides information on the infotainment system, driver assistance features, and other electronic components. It includes details on connectivity, sensors, and control modules.
Infotainment System
- 7-inch touchscreen display
- COMAND system with navigation
- Bluetooth and USB connectivity
- Apple CarPlay and Android Auto compatibility
- Voice control functionality
- Optional Harman Kardon sound system
Driver Assistance Features
- Parking sensors with 360-degree camera
- Blind-spot monitoring
- Lane-keeping assist
- Adaptive cruise control
- Collision prevention assist
- Traffic sign recognition
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Component Specifications
Overview
- Type
- 12V Electrical System
- Configuration
- Single Battery with Alternator
- Platform
- MFA (Modular Front Architecture)
- Material
- Copper Wiring, Aluminum Components
- Location
- Front Engine Compartment
Dimensions
- Battery Length
- 10.2 in (260 mm)
- Battery Width
- 6.9 in (175 mm)
- Battery Height
- 7.5 in (190 mm)
- Alternator Diameter
- 5.9 in (150 mm)
- Alternator Weight
- 8.8 lbs (4 kg)
- Wiring Length
- 328 ft (100 m)
- Fuse Box Dimensions
- 6.3 x 4.7 x 2.4 in (160 x 120 x 60 mm)
Materials
- Battery Case
- Polypropylene
- Wiring
- Copper with PVC Insulation
- Alternator Housing
- Aluminum Alloy
- Fuse Box
- Thermoplastic
- Connectors
- Nickel-Plated Brass
Features
- Lighting
-
- LED Daytime Running Lights
- Adaptive Highbeam Assist
- Automatic Headlight Control
- Ambient Interior Lighting
- infotainment
-
- COMAND System with Touchpad
- Bluetooth Connectivity
- USB and AUX Inputs
- Voice Control
- Safety
-
- Electronic Stability Program (ESP)
- Tire Pressure Monitoring System
- Parking Assist with Sensors
- Blind Spot Monitoring
- Comfort
-
- Dual-Zone Climate Control
- Heated Front Seats
- Power Windows with One-Touch
- Keyless Go
- Power Management
-
- Energy Recovery System
- Start-Stop Function
- Battery Monitoring System
- Alternator Load Management
Safety Features
- Circuit Protection
-
- Multiple Fuse Boxes
- Circuit Breakers
- Overload Protection
- Emergency
-
- Automatic Hazard Lights
- Emergency Call System
- Battery Disconnect in Crash
- Monitoring
-
- Battery Voltage Monitoring
- Alternator Output Monitoring
- Short Circuit Detection
Comfort Features
- Climate Control
-
- Automatic Temperature Control
- Rear Ventilation
- Air Quality Sensor
- Seating
-
- Heated Seats
- Memory Function for Driver Seat
- Power Adjustable Seats
- Lighting
-
- Ambient Lighting with Multiple Colors
- Reading Lights
- Puddle Lights
- Convenience
-
- Keyless Entry
- Power Tailgate
- Automatic Dimming Mirrors
Accessories
- Charging
-
- USB Charging Ports
- Wireless Charging Pad
- 12V Power Outlet
- Audio
-
- Burmester Surround Sound System
- Headphone Jacks
- SD Card Reader
- Navigation
-
- GPS Navigation System
- Traffic Information
- Map Updates
Maintenance
- Service interval
- Every 10,000 miles or 12 months
- Service Items
-
- Battery Health Check
- Alternator Belt Inspection
- Fuse Box Inspection
- Wiring Harness Check
- Ground Connections Check
- Maintenance Notes
- Ensure all electrical connections are clean and secure. Use only OEM parts for replacements.
Warranty
- Battery Warranty
- Miles: 36,000Years: 3Coverage: Replacement for defects
- Alternator Warranty
- Miles: 50,000Years: 4Coverage: Repair or replacement
- Electronics Warranty
- Miles: 50,000Years: 4Coverage: Diagnosis and repair
- Warranty Terms
- Coverage includes parts and labor. Excludes wear and tear items.
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Automated Wiring Harness Assembly
- Precision Soldering
- Quality Control Testing
- Quality Control
- Testing: Voltage Drop Testing, Short Circuit Testing, Load TestingStandards: ISO 9001, ISO 14001
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Production
- Reduced Emissions
- Production Metrics
- Units Per Year: 150,000Defect Rate: 0.1%Energy Usage: 500 kWh per unit
Service Information for Electrical Service
Maintenance and service requirements specific to the electrical system
- Inspect battery terminals and connections
- Check alternator belt tension
- Test battery voltage and charge
- Inspect wiring harness for damage
- Verify operation of all lights
Ensure all connections are clean and secure.
- Perform alternator output test
- Check ground connections
- Inspect fuse box for corrosion
- Test all electrical accessories
- Verify operation of safety systems
Use diagnostic tools for accurate testing.
- Replace alternator belt if necessary
- Check battery health and replace if needed
- Inspect and clean all electrical connectors
- Test all sensors and control units
- Verify operation of infotainment system
Replace only with OEM parts to ensure compatibility.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the electrical system specifications for the 2014-2020 Mercedes GLA?
What are the electrical system specifications for the 2014-2020 Mercedes GLA?
The 2014-2020 Mercedes GLA features a 12-volt electrical system with a 70-90 Ah battery, depending on the model. It supports advanced features like LED lighting, infotainment systems, and driver-assistance technologies. The alternator output ranges from 150-180 amps. Compatibility with aftermarket accessories depends on the specific model year and trim level. Always verify voltage and current requirements before installation.
Q2 What maintenance is required for the electrical system of the Mercedes GLA?
What maintenance is required for the electrical system of the Mercedes GLA?
Regular maintenance includes checking the battery health, ensuring proper alternator function, and inspecting wiring for wear or corrosion. The battery should be tested annually, and terminals cleaned to prevent voltage drops. Fuses and relays should be inspected every 30,000 miles. Software updates for the electrical control units are recommended during routine service visits.
Q3 How do I replace the battery in a 2014-2020 Mercedes GLA?
How do I replace the battery in a 2014-2020 Mercedes GLA?
To replace the battery, first, disconnect the negative terminal, then the positive terminal. Remove the battery hold-down clamp and carefully lift the battery out. Install the new battery, secure it with the clamp, and reconnect the terminals in reverse order. Reset the battery management system using a diagnostic tool to ensure proper functionality.
Q4 What should I do if the electrical system in my Mercedes GLA malfunctions?
What should I do if the electrical system in my Mercedes GLA malfunctions?
Start by checking the battery voltage with a multimeter; it should read 12.6V when off and 13.7-14.7V when running. Inspect fuses and relays for damage. If issues persist, use a diagnostic scanner to read fault codes from the onboard computer. Common problems include faulty alternators, bad grounds, or software glitches requiring updates.
Q5 How can I optimize the electrical system performance in my Mercedes GLA?
How can I optimize the electrical system performance in my Mercedes GLA?
Ensure the battery is fully charged and terminals are clean. Use high-quality replacement parts and avoid overloading the system with aftermarket accessories. Regularly update the vehicle's software to improve efficiency. Consider upgrading to a higher-capacity battery if using power-intensive accessories. Monitor the alternator output to ensure it meets the vehicle's demands.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Mercedes GLA 2014-2020 Service Manual
Coming SoonComprehensive guide covering electrical system maintenance, troubleshooting, and repair procedures for the 2014-2020 Mercedes GLA.
Technical Service Bulletin: Electrical System Updates
Coming SoonDetails software updates and fixes for common electrical system issues in the 2014-2020 Mercedes GLA.
Mercedes GLA Parts and Accessories Catalog
Coming SoonOfficial catalog listing compatible electrical components and accessories for the 2014-2020 Mercedes GLA.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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