Mercedes-Benz Mercedes R-Class 2005-2017 Electrical Specifications
Comprehensive electrical specifications for the 2005-2017 Mercedes R-Class, including battery, alternator, and wiring details. Ideal for maintenance, repair, and upgrades.
Overview Specifications
This document provides a comprehensive overview of the electrical specifications for the 2005-2017 Mercedes R-Class. It includes details on the vehicle's electrical systems, components, and key specifications. Use this guide to understand the technical aspects of the R-Class's electrical architecture, troubleshoot issues, or reference for maintenance. The document is organized into sections for easy navigation and includes a quick reference table for key specifications.
How to Use
Use the search function to quickly locate specific electrical components or systems. Enter keywords such as 'battery,' 'alternator,' or 'lighting' to find relevant information. Search results will highlight matching sections and subsections for easy access.
Navigate through the document using the section titles and subsections. Each major section covers a specific electrical aspect of the R-Class. Click on a subsection to view detailed technical points. Use the quick reference table for a summary of key specifications.
Key Specifications
Battery Voltage
12V
Alternator Output
150A to 180A
Headlight Type
Bi-xenon with LED DRL
Audio System
6-speaker standard
Display Size
7-inch
Available Specifications
Battery and Charging System
This section covers the battery, alternator, and charging system of the 2005-2017 Mercedes R-Class. Learn about the specifications, maintenance, and common issues related to these components.
Battery and Charging System
This section covers the battery, alternator, and charging system of the 2005-2017 Mercedes R-Class. Learn about the specifications, maintenance, and common issues related to these components.
Battery Specifications
- 12V lead-acid battery
- Capacity: 70Ah to 100Ah depending on model
- Cold cranking amps (CCA): 600A to 800A
- Maintenance-free design
- Battery location: Under the front passenger seat
- Optional AGM battery for higher performance
Alternator and Charging
- Output: 150A to 180A depending on model
- Voltage regulator integrated into alternator
- Charging voltage: 13.5V to 14.5V
- Belt-driven alternator with automatic tensioner
- Optional dual alternator setup for higher electrical load
Lighting System
Explore the lighting system of the Mercedes R-Class, including headlights, taillights, and interior lighting. This section provides details on bulb types, configurations, and advanced lighting technologies.
Lighting System
Explore the lighting system of the Mercedes R-Class, including headlights, taillights, and interior lighting. This section provides details on bulb types, configurations, and advanced lighting technologies.
Exterior Lighting
- Bi-xenon headlights with adaptive front lighting system (AFS)
- LED daytime running lights (DRL)
- Halogen or LED fog lights
- LED taillights with dynamic turn signals
- Automatic headlight leveling system
- Optional high-beam assist
Interior Lighting
- Ambient lighting with multi-color options
- LED reading lights in all seating rows
- Illuminated vanity mirrors
- Automatic dimming rearview mirror
- Optional panoramic sunroof with LED lighting
Infotainment and Navigation
This section details the infotainment and navigation systems of the R-Class, including audio, display, and connectivity features. Learn about the available options and their specifications.
Infotainment and Navigation
This section details the infotainment and navigation systems of the R-Class, including audio, display, and connectivity features. Learn about the available options and their specifications.
Audio System
- Standard 6-speaker audio system
- Optional Harman Kardon surround sound system
- Bluetooth audio streaming and hands-free calling
- USB and AUX input ports
- CD/DVD player with MP3 compatibility
- Optional SiriusXM satellite radio
Navigation and Display
- 7-inch central display with COMAND system
- GPS navigation with 3D maps
- Voice control for navigation and audio
- Optional rear-seat entertainment system
- Traffic information via RDS-TMC
- Optional head-up display (HUD)
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Component Specifications
Overview
- Voltage System
- 12V
- Battery Type
- AGM (Absorbent Glass Mat)
- Alternator Output
- 150A
- Wiring Harness
- Copper with PVC insulation
- Fuse Box Location
- Driver's side dashboard
Dimensions
- Battery Length
- 10.9 in (27.7 cm)
- Battery Width
- 6.8 in (17.3 cm)
- Battery Height
- 7.5 in (19.0 cm)
- Alternator Diameter
- 5.9 in (15.0 cm)
- Alternator Length
- 8.3 in (21.1 cm)
- Fuse Box Length
- 7.1 in (18.0 cm)
- Fuse Box Width
- 4.3 in (11.0 cm)
Materials
- Battery Case
- Polypropylene
- Alternator Housing
- Aluminum alloy
- Wiring
- Copper with PVC insulation
- Fuse Box
- Thermoplastic
Features
- Lighting
-
- Bi-Xenon headlights
- LED daytime running lights
- Automatic headlight leveling
- infotainment
-
- COMAND system with navigation
- Bluetooth connectivity
- SD card reader
- Auxiliary input
- Safety Systems
-
- ABS (Anti-lock Braking System)
- ESP (Electronic Stability Program)
- TPMS (Tire Pressure Monitoring System)
- Comfort
-
- Dual-zone automatic climate control
- Heated front seats
- Power windows with one-touch operation
- Convenience
-
- Keyless Go
- Power tailgate
- Rain-sensing wipers
Safety Features
- Electrical Protection
-
- Overload protection
- Short-circuit protection
- Lighting
-
- Adaptive brake lights
- Emergency brake light flashing
- Monitoring
-
- Battery monitoring system
- Alternator voltage regulation
Comfort Features
- Climate Control
-
- Rear air conditioning
- Air filtration system
- Seating
-
- Heated steering wheel
- Memory function for driver's seat
- Lighting
-
- Ambient interior lighting
- Reading lights for rear passengers
- Audio
-
- Surround sound system
- MP3 compatibility
Accessories
- Charging
-
- USB ports
- 12V power outlets
- Wireless charging pad
- Lighting
-
- LED interior light package
- Puddle lights
- Footwell lighting
- Entertainment
-
- Rear seat entertainment system
- DVD player
- Headphone jacks
Maintenance
- Service intervals
-
- Battery check every 12 months
- Alternator belt inspection every 30,000 miles
- Fuse replacement as needed
- Wiring harness inspection every 50,000 miles
- Lighting system check every 10,000 miles
- Maintenance Notes
-
- Use only AGM batteries for replacement
- Ensure proper voltage regulation during charging
- Regularly clean battery terminals
Warranty
- Battery Warranty
- Years: 4Miles: 50000Coverage: Defects in materials and workmanship
- Alternator Warranty
- Years: 3Miles: 36000Coverage: Mechanical and electrical failures
- Electrical System Warranty
- Years: 2Miles: 24000Coverage: Wiring and component failures
- Lighting Warranty
- Years: 1Miles: 12000Coverage: Bulbs and LED modules
Production Details
- Manufacturer
- Mercedes-Benz
- Manufacturing Process
-
- Automated wiring harness assembly
- Precision alternator manufacturing
- Quality-controlled battery production
- Quality Control
- Testing: Voltage regulation tests, Load testing for batteries, Insulation resistance checksStandards: ISO 9001, ISO 14001
- Sustainability
-
- Recyclable battery components
- Energy-efficient manufacturing processes
- Use of lead-free soldering
- Production Metrics
- Annual Output: 500,000 unitsDefect Rate: 0.1%Energy Consumption: 15 kWh per unit
Service Information for electrical Service
Maintenance and service requirements specific to the electrical system
- Inspect battery terminals for corrosion
- Check alternator belt tension
- Test battery voltage
- Inspect wiring harness for wear
- Check all fuses for proper operation
Ensure all connections are tight and secure
- Replace alternator belt if necessary
- Test alternator output
- Inspect grounding points
- Check lighting system functionality
- Clean battery terminals
Use manufacturer-recommended parts for replacements
- Replace battery if necessary
- Comprehensive wiring harness inspection
- Test all electrical components
- Replace fuses as needed
- Check and update software for electronic systems
Perform a full system diagnostic before major replacements
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What electrical components are compatible with the 2005-2017 Mercedes R-Class?
What electrical components are compatible with the 2005-2017 Mercedes R-Class?
The 2005-2017 Mercedes R-Class is compatible with various electrical components, including the alternator, battery, starter motor, and wiring harnesses. The alternator should match the 14V/150A specification, while the battery must be a 12V AGM type with a minimum of 70Ah capacity. Starter motors should align with the Bosch or Valeo models. Always verify part numbers with your vehicle’s VIN for compatibility.
Q2 What are the maintenance requirements for the electrical system in the Mercedes R-Class?
What are the maintenance requirements for the electrical system in the Mercedes R-Class?
Regular maintenance for the electrical system includes inspecting the battery terminals for corrosion, ensuring the alternator is charging correctly, and checking wiring for wear or damage. Replace the battery every 4-5 years or as needed. Test the alternator output annually and inspect fuses and relays during routine service. Follow the Mercedes-Benz maintenance schedule for optimal performance.
Q3 How do I replace the alternator in a 2005-2017 Mercedes R-Class?
How do I replace the alternator in a 2005-2017 Mercedes R-Class?
To replace the alternator, disconnect the battery and remove the negative terminal. Loosen the serpentine belt tensioner and remove the belt. Unbolt the alternator, disconnect its electrical connections, and remove it from the vehicle. Install the new alternator, reconnect the electrical connections, and reinstall the serpentine belt. Finally, reconnect the battery and test the system.
Q4 What should I do if my Mercedes R-Class electrical system is malfunctioning?
What should I do if my Mercedes R-Class electrical system is malfunctioning?
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 faults. Test the alternator output and check for loose or corroded connections. Use an OBD-II scanner to read fault codes. If issues persist, consult a certified technician for further diagnosis.
Q5 How can I optimize the electrical system performance in my Mercedes R-Class?
How can I optimize the electrical system performance in my Mercedes R-Class?
To optimize performance, use high-quality AGM batteries and ensure proper charging voltage. Regularly clean battery terminals and inspect wiring for damage. Upgrade to a high-output alternator if additional electrical loads are added. Use energy-efficient LED bulbs and avoid overloading the system with aftermarket accessories. Follow the manufacturer’s guidelines for maintenance.
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 R-Class Electrical System Service Manual
Coming SoonDetailed guide covering the electrical system, including wiring diagrams, component locations, and troubleshooting procedures for the 2005-2017 R-Class.
Technical Service Bulletin: R-Class Alternator Updates
Coming SoonTSB addressing common alternator issues and recommended updates for the 2005-2017 Mercedes R-Class to improve reliability and performance.
Mercedes R-Class Electrical Parts Catalog
Coming SoonComprehensive catalog listing all electrical components, including part numbers and compatibility details for the 2005-2017 R-Class.
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