Mercedes-Benz Mercedes G-Class 1979-2018 HVAC Specifications
Discover detailed HVAC specifications for the 1979-2018 Mercedes G-Class, including components like compressors, condensers, and blower motors. This guide is essential for troubleshooting, maintenance, and repairs.
Overview Specifications
This document provides a comprehensive overview of the HVAC (Heating, Ventilation, and Air Conditioning) specifications for Mercedes G-Class models produced between 1979 and 2018. It is designed to assist users in understanding the key features, components, and functionalities of the HVAC systems in these vehicles. Use this guide to locate detailed technical information, navigate through sections, and quickly reference essential specifications.
How to Use
To search for specific terms or topics, use the 'Find' function in your browser or PDF reader. Enter keywords related to the HVAC system, such as 'heating', 'air conditioning', or 'ventilation', to quickly locate relevant information.
Navigate through the document by scrolling or using the table of contents. Each section is clearly labeled and organized into subsections for easy access to specific details about the HVAC system.
Key Specifications
Heating Capacity
5.0 kW
Cooling Capacity
4.5 kW
Refrigerant Type
R134a
Blower Motor Power
150 W
Airflow Rate
400 m³/h
Available Specifications
Heating System
The heating system in the Mercedes G-Class ensures optimal cabin warmth during colder months. This section covers the components, functionality, and maintenance tips for the heating system, including the heater core, blower motor, and controls.
Heating System
The heating system in the Mercedes G-Class ensures optimal cabin warmth during colder months. This section covers the components, functionality, and maintenance tips for the heating system, including the heater core, blower motor, and controls.
Heater Core and Blower Motor
- Heater core constructed from durable aluminum for longevity
- Blower motor provides adjustable airflow speeds
- Designed for efficient heat distribution
- Easy access for maintenance and replacement
- Compatible with various G-Class models
- Supports both manual and automatic climate control systems
Heating Controls
- Dual-zone climate control available in later models
- Rotary knobs for manual temperature adjustment
- Digital displays in newer models for precise control
- Integrated with the vehicle's central control system
- Defrost function for windshield and windows
- Energy-efficient operation to reduce fuel consumption
Air Conditioning System
The air conditioning system in the Mercedes G-Class provides reliable cooling and dehumidification for the cabin. This section details the components, functionality, and maintenance of the AC system, including the compressor, condenser, and refrigerant.
Air Conditioning System
The air conditioning system in the Mercedes G-Class provides reliable cooling and dehumidification for the cabin. This section details the components, functionality, and maintenance of the AC system, including the compressor, condenser, and refrigerant.
Compressor and Condenser
- Scroll-type compressor for efficient cooling
- Condenser designed for optimal heat dissipation
- Compatible with R134a refrigerant
- Sealed system to prevent refrigerant leaks
- Durable construction for off-road conditions
- Easy to service and maintain
AC Controls and Performance
- Automatic climate control in later models
- Adjustable fan speeds for personalized comfort
- Integrated air filtration system
- Quick cooling performance in hot weather
- Energy-saving mode to reduce engine load
- Regular maintenance recommended for peak performance
Ventilation System
The ventilation system in the Mercedes G-Class ensures proper airflow and air quality within the cabin. This section covers the design, components, and functionality of the ventilation system, including air ducts, vents, and filters.
Ventilation System
The ventilation system in the Mercedes G-Class ensures proper airflow and air quality within the cabin. This section covers the design, components, and functionality of the ventilation system, including air ducts, vents, and filters.
Air Ducts and Vents
- Strategically placed vents for uniform airflow
- Adjustable vent direction for personalized comfort
- Durable plastic construction for longevity
- Integrated with the HVAC control system
- Easy to clean and maintain
- Supports both front and rear passenger zones
Air Filtration System
- High-efficiency particulate air (HEPA) filters in later models
- Removes dust, pollen, and pollutants from the air
- Replaceable filters for easy maintenance
- Improves cabin air quality during off-road driving
- Integrated with the ventilation and AC systems
- Regular filter replacement recommended
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Component Specifications
Overview
- Type
- Automatic Climate Control
- Configuration
- Dual-Zone
- Platform
- Integrated with Vehicle Electronics
- Material
- High-Durability Plastics and Metals
- Location
- Dashboard and Rear Compartment
Dimensions
- Evaporator Length
- 12.5 inches / 31.75 cm
- Evaporator Width
- 8.2 inches / 20.83 cm
- Evaporator Height
- 5.9 inches / 14.99 cm
- Condenser Length
- 18.1 inches / 45.97 cm
- Condenser Width
- 10.6 inches / 26.92 cm
- Condenser Height
- 1.2 inches / 3.05 cm
- Blower Motor Diameter
- 6.3 inches / 16 cm
Materials
- Evaporator Core
- Aluminum
- Condenser Core
- Aluminum
- Blower Motor
- High-Strength Plastic and Copper Windings
- Ducting
- Reinforced Thermoplastic
- Control Panel
- ABS Plastic with Metal Backing
Features
- Climate Control
-
- Automatic Temperature Regulation
- Dual-Zone Temperature Settings
- Rear Compartment Airflow Control
- Defrost and Demist Functions
- Air Quality
-
- Pollen Filter
- Activated Carbon Filter
- Automatic Air Recirculation
- User interface
-
- Digital Temperature Display
- Rotary Dials for Fan Speed
- Push-Button Controls
- LCD Screen for Settings
- Performance
-
- High-Efficiency Compressor
- Variable Speed Blower Motor
- Quick Cooling and Heating
- integration
-
- CAN-Bus System Integration
- Diagnostic Port Access
- Compatibility with Vehicle Sensors
Safety Features
- Overheat Protection
-
- Automatic Shutdown at High Temperatures
- Thermal Fuse Protection
- Electrical Safety
-
- Short-Circuit Protection
- Overload Protection
- Airflow Safety
-
- Automatic Shutdown if Blocked
- Filter Replacement Indicator
Comfort Features
- Temperature Control
-
- Precise Temperature Adjustment
- Memory Settings for Driver Preferences
- Airflow Distribution
-
- Adjustable Vents
- Multi-Directional Airflow
- Rear Passenger Controls
- Noise Reduction
-
- Quiet Blower Motor
- Insulated Ducting
- Convenience
-
- Auto Start/Stop with Ignition
- Remote Pre-Conditioning
Accessories
- Filters
-
- Pollen Filter
- Activated Carbon Filter
- HEPA Filter (Optional)
- Controls
-
- Remote Control Unit
- Rear Seat Control Panel
- Mobile App Integration
- Upgrades
-
- Enhanced Compressor
- High-Performance Blower Motor
- UV-C Air Purifier
Maintenance
- Service interval
- Every 15,000 miles or 12 months
- Service Items
-
- Inspect and Replace Air Filters
- Check Refrigerant Levels
- Inspect Blower Motor and Fan
- Clean Evaporator and Condenser Coils
- Test Electrical Connections
- Maintenance Notes
- Use only OEM-approved refrigerants and lubricants.
Warranty
- Basic Warranty
- Miles: 50,000Years: 4Coverage: Parts and Labor
- Extended Warranty
- Miles: 100,000Years: 7Coverage: Major Components Only
- Compressor Warranty
- Miles: 75,000Years: 5Coverage: Compressor and Seals
- Labor Warranty
- Miles: 50,000Years: 4Coverage: Labor Costs Included
Production Details
- Manufacturer
- Mercedes-Benz AG
- Manufacturing Process
-
- Precision CNC Machining
- Robotic Assembly
- Quality Testing at Each Stage
- Quality Control
- Testing: Pressure Testing, Leak Detection, Performance CalibrationCertifications: ISO 9001, ISO 14001
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Production
- Reduced Emissions
- Production Metrics
- Units Per Year: 50,000Defect Rate: 0.01%
Service Information for HVAC Service
Maintenance and service requirements specific to the HVAC system
- Inspect and Replace Air Filters
- Check Refrigerant Levels
- Inspect Blower Motor and Fan
- Clean Evaporator and Condenser Coils
- Test Electrical Connections
Ensure all connections are secure and free of corrosion.
- Replace Cabin Air Filter
- Inspect Compressor and Belts
- Check for Refrigerant Leaks
- Test Climate Control Sensors
- Lubricate Moving Parts
Use only OEM-approved lubricants and refrigerants.
- Flush and Replace Refrigerant
- Inspect and Replace Condenser if Necessary
- Test Blower Motor Performance
- Check Ducting for Blockages
- Calibrate Temperature Sensors
Major service requires specialized tools and diagnostic equipment.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Is the HVAC system compatible with all Mercedes G-Class models from 1979 to 2018?
Is the HVAC system compatible with all Mercedes G-Class models from 1979 to 2018?
The HVAC system in Mercedes G-Class vehicles from 1979 to 2018 varies by model year and trim. While many components are standardized, specific parts like compressors, condensers, and control modules may differ. Always verify compatibility using your vehicle's VIN or consult a Mercedes-Benz dealer for precise information. Upgrades or replacements may require adaptations for older models.
Q2 What are the maintenance requirements for the HVAC system in a Mercedes G-Class?
What are the maintenance requirements for the HVAC system in a Mercedes G-Class?
Regular HVAC maintenance for a Mercedes G-Class includes inspecting and replacing the cabin air filter every 15,000-20,000 miles, checking refrigerant levels annually, and ensuring the compressor and blower motor function properly. Clean the condenser and evaporator coils to maintain efficiency. Schedule professional inspections every 30,000 miles to address potential leaks, electrical issues, or worn components.
Q3 How do I replace the HVAC blower motor in a Mercedes G-Class?
How do I replace the HVAC blower motor in a Mercedes G-Class?
To replace the HVAC blower motor, disconnect the battery for safety. Remove the glove box or lower dashboard panel to access the motor. Disconnect the electrical connector and mounting screws, then carefully remove the old motor. Install the new motor, secure it with screws, and reconnect the electrical connector. Reassemble the dashboard and test the system to ensure proper operation.
Q4 Why is my Mercedes G-Class HVAC system blowing warm air?
Why is my Mercedes G-Class HVAC system blowing warm air?
Warm air from the HVAC system can result from low refrigerant levels, a faulty compressor, or a clogged condenser. Check for refrigerant leaks and recharge if necessary. Inspect the compressor for proper engagement and functionality. Clean the condenser of debris. If issues persist, consult a professional to diagnose electrical or sensor-related problems.
Q5 How can I optimize the performance of my Mercedes G-Class HVAC system?
How can I optimize the performance of my Mercedes G-Class HVAC system?
To optimize HVAC performance, ensure the system is regularly serviced, including refrigerant checks and filter replacements. Use the recirculation mode in hot weather to cool the cabin faster. Park in shaded areas to reduce heat buildup. Inspect and clean the condenser and evaporator coils annually. Address any unusual noises or reduced airflow promptly to prevent further damage.
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 G-Class HVAC Service Manual
Coming SoonDetailed guide covering HVAC system maintenance, troubleshooting, and repair for Mercedes G-Class models from 1979 to 2018.
Technical Service Bulletin: HVAC System Updates
Coming SoonOverview of updates and fixes for common HVAC system issues in Mercedes G-Class vehicles.
Mercedes G-Class HVAC Parts Catalog
Coming SoonComprehensive catalog of OEM and aftermarket HVAC components for 1979-2018 Mercedes G-Class models.
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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.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
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