Mercedes-Benz Mercedes M-Class 2005-2011 Emissions & Sensors Specifications
Explore detailed specifications for the emissions sensors in the 2005-2011 Mercedes M-Class. Learn about sensor types, functions, and compatibility for diagnostics, repairs, and maintenance.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors used in the 2005-2011 Mercedes M-Class. It is designed to assist technicians, engineers, and enthusiasts in understanding the functionality, maintenance, and troubleshooting of these sensors. Use the search and navigation instructions to quickly locate specific details or browse through the sections for comprehensive insights.
How to Use
Use the search bar to enter keywords related to emissions sensors, such as 'O2 sensor' or 'NOx sensor'. The results will highlight relevant sections and subsections for quick access.
Scroll through the sections to explore major topics. Click on a section title to expand it and view its subsections. Use the quick reference table for a summary of key specifications.
Key Specifications
O2 Sensor Voltage Range
0.1-0.9 V
NOx Sensor Operating Temperature
600-800 °C
PM Sensor Response Time
< 2 seconds
Sensor Lifespan
100,000-150,000 miles
Replacement Cost
$150-$400 per sensor
Available Specifications
Oxygen (O2) Sensors
Oxygen sensors are critical for monitoring the air-fuel ratio in the exhaust system. This section covers their types, locations, and diagnostic procedures for the 2005-2011 Mercedes M-Class.
Oxygen (O2) Sensors
Oxygen sensors are critical for monitoring the air-fuel ratio in the exhaust system. This section covers their types, locations, and diagnostic procedures for the 2005-2011 Mercedes M-Class.
Sensor Types and Locations
- Upstream O2 sensors located before the catalytic converter
- Downstream O2 sensors located after the catalytic converter
- Wideband sensors for precise air-fuel ratio measurement
- Heated sensors for faster response times
Diagnostic Procedures
- Check for fault codes using an OBD-II scanner
- Inspect wiring and connectors for damage
- Test sensor voltage output with a multimeter
- Replace sensors if they fail to respond or provide erratic readings
Nitrogen Oxide (NOx) Sensors
NOx sensors are essential for reducing harmful emissions in diesel and some gasoline engines. This section explains their operation, maintenance, and troubleshooting for the Mercedes M-Class.
Nitrogen Oxide (NOx) Sensors
NOx sensors are essential for reducing harmful emissions in diesel and some gasoline engines. This section explains their operation, maintenance, and troubleshooting for the Mercedes M-Class.
Sensor Functionality
- Measures NOx levels in the exhaust stream
- Sends data to the engine control unit (ECU)
- Supports selective catalytic reduction (SCR) systems
- Requires periodic calibration
Maintenance and Troubleshooting
- Inspect for soot buildup and clean if necessary
- Check for error codes related to NOx sensor failure
- Test sensor output with a diagnostic tool
- Replace sensors if calibration fails or readings are inconsistent
Particulate Matter (PM) Sensors
PM sensors monitor soot levels in diesel engines to ensure compliance with emissions standards. This section covers their operation, maintenance, and replacement for the M-Class.
Particulate Matter (PM) Sensors
PM sensors monitor soot levels in diesel engines to ensure compliance with emissions standards. This section covers their operation, maintenance, and replacement for the M-Class.
Sensor Operation
- Detects soot particles in the exhaust
- Provides feedback to the ECU for diesel particulate filter (DPF) regeneration
- Works in conjunction with the DPF system
- Requires minimal maintenance under normal conditions
Replacement and Diagnostics
- Check for DPF-related fault codes
- Inspect sensor for physical damage or contamination
- Replace sensor if it fails to provide accurate readings
- Reset the ECU after sensor replacement
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Component Specifications
Overview
- Type
- Oxygen (O2) and NOx sensors
- Configuration
- Dual-sensor system for exhaust monitoring
- Platform
- Integrated with ECU for real-time feedback
- Material
- High-temperature ceramic and stainless steel
- Location
- Pre- and post-catalytic converter positions
Dimensions
- Length
- 3.15 inches (80 mm)
- Diameter
- 0.79 inches (20 mm)
- Thread Size
- M18 x 1.5
- Wire Length
- 47.24 inches (1200 mm)
- Operating Temperature
- -40°F to 1562°F (-40°C to 850°C)
- Weight
- 0.22 lbs (100 g)
- Voltage Range
- 0.1V to 0.9V
Materials
- Sensor Body
- Stainless steel 304
- Sensing Element
- Zirconium dioxide ceramic
- Heater Element
- Platinum-coated wire
- Connector
- High-temperature thermoplastic
Features
- Performance
-
- Real-time exhaust gas analysis
- Wide operating temperature range
- Fast response time (<100 ms)
- Self-diagnostic capabilities
- integration
-
- CAN bus communication
- Compatible with Mercedes-Benz diagnostic tools
- Adaptive learning for fuel trim adjustments
- Error code generation for fault detection
- Durability
-
- Corrosion-resistant housing
- Sealed against moisture ingress
- Vibration-resistant design
- Long service life (up to 100,000 miles)
- Environmental
-
- Compliant with Euro 4 and Euro 5 standards
- Low power consumption
- Recyclable materials
- Reduced emissions output
Safety Features
- Overheat Protection
-
- Automatic shutdown at critical temperatures
- Thermal fuse integration
- Electrical Safety
-
- Short-circuit protection
- Reverse polarity protection
- Mechanical Safety
-
- Anti-vibration mounting
- Crush-resistant wiring
Comfort Features
- installation
-
- Standardized thread size
- Pre-calibrated for plug-and-play installation
- Color-coded connectors
- Maintenance
-
- Easy access for replacement
- No special tools required
- Clear fault code indication
Accessories
- installation Tools
-
- O2 sensor socket
- Anti-seize compound
- Wire harness repair kit
- Replacement Parts
-
- Sensor gaskets
- Heat shields
- Connector seals
- Diagnostic Tools
-
- Mercedes-Benz STAR Diagnostic System
- OBD-II scanner
- Multimeter
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Service Items
-
- Inspect sensor wiring for damage
- Check connector integrity
- Verify sensor response time
- Clean sensor threads
- Test heater circuit resistance
- Maintenance Notes
- Use only manufacturer-approved anti-seize compound during installation
Warranty
- Standard Warranty
- Miles: 50,000Years: 4Coverage: Defects in materials and workmanship
- Emissions Warranty
- Miles: 80,000Years: 8Coverage: Federal emissions compliance
- Extended Warranty
- Miles: 100,000Years: 7Coverage: Optional extended coverage
- Warranty Terms
- Void if tampered with or used with non-approved fuel additives
Production Details
- Manufacturer
- Bosch GmbH
- Manufacturing Process
-
- Precision ceramic sintering
- Automated assembly
- Laser welding
- 100% functional testing
- Quality Control
- Testing: Thermal cycling, Vibration resistance, Electrical performanceCertifications: ISO 9001, ISO 14001, TS 16949
- Sustainability Practices
-
- Closed-loop manufacturing
- Lead-free materials
- Energy-efficient production
- Production Metrics
- Annual Output: 2.5 million unitsDefect Rate: <0.01%Lead Time: 4 weeks
Service Information for emissions_sensors Service
Maintenance and service requirements specific to emissions sensors
- Inspect sensor wiring and connectors
- Check for fault codes
- Verify sensor response time
- Clean sensor threads
- Test heater circuit resistance
Use only manufacturer-approved diagnostic tools
- Perform full sensor diagnostic
- Check for exhaust leaks
- Verify catalytic converter efficiency
- Inspect mounting integrity
- Test signal voltage range
May require specialized equipment for testing
- Replace oxygen sensors
- Inspect and replace wiring if necessary
- Perform complete emissions system check
- Verify ECU communication
- Update software if available
Critical to maintain emissions compliance
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are the emissions sensors compatible with all 2005-2011 Mercedes M-Class models?
Are the emissions sensors compatible with all 2005-2011 Mercedes M-Class models?
The emissions sensors are designed to be compatible with all 2005-2011 Mercedes M-Class models, including the ML320, ML350, ML450, and ML550. These sensors are specifically calibrated to meet the emissions standards for these vehicles. However, it is recommended to verify the exact part number and compatibility with your vehicle's VIN to ensure proper fitment and functionality.
Q2 What maintenance is required for emissions sensors in the 2005-2011 Mercedes M-Class?
What maintenance is required for emissions sensors in the 2005-2011 Mercedes M-Class?
Emissions sensors in the 2005-2011 Mercedes M-Class require minimal maintenance. Regular inspections during routine service intervals are recommended to ensure they are functioning correctly. Cleaning the sensor ports and checking for any error codes related to emissions can help maintain optimal performance. Replacement is typically only necessary if a fault is detected or if the vehicle fails an emissions test.
Q3 How do I install or replace emissions sensors in a 2005-2011 Mercedes M-Class?
How do I install or replace emissions sensors in a 2005-2011 Mercedes M-Class?
To install or replace emissions sensors, first, locate the sensor near the exhaust system. Disconnect the electrical connector and use a suitable wrench to remove the old sensor. Apply anti-seize compound to the threads of the new sensor and install it by hand to avoid cross-threading. Tighten to the manufacturer's specified torque, reconnect the electrical connector, and clear any error codes using a diagnostic tool.
Q4 What should I do if my emissions sensor is malfunctioning?
What should I do if my emissions sensor is malfunctioning?
If your emissions sensor is malfunctioning, start by checking for error codes using an OBD-II scanner. Common issues include loose connections, damaged wiring, or a faulty sensor. Inspect the sensor and wiring for visible damage. If no issues are found, the sensor may need replacement. Always ensure the replacement sensor is compatible with your 2005-2011 Mercedes M-Class model.
Q5 How can I optimize the performance of my emissions sensors?
How can I optimize the performance of my emissions sensors?
To optimize emissions sensor performance, ensure your vehicle's engine is running efficiently. Regularly replace air filters, spark plugs, and fuel filters. Use high-quality fuel and keep the exhaust system clean. Periodically check for error codes and address any issues promptly. Properly functioning sensors will help maintain optimal fuel efficiency and reduce harmful emissions.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
2005-2011 Mercedes M-Class Service Manual
Coming SoonComprehensive service manual covering all aspects of maintenance, repair, and diagnostics for the 2005-2011 Mercedes M-Class, including emissions systems.
Technical Service Bulletin: Emissions Sensor Updates
Coming SoonLatest updates and technical service bulletins related to emissions sensors for the 2005-2011 Mercedes M-Class, including common issues and solutions.
Mercedes M-Class Parts and Accessories Catalog
Coming SoonDetailed catalog of OEM and aftermarket parts and accessories for the 2005-2011 Mercedes M-Class, including emissions sensors and related components.
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