Mercedes-Benz Mercedes E-Class 2002-2009 Emissions & Sensors Specifications
Explore detailed specifications for emissions sensors in the 2002-2009 Mercedes E-Class. Learn about sensor types, functions, and compatibility for diagnostics, repairs, and performance optimization.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors used in the 2002-2009 Mercedes E-Class. It is designed to assist technicians, engineers, and enthusiasts in understanding the functionality, maintenance, and troubleshooting of these sensors. The guide is organized into sections for easy navigation, with subsections detailing specific components and their roles in the vehicle's emissions system.
How to Use
Use the search functionality to quickly locate specific terms or sensor names. Enter keywords like 'O2 sensor' or 'catalytic converter' to find relevant sections.
Navigate through the document using the table of contents. Each major section is divided into subsections, allowing you to quickly find detailed information about specific emissions sensors.
Key Specifications
O2 Sensor Voltage Range
0.1 - 0.9 V
Catalytic Converter Efficiency
> 95%
EGR Valve Response Time
< 200 ms
Exhaust Gas Temperature
600 - 900 °C
Sensor Operating Temperature
-40 to 120 °C
Available Specifications
Oxygen Sensors (O2 Sensors)
Oxygen sensors are critical components in the emissions system, monitoring the oxygen levels in the exhaust gases. This section covers their types, locations, and functions in the 2002-2009 Mercedes E-Class.
Oxygen Sensors (O2 Sensors)
Oxygen sensors are critical components in the emissions system, monitoring the oxygen levels in the exhaust gases. This section covers their types, locations, and functions in the 2002-2009 Mercedes E-Class.
Types of O2 Sensors
- 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 O2 sensors for faster warm-up times
Functionality
- Monitor exhaust gas oxygen content
- Provide feedback to the engine control unit (ECU)
- Optimize air-fuel mixture for combustion efficiency
- Detect catalytic converter efficiency
Catalytic Converters
Catalytic converters reduce harmful emissions by converting pollutants into less harmful gases. This section explains their integration with emissions sensors and their role in the E-Class.
Catalytic Converters
Catalytic converters reduce harmful emissions by converting pollutants into less harmful gases. This section explains their integration with emissions sensors and their role in the E-Class.
Sensor Integration
- O2 sensors monitor converter efficiency
- Temperature sensors detect overheating
- Pressure sensors check for blockages
- Diagnostic sensors for fault detection
Maintenance and Troubleshooting
- Regular inspection for wear and tear
- Check for error codes related to converter efficiency
- Replace sensors if converter performance declines
- Ensure proper airflow and exhaust system integrity
Exhaust Gas Recirculation (EGR) System
The EGR system reduces nitrogen oxide emissions by recirculating a portion of exhaust gases back into the engine. This section details the sensors involved and their functions.
Exhaust Gas Recirculation (EGR) System
The EGR system reduces nitrogen oxide emissions by recirculating a portion of exhaust gases back into the engine. This section details the sensors involved and their functions.
EGR Valve Sensors
- Monitor valve position and operation
- Detect carbon buildup and blockages
- Provide feedback to the ECU for optimal performance
- Trigger warning lights for malfunctions
Temperature and Pressure Sensors
- Measure exhaust gas temperature
- Monitor pressure differentials in the EGR system
- Ensure safe and efficient recirculation
- Prevent engine knocking and overheating
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Component Specifications
Overview
- Type
- Oxygen Sensor (O2 Sensor)
- Configuration
- Upstream and Downstream
- Platform
- Mercedes-Benz E-Class (W211)
- Material
- Zirconia Ceramic
- Location
- Exhaust System
Dimensions
- Length
- 3.15 inches (80 mm)
- Diameter
- 0.79 inches (20 mm)
- Thread Size
- M18 x 1.5
- Wire Length
- 23.62 inches (600 mm)
- Operating Temperature
- 392°F to 1472°F (200°C to 800°C)
- Weight
- 0.22 lbs (100 g)
- Voltage Range
- 0.1V to 0.9V
Materials
- Sensor Body
- Stainless Steel
- Sensing Element
- Zirconia Ceramic
- Wiring
- High-Temperature Resistant Copper
- Connector
- Thermoplastic
Features
- Performance
-
- Real-time emissions monitoring
- Wide operating temperature range
- Fast response time
- Durability
-
- Corrosion-resistant materials
- High-temperature tolerance
- Long lifespan
- Compatibility
-
- Direct fit for E-Class models
- OEM specifications
- Universal wiring harness
- Diagnostics
-
- On-board diagnostics (OBD-II) compatible
- Error code detection
- Self-diagnostic capabilities
- installation
-
- Threaded design for easy mounting
- Pre-wired connector
- Tool-free installation
Safety Features
- Electrical Safety
-
- Short-circuit protection
- Overvoltage protection
- Thermal Protection
-
- High-temperature insulation
- Heat-resistant wiring
- Mechanical Safety
-
- Vibration resistance
- Impact-resistant housing
Comfort Features
- Noise Reduction
-
- Quiet operation
- Vibration dampening
- Maintenance Ease
-
- Easy access for replacement
- Minimal disassembly required
- Reliability
-
- Consistent performance
- Low failure rate
- Driver Assistance
-
- Real-time feedback to ECU
- Enhanced fuel efficiency
Accessories
- installation Tools
-
- O2 sensor socket
- Thread sealant
- Wire connectors
- Replacement Parts
-
- Sensor gasket
- Harness adapter
- Heat shield
- Diagnostic Tools
-
- OBD-II scanner
- Multimeter
- Test leads
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Service Items
-
- Inspect sensor wiring
- Check for exhaust leaks
- Clean sensor tip
- Test sensor voltage
- Replace if faulty
- Maintenance Notes
- Ensure proper torque when reinstalling sensor to avoid damage.
Warranty
- Standard Warranty
- Miles: 50,000Years: 2Coverage: Defects in materials and workmanship
- Extended Warranty
- Miles: 100,000Years: 5Coverage: Additional coverage for sensor failure
- Parts Warranty
- Miles: UnlimitedYears: 1Coverage: Replacement parts only
- Labor Warranty
- Miles: UnlimitedYears: 1Coverage: Labor costs for replacement
Production Details
- Manufacturer
- Bosch
- Manufacturing Process
-
- Precision ceramic molding
- Automated assembly
- Quality testing
- Quality Control
- Testing Standards: ISO 9001inspection Process: 100% functional testing
- Sustainability Practices
-
- Recyclable materials
- Energy-efficient production
- Low-waste manufacturing
- Production Metrics
- Annual Output: 1,000,000 unitsDefect Rate: 0.01%
Service Information for emissions_sensors Service
Maintenance and service requirements specific to this component
- Inspect sensor wiring for damage
- Check for exhaust leaks near sensor
- Test sensor voltage output
- Clean sensor tip if necessary
Ensure vehicle is cold before inspection to avoid burns.
- Replace sensor if voltage readings are out of range
- Inspect and replace gasket if worn
- Check harness connector for corrosion
- Perform OBD-II diagnostic scan
Use OEM parts for replacement to ensure compatibility.
- Replace sensor as preventive maintenance
- Inspect and replace wiring harness if damaged
- Perform full exhaust system check
- Test ECU feedback for accuracy
Major service may require professional tools and expertise.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are the emissions sensors compatible with all 2002-2009 Mercedes E-Class models?
Are the emissions sensors compatible with all 2002-2009 Mercedes E-Class models?
The emissions sensors for the 2002-2009 Mercedes E-Class are designed to be compatible with all variants within this model range, including diesel and gasoline engines. However, it is essential to verify the specific part number and engine type before purchase, as there may be slight variations depending on the engine configuration and regional emissions standards. Always consult the vehicle's manual or a certified technician for compatibility confirmation.
Q2 What are the maintenance requirements for emissions sensors in the 2002-2009 Mercedes E-Class?
What are the maintenance requirements for emissions sensors in the 2002-2009 Mercedes E-Class?
Emissions sensors in the 2002-2009 Mercedes E-Class typically require minimal maintenance but should be inspected during regular service intervals. Check for any signs of physical damage, contamination, or corrosion. Ensure the sensor connections are clean and secure. Replacement is recommended if the sensor fails or if the vehicle's onboard diagnostics indicate a fault. Regular software updates for the engine control unit (ECU) can also help maintain optimal sensor performance.
Q3 How do I install or replace emissions sensors in a 2002-2009 Mercedes E-Class?
How do I install or replace emissions sensors in a 2002-2009 Mercedes E-Class?
To install or replace emissions sensors, first, locate the sensor on the exhaust system. Disconnect the electrical connector and use a suitable wrench to remove the sensor. Clean the mounting area to ensure a proper seal for the new sensor. Install the new sensor by hand-tightening it, then use a torque wrench to secure it to the manufacturer's specifications. Reconnect the electrical connector and clear any fault codes using an OBD-II scanner. Test the vehicle to ensure proper operation.
Q4 What should I do if my Mercedes E-Class emissions sensor malfunctions?
What should I do if my Mercedes E-Class emissions sensor malfunctions?
If your emissions sensor malfunctions, first use an OBD-II scanner to read the fault code. Common issues include sensor contamination, wiring damage, or connection problems. Inspect the sensor and its wiring for visible damage or corrosion. Clean or replace the sensor if necessary. If the issue persists, check for exhaust leaks or other engine-related problems that may affect the sensor's performance. Consult a certified technician for advanced diagnostics.
Q5 How can I optimize the performance of emissions sensors in my 2002-2009 Mercedes E-Class?
How can I optimize the performance of emissions sensors in my 2002-2009 Mercedes E-Class?
To optimize emissions sensor performance, ensure the vehicle's engine is well-maintained with regular oil changes, air filter replacements, and fuel system cleanings. Use high-quality fuel to reduce contamination. Keep the sensor connections clean and free of corrosion. Regularly update the ECU software to ensure compatibility with the sensor. Avoid driving in extreme conditions that may expose the sensor to excessive heat or contaminants.
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 E-Class Emissions Sensor Service Manual
Coming SoonThis manual provides detailed instructions for diagnosing, maintaining, and replacing emissions sensors in the 2002-2009 Mercedes E-Class.
Technical Service Bulletin: Emissions Sensor Updates
Coming SoonThis bulletin covers the latest updates and recommendations for emissions sensors in the 2002-2009 Mercedes E-Class, including compatibility and performance enhancements.
Mercedes E-Class Parts Catalog
Coming SoonThis catalog lists all genuine and compatible parts, including emissions sensors, for the 2002-2009 Mercedes E-Class, along with part numbers and descriptions.
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