Mercedes-Benz Mercedes CLK 2002-2009 Emissions & Sensors Specifications
Explore detailed specifications for emissions sensors in the 2002-2009 Mercedes CLK. Learn about sensor types, functions, compatibility, and repair tips for optimal engine performance and emissions compliance.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors used in the 2002-2009 Mercedes CLK. It is designed to assist technicians, enthusiasts, and owners in understanding the functionality, maintenance, and troubleshooting of these sensors. The document is organized into sections for easy navigation and includes a quick reference guide for key specifications.
How to Use
Use the search functionality to quickly locate specific terms or sensor models within the document. Enter keywords such as 'O2 sensor' or 'catalytic converter' to find relevant sections.
Navigate through the document using the table of contents or by scrolling through sections. Each major section is clearly labeled, and subsections provide detailed information on specific topics.
Key Specifications
O2 Sensor Voltage Range
0.1 - 0.9 V
Catalytic Converter Temp Range
400 - 800 °C
EGR Valve Position Range
0 - 100%
Sensor Replacement Interval
60,000 - 100,000 miles
Operating Temperature
-40 to 125 °C
Available Specifications
Oxygen Sensors
This section covers the oxygen (O2) sensors used in the 2002-2009 Mercedes CLK. These sensors are critical for monitoring the air-fuel ratio and ensuring optimal engine performance and emissions control.
Oxygen Sensors
This section covers the oxygen (O2) sensors used in the 2002-2009 Mercedes CLK. These sensors are critical for monitoring the air-fuel ratio and ensuring optimal engine performance and emissions control.
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 O2 sensors for faster warm-up times
Maintenance and Troubleshooting
- Regular inspection every 60,000 miles
- Check for contamination from oil or coolant leaks
- Diagnose using OBD-II codes for sensor malfunctions
- Replace sensors showing slow response times
Catalytic Converter Sensors
This section provides information on the sensors associated with the catalytic converter, which play a vital role in reducing harmful emissions.
Catalytic Converter Sensors
This section provides information on the sensors associated with the catalytic converter, which play a vital role in reducing harmful emissions.
Temperature Sensors
- Monitor catalytic converter temperature to prevent overheating
- Located on the inlet and outlet of the converter
- Trigger warning lights if temperatures exceed safe limits
- Require calibration during replacement
Efficiency Monitoring
- Downstream O2 sensors measure converter efficiency
- Compare pre- and post-converter exhaust gas composition
- Trigger fault codes if efficiency drops below thresholds
- Regularly inspect for physical damage or clogging
Exhaust Gas Recirculation (EGR) Sensors
This section details the sensors involved in the EGR system, which reduces nitrogen oxide emissions by recirculating a portion of exhaust gases back into the engine.
Exhaust Gas Recirculation (EGR) Sensors
This section details the sensors involved in the EGR system, which reduces nitrogen oxide emissions by recirculating a portion of exhaust gases back into the engine.
EGR Valve Position Sensors
- Monitor the position of the EGR valve
- Ensure proper recirculation of exhaust gases
- Trigger fault codes if valve position is incorrect
- Require cleaning or replacement if clogged
Flow Rate Sensors
- Measure the volume of recirculated exhaust gases
- Ensure optimal EGR system performance
- Diagnose using OBD-II codes for flow discrepancies
- Inspect for carbon buildup or blockages
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Component Specifications
Overview
- Type
- Oxygen (O2) and NOx sensors
- Configuration
- Dual-sensor system (upstream and downstream)
- Platform
- Integrated with ECU for real-time emissions monitoring
- Material
- High-temperature ceramic sensing element
- Location
- Mounted in exhaust system pre- and post-catalytic converter
Dimensions
- Sensor Length
- 3.15 in (80 mm)
- Sensor Diameter
- 0.79 in (20 mm)
- Thread Size
- M18 x 1.5
- Cable Length
- 23.62 in (600 mm)
- Operating Temperature
- -40°F to 1562°F (-40°C to 850°C)
- Voltage Range
- 0.1V to 0.9V
- Response Time
- 0.2 seconds
Materials
- Sensing Element
- Zirconium dioxide ceramic
- Protective Tube
- Stainless steel 304
- Cable insulation
- High-temperature PTFE
- Connector
- PBT plastic with gold-plated terminals
Features
- Monitoring
-
- Real-time oxygen concentration measurement
- NOx level detection
- Catalytic converter efficiency monitoring
- Air-fuel ratio calculation
- Diagnostics
-
- Self-diagnostic capability
- Fault code generation
- Heater circuit monitoring
- Signal plausibility check
- Durability
-
- Resistant to exhaust gas corrosion
- Thermal shock protection
- Vibration-resistant design
- Water ingress protection
- integration
-
- CAN bus communication
- ECU signal processing
- On-board diagnostics (OBD-II) compatibility
- Adaptive learning capability
- Performance
-
- Fast response time
- High accuracy (±1% of measured value)
- Wide operating temperature range
- Low power consumption
Safety Features
- Electrical Safety
-
- Short-circuit protection
- Overvoltage protection
- Reverse polarity protection
- Thermal Protection
-
- Integrated temperature monitoring
- Automatic heater control
- Overheat shutdown
- Mechanical Safety
-
- Vibration-resistant mounting
- Crush-resistant cable
- Sealed connector system
Comfort Features
- installation
-
- Standardized thread size
- Pre-assembled connector
- Tool-free cable routing
- Maintenance
-
- Self-cleaning function
- Easy access for replacement
- No calibration required
- Operation
-
- Silent operation
- No moving parts
- Maintenance-free design
Accessories
- installation Tools
-
- O2 sensor socket
- Anti-seize compound
- Thread chaser
- Replacement Parts
-
- Sensor gasket
- Protective cap
- Wiring harness extension
- Diagnostic Tools
-
- OBD-II scanner
- Multimeter
- Oscilloscope
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Service Items
-
- Sensor signal verification
- Heater circuit check
- Connector inspection
- Mounting integrity check
- Exhaust system leak test
- Maintenance Notes
- Use only manufacturer-approved replacement parts to maintain emissions compliance
Warranty
- Emissions Warranty
- Miles: 80000Years: 8Coverage: Federal emissions components
- Parts Warranty
- Miles: 50000Years: 4Coverage: Sensor replacement
- Labor Warranty
- Miles: 50000Years: 4Coverage: Installation costs
- Warranty Terms
- Void if non-approved parts are used or if tampering is detected
Production Details
- Manufacturer
- Bosch Automotive
- Manufacturing Process
-
- Precision ceramic molding
- Laser welding
- Automated calibration
- Environmental testing
- Quality Control
- Testing: Thermal cycling, Vibration resistance, Signal accuracy verificationCertifications: ISO 9001, ISO/TS 16949, RoHS compliant
- Sustainability Practices
-
- Lead-free manufacturing
- Recyclable materials
- Energy-efficient production
- Production Metrics
- Units Per Hour: 1200Defect Rate: 0.001%Energy Consumption: 2.5 kWh per unit
Service Information for emissions_sensors Service
Maintenance and service requirements specific to emissions sensors
- Visual inspection of sensor and wiring
- Check for fault codes
- Verify sensor response time
- Inspect mounting integrity
- Check exhaust system for leaks
Use manufacturer-approved diagnostic tools
- Perform full sensor diagnostic
- Check heater circuit resistance
- Verify signal voltage range
- Inspect connector for corrosion
- Test catalytic converter efficiency
Replace sensor if response time exceeds specifications
- Replace oxygen sensors
- Perform exhaust system pressure test
- Check ECU sensor calibration
- Verify NOx sensor functionality
- Inspect entire emissions system
Critical to maintain emissions compliance and engine performance
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 Are the emissions sensors compatible with all 2002-2009 Mercedes CLK models?
Are the emissions sensors compatible with all 2002-2009 Mercedes CLK models?
The emissions sensors for the 2002-2009 Mercedes CLK are designed to be compatible with all engine variants within this model range, including the CLK 200, CLK 240, CLK 320, and CLK 500. However, it is essential to verify the specific part number and engine type before installation, as slight variations may exist between gasoline and diesel engines. Always consult the vehicle's VIN or a Mercedes-Benz dealer for precise compatibility.
Q2 What maintenance is required for emissions sensors in the Mercedes CLK?
What maintenance is required for emissions sensors in the Mercedes CLK?
Emissions sensors in the 2002-2009 Mercedes CLK require minimal maintenance but should be inspected during routine service intervals. Check for contamination, corrosion, or damage every 30,000 miles. Ensure the sensor wiring is intact and free from wear. If the Check Engine Light (CEL) illuminates, diagnostic testing should be performed immediately to assess sensor functionality and replace it if necessary.
Q3 How do I replace the emissions sensor on a 2002-2009 Mercedes CLK?
How do I replace the emissions sensor on a 2002-2009 Mercedes CLK?
To replace the emissions sensor, first, locate the sensor near the exhaust manifold or catalytic converter. Disconnect the battery, then unplug the sensor's electrical connector. Use an appropriate wrench to remove the sensor. Install the new sensor by threading it in by hand to avoid cross-threading, then tighten it to the manufacturer's torque specification. Reconnect the electrical connector and battery. Clear any error codes using an OBD-II scanner.
Q4 What should I do if the emissions sensor fails in my Mercedes CLK?
What should I do if the emissions sensor fails in my Mercedes CLK?
If the emissions sensor fails, first check for error codes using an OBD-II scanner. Common issues include faulty wiring, contamination, or sensor degradation. Inspect the sensor and wiring for damage or corrosion. If the sensor is faulty, replace it with a compatible part. If the issue persists, consult a professional technician to diagnose potential exhaust system or engine management problems.
Q5 How can I optimize the performance of my Mercedes CLK's emissions sensors?
How can I optimize the performance of my Mercedes CLK's emissions sensors?
To optimize emissions sensor performance, ensure the engine is running efficiently by maintaining proper air-fuel ratios and using high-quality fuel. Regularly inspect and clean the sensor to prevent contamination. Avoid using fuel additives that may damage the sensor. Additionally, ensure the exhaust system is leak-free, as leaks can cause inaccurate sensor readings and reduced performance.
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-Benz CLK Service Manual (2002-2009)
Coming SoonComprehensive service manual covering maintenance, repair, and diagnostics for the 2002-2009 Mercedes CLK, including emissions system details.
Technical Service Bulletin: Emissions Sensor Updates
Coming SoonOfficial bulletin addressing common issues, updates, and replacement procedures for emissions sensors in the 2002-2009 CLK models.
Mercedes-Benz CLK Parts Catalog
Coming SoonDetailed catalog listing OEM and aftermarket parts for the 2002-2009 CLK, including emissions sensors and related components.
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