Mercedes-Benz Mercedes E-Class 2017-present Emissions & Sensors Specifications
Explore detailed specifications for the 2017-Present Mercedes E-Class emissions sensors. Learn about sensor types, functions, compatibility, and repair tips to maintain optimal emissions performance and compliance.
Overview Specifications
This document provides detailed specifications and technical information about the emissions sensors used in the 2017-Present Mercedes E-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 sections for comprehensive insights.
How to Use
Use the search bar to enter keywords related to emissions sensors, such as 'NOx sensor' or 'O2 sensor'. The results will highlight relevant sections and subsections for quick access.
Browse through the major sections listed in the table of contents. Each section contains subsections with detailed technical points. Use the quick reference table for key specifications at a glance.
Key Specifications
NOx Sensor Operating Temperature
Up to 900°C
O2 Sensor Response Time
< 100 ms
Sensor Voltage Range
0.1 - 1.0 V
Replacement Interval
100,000 - 150,000 km
Heater Resistance
5 - 15 Ω
Available Specifications
Sensor Types and Functions
This section covers the different types of emissions sensors used in the Mercedes E-Class, their roles in monitoring and controlling emissions, and how they integrate with the vehicle's engine management system.
Sensor Types and Functions
This section covers the different types of emissions sensors used in the Mercedes E-Class, their roles in monitoring and controlling emissions, and how they integrate with the vehicle's engine management system.
NOx Sensors
- Monitors nitrogen oxide levels in the exhaust system
- Supports selective catalytic reduction (SCR) systems
- Operates at high temperatures for accurate readings
- Communicates with the engine control unit (ECU)
- Requires periodic calibration for optimal performance
- Commonly located near the SCR catalyst
O2 Sensors
- Measures oxygen levels in the exhaust gases
- Helps maintain the air-fuel ratio for efficient combustion
- Available in upstream and downstream configurations
- Uses zirconia or titania-based sensing elements
- Signals are used for closed-loop fuel control
- Prone to contamination from oil or coolant leaks
Installation and Maintenance
This section provides guidelines for installing, maintaining, and troubleshooting emissions sensors in the Mercedes E-Class. It includes best practices for ensuring sensor longevity and performance.
Installation and Maintenance
This section provides guidelines for installing, maintaining, and troubleshooting emissions sensors in the Mercedes E-Class. It includes best practices for ensuring sensor longevity and performance.
Installation Guidelines
- Ensure proper torque specifications during installation
- Use anti-seize compound on sensor threads
- Verify electrical connections are secure and corrosion-free
- Follow manufacturer-recommended positioning
- Perform a system reset after installation
- Test sensor functionality using diagnostic tools
Maintenance Tips
- Regularly inspect sensors for physical damage
- Clean sensor surfaces to prevent contamination
- Replace sensors at recommended intervals
- Monitor diagnostic trouble codes (DTCs) for early warnings
- Use OEM or high-quality aftermarket replacements
- Avoid exposure to harsh chemicals during cleaning
Diagnostics and Troubleshooting
This section focuses on diagnosing and resolving common issues related to emissions sensors. It includes steps for identifying faults, interpreting error codes, and performing repairs.
Diagnostics and Troubleshooting
This section focuses on diagnosing and resolving common issues related to emissions sensors. It includes steps for identifying faults, interpreting error codes, and performing repairs.
Common Faults
- Sensor signal out of range
- Slow response time due to contamination
- Electrical faults such as open or short circuits
- Heater circuit malfunctions
- Incorrect voltage readings
- Physical damage from road debris
Troubleshooting Steps
- Use an OBD-II scanner to retrieve error codes
- Check wiring and connectors for damage
- Test sensor output with a multimeter
- Inspect for exhaust leaks affecting readings
- Compare readings with manufacturer specifications
- Replace faulty sensors if necessary
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Component Specifications
Overview
- Type
- Oxygen (O2) and NOx sensors
- Configuration
- Dual-sensor system for exhaust monitoring
- Platform
- Integrated with Mercedes-Benz ECU
- Material
- High-temperature ceramic and stainless steel
- Location
- Mounted in exhaust system pre- and post-catalytic converter
Dimensions
- Length
- 3.15 in (80 mm)
- Diameter
- 0.98 in (25 mm)
- Thread Size
- M18 x 1.5
- Operating Temperature
- -40°F to 1562°F (-40°C to 850°C)
- Weight
- 0.22 lbs (100 g)
- Cable Length
- 23.6 in (600 mm)
- Sensor Tip Length
- 1.18 in (30 mm)
Materials
- Sensor Body
- Stainless steel 304
- Sensor Tip
- Zirconium dioxide ceramic
- Heating Element
- Platinum wire
- Seals
- High-temperature silicone
- Connector
- PBT plastic with gold-plated pins
Features
- Monitoring
-
- Real-time O2 concentration measurement
- NOx level detection
- Exhaust temperature monitoring
- Catalyst efficiency analysis
- Performance
-
- Fast response time (<100 ms)
- Self-diagnostic capabilities
- Wide operating temperature range
- Low power consumption
- integration
-
- CAN bus communication
- Plug-and-play installation
- Compatible with Mercedes-Benz diagnostic tools
- Adaptive learning for fuel trim adjustment
- Durability
-
- Resistant to vibration and shock
- Corrosion-resistant housing
- Sealed against moisture ingress
- Long service life (up to 100,000 miles)
- Safety
-
- Over-temperature protection
- Short-circuit detection
- Fail-safe mode activation
- Diagnostic trouble code generation
Safety Features
- Electrical Safety
-
- Insulated wiring
- Polarity protection
- EMI shielding
- Thermal Protection
-
- Automatic heater control
- Overheat shutdown
- Thermal fuse
- Mechanical Safety
-
- Vibration-resistant mounting
- Crush-proof connector
- Sealed sensor tip
Comfort Features
- installation
-
- Tool-free connector
- Pre-calibrated sensor
- Universal mounting bracket
- Maintenance
-
- Easy access for replacement
- Self-cleaning function
- Diagnostic port compatibility
- Performance
-
- Smooth engine operation
- Optimized fuel efficiency
- Reduced emissions output
Accessories
- Mounting
-
- Sensor gasket
- Anti-seize compound
- Mounting tool kit
- Electrical
-
- Extension harness
- Waterproof connector
- Fuse protector
- Diagnostic
-
- OBD-II scanner
- Sensor test kit
- Voltage meter
Maintenance
- Service interval
- Every 60,000 miles or 5 years
- Service Items
-
- Sensor inspection
- Connector cleaning
- Wiring check
- Diagnostic scan
- Performance test
- Maintenance Notes
- Use only Mercedes-Benz approved tools and replacement parts
Warranty
- Basic
- Miles: 50,000Years: 4Coverage: Parts and labor
- Emissions
- Miles: 80,000Years: 8Coverage: Sensor replacement
- Extended
- Miles: 100,000Years: 10Coverage: Limited sensor components
- Terms
- Warranty void if non-approved parts or improper installation
Production Details
- Manufacturer
- Bosch Automotive
- Manufacturing Process
-
- Precision ceramic molding
- Automated assembly
- Laser welding
- Quality testing
- Quality Control
- Testing: Thermal cycling, Vibration resistance, Electrical performanceCertifications: ISO 9001, ISO/TS 16949, RoHS compliant
- Sustainability Practices
-
- Recyclable materials
- Energy-efficient production
- Low-emission manufacturing
- Production Metrics
- Annual Output: 2 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
- Check connector integrity
- Perform diagnostic scan
- Verify sensor response time
- Clean sensor tip if accessible
Early detection of sensor degradation
- Replace sensor gasket
- Test heater circuit
- Verify signal accuracy
- Check for exhaust leaks
- Update ECU software
Use manufacturer-approved diagnostic tools
- Replace oxygen sensor
- Replace NOx sensor
- Inspect catalytic converter
- Perform full emissions test
- Reset adaptation values
Critical for maintaining emissions compliance
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the compatibility requirements for emissions sensors in 2017-Present Mercedes E-Class?
What are the compatibility requirements for emissions sensors in 2017-Present Mercedes E-Class?
The emissions sensors for the 2017-Present Mercedes E-Class are designed to be compatible with models equipped with Euro 6 emission standards. These sensors are specifically calibrated for the M274 and M264 engines, ensuring accurate readings for NOx, CO2, and particulate matter. Always verify the sensor part number with your vehicle's VIN to ensure compatibility.
Q2 What maintenance is required for emissions sensors in the Mercedes E-Class?
What maintenance is required for emissions sensors in the Mercedes E-Class?
Emissions sensors in the Mercedes E-Class require minimal maintenance but should be inspected during routine service intervals, typically every 10,000 miles. Ensure the sensor's electrical connections are clean and free of corrosion. Regularly check for fault codes using a diagnostic tool to identify potential issues early. Replace sensors if they show signs of wear or fail diagnostic tests.
Q3 How do I install or replace emissions sensors in a Mercedes E-Class?
How do I install or replace emissions sensors in a Mercedes E-Class?
To install or replace emissions sensors, first, locate the sensor near the exhaust system. Disconnect the electrical connector and use a specialized wrench to remove the old sensor. Apply anti-seize compound to the threads of the new sensor and install it securely. Reconnect the electrical connector and clear any fault codes using a diagnostic tool. Always refer to the vehicle's service manual for specific instructions.
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 fault codes using a diagnostic tool. Inspect the sensor's wiring and connections for damage or corrosion. Clean the sensor if it is dirty or replace it if it is faulty. Ensure the exhaust system is free of leaks, as these can affect sensor performance. If issues persist, consult a certified technician.
Q5 How can I optimize the performance of emissions sensors in my Mercedes E-Class?
How can I optimize the performance of emissions sensors in my Mercedes E-Class?
To optimize emissions sensor performance, ensure your vehicle's engine is running efficiently by maintaining proper air-fuel ratios and using high-quality fuel. Regularly clean the sensor and its connections to prevent buildup. Avoid short trips, as they can lead to incomplete combustion and sensor fouling. Use diagnostic tools to monitor sensor performance and address issues promptly.
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 servicing and replacing emissions sensors in 2017-Present Mercedes E-Class vehicles.
Technical Service Bulletin: Emissions Sensor Updates
Coming SoonThis bulletin outlines updates and improvements to emissions sensors for Mercedes E-Class models, including calibration changes and compatibility notes.
Mercedes E-Class Emissions Sensor Parts Catalog
Coming SoonThis catalog lists all available emissions sensors and related parts for 2017-Present Mercedes E-Class vehicles, including part numbers and compatibility details.
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Technical Information
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