Mercedes-Benz Mercedes B-Class 2018-present Emissions & Sensors Specifications
Mercedes-Benz Mercedes B-Class 2018-present

Mercedes-Benz Mercedes B-Class 2018-present Emissions & Sensors Specifications

Explore detailed specifications for emissions sensors in the 2018-Present Mercedes B-Class. Learn about sensor types, locations, functionalities, and compatibility to ensure optimal performance and compliance with environmental standards. Ideal for technicians, owners, and enthusiasts.

Updated

Overview Specifications

This document provides detailed specifications and technical information about the emissions sensors used in the 2018-Present Mercedes B-Class. It covers sensor types, functionalities, installation details, and maintenance guidelines. Use this resource to understand the emissions control system, troubleshoot issues, and ensure compliance with environmental standards. The document is organized into sections for easy navigation and includes a quick reference guide for key specifications.

How to Use

Use the search bar to find specific terms or phrases related to emissions sensors. Enter keywords like 'NOx sensor' or 'O2 sensor' to locate relevant sections quickly.

Scroll through the document or use the table of contents to jump to specific sections. Each section is labeled clearly, and subsections provide detailed information on emissions sensor components and functionalities.

Key Specifications

O2 Sensor Operating Temperature

300-850°C

NOx Sensor Response Time

< 2 seconds

Sensor Voltage Range

0.1-1.0 V

Sensor Lifespan

100,000 miles

Operating Voltage

12-14 V

Available Specifications

Sensor Types and Functions

This section outlines the different types of emissions sensors used in the Mercedes B-Class, including their roles in monitoring and controlling exhaust emissions. Learn about the purpose of each sensor and how they contribute to the vehicle's overall emissions system.

Oxygen (O2) Sensors
  • Monitor oxygen levels in the exhaust system
  • Provide data to the engine control unit (ECU) for optimal fuel mixture
  • Located before and after the catalytic converter
  • Ensure efficient combustion and reduce emissions
Nitrogen Oxide (NOx) Sensors
  • Measure NOx levels in the exhaust gases
  • Essential for diesel engines to meet emission standards
  • Send data to the ECU for AdBlue injection control
  • Help reduce harmful nitrogen oxide emissions

Installation and Placement

This section provides details on the installation process and locations of emissions sensors in the Mercedes B-Class. Understand the correct positioning and wiring requirements for optimal sensor performance.

Sensor Locations
  • O2 sensors are placed upstream and downstream of the catalytic converter
  • NOx sensors are typically located in the exhaust pipe
  • Temperature sensors are integrated near the exhaust manifold
  • Pressure sensors are installed in the diesel particulate filter (DPF)
Installation Guidelines
  • Ensure proper torque when installing sensors
  • Use manufacturer-recommended gaskets and seals
  • Check wiring harness for secure connections
  • Follow ECU calibration procedures post-installation

Maintenance and Troubleshooting

This section covers maintenance practices and troubleshooting tips for emissions sensors. Learn how to diagnose common issues and ensure the longevity of the sensors.

Common Issues
  • Sensor contamination due to oil or fuel additives
  • Wiring harness damage or corrosion
  • Faulty readings due to sensor aging
  • Error codes related to sensor malfunction
Maintenance Tips
  • Regularly inspect sensors for physical damage
  • Clean sensors with appropriate solvents
  • Replace sensors as per the manufacturer's schedule
  • Use diagnostic tools to monitor sensor performance

Component Specifications

Overview

Type
Oxygen and NOx Sensors
Configuration
Dual-sensor system
Platform
Integrated ECU system
Material
Ceramic and stainless steel
Location
Exhaust system pre and post-catalyst

Dimensions

Length
2.36 inches (6 cm)
Diameter
0.79 inches (2 cm)
Thread Size
M18 x 1.5
Weight
0.33 lbs (150 grams)
Operating Temperature
392°F to 1472°F (200°C to 800°C)
Voltage Range
0.1V to 1.0V
Response Time
0.1 seconds

Materials

Sensor Element
Zirconia ceramic
Housing
Stainless steel
Wiring
High-temperature silicone
Connector
Thermoplastic

Features

Monitoring
  • Real-time exhaust gas analysis
  • Oxygen level detection
  • NOx level detection
  • Catalyst efficiency monitoring
integration
  • CAN bus communication
  • ECU compatibility
  • Self-diagnostic capability
  • Error code reporting
Durability
  • High-temperature resistance
  • Vibration resistance
  • Corrosion resistance
  • Long lifespan
Performance
  • Fast response time
  • High accuracy
  • Low power consumption
  • Wide operating range
Safety
  • Overheat protection
  • Short-circuit protection
  • Moisture resistance

Safety Features

Electrical Safety
  • Insulated wiring
  • Ground fault protection
Thermal Safety
  • Overheat shutdown
  • Thermal insulation
Environmental Protection
  • Sealed housing
  • Moisture-resistant connectors

Comfort Features

installation
  • Standard thread size
  • Tool-free connector
  • Plug-and-play design
Maintenance
  • Self-cleaning function
  • Easy access location
  • Minimal calibration required
Noise Reduction
  • Vibration dampening
  • Quiet operation

Accessories

installation
  • Sensor socket wrench
  • Thread sealant
  • Extension harness
Testing
  • Diagnostic scanner
  • Multimeter
  • Oscilloscope
Replacement
  • Spare sensor
  • O-ring kit
  • Wiring harness

Maintenance

Service interval
100,000 miles or 10 years
Service Items
  • Inspect sensor wiring
  • Check connector integrity
  • Test sensor output
  • Clean sensor tip
  • Replace if faulty
Maintenance Notes
Regular diagnostics recommended to ensure optimal performance

Warranty

Standard Warranty
Miles: 50,000
Years: 4
Coverage: Manufacturer defects
Extended Warranty
Miles: 100,000
Years: 8
Coverage: Sensor replacement
Emissions Warranty
Miles: 150,000
Years: 15
Coverage: Emissions-related components
Warranty Terms
Valid only with proper maintenance and installation

Production Details

Manufacturer
Bosch GmbH
Manufacturing Process
  • Ceramic molding
  • Precision machining
  • Automated assembly
Quality Control
Testing: High-temperature testing, Vibration testing, Electrical testing
Certifications: ISO 9001, ISO 14001, OEM standards
Sustainability Practices
  • Recycled materials
  • Energy-efficient production
  • Reduced emissions
Production Metrics
Annual Output: 5 million units
Defect Rate: < 0.1%
Lead Time: 4 weeks

Service Information for emissions_sensors Service

Maintenance and service requirements specific to emissions sensors

30,000
24
  • Inspect sensor wiring
  • Check for error codes
  • Test sensor output voltage
  • Clean sensor tip
  • Verify ECU communication

Ensure no exhaust leaks are present

60,000
48
  • Perform full diagnostic scan
  • Check sensor response time
  • Inspect connector for corrosion
  • Replace O-ring if necessary
  • Test catalyst efficiency

Use manufacturer-approved diagnostic tools

100,000
120
  • Replace sensor if performance is degraded
  • Inspect and replace wiring harness if needed
  • Verify all connections are secure
  • Perform system recalibration
  • Test overall emissions performance

Critical to maintain emissions compliance

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the compatibility requirements for emissions sensors in the 2018-Present Mercedes B-Class?

The emissions sensors for the 2018-Present Mercedes B-Class are designed to be compatible with the vehicle's onboard diagnostics system (OBD-II) and adhere to Euro 6 emission standards. These sensors are specifically calibrated for the B-Class engine variants, including both diesel and petrol models. Ensure the sensor part numbers match the manufacturer's specifications to maintain compatibility and optimal performance.

Q2

What maintenance is required for the emissions sensors in the Mercedes B-Class?

Regular maintenance for the emissions sensors includes periodic inspections during routine service intervals, typically every 10,000-15,000 miles. Ensure the sensors are free from debris and corrosion. Check the electrical connections for wear and tear. Replace sensors if fault codes related to emissions are detected. Always use genuine Mercedes parts to ensure proper functionality and compliance with emission standards.

Q3

How do I install or replace the emissions sensors in the Mercedes B-Class?

To install or replace emissions sensors, first, locate the sensor near the exhaust system. Disconnect the vehicle's battery for safety. Remove the old sensor using a suitable wrench, ensuring no damage to the exhaust components. Install the new sensor by threading it carefully into place and tightening to the specified torque. Reconnect the electrical harness and battery. Clear any fault codes using an OBD-II scanner.

Q4

What should I do if the emissions sensor in my Mercedes B-Class is malfunctioning?

If the emissions sensor malfunctions, first use an OBD-II scanner to retrieve fault codes. Common issues include sensor contamination or electrical failures. Inspect the sensor for physical damage or soot buildup. Clean or replace the sensor as needed. If the issue persists, check the wiring harness and connections for faults. Consult a certified Mercedes technician for advanced diagnostics.

Q5

How can I optimize the performance of the emissions sensors in my Mercedes B-Class?

To optimize performance, ensure the engine is properly tuned and running at optimal efficiency. Use high-quality fuel to reduce sensor contamination. Regularly inspect and clean the sensor and its surroundings. Avoid aftermarket modifications that may affect emissions. Follow the manufacturer’s maintenance schedule and replace sensors at recommended intervals to ensure accurate readings and compliance with emission standards.

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 B-Class Emissions Sensor Service Manual

Coming Soon

Detailed guide covering installation, maintenance, and troubleshooting of emissions sensors for the 2018-Present Mercedes B-Class.

Technical Service Bulletin for Emissions Sensors

Coming Soon

Latest updates and recommendations for emissions sensors in the Mercedes B-Class, including part updates and software adjustments.

Mercedes B-Class Parts Catalog

Coming Soon

Comprehensive catalog of genuine parts and accessories for the Mercedes B-Class, including emissions sensors and related components.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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