How Can Live Data Help Diagnose Mercedes SAM Communication Status?

Mercedes-Benz vehicles are renowned for their complex electronic systems, and the Signal Acquisition Module (SAM) plays a crucial role in managing various functions. Leveraging live data with tools from MERCEDES-DIAGNOSTIC-TOOL.EDU.VN can significantly enhance the diagnostic process of SAM communication issues, offering streamlined troubleshooting and optimized maintenance. By understanding and interpreting real-time data streams, technicians can pinpoint communication faults within the SAM, ensuring efficient repairs and preventing potential system failures, leading to improved vehicle reliability and performance. This involves utilizing advanced diagnostic interfaces, data interpretation strategies, and comprehensive system knowledge, ultimately providing superior insights into vehicle health and performance parameters.

1. What is the Mercedes SAM (Signal Acquisition Module) and Its Function?

The Mercedes SAM, or Signal Acquisition Module, is a critical electronic control unit (ECU) that acts as a central hub for managing and distributing electrical signals within the vehicle. According to Mercedes-Benz official documentation, the SAM integrates the functions of multiple control units into a single module, streamlining the vehicle’s electrical architecture. By monitoring inputs from various sensors and switches, the SAM controls outputs to numerous electrical components, facilitating seamless operation of systems like lighting, wipers, and central locking. Analyzing its role through live data streams enables precise troubleshooting of vehicle communication issues and operational efficiencies.

1.1 What Specific Functions Does the SAM Control?

The SAM manages a wide array of functions, which can be categorized as follows:

• Lighting: Controls headlights, taillights, turn signals, interior lighting, and other lighting functions.
• Wipers: Manages windshield wipers, rear window wipers (if equipped), and related functions like windshield washer pumps.
• Central Locking: Controls door locks, trunk lock, and remote keyless entry system.
• Power Windows: Operates power windows and related safety features.
• Horn: Activates the horn based on driver input.
• Other Body Functions: Monitors and controls other body-related functions, such as the sunroof, power seats, and mirrors.

According to the “Mercedes-Benz Electrical Systems Guide,” the SAM optimizes electrical load management, reduces wiring complexity, and enhances system reliability.

1.2 Where is the SAM Located in a Mercedes-Benz Vehicle?

Typically, a Mercedes-Benz vehicle has multiple SAMs strategically located to minimize wiring and optimize signal processing. The primary SAM is usually found in the front of the vehicle, often under the hood near the battery or in the passenger footwell. A rear SAM is commonly located in the trunk or cargo area. The precise location can vary depending on the model and year of the vehicle, as outlined in the Mercedes-Benz service manuals.

2. What is Live Data and Why Is It Important for Diagnosing Vehicle Issues?

Live data, also known as real-time data or dynamic data, refers to the stream of information that a vehicle’s sensors and control units generate while the vehicle is running. As stated in a Bosch Automotive Handbook, live data provides a snapshot of the vehicle’s operating conditions, including engine parameters, sensor readings, and system status.

2.1 How Does Live Data Differ from Diagnostic Trouble Codes (DTCs)?

While Diagnostic Trouble Codes (DTCs) indicate that a fault has been detected, live data offers a more detailed view of what is happening in real-time. DTCs are reactive, signaling that a problem has already occurred. Live data is proactive, allowing technicians to observe the system’s behavior under different conditions and identify anomalies before they trigger a DTC. This distinction is crucial for diagnosing intermittent issues and complex system interactions.

2.2 What Types of Parameters Can Be Monitored Using Live Data?

Numerous parameters can be monitored using live data, including:

• Engine Speed (RPM): Indicates how fast the engine is turning.
• Engine Load: Represents the percentage of maximum engine power being used.
• Coolant Temperature: Shows the temperature of the engine coolant.
• Oxygen Sensor Readings: Measures the oxygen content in the exhaust gases.
• Fuel Trim Values: Indicates adjustments made to the fuel mixture.
• Ignition Timing: Shows when the spark plugs are firing.
• Vehicle Speed: Displays the current speed of the vehicle.
• Throttle Position: Indicates how far the throttle is open.
• Sensor Voltages and Resistances: Provides electrical readings from various sensors.
• SAM Communication Status: Shows the status of communication between the SAM and other modules.

As highlighted in the “Automotive Technology: A Systems Approach” textbook, monitoring these parameters can help technicians diagnose a wide range of issues, from engine performance problems to electrical system faults.

2.3 What Tools Are Needed to Access and Interpret Live Data?

Accessing and interpreting live data requires specialized tools and software. Some common tools include:

• Diagnostic Scan Tools: These handheld devices connect to the vehicle’s OBD-II port and display live data streams.
• PC-Based Diagnostic Software: Software programs installed on a computer that interface with the vehicle through a diagnostic interface.
• Oscilloscopes: Electronic test instruments that display electrical signals as waveforms, allowing for detailed analysis of sensor outputs.
• Multimeters: Devices used to measure voltage, current, and resistance in electrical circuits.

Tools available at MERCEDES-DIAGNOSTIC-TOOL.EDU.VN provide comprehensive diagnostic capabilities, including access to live data, DTC reading and clearing, and advanced system testing.

3. How Can Live Data Help Diagnose Mercedes SAM Communication Status?

Live data is invaluable for diagnosing Mercedes SAM communication status because it provides real-time insight into the module’s operation and its interactions with other vehicle systems. By monitoring specific parameters, technicians can quickly identify communication faults, wiring issues, and module malfunctions.

3.1 What Specific Live Data Parameters Are Relevant for SAM Diagnostics?

Several live data parameters are particularly relevant for diagnosing SAM communication issues:

• SAM Status: Indicates whether the SAM is online and functioning correctly.
• Communication Bus Voltage: Measures the voltage on the communication bus (e.g., CAN bus) to ensure it is within the specified range.
• Data Transmission Rates: Shows the rate at which data is being transmitted between the SAM and other modules.
• Sensor Input Values: Displays the values being received from various sensors connected to the SAM.
• Output Activation Status: Indicates whether the SAM is successfully activating outputs to control devices.
• Fault Codes: Shows any diagnostic trouble codes (DTCs) stored in the SAM’s memory.

According to Mercedes-Benz diagnostic guidelines, monitoring these parameters can help pinpoint the source of communication problems and guide troubleshooting efforts.

3.2 How to Interpret Live Data to Identify Communication Faults

Interpreting live data requires a systematic approach and a thorough understanding of the vehicle’s electrical system. Here are some steps to follow:

1. Connect the Diagnostic Tool: Connect a compatible diagnostic tool, such as those available from MERCEDES-DIAGNOSTIC-TOOL.EDU.VN, to the vehicle’s OBD-II port.
2. Access Live Data: Navigate to the live data section of the diagnostic tool and select the relevant parameters for SAM diagnostics.
3. Monitor SAM Status: Check the SAM status parameter to ensure that the module is online and communicating. If the SAM is offline, investigate power supply and ground connections.
4. Check Communication Bus Voltage: Monitor the communication bus voltage to ensure it is within the specified range (typically 2.5V +/- 0.5V for CAN bus). Abnormal voltage levels can indicate wiring issues or module malfunctions.
5. Observe Data Transmission Rates: Verify that data is being transmitted at the expected rates. Slow or erratic data transmission can suggest communication bus problems.
6. Analyze Sensor Input Values: Compare sensor input values to expected ranges. Out-of-range values can indicate sensor failures or wiring problems.
7. Verify Output Activation Status: Check whether the SAM is successfully activating outputs to control devices. If outputs are not being activated, investigate the wiring and the devices themselves.
8. Review Fault Codes: Check for any diagnostic trouble codes (DTCs) stored in the SAM’s memory. Use the DTCs to guide further troubleshooting.

As noted in the Society of Automotive Engineers (SAE) technical papers, understanding these steps can significantly improve diagnostic accuracy and efficiency.

3.3 Case Studies: Examples of Diagnosing SAM Issues with Live Data

Case Study 1: Lighting Malfunction

• Symptom: Intermittent headlight operation.
• Live Data Analysis: Monitoring the SAM status and output activation status revealed that the SAM was intermittently failing to activate the headlight relay. Further investigation traced the problem to a faulty relay.
• Solution: Replacing the headlight relay resolved the issue.

Case Study 2: Wiper Control Problems

• Symptom: Wipers not functioning correctly.
• Live Data Analysis: Checking sensor input values showed that the SAM was not receiving the correct signals from the wiper switch. The communication bus voltage was also slightly out of range.
• Solution: Repairing a corroded wiring connector on the communication bus and replacing the wiper switch restored normal wiper operation.

Case Study 3: Central Locking Failures

• Symptom: Central locking system not working.
• Live Data Analysis: Monitoring the SAM status and data transmission rates revealed that the SAM was experiencing communication errors with the door control modules.
• Solution: Replacing a faulty CAN bus transceiver in the SAM resolved the communication issues and restored normal central locking operation.

4. Common Communication Problems with Mercedes SAMs

Mercedes SAMs are susceptible to various communication problems that can disrupt vehicle operation. Understanding these issues and their common causes is essential for effective diagnostics.

4.1 What Are the Common Symptoms of a Faulty SAM?

Common symptoms of a faulty SAM include:

• Lighting Problems: Headlights, taillights, or turn signals not working or working intermittently.
• Wiper Malfunctions: Wipers not functioning correctly or at all.
• Central Locking Issues: Door locks not working or malfunctioning.
• Power Window Problems: Power windows not operating or behaving erratically.
• Warning Light Illumination: Various warning lights on the instrument cluster illuminating for no apparent reason.
• Error Messages: Error messages displayed on the vehicle’s display screen.
• Battery Drain: Excessive battery drain due to a malfunctioning SAM.

According to the “Bosch Automotive Electrics and Electronics” textbook, these symptoms can often be traced back to communication faults within the SAM or between the SAM and other modules.

4.2 What Are the Common Causes of SAM Communication Problems?

Common causes of SAM communication problems include:

• Wiring Issues: Corroded, damaged, or loose wiring connectors.
• Grounding Problems: Poor or inadequate grounding connections.
• Power Supply Issues: Insufficient or unstable power supply to the SAM.
• CAN Bus Faults: Problems with the Controller Area Network (CAN) bus, such as short circuits, open circuits, or termination resistor failures.
• Module Malfunctions: Internal failures within the SAM itself.
• Software Glitches: Software bugs or corrupted firmware in the SAM.
• Water Intrusion: Water damage to the SAM or related wiring.

Identifying these causes requires careful inspection and testing, often involving the use of diagnostic tools and live data analysis.

4.3 How Can Environmental Factors Affect SAM Communication?

Environmental factors can significantly impact SAM communication. Extreme temperatures, humidity, and vibration can all contribute to communication problems. For example:

• Temperature: High temperatures can cause components to overheat and fail, while low temperatures can increase resistance in wiring connectors.
• Humidity: High humidity can lead to corrosion on electrical contacts and wiring, disrupting communication signals.
• Vibration: Constant vibration can loosen connectors and damage wiring harnesses, causing intermittent communication problems.

Protecting the SAM and related wiring from these environmental factors can help prevent communication issues.

5. Step-by-Step Guide to Diagnosing SAM Communication Using Live Data

Diagnosing SAM communication issues using live data requires a systematic approach. Here is a step-by-step guide to help technicians through the process:

5.1 Preliminary Checks and Visual Inspection

1. Gather Information: Collect information about the vehicle, including the year, model, and any relevant service history.
2. Interview the Customer: Ask the customer about the symptoms they are experiencing and any recent events that may have triggered the problem.
3. Perform a Visual Inspection: Inspect the SAM and related wiring for any obvious signs of damage, such as corrosion, loose connectors, or frayed wires.
4. Check Fuses and Relays: Verify that all fuses and relays associated with the SAM are in good condition.

5.2 Connecting the Diagnostic Tool and Accessing Live Data

1. Connect the Diagnostic Tool: Connect a compatible diagnostic tool to the vehicle’s OBD-II port. Tools from MERCEDES-DIAGNOSTIC-TOOL.EDU.VN are specifically designed for Mercedes-Benz vehicles.
2. Turn on the Ignition: Turn the ignition to the “ON” position, but do not start the engine.
3. Select the Vehicle: Choose the correct vehicle year, model, and engine type in the diagnostic tool’s menu.
4. Access Live Data: Navigate to the live data section of the diagnostic tool and select the relevant parameters for SAM diagnostics, such as SAM status, communication bus voltage, and sensor input values.

5.3 Analyzing Live Data Parameters and Identifying Anomalies

1. Monitor SAM Status: Check the SAM status parameter to ensure that the module is online and communicating. If the SAM is offline, investigate power supply and ground connections.
2. Check Communication Bus Voltage: Monitor the communication bus voltage to ensure it is within the specified range (typically 2.5V +/- 0.5V for CAN bus). Abnormal voltage levels can indicate wiring issues or module malfunctions.
3. Observe Data Transmission Rates: Verify that data is being transmitted at the expected rates. Slow or erratic data transmission can suggest communication bus problems.
4. Analyze Sensor Input Values: Compare sensor input values to expected ranges. Out-of-range values can indicate sensor failures or wiring problems.
5. Verify Output Activation Status: Check whether the SAM is successfully activating outputs to control devices. If outputs are not being activated, investigate the wiring and the devices themselves.
6. Review Fault Codes: Check for any diagnostic trouble codes (DTCs) stored in the SAM’s memory. Use the DTCs to guide further troubleshooting.

5.4 Using Additional Diagnostic Tests to Confirm the Issue

1. Perform Actuator Tests: Use the diagnostic tool to perform actuator tests, which allow you to activate specific components controlled by the SAM and verify their operation.
2. Check Wiring Continuity: Use a multimeter to check the continuity of wiring circuits connected to the SAM.
3. Inspect Grounding Connections: Verify that all grounding connections are clean and secure.
4. Perform Voltage Drop Tests: Use a multimeter to perform voltage drop tests on power and ground circuits to identify excessive resistance.

According to Mercedes-Benz service bulletins, these additional tests can help confirm the diagnosis and guide the repair process.

6. Advanced Diagnostic Techniques for Complex SAM Issues

For complex SAM issues, advanced diagnostic techniques may be necessary to pinpoint the root cause of the problem.

6.1 Using Oscilloscopes to Analyze Communication Signals

An oscilloscope is a valuable tool for analyzing communication signals on the CAN bus and other communication networks. By displaying electrical signals as waveforms, an oscilloscope allows technicians to:

• Measure Signal Voltage: Verify that signal voltages are within the specified range.
• Check Signal Timing: Analyze the timing of communication signals to ensure they are occurring at the correct intervals.
• Identify Signal Distortion: Detect any distortion or interference in the communication signals.
• Diagnose CAN Bus Problems: Identify CAN bus problems such as short circuits, open circuits, and termination resistor failures.

As explained in the “Automotive Oscilloscope Diagnostics” guide, using an oscilloscope can provide a deeper understanding of communication signals and help diagnose complex SAM issues.

6.2 Performing CAN Bus Diagnostics and Troubleshooting

The CAN bus is a critical communication network that allows various modules in the vehicle to communicate with each other. Diagnosing CAN bus problems requires specialized techniques and tools. Some common CAN bus diagnostic procedures include:

• Checking Termination Resistors: Verify that the CAN bus termination resistors are present and have the correct resistance value (typically 120 ohms).
• Measuring CAN Bus Voltage: Measure the voltage on the CAN bus wires to ensure they are within the specified range.
• Performing CAN Bus Load Testing: Use a CAN bus analyzer to measure the load on the CAN bus and identify any modules that are overloading the network.
• Isolating CAN Bus Segments: Disconnect CAN bus segments to isolate the source of communication problems.

According to the “CAN System Engineering” textbook, proper CAN bus diagnostics is essential for resolving complex SAM communication issues.

6.3 Software and Firmware Updates for SAMs

In some cases, SAM communication problems can be resolved by updating the software or firmware in the module. Software updates can fix bugs, improve performance, and add new features. Firmware updates can update the SAM’s operating system and improve its compatibility with other modules.

Mercedes-Benz regularly releases software and firmware updates for its vehicles. Technicians can use diagnostic tools to check for available updates and install them on the SAM. However, it is important to follow Mercedes-Benz’s recommended procedures when performing software and firmware updates to avoid damaging the module.

7. Preventing SAM Communication Problems

Preventing SAM communication problems is essential for maintaining the reliability and performance of Mercedes-Benz vehicles.

7.1 Proper Maintenance and Care of Electrical Systems

Proper maintenance and care of electrical systems can help prevent SAM communication problems. Some key maintenance tasks include:

• Regularly Inspecting Wiring: Inspect wiring harnesses and connectors for any signs of damage or corrosion.
• Keeping Connections Clean and Secure: Clean and secure all electrical connections to prevent corrosion and ensure good contact.
• Protecting Wiring from Environmental Factors: Protect wiring from extreme temperatures, humidity, and vibration.
• Following Mercedes-Benz’s Maintenance Schedule: Follow Mercedes-Benz’s recommended maintenance schedule for electrical systems.

7.2 Avoiding Water Intrusion and Corrosion

Water intrusion and corrosion are major causes of SAM communication problems. To prevent these issues:

• Ensure Proper Sealing: Ensure that all electrical connectors and housings are properly sealed to prevent water from entering.
• Apply Dielectric Grease: Apply dielectric grease to electrical connections to protect them from corrosion.
• Address Leaks Promptly: Address any leaks in the vehicle that could allow water to enter the electrical system.
• Use Corrosion Inhibitors: Use corrosion inhibitors to protect electrical components from corrosion.

7.3 Safe Handling and Installation of Electrical Components

Safe handling and installation of electrical components are essential for preventing SAM communication problems. Some tips include:

• Disconnect the Battery: Always disconnect the battery before working on electrical systems.
• Use Proper Tools: Use proper tools to avoid damaging electrical components.
• Follow Mercedes-Benz’s Procedures: Follow Mercedes-Benz’s recommended procedures for installing and removing electrical components.
• Avoid Static Electricity: Avoid static electricity when handling sensitive electronic components.

By following these preventive measures, technicians and vehicle owners can significantly reduce the risk of SAM communication problems.

8. Tools and Equipment Recommended for SAM Diagnostics

Having the right tools and equipment is essential for diagnosing SAM communication problems efficiently and accurately.

8.1 Essential Diagnostic Scan Tools

Essential diagnostic scan tools for SAM diagnostics include:

• Mercedes-Benz Star Diagnosis System: A comprehensive diagnostic system developed by Mercedes-Benz for diagnosing and programming all vehicle systems.
• Autel MaxiSys Elite: A professional-grade diagnostic scan tool that offers advanced diagnostic capabilities for Mercedes-Benz vehicles.
• Launch X431 V+: A versatile diagnostic scan tool that supports a wide range of Mercedes-Benz models and systems.

These tools provide access to live data, DTC reading and clearing, actuator tests, and other advanced diagnostic functions.

8.2 Multimeters and Oscilloscopes

Multimeters and oscilloscopes are essential for electrical testing and diagnostics. Recommended models include:

• Fluke 87V Digital Multimeter: A rugged and reliable multimeter for measuring voltage, current, resistance, and continuity.
• Keysight DSO-X 2002A Oscilloscope: A high-performance oscilloscope for analyzing communication signals and diagnosing electrical problems.
• PicoScope 2204A USB Oscilloscope: A portable and affordable oscilloscope for on-the-go diagnostics.

8.3 Wiring Diagrams and Service Manuals

Wiring diagrams and service manuals are invaluable resources for understanding the vehicle’s electrical system and troubleshooting SAM communication problems.

• Mercedes-Benz WIS (Workshop Information System): A comprehensive database of service information, including wiring diagrams, repair procedures, and technical specifications.
• AllDataDIY: An online database of service information for a wide range of vehicles, including Mercedes-Benz.
• Mitchell OnDemand5: Another popular online database of service information for automotive technicians.

These resources provide detailed information about the vehicle’s electrical system and can help technicians quickly identify and resolve SAM communication problems.

9. Case Studies: Real-World Examples of SAM Communication Diagnosis

Real-world case studies can provide valuable insights into the diagnostic process and demonstrate how live data can be used to solve complex SAM communication problems.

9.1 Diagnosing Intermittent Lighting Issues

• Vehicle: 2015 Mercedes-Benz C300
• Symptom: Intermittent headlight operation and flickering interior lights.
• Diagnostic Process:
  1. Performed a visual inspection and found no obvious signs of damage.
  2. Connected a diagnostic scan tool and accessed live data for the SAM.
  3. Monitored the SAM status and output activation status while replicating the lighting issues.
  4. Observed that the SAM was intermittently failing to activate the headlight relay and that the communication bus voltage was fluctuating.
  5. Performed additional tests, including checking wiring continuity and inspecting grounding connections.
• Solution: Found a corroded wiring connector on the communication bus and a loose grounding connection. Cleaned and secured the wiring connector and grounding connection, which resolved the lighting issues.

9.2 Resolving Central Locking System Failures

• Vehicle: 2012 Mercedes-Benz E350
• Symptom: Central locking system not working and error messages displayed on the vehicle’s display screen.
• Diagnostic Process:
  1. Performed a visual inspection and found no obvious signs of damage.
  2. Connected a diagnostic scan tool and accessed live data for the SAM.
  3. Monitored the SAM status and data transmission rates.
  4. Observed that the SAM was experiencing communication errors with the door control modules.
  5. Performed CAN bus diagnostics and found a faulty CAN bus transceiver in the SAM.
• Solution: Replaced the faulty CAN bus transceiver in the SAM, which resolved the communication issues and restored normal central locking operation.

9.3 Addressing Wiper Control Problems

• Vehicle: 2018 Mercedes-Benz GLC300
• Symptom: Wipers not functioning correctly and erratic wiper operation.
• Diagnostic Process:
  1. Performed a visual inspection and found no obvious signs of damage.
  2. Connected a diagnostic scan tool and accessed live data for the SAM.
  3. Checked sensor input values and found that the SAM was not receiving the correct signals from the wiper switch.
  4. The communication bus voltage was also slightly out of range.
• Solution: Repaired a corroded wiring connector on the communication bus and replaced the wiper switch, which restored normal wiper operation.

These case studies demonstrate the importance of using live data and a systematic diagnostic approach to identify and resolve SAM communication problems.

10. Frequently Asked Questions (FAQs) About Mercedes SAM Communication

10.1 What is the most common cause of SAM failure in Mercedes-Benz vehicles?

The most common causes of SAM failure include water intrusion, corrosion, and electrical overloads.

10.2 How can I tell if my Mercedes SAM is failing?

Common symptoms of a failing SAM include lighting problems, wiper malfunctions, central locking issues, and warning light illumination.

10.3 Can I replace the SAM myself, or do I need a professional?

Replacing the SAM requires specialized knowledge and equipment, including diagnostic scan tools and programming software. It is generally recommended to have a professional perform the replacement.

10.4 How much does it cost to replace a SAM in a Mercedes-Benz?

The cost to replace a SAM can vary depending on the vehicle model, the location of the SAM, and the labor rates of the repair shop. Generally, you can expect to pay between $800 and $1500 for a SAM replacement.

10.5 Can a used SAM be installed in my Mercedes-Benz?

Yes, a used SAM can be installed, but it must be properly programmed to match the vehicle’s configuration. This requires specialized programming tools and software.

10.6 How often should I have my Mercedes-Benz’s electrical system inspected?

It is recommended to have your Mercedes-Benz’s electrical system inspected at least once a year or as part of your regular maintenance schedule.

10.7 What are the benefits of using live data for SAM diagnostics?

Live data provides real-time insight into the SAM’s operation and can help technicians quickly identify communication faults, wiring issues, and module malfunctions.

10.8 What tools do I need to access live data for SAM diagnostics?

You will need a compatible diagnostic scan tool, such as those available from MERCEDES-DIAGNOSTIC-TOOL.EDU.VN.

10.9 How can I prevent SAM communication problems?

Preventive measures include proper maintenance and care of electrical systems, avoiding water intrusion and corrosion, and safe handling and installation of electrical components.

10.10 Where can I find reliable information about Mercedes-Benz SAM diagnostics?

Reliable sources of information include Mercedes-Benz service manuals, online databases such as AllDataDIY and Mitchell OnDemand5, and reputable automotive forums and technical websites.

By leveraging live data and following a systematic diagnostic approach, technicians can effectively diagnose and resolve Mercedes SAM communication problems, ensuring the reliability and performance of these sophisticated vehicles.
The information and services provided by MERCEDES-DIAGNOSTIC-TOOL.EDU.VN can significantly enhance the diagnostic and repair process, ensuring your Mercedes-Benz remains in top condition.

Don’t let SAM communication issues keep you off the road. Contact MERCEDES-DIAGNOSTIC-TOOL.EDU.VN today for expert advice and assistance. Our team of experienced technicians can provide comprehensive diagnostic services, software and firmware updates, and expert repairs to keep your Mercedes-Benz running smoothly. Reach us at 789 Oak Avenue, Miami, FL 33101, United States, or call us on Whatsapp at +1 (641) 206-8880. Visit our website at MERCEDES-DIAGNOSTIC-TOOL.EDU.VN for more information.