List of Mercedes Service Codes

Mercedes service codes can initially appear complex, but AutoExplain.com provides a detailed breakdown to simplify maintenance for Mercedes-Benz vehicles. By understanding these codes, technicians and owners can accurately identify necessary services, ensuring optimal performance and longevity of their vehicles, plus gain access to expert assistance in decoding Mercedes maintenance schedules and navigating complex repair procedures for peak performance. Rely on AutoExplain.com for expert insights into Mercedes-Benz maintenance and repair.

1. Decoding the Mercedes-Benz Service System

The Mercedes-Benz service system, known as “Assyst” and later “Assyst Plus,” is designed to inform owners and technicians about required maintenance. Initially, the system indicated services with letters ‘A’ or ‘B,’ corresponding to minor and major services, respectively. With the introduction of Assyst Plus, the system evolved to include a broader range of service codes, incorporating numbers and letters to specify additional maintenance items. This evolution aimed to provide a more detailed and accurate representation of the vehicle’s service needs, tailoring maintenance schedules to specific vehicle conditions and usage patterns.

1.1. Understanding Assyst

The initial “Assyst” system simplified maintenance with two primary service indicators:

• A Service: A minor service that typically includes an engine oil and filter change, along with a basic vehicle inspection. This service is designed to ensure the engine’s lubrication system is functioning correctly and to identify any potential issues early on.
• B Service: A major service encompassing an engine oil and filter change, replacement of the pollen filter, and a more comprehensive vehicle inspection. This service aims to address not only the engine’s needs but also the overall health and safety of the vehicle.

Additional service items were determined based on age or mileage, including:

• Air filter replacement
• Fuel filter replacement
• Brake fluid change
• Coolant change
• Spark plug replacement
• Gearbox oil/filter change

These additional services ensured that all critical components were maintained at the recommended intervals, preventing premature wear and potential failures.

1.2. The Evolution to Assyst Plus

“Assyst Plus” represented a significant upgrade, introducing more granular service codes. This advanced system considers time, wear-specific maintenance items, and special equipment relevant to maintenance, tailoring service needs with greater precision. The introduction of Assyst Plus aimed to move beyond generic service intervals, adapting maintenance schedules to the specific demands placed on the vehicle.

Early implementations, seen in models like the 211 E-Class, 251 R-Class, 164 ML-Class, and 169 A-Class, expanded the service codes to include letters up to ‘H.’ This meant services could be indicated as A, B, C, D, E, F, G, or H, each representing a different combination of maintenance tasks. The proliferation of service codes, however, led to confusion among owners and technicians familiar with the simpler A and B service designations.

To address this confusion, Mercedes-Benz refined the system around 2008 for models like the 204 C-Class and 212 E-Class. The refined system used ‘A’ or ‘B’ followed by numbers or letters to indicate additional service items. This resulted in combinations like A1, B1, A5, B5, A3, AK, AC, and B0, providing a more specific breakdown of required maintenance tasks. This change also coincided with the introduction of the Mercedes-Benz Digital Service Book (DSB), enhancing service record-keeping and transparency.

2. Unlocking Workshop Codes

Workshop codes provide a detailed insight into the specific service items required for a particular service. These codes can be accessed through the instrument cluster’s workshop menu, offering a clear breakdown of the necessary maintenance tasks. Understanding how to access and interpret these codes is essential for accurate service planning and execution.

2.1. Accessing the Workshop Menu

To access the workshop menu on most Mercedes-Benz vehicles with a 12-button steering wheel, follow these steps:

1. Turn the ignition to position 1.
2. Ensure the overall mileage is displayed.
3. Press and hold the call answer button.
4. While holding the call answer button, press and hold the OK button.

This sequence will bring up the workshop menu, providing access to detailed service information.

2.2. Interpreting Workshop Codes

Each service code translates to specific service items. For example:

• A Service Code 505: Indicates service item 1 (minor inspection) and service item 3 (engine oil and filter change).
• B1 Service Code E0E: Indicates service item 2 (major inspection), service item 3 (engine oil and filter change), and service item 4 (brake fluid change).

From these examples, we can deduce that:

• Service item 1 corresponds to an ‘A’ service.
• Service item 2 corresponds to a ‘B’ service.
• Service item 3, engine oil and filter change, is a standard component of every service.

These codes enable technicians to quickly identify the necessary tasks, ensuring comprehensive and accurate service.

3. Comprehensive List of Mercedes-Benz Service Items

Identifying service items correctly is crucial for performing the right maintenance tasks. This section provides a detailed list of service items commonly encountered in Mercedes-Benz vehicles, helping technicians and owners understand what each code represents and what tasks need to be performed.

3.1. Detailed Service Item Breakdown

The following list details the additional service items and their corresponding numbers:

Service Item	Description
1	Minor Inspection (A Service)
2	Major Inspection (B Service)
3	Engine Oil and Filter Change
4	Brake Fluid Change
5	Combination Filter (additional filter on some models)
8	Air Filter Replacement (Sometimes Differential Oil – Check Service Sheet)
10	Sunroof Guide Rails Clean/Regrease
11	Fuel Filter Replacement
12	Replace Spark Plugs
13	Engine Coolant Renewal
14	Main Coolant Circuit (Possibly Cooling System for Hybrids)
15	Towing Hitch Lubrication
20	Gearbox Oil Change/Filter Renewal
24	Cambelt Replacement/Waterpump Replace

It is essential to cross-reference these items with the service sheet for your specific vehicle model, as there may be important details that need to be considered. Service sheets can be accessed via WIS (Workshop Information System) or through automotive data providers like Autodata.

3.2. Example Service Sheet Overview

Consulting the service sheet for your vehicle model ensures that all necessary maintenance tasks are identified and performed correctly. Here is an example of the W212 Service Sheet Overview:

Service-Sheet-W212

Download

This sheet provides a comprehensive list of service items and their recommended intervals, helping technicians and owners stay on top of maintenance requirements.

4. Decoding Mercedes-Benz Service Codes

Understanding the combinations of letters and numbers in Mercedes-Benz service codes can seem daunting. However, recognizing patterns and understanding what each element signifies can simplify the process. This section breaks down common service codes and their meanings, providing a valuable reference for anyone working with Mercedes-Benz vehicles.

4.1. Comprehensive List of Display Codes, Workshop Codes, and Service Items

The following table provides a comprehensive list of display codes, workshop codes, and corresponding service items. This guide is not exhaustive but offers a solid foundation for understanding the Mercedes-Benz service system.

Display Code	Workshop Code	Service Items
A	505	1, 3
A1	D0D	1, 3, 4
A2
A3	550A	1, 3, 8, 11 (Diesel engine)
A3		1, 3, 8, 12 (Petrol engine)
A4	D50J	1, 3, 8, 10, 11
A5
A6	DD0S	1, 3, 4, 8, 10, 11
A7	G50M	1, 3, 20
A8	Q50V	1, 3, 10, 20
A9	GD0V	1, 3, 4, 20
A0	850D	1, 3, 10
AC	QD051	1, 3, 4, 10, 20
AF	KD001	1, 3, 4, 8, 12, 20
AH	801050E	1, 3, 13, 24
AG	VD0A1	1, 3, 4, 8, 10, 11, 20
AK	10D0E	1, 3, 13
AP	15D0K
B	606	2, 3
B1	E0E	2, 3, 4
B2	8E0N	2, 3, 4, 10
B3	560B	2, 3, 8, 11
B4	B60H	2, 3, 8, 10, 11
B5	5E0K	2, 3, 4, 8, 11
B5	3E0H	2, 3, 4, 8, 12
B6	DE0T	2, 3, 4, 8, 10, 11
B7	G60N	2, 3, 20
B7	GN061	2, 3, 15, 20
B8	Q60W	2, 3, 10, 20
B9	GE0W	2, 3, 4, 20
B0	1607	2, 3, 8
B0	960F	2, 3, 8, 10 (on a GL63)
BD	M60T	2, 3, 8, 11, 20
BE	V6031	2, 3, 8, 10, 11, 20
BF
BK	10E0F	2, 3, 4, 13
BK	14E0K	2, 3, 4, 11, 13 (Reader Submitted, W246)
BS	1Q60X	2, 3, 10, 13, 20

4.2. Real-World Example: Decoding a ‘BS’ Service

Consider a scenario where your Mercedes-Benz indicates that it is due for a ‘BS’ service. To understand what this entails, you can access the workshop menu to obtain more detailed information.

Mercedes BS Service Workshop Menu

The workshop menu provides the following details:

• Next service: BS
• Due in 315 days or 13,600 miles
• Workshop code: 1Q60X
• Service items: 2, 3, 10, 13, 20

Breaking down the service items:

• B Service (Items 2 & 3): Major inspection and engine oil/filter change.
• Additional Items:
  • Panoramic roof mechanism cleaned and regreased (Item 10)
  • Coolant renewed (Item 13)
  • Gearbox oil/filter change (Item 20)

This example demonstrates how to use the workshop menu and service codes to understand the specific maintenance tasks required for your vehicle.

4.3. Need Expert Assistance?

Navigating the complexities of Mercedes-Benz service codes can be challenging. If you find yourself struggling to decipher the codes or need assistance with a particular issue, AutoExplain.com is here to help. Our team of experienced technicians can provide remote technical support to diagnose problems, interpret service codes, and guide you through the repair process.

Contact AutoExplain.com via:

• WhatsApp: (+84)967469410
• Email: [email protected]

Our experts are ready to assist you with any Mercedes-Benz maintenance or repair needs, ensuring your vehicle receives the best possible care.

5. The Importance of Accurate Service Information

Accurate service information is crucial for maintaining the health and performance of your Mercedes-Benz vehicle. Using the correct service codes and understanding their meanings ensures that all necessary maintenance tasks are performed at the appropriate intervals. This not only prolongs the life of your vehicle but also helps prevent costly repairs down the road.

5.1. Preventing Costly Repairs

Regular maintenance based on accurate service information can identify potential issues early on, preventing them from escalating into major problems. For example, a simple brake fluid change (service item 4) can prevent corrosion and maintain the effectiveness of your braking system, avoiding the need for more extensive and expensive repairs later.

5.2. Maintaining Vehicle Performance

Performing the correct service items ensures that your vehicle operates at its optimal performance level. Replacing the air filter (service item 8) and fuel filter (service item 11) at the recommended intervals can improve engine efficiency and fuel economy, while a gearbox oil change (service item 20) can ensure smooth and reliable transmission performance.

5.3. Ensuring Safety

Accurate service information also plays a critical role in ensuring the safety of your vehicle. Regular inspections and maintenance of safety-related components, such as brakes, steering, and suspension, are essential for preventing accidents and protecting you and your passengers.

6. AutoExplain.com: Your Partner in Mercedes-Benz Maintenance

At AutoExplain.com, we understand the complexities of Mercedes-Benz maintenance and are committed to providing you with the expert support you need to keep your vehicle running smoothly. Our team of experienced technicians can assist you with a wide range of services, from decoding service codes to diagnosing complex issues and guiding you through the repair process.

6.1. Remote Technical Support

Our remote technical support services offer a convenient and cost-effective way to access expert assistance without having to visit a repair shop. Whether you are a seasoned technician or a DIY enthusiast, our team can provide the guidance and support you need to tackle any Mercedes-Benz maintenance or repair task.

6.2. Comprehensive Diagnostic Services

We offer comprehensive diagnostic services to help you identify the root cause of any issues you may be experiencing with your Mercedes-Benz vehicle. Using advanced diagnostic tools and techniques, our technicians can quickly and accurately pinpoint the problem, allowing you to make informed decisions about the necessary repairs.

6.3. Step-by-Step Repair Guidance

Once the problem has been diagnosed, our team can provide you with step-by-step repair guidance to help you complete the necessary repairs. Our detailed instructions, combined with our expert support, ensure that you can confidently tackle even the most challenging repair tasks.

6.4. Navigation Update and Key Programming Services

In addition to our maintenance and repair services, we also offer navigation update and key programming services. Keeping your navigation system up-to-date ensures that you have access to the latest maps and points of interest, while our key programming services can help you replace lost or damaged keys quickly and efficiently.

6.5. Contact AutoExplain.com Today

Don’t let the complexities of Mercedes-Benz maintenance overwhelm you. Contact AutoExplain.com today and let our team of experts provide you with the support you need to keep your vehicle running smoothly.

• Address: 4590 Angus Road, New York, United States
• WhatsApp: (+84)967469410
• Email: [email protected]
• Website: AutoExplain.com

Our goal is to empower you with the knowledge and support you need to maintain your Mercedes-Benz vehicle with confidence.

7. Troubleshooting Common Mercedes-Benz Issues

Mercedes-Benz vehicles are known for their reliability and performance, but like any vehicle, they can experience issues from time to time. Understanding common problems and their potential solutions can help you address these issues quickly and effectively, minimizing downtime and potential repair costs.

7.1. Addressing Electrical System Problems

Electrical system problems are common in modern vehicles, including Mercedes-Benz models. These issues can range from simple problems like a dead battery to more complex issues like faulty sensors or wiring harnesses.

Common Electrical Issues:

• Battery Problems: Dead batteries, parasitic drain, and alternator issues.
• Sensor Malfunctions: Faulty sensors can trigger warning lights and affect vehicle performance.
• Wiring Issues: Damaged or corroded wiring can cause a variety of electrical problems.

Troubleshooting Tips:

• Check the battery voltage and charging system.
• Scan for diagnostic trouble codes (DTCs) to identify faulty sensors.
• Inspect wiring harnesses for damage or corrosion.

7.2. Resolving Engine Performance Issues

Engine performance issues can manifest in various ways, including reduced power, poor fuel economy, and rough idling. Identifying the root cause of these issues is essential for restoring optimal engine performance.

Common Engine Issues:

• Misfires: Caused by faulty spark plugs, ignition coils, or fuel injectors.
• Vacuum Leaks: Can lead to poor engine performance and fuel economy.
• Sensor Problems: Faulty sensors, such as the mass airflow (MAF) sensor or oxygen sensors, can affect engine performance.

Troubleshooting Tips:

• Check spark plugs, ignition coils, and fuel injectors.
• Inspect vacuum lines for leaks.
• Scan for diagnostic trouble codes (DTCs) to identify faulty sensors.

7.3. Tackling Transmission Problems

Transmission problems can range from minor issues like rough shifting to more severe problems like complete transmission failure. Addressing these issues promptly can prevent further damage and costly repairs.

Common Transmission Issues:

• Rough Shifting: Can be caused by low transmission fluid, worn clutch plates, or faulty solenoids.
• Slipping Gears: Indicates internal transmission damage.
• Transmission Fluid Leaks: Can lead to low fluid levels and transmission damage.

Troubleshooting Tips:

• Check transmission fluid level and condition.
• Scan for diagnostic trouble codes (DTCs) related to the transmission.
• Inspect the transmission for leaks.

8. Staying Up-to-Date with Mercedes-Benz Technology

Mercedes-Benz vehicles are constantly evolving with new technologies and features. Staying up-to-date with these advancements is essential for technicians and owners alike, enabling them to effectively diagnose and repair the latest models.

8.1. Keeping Up with New Models and Systems

Mercedes-Benz releases new models and updates its existing models regularly. These updates often include new technologies and systems that require specialized knowledge and tools to diagnose and repair.

Tips for Staying Updated:

• Attend training courses and workshops on new Mercedes-Benz technologies.
• Subscribe to industry publications and online resources that cover the latest advancements.
• Utilize online forums and communities to connect with other technicians and share knowledge.

8.2. Utilizing Online Resources and Communities

Online resources and communities can provide valuable information and support for diagnosing and repairing Mercedes-Benz vehicles. These resources can include technical documentation, diagnostic tips, and troubleshooting guides.

Recommended Resources:

• Mercedes-Benz Workshop Information System (WIS): Provides access to official service manuals and technical documentation.
• Online Forums: Connect with other technicians and owners to share knowledge and ask questions.
• Automotive Data Providers: Companies like Autodata provide access to service information and diagnostic data.

8.3. The Role of AutoExplain.com in Staying Informed

AutoExplain.com is committed to providing technicians and owners with the latest information and support for Mercedes-Benz vehicles. Our team of experts stays up-to-date with the latest technologies and advancements, ensuring that we can provide you with accurate and reliable information.

9. Leveraging Technology for Efficient Diagnostics

Modern diagnostic tools and software play a crucial role in efficiently diagnosing and repairing Mercedes-Benz vehicles. These tools provide access to a wealth of information, allowing technicians to quickly identify problems and implement effective solutions.

9.1. Understanding Diagnostic Tools and Software

Diagnostic tools and software can read diagnostic trouble codes (DTCs), access live data, and perform various tests and calibrations. Understanding how to use these tools effectively is essential for efficient diagnostics.

Common Diagnostic Tools:

• Mercedes-Benz Star Diagnosis: A comprehensive diagnostic system used by Mercedes-Benz dealerships and authorized service centers.
• Generic OBD-II Scanners: Can read basic diagnostic trouble codes (DTCs) and access some live data.
• Specialized Diagnostic Software: Software programs like Xentry and Vediamo provide advanced diagnostic and programming capabilities.

9.2. Interpreting Diagnostic Trouble Codes (DTCs)

Diagnostic trouble codes (DTCs) provide valuable clues about the nature and location of a problem. Understanding how to interpret these codes is essential for accurate diagnosis.

DTC Interpretation Tips:

• Use a reliable diagnostic tool to read DTCs.
• Consult a service manual or online resource to understand the meaning of each code.
• Consider the context of the code and any related symptoms.

9.3. How AutoExplain.com Enhances Diagnostic Efficiency

AutoExplain.com enhances diagnostic efficiency by providing technicians with expert support and guidance. Our team can help you interpret diagnostic trouble codes (DTCs), access technical documentation, and perform advanced diagnostic procedures.

10. Addressing AdBlue System Issues in Mercedes-Benz Vehicles

AdBlue systems, also known as diesel exhaust fluid (DEF) systems, are designed to reduce emissions in diesel vehicles. However, these systems can experience issues that require specialized knowledge and tools to diagnose and repair.

10.1. Understanding AdBlue System Components

The AdBlue system consists of several key components, including:

• AdBlue Tank: Stores the diesel exhaust fluid (DEF).
• AdBlue Injector: Sprays DEF into the exhaust stream.
• AdBlue Pump: Delivers DEF from the tank to the injector.
• NOx Sensor: Monitors the level of nitrogen oxides (NOx) in the exhaust.
• Control Module: Regulates the operation of the AdBlue system.

10.2. Diagnosing Common AdBlue System Problems

Common AdBlue system problems include:

• Low DEF Level: Can trigger warning lights and affect vehicle performance.
• Faulty NOx Sensor: Can cause inaccurate readings and affect the operation of the AdBlue system.
• Clogged AdBlue Injector: Can prevent DEF from being injected into the exhaust stream.
• AdBlue Pump Failure: Can prevent DEF from being delivered to the injector.

10.3. AutoExplain.com’s Expertise in AdBlue Systems

AutoExplain.com provides expert support for diagnosing and repairing AdBlue system problems. Our team of experienced technicians can help you identify the root cause of the issue and guide you through the repair process.

11. The Future of Mercedes-Benz Servicing

The future of Mercedes-Benz servicing is likely to be shaped by advancements in technology and a greater emphasis on remote diagnostics and support. Staying ahead of these trends is essential for technicians and owners alike.

11.1. Emerging Trends in Automotive Diagnostics

Emerging trends in automotive diagnostics include:

• Remote Diagnostics: Allows technicians to diagnose and repair vehicles remotely, reducing downtime and costs.
• Artificial Intelligence (AI): Can be used to analyze diagnostic data and identify potential problems.
• Augmented Reality (AR): Can provide technicians with step-by-step repair instructions and guidance.

11.2. The Role of Remote Assistance in Modern Servicing

Remote assistance is playing an increasingly important role in modern servicing, allowing technicians to provide support and guidance to customers regardless of their location. This can be particularly valuable for complex diagnostic and repair tasks.

11.3. AutoExplain.com: Leading the Way in Remote Automotive Solutions

AutoExplain.com is committed to leading the way in remote automotive solutions. Our team of experts is constantly exploring new technologies and approaches to provide our customers with the best possible service and support. Contact AutoExplain.com today to experience the future of Mercedes-Benz servicing.

Remember, AutoExplain.com is always here to assist you with any Mercedes-Benz maintenance or repair needs. Contact us via WhatsApp at (+84)967469410 or email us at [email protected] for expert support and guidance. Let us help you keep your Mercedes-Benz vehicle running smoothly and efficiently.

12. FAQ: Mercedes-Benz Service Codes

Here are some frequently asked questions about Mercedes-Benz service codes:

1. What do Mercedes-Benz service codes mean?

Mercedes-Benz service codes indicate the specific maintenance tasks required for your vehicle, such as oil changes, filter replacements, and inspections.

2. How do I find the service code for my Mercedes-Benz?

You can find the service code in the instrument cluster’s workshop menu. Follow the steps outlined in Section 2.1 to access the menu.

3. What is the difference between an A service and a B service?

An A service is a minor service that includes an engine oil and filter change and a basic vehicle inspection, while a B service is a major service that includes an engine oil and filter change, pollen filter replacement, and a more comprehensive vehicle inspection.

4. How often should I perform an A service or a B service?

The recommended service intervals vary depending on your vehicle model and driving conditions. Consult your owner’s manual or a qualified technician for specific recommendations.

5. What are additional service items?

Additional service items are maintenance tasks that are required based on the age or mileage of your vehicle, such as air filter replacement, fuel filter replacement, brake fluid change, and spark plug replacement.

6. How do I interpret workshop codes?

Workshop codes provide detailed information about the specific service items required for a particular service. Refer to Section 3.1 for a breakdown of common service items and their corresponding numbers.

7. Where can I find the service sheet for my Mercedes-Benz?

Service sheets can be accessed via WIS (Workshop Information System) or through automotive data providers like Autodata.

8. Can I perform Mercedes-Benz maintenance myself?

While some maintenance tasks can be performed by DIY enthusiasts, it is recommended to consult a qualified technician for more complex repairs and diagnostic procedures.

9. What diagnostic tools do I need for Mercedes-Benz vehicles?

Common diagnostic tools include Mercedes-Benz Star Diagnosis, generic OBD-II scanners, and specialized diagnostic software like Xentry and Vediamo.

10. How can AutoExplain.com help with Mercedes-Benz maintenance?

AutoExplain.com provides expert remote technical support, comprehensive diagnostic services, and step-by-step repair guidance to help you maintain your Mercedes-Benz vehicle with confidence. Contact us via WhatsApp at (+84)967469410 or email us at AutoExplain[email protected] for assistance.