Mercedes B9 Service: [Cost, Checklist, And What’s Included]

Is your Mercedes showing a “Service B9 Due” message on the dashboard while driving? What is the actual reason behind this message? Well, there’s no need to worry more!

Here, I will deliver an in-depth overview of the Mercedes B9 service code, its maintenance cost, what is included in its checklist, and how to reset and fix the indicator after service. Let’s go for it without wasting time!

What Is A Mercedes B9 Service?

Two types of services (A and B) are performed for Mercedes vehicles to maintain their performance, durability, and lifespan. Mercedes B9 service is one of these B services, which includes a comprehensive inspection of engine components, transmission, brakes, and more.

As the latest Mercedes service schedule, the B9 service is designed to protect your car from potential issues that can affect its health. It is a one-package combination of all crucial tasks that could improve your car’s performance. 

What items are included In the Mercedes B9 service?

Multiple items are involved in that particular service, each with its significance. However, here is the list and overview of included items in service B9 for Mercedes-Benz:

1. Oil and filter replacement
2. Brake fluid change
3. Spark plugs replacement
4. Air filter replacement
5. Wiper blade inspection/replacement
6. ATF (Automatic Transmission Fluid) replacement

Oil And Filter Replacement

The foremost step is replacing the old engine oil with a brand-new one. In that procedure, the mechanic drains the old oil and installs the new one to ensure the engine’s moving parts can operate smoothly and efficiently without overheating the engine. 

Oil lubricates the vehicle engine, so I recommend always using genuine oil from Mercedes manufacturers. It is more durable than other local oils and will perform for an extended period.

Brake Fluid Change

It is a type of hydraulic fluid used in hydraulic braking systems. Brake fluid transfers force into pressure and ensures the vehicle comes to a complete stop when the driver pushes the brake pedals. 

It has a limited time frame for performing well, and after that time, it loses its quality and reliability. However, the technicians will remove the old fluid from the vehicle’s master cylinder reservoir and add fresh fluid.

After that, he’ll check the brake pads and rotors to see if they need to be replaced. 

Spark Plugs Replacement

Spark plugs produce electricity in the engine, which ignites the air/fuel mixture. The vehicle’s combustion chamber is also powered by spark plugs, which ignite fuel. 

The ideal range for spark plugs to change is once 30,000 miles, but there are extended-range ranges that can last up to 100,000 miles. 

Therefore, it would be best to use high-quality, genuine spark plugs to protect your car’s engine and improve fuel economy.

Air Filter Replacement

Like other engine parts, the air filter does a great job. It ensures that air cannot enter the combustion chamber, and dirt-free and clean air filters improve the engines’ efficiency.

Moreover, it is essential to understand that air filter replacement is crucial to keeping the engine cooler and more efficient, and most dealers recommend having it every 90 days or 3 months. 

Wiper Blades Inspection/Replacement

Wiper blade inspection and cleaning is crucial for people who drive at night or in bad weather conditions such as foggy, snowy, rainy, or dusty. 

On the other hand, an issue with wiper blades could scratch or streak your Mercedes windshield. They are subjected to wear and tear over time, so regular inspection is essential. 

You may also need to replace the old wiper blades with new ones.

ATF Replacement

Automatic transmission fluids (ATFs) play a prime role in B9 service, performing various transmission tasks, such as heat dissipation, wear protection, and lubrication. 

However, replacing ATF when needed could be a small but worthwhile investment in your vehicle’s transmission’s lifecycle. 

Changing ATF every 30,000 to 60,000 miles (for manual) is the usual range most experts suggest.

Mercedes B9 Service Checklist

No.	Service Items
1	Oil and filter replacement
2	Brake fluid change
3	Spark plug replacement
4	Air filter replacement
5	Wiper blade inspection/replacement
6	ATF (Automatic Transmission Fluid) replacement

What Is Mercedes B9 Service Cost?

On average, B9 service costs are around $700-$1500. The price mentioned can be slightly low or high, and you can ask your dealership for the exact price. 

However, the total cost can depend on some factors, and here are these:

1. Car model
2. Labor rate
3. Location

Car Model

Your Mercedes-Benz model can affect the B9 service price because the service charges for the latest Mercedes models are higher than those for old ones. 

Labor Rate

Service rates for labor can be different due to experience, certifications, and brand identity. Highly skilled techs charge high due to their professional training and in-depth knowledge.

Location

Location is also essential when getting B9 service. For example, an owner living in the USA may pay  $700-$1500, while an owner in the UK may pay a more expensive or cheaper cost for Mercedes B9 Service.

Why Is A Mercedes-Benz B9 Service So Expensive?

Most passengers always wonder why they must pay expensive costs for B9 service maintenance on their Mercedes-Benz. Here I explain some factors that will remove their complaints about the expensiveness of that service.

Exclusive Image Of Mercedes

Mercedes is considered one of the top automakers in the world due to its luxury. Therefore, owners are ready to pay more for the exclusive image of Mercedes.

Expensive Tools And Gadgets

To inspect the vehicles accurately and comprehensively, mechanics must purchase extremely expensive advanced diagnostic tools, computer systems, and scanners. 

Highly Trained Technicians

The MB techs must undergo strict training, degrees, and certification programs to maintain the complexity of Mercedes vehicles, which can explain their high labor rates.

Expensive Auto Parts

Genuine parts are used in Mercedes B9 maintenance to maintain your Mercedes-Benz’s outstanding optimal performance at its peak. These parts are comparatively more expensive than aftermarket components. 

Tips To Make Good Choice

As a skilled Mercedes mechanic, I’ll share some of my thoughts and tips based on actual data that can help you make a good choice for getting a B9 service.

• Before going for maintenance, ask your chosen garage for the total expense and keep some extra money.
• Always check your selected shop’s ratings and client reviews before getting service. 
• Share your vehicle faults and driving experience with the mechanic to help him better analyze your car’s condition. 
• Ask for coupon codes and discounts if they are available on service plans. 

How Long Does A B9 Service Take?

The B9 service can typically take 2 to 4 hours but can also take up to 5 hours, depending on the season, appointment time, and the number of people already in the shop waiting for service.

Sometimes, your vehicle requires many maintenance tasks that could take more time than average. In busy seasons, the shop is full of clients waiting for service, so booking an appointment before going there would be best. 

Service B9: DIY Vs Professional

Like the Mercedes A9 Service, the B9 also demands detailed vehicle knowledge and proper preparation for completion. However, doing that without any technical know-how can lead to risks. 

A well-trained professional mechanic should properly handle maintenance tasks with expertise and special tools. Therefore, most techs (including me) always recommend getting B9 service from an expert.

Can I Do A B9 Service Myself?

If you have in-depth technical knowledge, the required tools, and experience with past DIY maintenance, you can do the B9 service yourself. However, I always recommend getting it from an accredited Mercedes repair centre.

When To Change The Air Filter?

Most air filter manufacturers and HVAC companies recommend changing filters every 90 days or 3 months. However, this can change depending on your location and dusty and dry climates. You can also seek advice from an expert.

When To Change Spark Plugs?

Spark plug replacement schedules can vary based on driving habits, engine conditions, and other factors. Most drivers recommend replacing the vehicle’s spark plugs once every 30,000 miles, but an extended range can last up to 100,000 miles.

When To Change Automatic Transmission Fluid?

• Every 30,000 to 60,000 miles for manual
• Every 60,000 to 100,000 miles for automatic

Transmission fluid replacement is recommended every 30,000 to 60,000 miles for manual vehicles. The range can be increased for automatic vehicles to 60,000 to 100,000 miles, and there’s no issue if you replace fluid early.  

How To Reset B9 Service Notification On A Mercedes?

There is no need to book an appointment to reset the message of warning after the B9 maintenance. You can do that by yourself in just minutes. Here is the quick video guide to reset service notifications from the indicator:

A properly well-maintained vehicle always has an edge in resale. Regular services are also crucial because minor maintenance makes passengers aware of small vehicle problems before they become potential issues. 

At the end of the article, we decided that the B9 service is essential for the detailed maintenance of Mercedes-Benz models. It includes several sub-items, like oil and filter changes, spark plugs, air filter replacement, and more!

So, whenever a message like “B9 Due, Mercedes B9 Service” appears on your Merc Dash, try to fix it soon by getting service or visiting your nearest repair shop or garage. 

Do not compromise your comfortable ride by ignoring dashboard warning lights or delaying getting service without any reason!