2009 BMW 335d Complete Service & Maintenance Schedule

Key Takeaways

• CBS System: The 2009 BMW 335d uses the Condition Based Service (CBS) system. Sensors and special algorithms take your individual driving conditions into account to determine service requirements dynamically . Service interval warnings are standard equipment .
• Engine: The 335d is powered by the M57 3.0-liter sequential twin-turbocharged diesel inline-six, producing 265 horsepower and 425 lb-ft of torque. EPA fuel economy is 23 mpg city / 36 mpg highway .
• Oil Change Interval: The CBS system determines oil service timing. Independent specialists recommend changing synthetic oil every 5,000 miles for optimal engine health .
• Oil Specification: The M57 diesel requires synthetic oil meeting BMW Longlife-04 specifications. 5W-30 viscosity is the recommended grade .
• Diesel Exhaust Fluid (DEF): This is a critical consumable for the SCR emissions system. Refills coincide with oil change intervals (approximately every 15,000 miles) and were covered by the BMW Maintenance Program for the first 4 years or 50,000 miles . Ignoring DEF warnings will eventually prevent the car from starting .
• Brake Fluid: BMW recommends brake fluid replacement every 2 years .
• Maintenance Program: The 2009 335d includes BMW Maintenance Program coverage for 48 months or 50,000 miles, covering factory-recommended maintenance as determined by the CBS system .

Understanding BMW's Condition Based Service (CBS) System

The 2009 BMW 335d is equipped with the Condition Based Service (CBS) system. This system uses sensors and algorithms to monitor vehicle conditions and calculate when service is actually needed based on your individual driving profile . It eliminates the need for a traditional fixed-mileage schedule.

CBS Tracked Service Items:

• Engine oil
• Brake pads (front and rear separately)
• Brake fluid
• Vehicle check
• Legally mandated inspections
• Diesel particulate filter

Service Data in the Remote Control:

Your vehicle stores service requirements on your remote control key. Your BMW Service Advisor can read this data to propose an optimized maintenance approach .

Important: Make sure the date is always set correctly in your instrument cluster; otherwise, the effectiveness of Condition Based Service (CBS) is not assured .

Engine Oil Service

BMW Factory Schedule

The CBS system determines oil change intervals based on driving conditions. The BMW Maintenance Program covers oil services during the warranty period .

Oil Specifications

• Oil Type: 5W-30 synthetic oil meeting BMW Longlife-04 specifications for diesel engines
• Filter: Replace oil filter with every oil change

Owner Guidance

Motor oil is the single most important element in keeping your engine healthy . Independent specialists recommend changing synthetic motor oil every 5,000 miles for the M57 diesel engine . Always replace the filter when changing the oil.

Diesel Exhaust Fluid (DEF) – Critical Service Item

The 2009 335d's Selective Catalyst Reduction (SCR) system requires Diesel Exhaust Fluid (also known as AdBlue or urea) to reduce NOx emissions .

Important DEF Service Points:

• DEF refills coincide with recommended oil change intervals (approximately every 15,000 miles)
• Refills are covered by the BMW Maintenance Program for the first 4 years or 50,000 miles
• A warning on the dash will appear; if ignored, the vehicle will eventually be unable to restart
• The SCR system holds approximately 5.75 gallons of DEF across active and passive tanks

DEF System Components

Tank Specifications:

• Active tank capacity: 7.4 liters (1.95 gallons)
• Passive tank capacity: 14.4 liters (3.80 gallons)

Known DEF System Issues:

• The SCR tank temperature sensor can degrade over time, requiring replacement of the entire tank assembly
• Temperature sensor failure codes: 46F4, 46F9, 4D32, P205B, P205C
• Level sensor failure codes: 203C11, 203D12, 4BAC, 4D10, P203A, P203D, P209F
• The SCR tank is a known service item for 2008-2009 production vehicles

Brake Fluid Service

BMW Factory Schedule

Brake fluid replacement is a time-based service. BMW recommends replacing brake fluid every 2 years .

Transmission Fluid Service

OEM Position

BMW often designates automatic transmission fluid as "lifetime fill" for normal operation. However, specialists note that fluid and filter changes remove harmful abrasives and corrosive chemicals that damage expensive drivetrain components .

Service Considerations

• The 2009 335d uses a ZF automatic transmission requiring ZF Lifeguard 6 fluid
• The transmission is one of the most neglected service areas on a car

100,000-Mile Service

A 100,000-mile service for the 2009 BMW 335d L6-3.0L Turbo Diesel commonly includes :

Estimated Cost: $352 (independent shop) to $561 (dealer) .

Fuel System & Diesel Particulate Filter

Diesel Fuel Quality

The M57 diesel performs better with high-quality diesel fuel to prevent carbon buildup issues .

Diesel Particulate Filter (DPF)

• The CBS system monitors the DPF
• An indicator lamp may illuminate if the diesel particulate filter requires service

Battery Care

BMW recommends that if your car is driven only for short distances of less than 10 miles over a prolonged period, without an occasional drive at highway speeds, the battery may require special attention .

General Service Recommendations Summary

The CBS system is the ultimate authority for your specific vehicle. This schedule provides context for the 2009 BMW 335d's common service needs:

Frequently Asked Questions

1. How often should I change the oil in my 2009 BMW 335d?

The CBS system determines the interval based on driving conditions. Independent specialists recommend changing synthetic oil every 5,000 miles for optimal engine health .

2. What oil does the 2009 BMW 335d require?

The M57 diesel engine requires 5W-30 synthetic oil meeting BMW Longlife-04 specifications . Always replace the oil filter when changing the oil.

3. What is Diesel Exhaust Fluid (DEF) and why is it important?

DEF (urea) is used in the SCR system to reduce emissions . Refills are required approximately every 15,000 miles and are covered by the BMW Maintenance Program for the first 4 years or 50,000 miles. Ignoring DEF warnings will eventually prevent the car from starting .

4. How do I know if my DEF system has a problem?

DEF system issues may trigger the Service Engine Soon lamp with fault codes related to the SCR active tank temperature sensor, level sensor, or heating element . The temperature sensor in the active tank can degrade over time, requiring tank replacement .

5. When should the brake fluid be replaced?

BMW recommends brake fluid replacement every 2 years .

6. Does the 2009 BMW 335d have a timing belt or timing chain?

The M57 diesel engine uses a timing chain designed for the life of the engine. Regular oil changes are critical for chain longevity.

7. When should the transmission fluid be changed?

BMW designates it as "lifetime fill," but transmission service is commonly included in the 100,000-mile service . The ZF transmission requires ZF Lifeguard 6 fluid .

8. What is the 100,000-mile service for the 2009 BMW 335d?

The 100,000-mile service typically includes front brake pad replacement, oil and filter change, transmission fluid service, and instrument panel gauge checks. Estimated cost ranges from $352 to $561 depending on service provider .

9. How much DEF does the 2009 BMW 335d hold?

The SCR system holds approximately 5.75 gallons of DEF across the active and passive tanks combined .

10. Is the 2009 BMW 335d expensive to maintain?

Maintenance costs are above average for non-luxury vehicles but typical for premium German diesel cars. The DEF system adds specific consumable requirements. Regular preventative maintenance is important for extending vehicle life.

*Always consult your vehicle's owner's manual and CBS system for the most accurate maintenance requirements for your specific 2009 BMW 335d. Maintenance needs may vary by production date and driving conditions.*