2010 BMW 335d Maintenance Schedule & Service Intervals

Key Takeaways

• CBS System: The 2010 BMW 335d uses the Condition Based Service (CBS) system, which dynamically determines maintenance needs based on actual driving conditions rather than a fixed schedule . Service interval warnings are standard equipment .
• Oil Change Interval: The CBS system determines oil service timing. BMW recommends changing oil at least once per year . Independent specialists recommend changing synthetic oil every 5,000 miles for optimal engine health .
• Oil Specification: The M57 diesel engine requires BMW High Performance 5W-30 Diesel Synthetic Oil . BMW LL-04 approved low-ash synthetic oil is also acceptable if BMW oil is unavailable . Capacity is approximately 7.5 quarts .
• Brake Fluid: BMW recommends brake fluid replacement every 2 years, regardless of mileage .
• Diesel Exhaust Fluid (DEF): This is a critical consumable for the SCR emissions system. BMW recommends topping off the DEF reservoir at every oil change . Running out of DEF may prevent the engine from starting .
• Transmission Fluid: BMW specifies automatic transmission fluid replacement at 100,000-mile intervals .
• Maintenance Program: The 2010 335d includes BMW Maintenance Program coverage for 48 months or 50,000 miles, covering factory-recommended maintenance as determined by the CBS system .

Understanding the Condition Based Service (CBS) System

The 2010 BMW 335d is equipped with the Condition Based Service (CBS) system, which uses sensors and algorithms to determine when maintenance is required based on your individual driving conditions . This system eliminates the need for a traditional fixed-mileage schedule and ensures maintenance is performed only when necessary.

CBS Tracked Service Items (as shown in OEM documentation):

• Engine oil and filter changes
• Brake fluid replacement
• Front and rear brake pad replacement
• Vehicle check
• Microfilter (cabin air filter) replacement

Service interval warnings are displayed on the instrument cluster and are standard equipment on the 2010 335d .

Engine Oil Service

BMW Factory Schedule

The CBS system determines oil change intervals based on driving conditions. BMW recommends changing engine oil at least once per year . At every 2nd engine oil change, BMW recommends replacing the intake air filter element and diesel fuel filter .

Oil Specifications

• Oil Type: BMW High Performance 5W-30 Diesel Synthetic Oil (BMW part number 07 51 0 037 195)
• Alternative: If BMW oil is unavailable, a fully synthetic, low-ash oil meeting BMW LL-04 specifications (such as Castrol SLX Professional OE SAE 5W-30) may be used as a top-up
• Capacity: Approximately 7.5 quarts (8 liters)
• Filter: OEM Hengst oil filter with cap o-ring and drain plug crush seal

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 and always replacing the filter .

Brake Fluid Service

Brake fluid replacement is a time-based service. BMW recommends replacing brake fluid every 2 years, regardless of mileage . The microfilter (cabin air filter) is also recommended for replacement every 2 years, based on the vehicle's production date .

Diesel Exhaust Fluid (DEF)

The 2010 335d's Selective Catalyst Reduction (SCR) system requires Diesel Exhaust Fluid (also known as AdBlue) to reduce emissions .

Important:

• BMW recommends topping off the DEF reservoir at every oil change
• Running out of DEF may prevent the engine from starting
• Use only high-quality DEF that meets BMW specifications (Genuine BMW part number 83190441139)

Emission Control System Maintenance

BMW specifies replacement of the oxygen sensor at 120,000 miles to maintain fuel economy and minimize exhaust pollution . This replacement is also required under BMW's emission system warranties .

Transmission Fluid Service

BMW specifies automatic transmission fluid (ATF) replacement at 100,000-mile intervals for the 2010 335d . The transmission service is not shown in the CBS system and requires separate attention.

Cooling System

BMW states that the engine coolant has a long-term rating and does not need to be changed except for system repairs .

Parking Brake

The parking brake should be checked for function and pre-burnished as part of routine maintenance . When rear brakes are serviced, the parking brake condition, lining thickness, and function should be inspected .

General Service Recommendations Summary

The following table summarizes the key service intervals for the 2010 BMW 335d based on OEM documentation:

Frequently Asked Questions

1. How often should I change the oil in my 2010 BMW 335d?

The CBS system determines the interval based on driving conditions. BMW recommends changing oil at least once per year . Independent specialists recommend a conservative 5,000-mile interval for optimal engine health .

2. What oil does the 2010 BMW 335d require?

The M57 diesel engine requires BMW High Performance 5W-30 Diesel Synthetic Oil (BMW part number 07 51 0 037 195) . Low-ash synthetic oil meeting BMW LL-04 specifications is acceptable if BMW oil is unavailable .

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

DEF is a consumable fluid used in the SCR emissions system. BMW recommends topping off the DEF reservoir at every oil change. Running out of DEF may prevent the engine from starting .

4. When should the brake fluid be replaced?

BMW recommends brake fluid replacement every 2 years, regardless of mileage .

5. When should the transmission fluid be changed?

BMW specifies automatic transmission fluid replacement at 100,000-mile intervals for the 2010 335d .

6. When should the oxygen sensor be replaced?

BMW specifies oxygen sensor replacement at 120,000 miles .

7. How does the CBS system work?

The Condition Based Service system uses sensors and algorithms to determine maintenance needs based on actual driving conditions . Service interval warnings are displayed on the instrument cluster .

8. Is the 2010 BMW 335d covered by a maintenance program?

Yes, the 2010 335d includes BMW Maintenance Program coverage for 48 months or 50,000 miles, covering factory-recommended maintenance as determined by the CBS system .

*Always consult your vehicle's owner's manual and CBS system for the most accurate maintenance requirements for your specific 2010 BMW 335d. Maintenance needs may vary by production date and driving conditions.*