2013 BMW 535i Is Leaking Oil

Diagnosing Oil Leak Sources in Your 2013 BMW 535i and Recommended Repair Solutions

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Reviewed by
Andrew Hajjar
Written by RepairPal Car Genius
Updated January 14, 2025
0%
80% chance it's the
Oil System Components
0%
20% chance it's the
Engine Gaskets
The most common reasons a 2013 BMW 535i is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A failure in oil system components, such as a worn oil pump or clogged oil filter, can lead to inadequate lubrication and potential engine damage.
  • Engine Gaskets: A worn or damaged engine gasket can lead to oil or coolant leaks, resulting in engine overheating or loss of lubrication.
Proper diagnosis will determine the exact cause of your symptom, saving you money on unnecessary repairs. The diagnostic experts at RepairPal Certified shops have the right tools and experience to solve any symptom.

How much does it cost to fix a 2013 BMW 535i is leaking oil?

Common Repairs

The total repair cost will vary based on the condition of your vehicle and the number of repairs needed to fix your symptom. Proper diagnosis will save you money by finding the exact repairs needed to fix your car right the first time.

Oil pans don't wear out or break like other parts, they generally only need to be replaced because of external damage from an accident or an improperly tightened drain plug. The main symptom you will experience is an oil leak underneath the engine of your car. The oil that leaks from a damaged oil pan will range from dark brown to dark black. If the leak is large enough or occurs for long enough the oil level will be low enough to turn the oil pressure or low oil level warning light on.

An oil leak may be noted on the ground where the vehicle is parked. However, many vehicles have plastic trays underneath the engine that may catch leaking oil and conceal the leak. In such cases, a low oil level, a burning oil smell, or even smoke from oil burning in the engine bay may be noted.

»MORE: Signs of a bad oil pan gasket

A bad oil level sensor may cause a false reading of the engine oil level. The oil level warning light may illuminate even when the oil level (checked manually) is within an acceptable range. The warning light may also come on and off intermittently if the sensor is faulty. An error code may be sent to the PCM and a check engine light may come on the dashboard as well if the sensor is bad.

The engine oil pressure warning light will come on if the engine oil pressure is low, or if the oil pressure sensor is faulty. In either case, engine power may be reduced significantly. The check engine light may also illuminate, and an on-board diagnostic (OBD) trouble code will be stored in the vehicle's computer.

What are the initial diagnostic steps to identify the source of an oil leak in a 2013 BMW 535i?

To effectively identify the source of an oil leak in your 2013 BMW 535i, begin with a comprehensive visual inspection of the engine bay. Look for any visible oil residue, puddles beneath the vehicle, and closely examine the oil pan, gaskets, and seals for signs of wear or damage. If the leak remains elusive, employing a UV dye and light method can be particularly useful; simply add the dye to your engine oil and use the UV light to trace any leaks, as the dye will illuminate under the light. Pay special attention to common leak points known in BMW models, such as the valve cover gasket, as these areas are often culprits. Cleaning the engine beforehand can significantly aid in spotting fresh leaks, making it easier to identify the source. Additionally, keep an eye on your oil levels by regularly checking the dipstick; a rapid decrease in oil levels can indicate a serious leak that requires immediate attention. By following these steps, you can systematically diagnose and address any oil leak issues in your BMW 535i, ensuring your vehicle remains in optimal condition.

What are the common causes of oil leaks in a 2013 BMW 535i?

When dealing with oil leaks in a 2013 BMW 535i, it's essential to understand the common culprits that may be at play. One of the primary causes is a worn valve cover gasket, which can fail over time and allow oil to seep out between the valve cover and the cylinder head. Additionally, as the vehicle ages, various engine gaskets and seals can deteriorate, leading to leaks at critical junctions. The oil filter housing gasket and the oil/coolant housing gasket are particularly prone to failure, contributing to oil loss. Frequent driving on rough terrain can exacerbate these issues, as the vibrations may accelerate the degradation of these components. Lastly, while oil pans are generally durable, they can suffer from external damage due to accidents or improper maintenance, necessitating replacement. By being aware of these common causes, DIY enthusiasts can take proactive steps to inspect and repair their BMW, ensuring optimal performance and longevity.

How urgent is it to address the oil leak in my 2013 BMW 535i?

Addressing the oil leak in your 2013 BMW 535i is an urgent matter that should not be overlooked. Ignoring this issue can lead to a cascade of problems, including diminished engine performance and the risk of overheating, which could ultimately result in catastrophic engine failure. The first step in resolving the leak is to accurately identify its source, as this will guide you in selecting the right repair method. Common culprits include worn gaskets and seals, which are prevalent in BMW models. If left unaddressed, the persistent loss of oil can lead to severe engine damage over time, making it crucial to act swiftly. By tackling the oil leak promptly, you not only safeguard your vehicle's performance but also prevent costly repairs down the line, ensuring your BMW remains in optimal condition.

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