2021 Mercedes-Benz Sprinter 1500 Is Leaking Oil

Discover the Common Causes of Oil Leaks in Your 2021 Mercedes-Benz Sprinter 1500 and How to Fix Them

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Reviewed by
Devin Cabugcal
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 2021 Mercedes-Benz Sprinter 1500 is leaking oil are oil system component failure and leaking engine gaskets.
  • Oil System Components: A worn or damaged oil pump or filter can lead to low oil pressure, resulting in 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 2021 Mercedes-Benz Sprinter 1500 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.

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 steps to diagnose an oil leak in a 2021 Mercedes-Benz Sprinter 1500?

When diagnosing an oil leak in a 2021 Mercedes-Benz Sprinter 1500, start by thoroughly inspecting the engine bay and the area beneath the vehicle to locate the source of the leak. Pay close attention to the oil pan, as this is a common area for leaks to occur. Next, check the oil levels in the engine; a significant drop may indicate a leak that needs immediate attention. It's also essential to examine the oil filter and drain plug for any signs of leakage or damage, tightening the drain plug if it feels loose and replacing the oil filter if necessary. Additionally, inspect the gaskets and seals around the engine, as worn or damaged components can lead to oil leaks. If the leak remains elusive, consider adding UV dye to the engine oil, running the engine briefly, and then using a UV light to help identify the leak's location. If these steps do not resolve the issue, consulting a qualified mechanic is advisable for a more detailed inspection and repair recommendations. By following this diagnostic approach, you can effectively address oil leaks and maintain your vehicle's performance.

What are the common causes of oil leaks in a 2021 Mercedes-Benz Sprinter 1500?

When dealing with oil leaks in a 2021 Mercedes-Benz Sprinter 1500, it's crucial to understand the common culprits that may be at play. One frequent issue is a degraded or damaged oil pan gasket, which can wear out over time and lead to significant leaks. Another common source is the valve cover gasket; if this component is worn or damaged, it can result in oil seepage that may not be immediately visible. Additionally, the oil filter housing can develop leaks, often due to improper installation or wear, which can compromise the engine's integrity. Cracked or damaged oil cooler lines are also a potential source of leaks, as they can allow oil to escape under pressure. Lastly, a loose or improperly sealed drain plug can lead to oil loss, so it's essential to ensure that this component is securely fastened. By being aware of these common issues, DIY enthusiasts can take proactive steps to inspect and address oil leaks, ultimately maintaining the performance and longevity of their vehicle. Regular maintenance and thorough inspections are key to catching these problems early and preventing further damage.

How urgent is it to address the oil leak in my 2021 Mercedes-Benz Sprinter 1500?

Addressing an oil leak in your 2021 Mercedes-Benz Sprinter 1500 is not just a matter of routine maintenance; it is a critical issue that demands immediate attention. Ignoring an oil leak can lead to a significant drop in oil levels, which compromises the lubrication of essential engine components. This lack of lubrication can result in increased friction, leading to premature wear and potential engine damage. Furthermore, an oil leak can cause the engine to overheat, a situation that could escalate into costly repairs or even complete engine failure. Beyond mechanical concerns, there are safety implications to consider; leaking oil can drip onto hot engine parts, creating a fire hazard that endangers both the vehicle and its occupants. Therefore, if you notice any signs of an oil leak, it is imperative to act swiftly. By addressing the issue promptly, you can safeguard your vehicle's performance and ensure your safety on the road.

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2021 Mercedes-Benz Sprinter 1500 Oil Leak Causes & Repairs