2017 Mercedes-Benz GLA45 AMG Is Leaking Oil

Address Oil Leaks in Your 2017 Mercedes-Benz GLA45 AMG Effectively

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Reviewed by
Aisha
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 2017 Mercedes-Benz GLA45 AMG 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 2017 Mercedes-Benz GLA45 AMG 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 potential causes of an oil leak in a 2017 Mercedes-Benz GLA45 AMG, and how should I diagnose it?

When diagnosing an oil leak in your 2017 Mercedes-Benz GLA45 AMG, it's essential to adopt a systematic approach that prioritizes simpler solutions first. Begin with a thorough visual inspection of the vehicle, looking for any obvious signs of oil pooling or streaks around the engine and undercarriage. Next, check the oil levels regularly; a significant drop can indicate a leak. Focus on inspecting the gaskets and seals, as these components are often the culprits behind oil leaks due to wear over time. Ensure that the oil drain plug is securely tightened, as a loose plug can lead to oil seepage. Additionally, examine the oil filter for any signs of damage or leaks, as a faulty filter can also contribute to the problem. Don’t overlook the oil pan; inspect it for cracks or other damage that could be causing leaks. Lastly, check the oil cooler lines and the valve cover gasket for any signs of wear or leaks. By following this methodical diagnostic approach, you can effectively identify the source of the oil leak and take the necessary steps to resolve the issue, ensuring your vehicle remains in optimal condition.

What are the common causes of oil leaks in a 2017 Mercedes-Benz GLA45 AMG?

When dealing with oil leaks in a 2017 Mercedes-Benz GLA45 AMG, it's crucial to understand the common culprits that may be at play. One frequent issue is the degradation of the oil pan gasket, which can wear out over time and lead to leaks. Similarly, the valve cover gasket, which seals the valve cover to the cylinder head, can also become worn or damaged, resulting in oil escaping. Another area to inspect is the oil filter housing gasket; if this component fails, it can cause oil to leak from the housing. Additionally, the oil cooler seals are vital for maintaining proper oil temperature, and if they deteriorate, leaks can occur. Lastly, the rear main seal, located at the back of the engine, is responsible for sealing the crankshaft, and a failure here can lead to significant oil loss. Addressing these issues promptly is essential to prevent further engine damage, and regular maintenance checks can help catch these problems early, ensuring your vehicle runs smoothly.

How urgent is it to address the oil leak in my 2017 Mercedes-Benz GLA45 AMG?

When dealing with an oil leak in your 2017 Mercedes-Benz GLA45 AMG, the urgency of the situation cannot be overstated. An oil leak not only compromises the lubrication essential for your engine's smooth operation but also increases the risk of overheating, which can lead to catastrophic engine damage. For DIY enthusiasts, it’s crucial to recognize that neglecting this issue can escalate into more severe problems, such as engine failure, which often results in costly repairs that could have been avoided with timely intervention. Additionally, oil leaks create hazardous driving conditions, as spilled oil can make roads slippery, posing a significant safety risk to you and other drivers. By addressing the leak promptly, you not only safeguard your vehicle's performance but also enhance its resale value; potential buyers are likely to be wary of unresolved maintenance issues. Therefore, if you notice any signs of an oil leak, it is imperative to take immediate action, whether that involves a DIY repair or consulting a professional, to ensure the longevity and safety of your vehicle.

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