2022 Mercedes-Benz A35 AMG Has A Coolant Leak

Diagnosing Coolant Leak Issues in Your 2022 Mercedes-Benz A35 AMG and Effective Repair Strategies

Find Repair Location
Reviewed by
Devin Cabugcal
Written by RepairPal Car Genius
Updated January 14, 2025
0%
50% chance it's the
Loose Hose Connections
0%
25% chance it's the
Radiator
0%
25% chance it's the
Water Pump
The most common reasons a 2022 Mercedes-Benz A35 AMG has a coolant leak are loose hose connections, a broken radiator, or a failed water pump.
  • Loose Hose Connections: A loose hose connection can lead to vacuum leaks or fluid loss, resulting in poor engine performance or overheating.
  • Radiator: A damaged or clogged radiator can impede coolant flow, resulting in engine overheating and reduced cooling efficiency.
  • Water Pump: A failing water pump can lead to coolant leaks or overheating due to inadequate circulation of coolant in the engine.
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.

What are the initial diagnostic steps to identify the source of a coolant leak in a 2022 Mercedes-Benz A35 AMG?

When tackling a coolant leak in a 2022 Mercedes-Benz A35 AMG, start with a thorough visual inspection of the vehicle. Look for any visible signs of coolant pooling under the car or around critical components such as the radiator, hoses, and water pump. If the leak isn't immediately apparent, consider performing a pressure test on the cooling system. This involves using a pressure tester to pressurize the system, which can help reveal hidden leaks by forcing coolant out of any cracks or weak points. Additionally, inspect the coolant reservoir for any signs of damage, such as cracks that could lead to coolant loss. Pay close attention to the radiator and hoses, checking for corrosion, wear, or loose connections that might contribute to the leak. Lastly, be alert for any unusual signs like white smoke from the exhaust or a sweet smell inside the cabin, as these could indicate coolant entering the engine. By systematically following these diagnostic steps, you can effectively identify the source of the coolant leak and take appropriate action to resolve the issue.

What are the common causes of a coolant leak in a 2022 Mercedes-Benz A35 AMG?

When dealing with coolant leaks in a 2022 Mercedes-Benz A35 AMG, it's essential to understand the common problems that can arise within the cooling system. One of the primary culprits is damaged hoses, which can develop cracks or degrade over time, leading to leaks. Additionally, a faulty radiator, often characterized by corrosion or physical damage, can significantly contribute to coolant loss. The water pump, responsible for circulating coolant, may also wear out or become damaged, resulting in leaks that can compromise engine performance. Another potential issue is a loose or damaged radiator cap, which can allow coolant to escape from the system. In more severe cases, a cracked engine block can lead to significant coolant leaks, while the coolant reservoir itself may develop cracks over time. Addressing these issues promptly is crucial to prevent overheating and potential engine damage, making regular maintenance and inspections vital for the longevity of your vehicle.

How urgent is it to address a coolant leak in a 2022 Mercedes-Benz A35 AMG?

Addressing a coolant leak in a 2022 Mercedes-Benz A35 AMG is of utmost urgency due to the significant risks associated with engine overheating. Coolant plays a vital role in maintaining optimal engine temperature; a leak can lead to insufficient coolant levels, resulting in the engine running hotter than normal. This overheating can cause severe damage, including warped cylinder heads or even complete engine failure, which can be costly to repair. Additionally, neglecting a coolant leak can adversely affect the vehicle's performance, leading to decreased fuel efficiency and an overall decline in driving experience. By addressing the leak promptly, you not only safeguard your engine's health but also prevent more extensive and expensive repairs in the future. Therefore, if you notice any signs of a coolant leak, such as puddles under the vehicle or a drop in coolant levels, it is crucial to take immediate action to ensure the longevity and reliability of your A35 AMG.

You’ve got options with RepairPal

Whether you need a more accurate auto repair estimate or help finding a reputable shop in your area, we’ve got you covered.

2022 Mercedes-Benz A35 AMG Coolant Leak Causes & Repairs