For Mercedes-Benz enthusiasts and DIY mechanics working on the CLK 350 model, understanding the location of the fuel filter is crucial for maintenance and repair. Specifically for the Mercedes Clk 350 equipped with the M272 engine, the fuel filter is not located externally as in some older models. Instead, it’s integrated within the fuel tank itself.
This internal location might seem less accessible at first, but replacing the fuel filter in a Mercedes CLK 350 is a manageable task for those with some DIY experience. Unlike external filters that often require lifting the vehicle and removing wheels for access, the internal filter in your CLK 350 is accessed from inside the car.
To reach it, you’ll need to remove the rear seat bottom and access panels. This will expose the fuel pump and sender units. A key step involves detaching the retainer rings that secure these units to the fuel tank. It’s important to note that Mercedes CLK 350 vehicles can come with different retainer ring types depending on whether they are configured for California Emissions or not.
For Mercedes CLK 350 models without California Emissions, the retainer ring is typically a screw-type which can be unscrewed, often with the aid of a specialized tool, although pliers can sometimes be carefully employed. However, Mercedes CLK 350 vehicles designed to meet California Emissions standards utilize a different system. These models use a large “hose clamp” style retainer instead of the screw ring. This clamp requires a small right-angle tool, like a SkewDriver, to loosen the screw and release the clamp.
Working with the fuel system always demands caution. Gasoline, while not explosive in liquid form, produces fumes that are highly flammable and can explode when ignited. Therefore, safety should be your top priority when undertaking fuel filter replacement on your Mercedes CLK 350. Always perform this task outdoors in a well-ventilated area, away from any sources of flames or sparks. Crucially, disconnect the vehicle battery before starting any work on the fuel system of your Mercedes CLK 350. By taking these precautions and understanding the specific retainer type in your Mercedes CLK 350, you can confidently approach the fuel filter replacement process.
