Mercedes W169 W245 OM640 Fuel Filter Temperature Sensor A0001593304

Mercedes W169 W245 OM640 Fuel Filter Temperature Sensor is a precision fuel system component responsible for monitoring fuel temperature in OM640 diesel engines. As a properly selected sensor from the Air and fuel intake sensors category, it supports stable engine operation, correct fuel metering, and smooth engine performance. This solution is dedicated to users who expect proven, original electronics for their Mercedes A-Class W169 or B-Class W245.

Specifications and technical data

• SKU: A0001593304
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0001593304
• Substitutable numbers: A0001593304, A 000 159 33 04, EM
• Location on the vehicle: Front
• Category: Air Intake & Fuel Sensors

Function and role of the fuel temperature sensor

The fuel temperature sensor in the OM640 engine transmits information about the current temperature of the medium in the fuel system to the engine control unit. Based on this data, the ECU corrects the injection dose and timing, which affects:

• stability of operation at idle and under load,
• proper cold starts in various thermal conditions,
• control of exhaust emissions and fuel consumption,
• protection of fuel injection system components against adverse operating conditions.

A properly functioning sensor from this group of components helps reduce the risk of jerking, power loss, or incorrect fuel dose corrections that may occur due to erroneous temperature readings.

Purpose and location on the vehicle

The presented fuel temperature sensor for Mercedes W169/W245 with OM640 engine is intended for installation in the front part of the vehicle, within the engine fuel system area. Its location in the front zone facilitates service access and diagnostics, while ensuring proper integration with the factory electrical harness and fuel lines.

Before purchasing, it is recommended to verify compatibility using the OEM number or VIN to ensure that the sensor will work with the specific version of the engine controller and equipment configuration of your Mercedes.

Benefits of using an original Mercedes sensor

Choosing an original solution from the Air and fuel intake sensors category for Mercedes vehicles ensures:

• factory fitment to the electrical installation and fuel system,
• appropriate measurement characteristics adapted to the OM640 engine injection maps,
• consistency with the engine controller software,
• maintenance of operating parameters close to factory specifications after replacing a damaged component.

For users considering the installation of a used component, it is important that the original Mercedes sensor maintains compatibility with factory harnesses, connectors, and mounting brackets, which limits the need for modifications and shortens service time.

Condition, diagnostics, and selection of a used sensor

The offered component comes from dismantling and is intended for those looking for an economical yet technically sound solution for repairing the fuel system. Before installation, standard system diagnostics are recommended – checking the harness, connectors, and any error codes stored in the engine controller.

To better understand how to safely select and install used modules and sensors in modern cars, it is worth reading the guide describing selection by VIN/OEM, hardware and software compatibility issues, and practical application examples: Used automotive electronics on board – why choose second-hand ECU modules and sensors?.

Support for fuel system expansion in Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as additional temperature sensors, pressure sensors, or measurement elements in the fuel path, check the available parts in the Mercedes air and fuel intake sensors category.

For drivers wondering whether a remanufactured part or a used original one is a better choice, the following material comparing both service approaches may be helpful: Remanufactured or used original – which part to choose for repairs?.