Mercedes-Benz C E W202 W203 W210 W211 Crankshaft Position Sensor A0031532728

Mercedes-Benz C E W202 W203 W210 W211 Crankshaft Position Sensor is a precision powertrain component responsible for accurately determining the position and rotational speed of the crankshaft in Mercedes engines. This component from the Crankshafts group supports stable engine operation, facilitates starting, and improves engine performance. The used original part is a sensible choice for drivers looking for a technically compatible solution at an attractive price.

Specifications and technical data

• SKU: A0031532728
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0031532728
• Substitutable numbers: A0031532728, A 003 153 27 28, BG
• Category: Crankshafts

Function and role of the crankshaft position sensor

The crankshaft position sensor in Mercedes W202, W203, and W210 models transmits information about the current position and rotational speed of the crankshaft to the engine control unit. Based on this, the control system determines the fuel injection and ignition timing, which affects:

• proper cold and warm engine starting,
• stable idle speed,
• smooth acceleration without jerking,
• efficient use of engine power.

A functional sensor in the Crankshafts system reduces the risk of the engine stalling suddenly and problems with restarting the vehicle.

Compatibility with Mercedes W202, W203, W210

The presented sensor has been designed for selected versions of the Mercedes C-Class W202 and W203 generations and the E-Class W210 generation. This means it is matched in terms of:

• mounting geometry in the crankshaft area,
• the electrical connector used,
• signal parameters compatible with the factory engine control unit.

As a result, installation is similar to replacing a factory part, without the need for wiring modifications or additional adapters.

Characteristics of the used component

The offered sensor is a used part, which allows for lower repair costs while maintaining the original design and fit for the Mercedes powertrain. This type of component is particularly interesting for:

• repairs of older vehicles where service economy is important,
• diagnosing faults related to the lack of a signal from the crankshaft sensor,
• temporary replacement to confirm the source of the problem in the engine control system.

Choosing an original, used sensor allows you to maintain compliance with the manufacturer's factory specifications and avoid problems typical of random aftermarket replacements.

Importance of proper selection in the powertrain

A correctly selected crankshaft position sensor has a direct impact on driving safety and comfort. An incorrect signal from this component can cause:

• difficult starting or a complete inability to start the engine,
• uneven engine operation,
• warning lights illuminating and the vehicle entering limp mode.

Therefore, when replacing, it is worth choosing a component dedicated to specific Mercedes models, which increases the chance of a quick and effective fault elimination.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as position sensors, measuring elements, or components working with the ignition system, check the available parts in the Mercedes Crankshafts category.

Technical support and knowledge about the powertrain

When diagnosing problems with starting or uneven engine operation, it is worth relying on reliable knowledge about the entire powertrain system. Additional information about the cooperation of elements such as the clutch, dual-mass flywheel, and other components can be found in the article Clutch and dual-mass flywheel – diagnostics and selection of parts for the powertrain, which helps to better understand the dependencies in modern powertrain systems.