Mercedes Benz Crank Position Sensor Replacement A0021539028 850 Ohm

Part number A0021533328 is recognized across multiple brands and supplier lines. The following cross-reference numbers are commonly associated with this sensor:

Note: Cross-reference numbers are provided for reference purposes only. Always verify compatibility with your specific vehicle before purchase.

Part number A0021533328 is compatible with a range of premium European vehicles, primarily from the manufacturer's E-Class, S-Class, SL-Class, V-Class, Sprinter, and Vito model lines. The sensor is used in various gasoline engine configurations, including 2.6L, 2.8L, 3.0L, and 3.2L displacements.

• M104.980 – 3.0L L6 (300CE, 1990–1992)

• M104.981 – 3.0L L6 (300SL, 1990–1992)

• M104.991 – 3.2L L6 (SL320, 1994)

• M104.994 – 3.2L L6 (S320, 1994)

• 2.6L

• 2.8L

• 3.0L

• 3.2L

Note: Compatibility may vary by specific vehicle configuration, production date, and regional specifications. Always verify fitment for your particular vehicle before purchase.

A failing or malfunctioning crankshaft position sensor can produce a range of noticeable symptoms. Early recognition of these warning signs can prevent more serious engine damage and costly repairs.

The most critical symptom of a failing crankshaft position sensor is the engine's inability to start. The crankshaft position sensor provides the ECU with the information that the engine is showing positive RPM and is ready to start. If the ECU does not receive a signal from the sensor, or the sensor is outputting values that it is not anticipating, the engine will crank but fail to start.

A failing crankshaft position sensor can cause the engine to stall unexpectedly while driving or at idle. The stalling can occur suddenly and without warning, often with the tachometer dropping to zero during the event. In some cases, the engine may restart immediately, while in others it may require a cooling-off period.

When the crankshaft position sensor provides an erratic or incorrect signal, the engine may exhibit:

• Rough or uneven idle

• Engine misfires

• Poor or erratic acceleration

• Inconsistent power delivery

A malfunctioning crankshaft position sensor will typically trigger the Check Engine Light. Common diagnostic trouble codes associated with this sensor include:

• P0335 – Crankshaft Position Sensor "A" Circuit Malfunction

• P0336 – Crankshaft Position Sensor "A" Circuit Range/Performance

• P0339 – Crankshaft Position Sensor "A" Circuit Intermittent

If the crankshaft position sensor is faulty, the tachometer may not function correctly. Even when the engine is running normally, the engine speed may display as zero due to the absence of the crankshaft position sensor signal.

Common causes of crankshaft position sensor failure include:

• Mechanical damage – Physical impact or wear

• Damage to the Encoder Wheel – The trigger wheel or signal plate may be damaged

• Damage to Internal Circuits – Electrical failure within the sensor

• Interruption in connections to the ECU – Wiring issues or loose connections

• Corrosion – Moisture ingress causing terminal corrosion

When purchasing a replacement crankshaft position sensor (Part No. A0021533328), consider the following factors to ensure you select the right product for your needs:

Always confirm that the part number on the replacement sensor matches your vehicle's requirements. Part number A0021533328 may also be referenced as 0021533328, A 002 153 33 28, or A002 153 33 28. Related part numbers in this family include 0021539028, 0021535628, and 0021539228. Verify that the sensor you are purchasing carries the correct OE number for your specific vehicle application.

This sensor is vehicle-specific and must be compatible with your engine system. Cross-reference the sensor with your vehicle's:

• Make and model – E-Class (W124), S-Class (W140), SL-Class (R129), V-Class (638/2), Sprinter, Vito

• Model year – 1990–1996 (application-dependent)

• Engine code – M104.980, M104.981, M104.991, M104.994

• Engine displacement – 2.6L, 2.8L, 3.0L, or 3.2L

• Production date

Verify that the replacement sensor matches the required specifications:

• Sensor Type: Inductive Sensor

• Resistance: 850 Ohm

• Fitting Depth: 40 mm

• Cable Length: 1250–1350 mm (confirm for your specific application)

• Connector Shape: Round

• Number of Pins: 1-pin or 2-pin (verify for your specific application)

The crankshaft position sensor is a critical engine management component. Choose a sensor that meets or exceeds OEM specifications for:

• Signal accuracy – Proper pulse generation and amplitude

• Durability – Resistance to heat, vibration, and contamination

• Precision engineering – Exact fit and function matching original specifications

Sensors from reputable brands like Hella, Lucas, and Fuel Parts are subject to rigorous appraisal to ensure they are of OE quality and fit. The original equipment sensor is manufactured in Germany.

Before replacing the sensor, thoroughly inspect the sensor connector for looseness, poor connections, bending, corrosion, contamination, or damage. This sensor features a round plug connector with either 1 or 2 pins depending on the application, and includes a sealing ring. In some cases, the issue may be related to the wiring or connector rather than the sensor itself. Check the crankshaft sensor electrical circuits and inspect for damage. If a fault is identified in the sensor circuit, repair the wiring before replacing the sensor.

The crankshaft position sensor is typically located on the flywheel side of the engine. Access may require working from underneath the vehicle or removing components for clearance. Consider whether you have the tools and expertise for DIY installation or if professional installation is recommended.

Verify the warranty terms offered with the sensor. Most OEM-grade sensors come with a minimum 12-month warranty, with some manufacturers offering up to 3 years. A longer warranty period often indicates greater confidence in product quality.

When ordering online, confirm shipping terms and delivery timelines. Ensure the seller uses reputable shipping carriers to protect the sensor during transit. The sensor weighs approximately 0.088–0.12 kg and features a cable length of 1250–1350 mm