Experiencing a P0335 error code with your Mercedes-Benz can be frustrating. This code typically indicates an issue with the Crankshaft Position Sensor (CPS), a critical component for your engine’s operation. This guide details a DIY experience replacing this sensor, offering insights into the process and potential challenges.
The journey began on a weekend, finally free from bad weather, presenting the perfect opportunity for some car maintenance. The task at hand: replacing the suspected faulty crankshaft sensor. Initial steps involved removing the engine cover, a seemingly simple task that unfortunately led to a minor mishap – dislodging the dipstick cover. This small red plastic part decided to explore the depths of the engine bay, leading to a brief moment of panic before it was thankfully recovered from the ground.
With the engine cover out of the way, the next step was locating and removing the old sensor. Upon extraction, a slight discrepancy was noted: the original Bosch sensor, marked with Mercedes-Benz branding, carried a part number of 0 261 210 171. The replacement part, while also a Bosch unit, was number 0 261 210 170. Despite the slight difference, cross-referencing confirmed the new sensor as the correct replacement for a Mercedes experiencing P0335. The exact nuances of this part number variation remain unclear, but the key specifications were deemed compatible.
Installing the new crankshaft position sensor presented its own set of challenges. The tight space made applying sufficient pressure difficult, raising concerns about potentially getting the sensor stuck. To mitigate this, a bit of light sanding and a touch of 3-in-1 oil were applied to the sensor body. This minor preparation proved effective, allowing the new sensor to slide into place without excessive force.
Alt text: Mercedes-Benz engine bay highlighting the typical location of the crankshaft position sensor, relevant to P0335 error diagnostics and repair.
Following the sensor replacement, the car, which had been stationary for an extended period, presented another hurdle – a completely flat battery. Currently, the battery is on charge, but its overall health is questionable, potentially necessitating a replacement soon. The hope is that with the new crankshaft position sensor and a charged battery, the Mercedes will start and the P0335 error will be resolved. This DIY repair, while slightly fiddly at times, demonstrates a practical approach to tackling common Mercedes issues.
