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Mercedes Knock Sensor Location

Mercedes Knock Sensor Location. On a v engine, they are usually in the v itself, so likely there are a lot of parts that need to come off to get to them, meaning a lot of labour as well as gaskets, seals and fluids. Sensor are mounted to the engine crankcase and secured with a bolt tightened to s specified torque.

MercedesBenz W204 Knock Sensors Replacement (20082014
MercedesBenz W204 Knock Sensors Replacement (20082014 from www.pelicanparts.com

The knock sensor (ks) is usually a two wire sensor. It has one of those big squeezy metal clips to secure it, if you find it hard to pull off just flick the metal clip off and re attach it after. There are a few different possible locations for the knock sensor, but the most common places include the engine block, the cylinder head, or the intake manifold.

The Knock Sensor (Ks) Is Usually A Two Wire Sensor.


Once they confirm that the knock sensor is faulty, they will fit a replacement knock sensor. If you do, can you post the codes? The green arrow points to the right side or bank 1 knock sensor.

Figure 1 This Photo Shows The Location Of Both Knock Sensors.


When the pcm detects a problem with the knock sensor or its circuit, the module will turn on the check engine light and store a corresponding diagnostic trouble code (dtc) in its memory. Keep in mind that your knock sensor needs to hear and feel what’s going on. I attached 2 pictures for you of the location of the sensors.

Problems With The Knock Sensor Will Not Cause Engine Performance Problems.


This tightening torque is important, under or over torqued fasteners could reduce. If knock is detected the sensor will tell the management system of the engine to severely retard the ignition. Both sensors are located on the left side of the motor and are.

The Good News Is That It Won’t Cost You An Arm And A Leg To Replace A Bad Knock Sensor.


If you have a standard economy vehicle, you can expect to pay anywhere from $120 to $500 for replacing your knock sensor. A 5 volt reference is supplied to the sensor and there is a signal return from the knock sensor to the pcm (powertrain control module). The most common sign of a bad knock sensor is an illuminated check engine light.

It Uses A Lambda Probe In The Exhaust To Measure How Much Oxygen Is Present, Feeding This Information Back To The Engine Management System.


When irregular combustion takes place a detectable knock or vibration occurs. Mercedes benz code = 0504 (knock sensor 1, right) has an electrical fault. Beside an error code you will notice a lack of power and throttle response.

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