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Reasons Behind Crankshaft Position Sensor Failure in a Mercedes

Reasons Behind Crankshaft Position Sensor Failure in a Mercedes

The crankshaft position sensor is an important measurement tool that is essential in all modern combustion engines, including your Mercedes. It is needed to monitor the speed of rotation and the position of the crankshaft. It sends the information it collects to the Electronic Control Unit (ECU) which is the main computer onboard your Mercedes.

The data given by the crankshaft position sensor allows the ECU to make alterations as needed to ensure your Mercedes achieves high-level performance. This means that accurate information regarding the crankshaft position and speed is essential for maintaining good engine management and timing. Ultimately, when the crankshaft position sensor fails, the engine is unable to run correctly if at all.

The crankshaft position sensor rarely fails without warning. There are usually some signs and symptoms that occur which can make you suspicious. Let’s learn more about this important sensor, why it fails, and how you can tell if failure has occurred.

How the Crankshaft Position Sensor Works

Located next to the flywheel ring gear, the crankshaft sensor can come in 2 different variants. Your Mercedes will either use an inductive sensor or a hall generator. These two forms work by altering magnetic fields using the ring gears rotational movement. The magnetic field which is created is used to form a range of voltage signals which are then picked up and used by the ECU.

Reasons Behind Crankshaft Position Sensor Failure

As the crankshaft position sensor is an electronic component, the reasons why it fails largely follows the same reasons as the other electronic systems of your Mercedes:

  • short circuits
  • faulty wiring
  • wiring short circuits
  • damaged or cut wiring
  • damaged encoder wheel
  • metal abrasion causing soiling and contamination

How to Tell if your Mercedes has a Faulty Crankshaft Position Sensor

There are 3 key signs which can indicate imminent failure of the crankshaft position sensor. Remember, without a working sensor, your Mercedes is unlikely to go anywhere at all, so watch for the early warning signs below.

Starting Troubles

As the crankshaft position sensor helps regulate the timing of your Mercedes’ engine, when it starts to fail, you will likely notice starting your car successfully first time around starts to become a rarity. Without the data provided by the crankshaft position sensor, your ECU is left guessing. This can create a chain reaction that has all your engine systems running out of sync with one another, which will cause a false start. As the problem progresses, your vehicle may reach a point where it is simply unable to start.

Intermittent Stalling

If your Mercedes stalls intermittently, then the crankshaft position sensor may be on the fritz. This is commonly caused by issues with the sensor’s external wiring and not with the sensor module itself. When the wiring is damaged, the connection between the sensor and the ECU becomes spotty, despite the sensor working perfectly. This will result in your Mercedes performing normally and then suddenly and intermittently stalling when the connection between the two parts is lost. This issue should be resolved as soon as possible because any rogue element that makes your vehicle unpredictable is an accident waiting to happen.

Engine Management Light

The check engine light, otherwise known as the Engine Management Light or EML, can be triggered by the ECU whenever an issue with the engine is detected. This can range from low-level issues such as a loose gas cap to more severe problems, such as catalytic converter failure. As a failing crankshaft position sensor throws the engine’s timing into dysregulation, it can cause the ECU to trigger the engine management light. This will then send out a relevant error code which can be diagnosed by a professional mechanic. This light is meant to safeguard the health of your engine and should never be ignored.

Turning Wrenches

At Turning Wrenches of Louisville, KY, we are Mercedes Crankshaft Check passionate about auto repairs and servicing. We have a hardworking team of mechanics who will work diligently to fix the problem with your Mercedes, be it the crankshaft position sensor failure, or other unrelated problems. So, for trustworthy repairs and great customer service, look no further than Turning Wrenches. Our dedicated customer service team is ready and waiting to take your call.

Tips From Certified Mechanics in Louisville on Maintaining Your Mercedes’ AirMatic System

Tips From Certified Mechanics in Louisville on Maintaining Your Mercedes’ AirMatic System

Mercedes Benz is known for its high-performance engine, next-generation innovations, and a sophisticated interior. One system that is well-known for contributing to the incredible driving experience that Mercedes Benz offers is the AirMatic system. Let’s dive deeper into this integral system and look at ways to ensure each drive is the ultimate driving experience.

The Value of the AirMatic System

The AirMatic system is an air suspension marvel developed by Mercedes for their new models. The AirMatic system works in unison with the Air Dampening System (ADS) to create an unbelievably-smooth driving experience. The ADS provides the suspension with a cushion, while the AirMatic system controls air inside the suspension to match the terrain and driving conditions.

Why It’s Important to Keep your AirMatic System Well-Maintained

When you’re driving your dream car, it is essential that you keep on top of maintenance. Maintenance helps extend the lifespan of your Mercedes and ensures that each drive feels as good as the last. Without proper maintenance, parts will start to wear and then fail. You will notice a dramatic drop in performance and may become frustrated with potentially-dangerous symptoms caused by failing parts. When it comes to caring for your AirMatic system, we’ve listed some of the top maintenance tips below.

Check for Leaks

To keep an air-based suspension system working at top levels, you always need to be on the lookout for air leaks. Air leaks can put a strain on essential parts of the suspension system, such as the compressor. This can lead to premature part failure. There are kits available for purchase that can help you patch a minor leak at home, but for complete peace of mind, you should bring your Mercedes to a specialist for repairs.

Loose Air Lines

As part of your regular, ongoing maintenance, you should check the air lines or the AirMatic System. You should be inspecting these to see that the lines have a secure connection to other parts of the system. This will ensure the correct pressure is able to be maintained within the system. This will reduce the pressure on other parts to over-perform to compensate.

Check the Air Springs

The final crucial part of your ongoing AirMatic maintenance should be to check the air springs. The air springs are designed to expand and contract at a steady pressure, which helps to keep the driving experience smooth. These springs should ideally be kept at a pressure of 5psi, but check with your owner’s manual to make sure your springs are tuned to the specifics of your Mercedes model.

Cleaning and Maintaining the AirMatic System

As with most parts of your vehicle, proper maintenance involves ensuring that parts are clean of dirt and grime which can interfere with the correct operation of the system. Debris build up can be a leading and yet preventable cause of many types of part failure. Buildup can have you shelling out money for repairs that could have been avoided. So if you want to save money, spend a little time giving your Mercedes some proper TLC.

Spending some time checking and cleaning your car will also allow you to spot small changes or early stages of part failure, meaning you can respond much more quickly to any issue your Mercedes might face. Any repairs will remain straightforward, quick, and affordable.

Regularly Scheduled Maintenance

The number one way to ensure your Mercedes Benz remains operating at peak performance is to keep up with your servicing record. Having your Mercedes Mercedes AirMatic System Check inspected by a professional repair shop will ensure that any issue is caught early on. Parts can be inspected, tested, and fine tuned, meaning your Mercedes will always be at its best.

Turning Wrenches of Louisville, KY is on hand to help local Mercedes drivers keep their AirMatic systems in check. Alongside this, the dedicated team will also help you care for your car’s A/C, wheel alignment, exhaust system, transmission, and more. We are your one-stop shop for superior servicing and repairs, and with a 3-year/36,000-mile warranty, we guarantee you will be satisfied with our service and quality. Call us today to make an appointment or stop in to talk with our technicians.

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Dear Valued Customers,

After conferring with State and local officials and based on the relatively small number of personal interactions involved in our daily operation we have decided to continue to function and will be open regular hours. We have taken aggressive measures to sanitize surfaces that are prone to human touch and will do so on a continuing basis. In addition we will make certain that as we interface with you at the counter, handle your keys, answer questions and clean your car and take payment we will maintain proper distance and sanitize the touch points in your car. We are committed to your safety and well being and will comply with any restrictions imposed by authorities.

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