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The occurrence of interference from loud static is preventing the automobile from starting.


MotoGravity

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In the afternoon, I just acquired a Mercedes C63 w204 vehicle around one week ago. Today, while driving to the local stores, I noticed the presence of a static sound emanating from the vehicle's speakers. Over time, the volume of the static noise increased and then transformed into irregular and unpredictable auditory disturbances, reminiscent to the interference experienced when placing a mobile phone in close proximity to a speaker during a phone conversation.

While I was stationary in traffic, I attempted to turn off the engine. However, I had difficulty in properly disengaging the engine and removing the key. Subsequently, I encountered more complications in restarting the engine.
I activated the danger lights, shifted the vehicle into neutral, and proceeded to guide it off the roadway.
Through a series of actions, I successfully extracted the key from the ignition and proceeded to restart the vehicle. With haste, I executed a swift turnaround and embarked on a journey homeward, covering a distance of 15 minutes. During my commute back home, I encountered a recurring problem with noise emanating from the vehicle's speakers. This issue persisted even after I completely powered down the car and removed the ignition key.

I am quite disappointed since I have only had the automobile for a duration of one week, during which time all aspects seemed to be progressing well.

Upon installation of the diagnostic reading device, no error codes were detected.

I am now situated inside my vehicle, which remains stationary, and I have observed that the speakers emit intermittent random static noise around every 10 minutes.

Has anybody had this problem previously?

One possible explanation for the observed problem might be a wiring issue, such as a loose connection or similar malfunction.

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Inspect the connections between the engine block and the chassis. The precise location of the aforementioned topic on a C63 remains unknown; nonetheless, it is evident that they are consistently exposed to frequent bending and perhaps the application of liquid particles. In various online discussion forums, it has been observed that the wiring insulation may deteriorate, leading to fraying, and thus, the connection itself may exhibit increased resistance at one or both ends.

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Thank you for your response.

I am uncertain about the first steps for inspecting block and chassis connections. However, based on my speculation, it is plausible that these connections are located below the vehicle.

The battery was detached for a duration of 5 minutes, during which the audio and radio fuses were removed. Subsequently, a journey of 60 miles was undertaken without encountering any issues. Upon returning, the fuses were restored, although with a little expectation that the problem would resurface. However, no such issue manifested. Automobiles functioning well as intended.

There is a possibility that there exists a loose connection or a similar issue, but, I lack the knowledge or means to conduct a comprehensive investigation into its location or nature.

The user expresses gratitude for the assistance provided.

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The V8 engine, known for its substantial size, exhibits notable differences when compared to my smaller four-cylinder diesel engine. However, it is worth noting that both engines have a similar location in the neighborhood of the bellhousing or back section of the engine. The chassis, serving as the battery negative, is electrically linked to the engine and other components, enduring a rather challenging existence. The engine's movement results in continuous flexing of the connections. When a little increase in resistance occurs, the current from the starting motor flowing through the connections may generate localized heating. This heating can subsequently lead to corrosion, oxidation, and diminished contact, so exacerbating the issue.

While it is possible that information may not be relevant, if the location is identified, it may be easily verified.

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It is advisable to get the alternator inspected. If I recall correctly, establishments such to Halfords or Kwik Fit may frequently provide this service free of charge with the intention of identifying a defective component and afterwards selling you a replacement.

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After reinstalling both fuses, I proceeded to deactivate and reactivate the engine, only to find that the issue resurfaced. Furthermore, simply the act of opening a door with the key removed from the ignition triggers a static noise emanating from the speakers. By removing fuse 26 located in the engine compartment, I am able to cease the interference, so allowing me to operate the vehicle without any disruptions, but without the functionality of the audio system.

I appreciate the guidance provided. I may need to visit Halfords or Kwik Fit in order to get assistance.

The user expresses gratitude for the assistance provided.

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Indeed, I did not. Upon attempting to start the vehicle by turning the key, no response was seen. Subsequently, an endeavor was made to remove the key, but encountered an obstruction. Consequently, the decision was made to shift the gear into Neutral, allowing for the vehicle to be manually propelled towards the curb. Following this, the gear was shifted back into Park, resulting in the successful initiation of the vehicle. During this sequence of events, the individual experienced a state of agitation, accompanied with pessimistic thoughts. The subsequent resolution of the issue provided a little sense of relief.

Thank you for your response.

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It seems that the issue may be related to the fuse of the head unit. It is noteworthy that a malfunctioning head unit might result in a multitude of issues. It is possible that the automobile may have aftermarket components connected to the same fuse, leading to potential confusion over the Controller Area Network (CAN) or the ability of the car to accommodate such modifications.

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Is it possible that this is a manifestation of the well-known and well recognized issue with the alarm transmitter often referred to as the 'classic' duff fault?

I often express my sentiment on this platform.

A very troubled member of the MBUK forum ...There is a conrod protruding from the lateral surface of the engine block. What course of action should I pursue? I kindly request your assistance.

Petrol, also known as gasoline, is a fossil fuel derived from crude oil. It Pete, a male individual, ... Have you attempted to disconnect the alarm transmitter?

However, it is well recognized as a vulnerable area in electrical systems and may be easily mitigated during the process of troubleshooting electrical faults. In my perspective, it is advisable to do a thorough evaluation before to making significant financial investments.

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The incident pertains to the command radio system. To further clarification, there were no complications encountered while initiating the car's ignition. Essentially, I deactivated the engine while the Drive mode was still engaged, and afterwards attempted to reactivate it without disengaging the aforementioned mode. This explains the failure to start the vehicle.

The fuse labeled as 26 has been removed from its position, and so far, no issues have been seen, save for the inability to listen to any audio from an Audi device.

What course of action do you recommend I pursue next? I am interested in seeking professional assistance at an automotive repair facility, however I anticipate that the associated costs may be substantial. Additionally, I lack the necessary knowledge and expertise to do the repairs alone, further complicating the situation.

I want to attempt the reinsertion of the fuse while the engine is in operation, in order to assess any potential alterations in the system's functionality.

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When fuse 26 is inserted and the engine is not running, and there are no illuminated indicators on the dashboard, the act of opening the door results in the illumination of the dashboard. Subsequently, the speakers emit a brief static popping sound, followed by another popping sound after a duration of 10 seconds. This phenomenon occurs when the door is opened without inserting a key, resulting in the illumination of the dashboard.

I will examine the alarm transmitter to see if it is perhaps a fuse.

Thank you for your response.

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I successfully obtained a video at the present moment.

The car was initiated without fuse 26 and driven for a duration of 10 minutes. During a brief stop, the car remained running and fuse 26 was subsequently reinserted. Upon immediate engagement of music playback, it became apparent that the rear speakers located in the parcel shelf emitted a somewhat diminutive sound. Although not significant enough to warrant discontinuation of music, a discernible level of static was audible.

After completing another 10-minute drive, I proceed to reduce the volume of the music and then turn off the engine. Following the removal of the key, the dashboard light ceases to illuminate after about 15 seconds. then, I perceive the presence of static noise.

In the movie, the act of opening and closing a door is shown, without the use of a key. Subsequently, a dash light illuminates, accompanied by the auditory presence of static. This static is first characterized by a brief, abrupt sound, followed by a prolonged interference that emerges around 15 seconds prior to the film's conclusion.

I have written a comprehensive response, but I am unable to provide a video attachment due to limitations with my mobile device. I will publish this and make an effort on my laptop.

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There is no presence of a fuse.

Even in the absence of vehicle batteries, the alarm transmitter will continue to emit sound due to the presence of its internal batteries. This issue arises when the voltage is improperly redirected, resulting in the introduction of this voltage back into the vehicle, hence giving rise to a multitude of peculiar and less desirable malfunctions.

It seems improbable that this is the root cause (although I am hopeful as it presents a straightforward solution), and the act of disconnecting it is a simple and obvious step to exclude it from the process of troubleshooting, in my personal perspective.

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In right-hand drive (RHD) vehicles, the location of the component in question is often situated behind the front wheel arch liner on the passenger side. The access to the object may be achieved without the need to remove the wheel, however the process is facilitated if the wheel is detached.

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