In the year 2019, the E53 model had a phenomenon whereby the vehicle continued to accelerate even after the throttle had

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Jul4ster
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Joined: Thu Jul 04, 2019 7:15 pm

Greetings, everyone. I have been in possession of a 2019 E53 Coupe for a duration of around 18 months. I have developed a strong affinity for the automobile in question, nevertheless, I am now experiencing a matter of great worry.

When the throttle is released concurrently with the shifting of gears, whether done manually or automatically, the vehicle will exhibit a continued acceleration for a brief duration, often lasting a second or two. The vehicle operates in Eco mode to the same extent as it does in sport+ mode. Despite using the braking system, the vehicle remains in motion. I had a singular incident in which an individual inadvertently opened a car door in my immediate vicinity, necessitating my prompt engagement with the vehicle's engine in order to execute an emergency stop. On another instance, the vehicle veered off the road and ascended the pedestrian walkway due to understeering while navigating a small circular intersection.

The vehicle is scheduled for inspection under warranty for the third occasion tomorrow. Initially, the gearbox underwent retraining, but this intervention failed to resolve the issue. During the subsequent instance, they made a concerted effort to manipulate my perception, inducing me to accept their actions as customary conduct.

I am seeking to gather others' perspectives on the issue at hand, as well as explore potential courses of action in the event of a recurrence of gaslighting or an inability to resolve the matter.

I would want to express my gratitude in advance for any assistance provided.
Megan_Wilson88
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Joined: Sun Aug 08, 2021 4:40 pm

Is it not anything trivial, such as a misaligned carpet mat?
Jul4ster
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Joined: Thu Jul 04, 2019 7:15 pm

No, there is no evidence or indication of such a phenomenon.

The occurrence of the described behaviour is contingent upon the simultaneous action of releasing the throttle and executing an upshift. The occurrence of this phenomenon is practically consistent, however it does not pose any issues in the absence of a gear shift. There seems to be no physical obstruction present; rather, it seems that the issue is inside the electronic control unit (ECU) or gearbox control unit (TCU) mapping.
MBcarOWNER
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Joined: Fri Sep 13, 2019 2:15 pm

In the event that you own an OBD reader, it would be advisable to examine the throttle closed switch, if present, or the throttle position sensor (potentially the same component).
Jul4ster
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Posts: 106
Joined: Thu Jul 04, 2019 7:15 pm

Regrettably, I do not own an OBD reader at my disposal. Certainly, one would expect a defective Throttle Position Sensor (TPS) to manifest in several other scenarios as well.

Brief update.

As anticipated, I am now experiencing a recurrence of gaslighting. A technician was sent to retrieve me in order to demonstrate the issue, despite his acknowledgment of successfully reproducing it. The justifications provided for the absence of culpability were one or several of the below factors:

The vehicle in question is an AMG model specifically designed for use on racetracks.
The AMG vehicle has a relatively low level of engine braking, yet it does possess a greater degree of engine braking compared to standard vehicles due to the presence of a mild hybrid motor.
The clutch in question operates using a wet friction mechanism, which may be attributed to many factors.
The observation of the mentioned phenomenon is limited to instances of significant acceleration, implying excessive speed when driving. The act of entering a heavily trafficked roundabout does not need immediate acceleration.
In the event that a deer unexpectedly crosses my path and necessitates an emergency stop while the vehicle's engine is concurrently attempting to accelerate, it is essential to acknowledge that the responsibility for the animal's sudden appearance lies beyond the purview of the automobile.

Ultimately, I successfully persuaded him to initiate a discussion on the matter with AMG directly, despite his expressed concern about potentially facing a substantial number of inquiries. It seems that his primary focus was directed on the aforementioned matter rather than prioritising the security of the vehicle.

Nevertheless, I do not anticipate any kind of resolution. I am hesitant to reclaim possession of the vehicle due to my perception of its lack of safety. I have had many near accidents as a result of this issue, leading to a persistent state of vigilance when operating a vehicle. In the event that an accident were to occur, resulting in harm to an individual, I would assume the responsibility for the incident.

Given the absence of a settlement, what recommendations would individuals offer?
Bluewhaleeee
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Joined: Wed Jun 08, 2022 2:40 pm

What in the world is the rationale behind all of those reasons? It is not permissible to operate a saloon automobile of the AMG model on public roadways. Does the presence of a wet clutch imply autonomous acceleration? Regarding the topic of deer, it is worth noting the profound impact it has had. I would promptly escalate the matter to a superior at MB and advocate for disciplinary action against the technician.
Jul4ster
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Posts: 106
Joined: Thu Jul 04, 2019 7:15 pm

That aligns with my first perspective; yet, gaslighting is a phenomenon that warrants more consideration. This situation prompts individuals to doubt their own correctness. It is reassuring to ascertain that there are others who share the perspective that such behaviour is deemed inappropriate.
almamater78
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Joined: Wed Apr 20, 2022 3:40 pm

Greetings, I see this as a potentially hazardous situation. :evil:
MBcarOWNER
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Posts: 134
Joined: Fri Sep 13, 2019 2:15 pm

The statement provided lacks factual basis and is unsubstantiated.
Two more pieces of garbage. Request them to provide an explanation for their statement in order to facilitate amusement among all those involved.
For an extended period, I have used wet clutches in the context of motorcycles. One potential concern is that the plates may adhere to each other if left undisturbed for an extended period of time. An elucidation of their theoretical framework is required.
The statement provided is deemed to be very questionable and lacking in credibility.
Substitute the term 'deer' with 'kid' and observe the next discourse.
Kindly request the provision of written responses.
Are there any real-time data displays available during such occurrences?

The best or nothing is my motto.
MercedesFan2022
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Posts: 129
Joined: Sun Jan 02, 2022 2:15 pm

Following the aforementioned list provided to the original poster (OP), it would be beneficial if the OP could disclose the specific dealership under consideration, as well as the identity of the individual responsible for generating the feeble and unsatisfactory justifications.
The statement made is unsubstantiated and lacks credibility.
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