The GLA220D 4matic W156 vehicle had a malfunction with its exhaust flap, which necessitated the replacement of the rear

[newjimmy54]

Assistance is required.

Recently, my GLA220 had intermittent occurrences of entering a state often referred to as "limp mode." On each occasion, the acceleration was impacted and only the environmental option was available for selection on the automatic gearbox.

Upon conducting a comprehensive scan, I have identified issues pertaining to the exhaust flap and its corresponding actuator.

I proceeded to repair the exhaust piece including the flap actuator, which was obtained directly from the authorized Mercedes-Benz replacement parts supplier. Subsequently, I cleared the error codes and anticipated that this intervention would resolve the issue. The event did not occur.

At now, I am contemplating the further steps to do in the diagnostic process.

The unit in question establishes communication with a drivetrain controller unit, specifically identified as either A 000 900 36 6 or N127 (numbers recollected from a manual consultation earlier today, with a possibility of slight inaccuracies). Consequently, inspecting this particular component is a potential course of action. However, it is worth noting that no fault indications are currently being shown for this unit.

Has any other individual had this particular problem, namely the replacement of the exhaust flap exhaust portion, while still encountering the same fault?

Tomorrow, I plan to do a thorough examination of the wire loom in order to determine the presence of any potential short circuits. The object in question is shielded by a layer of foil heat shield wrap; yet, there is a possibility that it may be exposed to elevated temperatures and potential electrical malfunctions. Regrettably, the actuator that was extracted demonstrates functionality when a 5-volt connection is established between its terminals. Nevertheless, it remains uncertain if the feedback controller from the previous assembly has been rendered inoperable, and there is a lack of knowledge on the appropriate testing procedure for this component.

Has there been any discovery of the wire loom being severely damaged?

Please provide feedback regardless of whether you have had similar issues with car types other than the GLA, since Mercedes-Benz seems to use identical components in their other vehicles.

[MBcarOWNER]

Have you verified the functionality of all the fuses in your system? It is possible that the defective unit caused a fuse to blow, resulting in the lack of power supply to the replacement unit.

[newjimmy54]

Initially, I used this approach as my first troubleshooting step, since I encountered the same error even after replacing the device.

In the event that my fuse testing approach is susceptible to producing a false positive outcome. In order to assess the functionality of the fuses, I examined the metal contacts situated on the upper left and right sections for the presence of continuity.

The fuse box located in the engine compartment as well as the one situated in the footwell were both subjected to testing.

Is there a further set of fuses that I have overlooked?

[matthewlightburn]

Have you provided instruction on the recently introduced linguistic phenomenon known as the flap?

[newjimmy54]

No, I have not completed that task. What is the process by which something is accomplished?

[newjimmy54]

UPDATE: For those who possess an interest in this matter, I have made the decision to use the services of Mercedes in order to effectively address the issue pertaining to the "flap" in question.

The stated rate for diagnostic services, inclusive of value-added tax (VAT), amounted to £174 per hour. Despite feeling limited in my options, I proceeded with the service.

Upon observation, both individuals displayed a similar state of bewilderment. Ultimately, it was determined that the newly installed component I had fitted was provided in a defective condition. We patiently awaited the arrival of a product from Germany and thereafter proceeded to install it.

Remarkably, the desired outcome was successfully achieved. I had just had a significant stroke of misfortune wherein I acquired a defective new component.

The total cost for all of these items is zero pounds. The component that was acquired from Mercedes is accompanied by a comprehensive guarantee of two years, covering both parts and labor, irrespective of the entity responsible for its installation. No diagnostic time was charged to me.

The total expenditure, including of value-added tax, for the components alone amounted to around £360. In addition to the inconvenience and perplexity arising from the failure of the repair I had attempted.

Mercedes demonstrated commendable conduct in handling the situation.

[RuthHimmic]

The outcome is commendable.

One of the reasons for the replacement of the OM642 cooler seals and installation of a new oil cooler from Mercedes was addressed during the maintenance procedure conducted today. There are indications that there may be leaks in the near future, suggesting that Mercedes will be replaced and fitted with a Field of Change.

[Gorrillaas]

Greetings.
I am experiencing a same problem with my GLA vehicle. Is there any knowledge or information available on the potential efficacy of replacing the flap motor, or would it be necessary to get a whole back exhaust section inclusive of the motor? Additionally, could you please provide the details on the order placement and any specific item numbers associated with the rearsection pipe and flapmotor?

[newjimmy54]

One potential approach is to consider replacing only the motor unit; however, it is important to note that this component is often only available as part of a breaker assembly. Mercedes does not typically provide the motor unit as a standalone component for separate purchase.

A mid-section pipe with a motor/actuator pre-installed, together with two clamps, may be purchased from Mercedes. Within the factory setting, the pipe in question spans a considerable length, extending from the rear of the engine to the rear end. However, it is worth noting that this is not how the replacement parts are marketed. If such were the case, consumers would be compelled to purchase a section including both the catalytic box and the rear silencer box, even when only one of these components is required. Moreover, it may be a greater challenge to exchange an item of such magnitude.

I will now proceed to search for the invoice pertaining to the component numbers. The item was just purchased at a nearby authorized Mercedes dealership. Kindly request to be connected to the department responsible for replacement parts.

Greetings

[Gorrillaas]

Thank you, I much appreciate your response. I want to contact the local Mercedes-Benz dealer in order to ascertain the availability of the desired item via their spare parts department.

I will provide an update about the outcome at a later time.