The CX90 PHEV, which is a plug-in hybrid electric vehicle, had a malfunction in its hybrid system and electrical leakage only two days after its purchase.

[Gianni682]

The evening was not satisfactory. Two days after the receipt of the vehicle, it had a malfunction at an intersection, rendering it unable to start or shift out of the park position. Two significant faults have been reported: Hybrid System Malfunction, which renders the car inoperable, and Electrical Leakage in Hybrid System Detected.

The vehicle's immobilisation in the park position, necessitating the use of specialised towing equipment, resulted in a two-hour wait for the arrival of a tow truck. The tow truck is expected to arrive around 1am.

 

[honeycut_mazda5]

Based on my analysis, it seems that the issue at hand may be attributed to a failure in the isolation of the high voltage battery. The matter at hand is of a significant nature. This indicates that the system continues to detect elevated voltage levels even when the primary contactors, which may be conceptualised as high-voltage switches, are in an open state. It is essential to locate and replace the battery disconnect module inside the vehicle, which may necessitate replacing the whole integrated high-voltage battery unit if the module is included therein. I lack familiarity with Mazda architecture; yet, it is expected to adhere to the same fundamental principles.

An alternative hypothesis to consider is that this occurrence may be a spurious indication of failure. The Mazda SW/Calibration is experiencing some issues. One method for determining the effectiveness of a code clear is to do a test drive and see if the issue reoccurs. In the event that the code is of a latching nature, it is only the dealer that has the requisite equipment to effectively resolve the issue.

[Gianni682]

Thank you for your response. The vehicle exhibited a failure to disengage from the park position, nevertheless, we successfully arranged for the vehicle to be transported to the authorised dealership after a considerable duration of time. I will inform you about their statements.

[QuirkyPixel]

What was the content of their statement? We are now experiencing difficulties with our CX 90 PHEV as well.

[Gianni682]

 

The item was entrusted to the dealer on Sunday evening, and it has been a span of seven days since then, as it is currently tuesday  morning. The battery of the vehicle was recharged by the dealer, resulting in the resumption of its operation. Over the course of the last week, they have engaged in the act of driving and doing diagnostic procedures in order to identify the problem. The individual placed an order for a replacement component that pertains to the heating system, which is being sourced from the United States. According to their statement, they have engaged in telephonic communication with individuals located in Japan in order to assist in the process of diagnosing the problem. There is currently no information available on the anticipated timeframe for the restoration of the item in question. Currently, we possess a rented vehicle. I will provide an update on this forum upon receiving the item.

 

morning. The battery of the vehicle was recharged by the dealer, resulting in the resumption of its operation. Over the course of the last week, they have engaged in the act of driving and doing diagnostic procedures in order to identify the problem. The individual placed an order for a replacement component that pertains to the heating system, which is being sourced from the United States. According to their statement, they have engaged in telephonic communication with individuals located in Japan in order to assist in the process of diagnosing the problem. There is currently no information available on the anticipated timeframe for the restoration of the item in question. Currently, we possess a rented vehicle. I will provide an update on this forum upon receiving the item.

Edited October 24, 2023 by Gianni682

[honeycut_mazda5]

There is a possibility that a coolant leak in the battery thermal management system might result in short circuits inside the battery cells.

[Gianni682]

The vehicle was retrieved from the Mazda dealership after a period of 10 days. A significant amount of effort was dedicated to the testing and diagnosis of the vehicle. Ultimately, the heater responsible for warming the water included into the battery system was replaced. The alphanumeric identifier "KMV6-61-FHX" is referenced in the user's text. The vehicle was retained for an extended period of time in order to do an extensive road evaluation prior to its return to us. The vehicle's performance is now satisfactory.

[QuirkyPixel]

Has Mazda provided any kind of compensation or resolution for the aforementioned concerns experienced with your relatively new vehicle? It is imperative that a solution be provided by them in response to your concern.

[Gianni682]

Mazda has failed to provide any kind of compensation or resolution subsequent to the completion of the repair. A pertinent matter that requires resolution pertains to the reimbursement process for the car towing expenses incurred subsequent to the failure of Mazda Breakdown Service to get an appropriate tow truck within a three-hour timeframe, despite the service being sought in a metropolitan area with a population of one million people. Another issue arose when the tow truck came and discovered the absence of a 'towing eye' in the vehicle, which posed a challenge in loading the automobile onto the flatbed. Mazda made the decision to not include them as standard equipment. The dealership experienced astonishment at this realisation and subsequently made the decision to get those items for all of their new vehicles, generously providing us with a quantity of two. It is vital to verify this aspect on a recently manufactured Mazda vehicle.

In any case, our vehicle has remained in satisfactory condition subsequent to the repair. There have been no reported incidents or problems throughout the recent weeks. The automobile has accumulated a distance of more than 1000 km at now.

[Starcar2022]

Was the rental car provided by Mazda?

[Gianni682]

Indeed, they did.

[Rudy7831]

Thank you for providing the updates, and I hope that you will experience improvement in the future. The CX-90 model does not have eye tow hooks as standard equipment, however the vehicle's bumpers do include concealed mounts for such hooks. The purpose of these tow hooks is not intended for the act of towing, but rather for the purpose of securely fastening the vehicle for transportation over international borders. A towing service specialising in commercial operations will possess the requisite knowledge and expertise to effectively tow an all-wheel drive plug-in hybrid electric vehicle like as the CX-90. It is advisable to inform the towing service about the specific vehicle that requires towing in order to ensure the dispatch of an appropriate tow truck and equipment.

[Gianni682]

Interestingly, inside the trunk toolkit of the CX90, there exists a designated space for the towing eye, indicating a clear anticipation of its inclusion. Consequently, the absence of this item seems to be an oversight when seen.

A tow truck sent by Mazda Breakdown arrived at our location, but was unable to move the vehicle due to the absence of towing hooks necessary for securing the car onto the flatbed. Due to the vehicle being immobilised in park, using a flatbed for towing purposes would not have been a suitable option.

At 1am, we were required to independently arrange for our own towing service, specifically opting for a dolly tow truck instead of a flatbed. The assigned tow truck driver successfully executed the task without encountering any difficulties, hence eliminating the necessity for the use of a towing eye. We were compelled to make the necessary arrangements subsequent to the inability of Mazda Breakdown Service to get a suitable tow vehicle for us.

[colinallcars]

The sight is distressing. The vehicle had a Hybrid Malfunction error, however it remained operable. There are several discussions and debates about this particular issue. What actions does Mazda intend to do in response to this situation?