The annual 3.15 has come to an end, and all car companies have landed safely. Although the "those events" predicted by the network have not been exposed, it does not mean that the automotive industry is completely without problems.
The "lock electric door", which had been silent for more than half a year and thought that the dust had settled, was once again pushed into the public eye on the eve of 3.15.
A Wei ma owner claimed on Weibo that this would be "the last time all users of WM rights protection call out To Shen Hui and WM Motors". The owner of the car said that for "WM's private power lock and the follow-up storm caused by it", WM has not directly docked with rights protection users.
Cause of the incident
Back in May 2021, a owner of the WM EX5 found that the actual mileage dropped by 50 kilometers compared to the original after receiving free maintenance in the summer. Subsequently, more and more Owners of Wei Carriages in the same situation occurred. Some car owners found that after the upgrade of the WM manufacturer, the full voltage of the battery was reduced from 408V to 397V, resulting in a 15% reduction in cruising range.
Since then, the word "lock electricity" has become a hot topic in the main circle of Wei carriages, so that later the entire automotive industry has become popular. The industry has given a professional explanation for "locking electricity": it means that car companies lock the SOC (battery charge state) by rewriting the BMS battery management system of electric vehicles, which in turn affects the battery capacity and charging and discharging performance.
The collective rights protection of the owner of weima car began, believing that WM motor "without the consent of the owner, without authorization, by upgrading the BMS software, setting the upper and lower thresholds of charge and discharge to reduce the hidden danger of battery defects, resulting in a serious contraction of the vehicle's mileage", and there are huge safety risks in the battery.
No matter how much waves are set off on the Internet, Weima is still unmoved. In addition to inviting users back to the store for testing and saying that the test results are "all right", the behavior of "locking the power" is almost "zero response".
Not an isolated case
Under the verbal criticism of netizens, it was slowly discovered that "locking electricity" was not just a case of Weima, and even happened earlier.
GAC AION S has already had the problem of "locking electricity" as early as 2020. It was only when the "locked electricity" was finally recognized by the manufacturer, and the car owner was given a 1,000 yuan care package per person at that time, which did not cause greater waves.
In March last year, the owner of baic motor EX360 broke the news that after the official recall system was upgraded, the car had problems such as speed reduction, shortened endurance and steering wheel weight, and the vehicle was suspected of being "locked".
Since July 2020, SAIC Roewe has officially upgraded the Roewe ERX5 system, after which some owners found that the endurance was reduced by nearly 100 kilometers. By May 2021, there were again complaints from saic motor Roewe ERX5 owners, questioning that the vehicle was secretly "locked" after the system upgrade.
At the end of September 2021, some Euler IQ owners reported, "After the recall in July, the manufacturer did not give a solution approved by our car owners, but only went to the door to give the BMS a mandatory upgrade, but the follow-up mileage of the upgrade became shorter, and the charging time became longer." Although it is not pointed out, experienced people will think of "locking the electricity" when they look at it.
However, none of these behaviors have attracted much attention like Weima. Except for gac ace, the rest of the manufacturers did not make a positive response to the "locking power".
The reason behind it
For users, even if the vehicle is locked in electricity, if the mileage reduction is small, it is generally impossible to judge whether the power is locked. Moreover, the specific parameters of the power battery are difficult for third-party institutions to obtain and detect.
Behind this is the safety hazard of the new car to attract attention and blindly pursue high endurance and charging speed and immature technology when it is released. Therefore, it is necessary to ensure security in this way "in disguise".
Another angle is about the three-electric quality assurance policy, when the current new car is sold, it will promise "how much the battery decays more than one percent" for free replacement. After the power is locked, the battery capacity itself is reduced, thus delaying the time to reach the critical point.
Although "locking the electricity" has become the acquiescence of car companies, whether there is fraud is inconclusive, but to ensure that consumers' right to know should be the bottom line of every brand.