Imagine if you bought a zero-hete 5 second electric vehicle, this I want to show off the acceleration performance in front of my friends. After I want to be OTA, I actually run, but the same fuel car is, the most critical is that the battery is still sliding, what do you do?
Recently, hundreds of GAC Toyota IA5 owners have experienced similar troubles: Under the premise of any tips, the vehicle battery management system BMS is “quiet” OTA, manufacturers “lock electricity”, people decrease The power battery can be used, limited to output power, resulting in shortened vehicle life, insufficient power, and severely affects driving experience and safety.
So, the owners reported to the Bureau of Quality Development Bureau of the State Market Supervision, I hope the manufacturer give reasonable explanation. What is the reason? Is the main plant to secretly “lock the electric vehicle secret”
The effect after “locking”
The complaint list of open the vehicle quality can see the Guangzhou Automobile Toyota IA5 OTA It is mainly concentrated in 2019 by the manufacturer’s lock tram type, and there are fewer parts of 2021, and the problem is mainly concentrated in the following three points.
The most intuitive experience is a decline in power. 
2019 Guangqi Toyota IA5 leader Wang Mr. Wang said in a media interview: the driving force is very sudden. In a certain urban acceleration overtaking, it is very sure to easily overtake the distance, and the finale has accelerated slowly, and there is a collision, and the big truck followed the speaker.
Mr. Wang, who has encountered the scene of the scene, quickly went to 4S repair, the answer obtained after the test was: the battery voltage dropped to 369V from 384V, and the battery SOC charge capacity was reduced to 84%, and the motor power was dropped from 135kW to 93KW.
Decrease in motor power, not only makes Mr. Wang’s electric vehicle speed changePoor, the highest speed has also declined, and it can be easily 120km / h in the past, and now accelerates to 100km / h.
For the 2019 GAC Toyota IA5, Mr. Zhao, the owner of the owner, the most intimate is shortening. Because the place of residence and the unit are far away, Mr. Zhao goes back and forth to 20 kilometers. This car NEDC comprehensively is 510 kilometers, and the actual battery life is about 400 kilometers. It can basically meet a five-day commuter, but On the third week of August, the car was dead on Thursday, and the actual battery life was shortened to 310 kilometers.
After the 4S shop was detected, the 58.5-degree battery was actually charged only 50.5 degrees, and the power was “locked”, which was approached by one, and the battery decreased by 100 kilometers. Mr. Zhao is tantamount to a fraud.
Decreased power, shortened battery life, growth of electric vehicles is “locking” sequelae more than dancnus in Guangqi Toyota IA5, and the entire Guangzhou Automobile series new energy model has conducted centralized explosions in August.
For example, the owners of the VAI5 “a mother compatriots” are also one of the victims. There are many users in the car online: I spent 170,000 to buy an actual battery life less than 400, and accelerate the fast tram. Guangqi Ean SUV – Aion LX has not been spared, an AION LX 80 Zhizun version of the car owner said: the battery life has shrunk from 650 kilometers to less than 500 kilometers.
Furthermore, from most complaint users, they still have a commonality: in the case of users who don’t know, whom you are secretly upgraded, why do you have secret “lock”?
Secret “Lock” reasons
First we have to clear a concept: what is the “lock” of electric vehicles.
As the name suggests, the lock is to lock the power battery power. The vendor achieves the adjustment of the battery power SOC value by rewriting the BMS system, re-seting the battery voltage range to achieve the limit battery charging and electricity. Purpose.
From the structural angle analysis, the battery capacity is locked in a secure range. It is the advantage to prevent excessive charges from excessive deposits, causing the risk of battery short circuit, which leads to thermal out-of control, battery spontaneous combustion and even explosions. . Therefore, the purpose of “locking” is to improve electricity safety, but the battery power does not reach the highest value, and the above three major problems are inevitable.
Therefore, there is a new energy vehicle enterprise like BYD’s three-electric technology reserves, and it does not need to improve safety through “locking”. Performance and battery compromise. So, the secret “lock” of GAC Toyota IA5 is not a helplessness that the power battery is not too powerful?
Coincidentally, in the Guangqi new energy series products, the large-scale “lock” complaints of the Guangzhou Automobile New Energy series – July 15th, Xiamen has a GAC Toyota IA5 charging spontaneous combustion incident, followed by IA5 owners The car BMS system starts automatic OTA upgrade, which has to make the owners suspect the correlation between two things. The careful users have also found that the most complaints have the most complaints of GAC Toyota IA5 and GAC AION S equipped with the same model.
For consumers,Manufacturer technology is not limited, through “locking” indirectly improve safety, it greatly reduces the use of electric vehicles, which transfers technical costs to consumers. What’s more, “Lock” is not true. If there is a hidden danger of battery safety, then consumers continue to express them in use or with battery aging still has no small security risks.
Summary
For the large-scale complaints of the owner, the Tianya Jun called the customer service of GAC Toyota, and the answer received is also very perfunctive: unclear, there is a problem to detect 4S shop.
As the world’s sales volume, Toyota’s strength in the field of fuel vehicles, hybrid power is unquestionable, but in recent years, Toyota has been taken by Tesla, in recent years. It is a big new forces, and even the public has opened a big cut. In addition to the oil-to-electricity / C-HR, there is only one type IA5 hanging through the national standard. Today, IA5 is unfavorable, and there is no doubt that I will give a shadow on Toyota’s electric strategy. In the end, I also hope that Guangzhou Automobile Toyota can give a satisfactory answer to the user.