] [TechWeb June 21, according to foreign media reports, many owners of older Tesla Model S and Model X, said after a recent software upgrade, they own the vehicle maximum mileage dropped significantly.
In the first half of this year, Tesla Motors have been spontaneous combustion occurred in Guangzhou, Shanghai, San Francisco and Hong Kong. In view of this, May 15, Tesla announced on its Model S and Model X electric vehicle wireless software update to adjust its electric vehicle battery charging and heat management settings.
Tesla said the company released a software update is highly prudent for the purpose, is to "protect the battery, extending battery life." In addition, this software update is only for the Tesla Model S, Model X, Tesla does not involve Model 3.
Last week, several Tesla owners reported that, in a very short period of time, they have car Mileage dropped sharply from 30 miles to 12 miles.
At this point, it seems that only discontinued in 2016, equipped with 85 kwh battery pack Model S and Model X models affected.
For most car owners, the mileage is decreased after the update to version 0.2 and Tesla 2019.16.1 occur.
The owner of a Tesla David Rasmussen (David Rasmussen) suffered by far one of the worst mileage decline.
Rasmussen said he bought the 2014 Model S 85 models on May 13 Mileage is 247 miles, but after a software update, the car's mileage down to the current 217 miles, 5 weeks of decline 11%.
Rasmussen has been drawing his own Model S battery capacity decreases in the chart For the past 100,000 miles, he found that the recent decline in battery capacity is fairly obvious.
With this question he went to a local service center Tesla, and most owners reported the same problem, he was told it was "normal degradation" automotive battery pack.
This is quite surprising, because previous data show that Tesla's battery life mileage over 160,000 miles, the magnitude of the degradation of the battery is limited to 10%.
According to previous data show that Tesla battery life seems to never be a problem, and this is the reason why this update surprising.
On this issue, Tesla confirmed that part of the car mileage reduction is due to a software update.
Tesla said the goal is to update the software, "to protect the battery, improving battery life", resulting in a small portion of the car's mileage is shortened.
The company said it is working to improve car mileage influence on the part of the software update.
Tesla seems to update its battery management system with a new algorithm, based on a number of variables, it limits the ability of some fully loaded vehicle, to extend battery life. In addition, the car battery voltage seems to be limited to 3.9 volts, 4.2 volts instead of the usual. It is unclear what led to this variable restriction.
Tesla said that only affects a small part of the population, but through forums and social media, we find that, in fact, the owners of the affected lot. (Little Fox)