According to foreign media business insider,The battery pack design of Tesla's first model s was flawed and prone to coolant leakage, leading to fire.The report describes how the company appears to be cutting corners on this particular part of the model s, which Tesla was scrambling to ship when it started building itself into a mass market electric vehicle manufacturer in mid-2012.
The new report comes as Tesla ranks last in JD Power's annual new car quality study. Earlier, the National Highway Traffic Safety Administration (NHTSA) announced an investigation into early model s touch screen failures.
The Business Insider reported that there were two specific problems with the Model S battery pack, and the company talked to three former employees and checked internal mail and documents. First, a third-party testing company told Tesla that the aluminum material used by the company at the end of the cooling coil of the battery pack was prone to cracks and pinholes, which could lead to coolant leakage. Besides, the ends of the coils are not perfect, and one employee described them as
According to the media report, Tesla "by the end of 2012, of production by the end of 2012". The issue has been submitted to senior management, but the cars are eventually sold.
Tesla has consistently maintained that its cars are the safest in the world and self-reported annual vehicle fire statistics far below gasoline-powered cars. But the company has made several changes to Model S over the years to reduce fire risk. The company released a software update in 2013 that allows Model S to increase ground clearance while driving at high speeds to reduce the chance of debris piercing the battery pack and to add more physical protection to the newly offline battery pack, all after NHTSA investigation of multiple fires. (The Agency concluded its investigation in 2014. (Tesla also released a software update in 2016 after a Norwegian Model S caught fire