Toyota says that the test vehicle `` did not physically move forward '' and that the experiment led to `` an adjustment and refinement '' of the cruise control before it went into production . Translated Toyota report describes a cruise - control system problem . Experts say the translated report describes a software problem . The company claims electronics are responsible for sudden acceleration .
Translated Toyota report describes a cruise - control system problem . Experts say the translated report describes a software problem . The company claims electronics are responsible for sudden acceleration .