For convenience features advertised as requiring active driver supervision and not making the vehicle autonomous, I think it only really makes sense for the driver to be liable.
Similarly, if some airplane instrument is stated to require regular calibration to stay within acceptable error limits, I don't think the manufacturer would be liable if the instrument starts to drift when those calibrations are not carried out. Or if some crash-contributing decision is made based on assuming a higher accuracy than promised.
Similarly, if some airplane instrument is stated to require regular calibration to stay within acceptable error limits, I don't think the manufacturer would be liable if the instrument starts to drift when those calibrations are not carried out. Or if some crash-contributing decision is made based on assuming a higher accuracy than promised.