The only time this happens to me is when the alarm sensors are triggered off (and the engine wouldn't crank too).
Otherwise, I think it could be an electrical wiring crossed which might take more time to analyse and detect the sequence.
When did you notice this, and can you report any other incidences prior to this happening, i.e. dashboard lights/indicator lights flashing, intermittent loss of power?
Your doorlocks could be due to the central-locking pump. Just a hunch.
126 tailed by a 203, 129 leading the pack.