I would Check out battery voltage, if also very low the motor won't crank. You will have a parasitic draw draining the battery. - Nick at Pelican Sections picador Another recommendation for remounting a locked ESL was to remove the tongue which helps prevent the bolt from becoming frustrated, but https://trentongzpet.ssnblog.com/27759297/how-mercedes-esl-can-save-you-time-stress-and-money