Hello, once again a new problem: I have the battery jammed with the backend during the charging procedure to protect all the control units from overvoltage. now after attaching the battery the error message “SRS Airbag maintenance condition” and the red airbag light. am friendly, which cannot delete the error, says, will probably be a mistake in the airbag control unit which must be exchanged if a previous software upload does not manage any help. cost 600-700 €. airbags are currently except operation according to workshop master. in juni I have tuev and that will probably not find that funny when there are all the lamps lights. so now the question what I can do for myself….can I pull off the plug connections of the control unit without continuing and plug up again? I would like to have to check the plug connections of the last one before I can exchange a control unit which may not fix the noise of the workshop. but as soon as the control unit can not be broken on the propriety is also the propriety device.