This is my very first post, so please be gentle with me. My job is a trouble shooter who helps the service techs out when they need it. (oh and my shirt gets plenty dirty, thank you!). I work with a wide range of brands, but I'm not sure of the line regarding company secrets and other IP related issues in the context of this forum. So here goes.
Like Broke Sheave said, Miconic covers a range of Schindler stuff. Assuming, however that its a MicV were dealing with, then yes you can. If you have two or more in a group, then it's easier, if they are geared, then easier still. It does involve defaulting the car so it will revert to the factory login PW. Once logged in, you will have to run through the drive and shaft setups to to get it running again, but assuming you are familiar with the gear then this should be a doddle.