Changing the wiper motor on a BMW E61 can vary somewhat depending on the model year and equipment. Here is a general guide that can give you some guidance. Note, however, that it is always advisable to consult a repair guide for your specific vehicle model or have a professional do the job if you are unsure.
The engine can also be repaired to save money on new parts.
Needed tools:
Screwdrivers (various sizes)
Fork wrench or ratchet set
Torx wrench set
Plastic wedges (for carefully loosening fairing parts)
Note: If you are not sure how to carry out this repair or do not have the necessary knowledge and experience, please contact a qualified mechanic or an authorized BMW workshop to have the wiper motor replaced.