An iframe from google.com/maps or the Maps JavaScript loads resources from Google (USA) when the page opens and can set identifiers.
The map request is usually not strictly necessary for the basic function of the site, so § 25 (1) TDDDG applies. Without consent or a two-click solution there is no basis; the US transfer must also be justified.
The free scan checks the delivered HTML and shows which services are embedded, whether a cookie banner is detected and whether privacy-policy and legal-notice links are present — with context for each finding. It is not a substitute for legal advice.
This text is general information to the best of our knowledge, not legal advice. For an individual case, consult a law firm specialising in IT law.