Electronic system for the remote maintenance of a crane, the system comprising: - a computer configured to: • transmit over a telecommunications network a first request message carrying a remote command for the maintenance of the crane, said first request message being compliant to a medium/long distance radio-mobile protocol; - a mobile device configured to: • receive from the telecommunications network the first request message and extract therefrom the remote maintenance command; • generate a second request message carrying the remote maintenance command, said second request message being compliant to a short distance wireless protocol; - an electronic control unit configured to: • receive the second request message and extract therefrom the remote maintenance command; • execute the remote maintenance command; • send towards the computer a first answer message carrying information correlated to the remote maintenance command, said first answer message being compliant to the short distance wireless protocol, characterized in that the mobile device is further configured to: • generate a third request message carrying a local maintenance command for the maintenance of the crane received from a local maintenance worker, said third request message being compliant to the short distance wireless protocol, and wherein the electronic control unit is further configured to: • receive the third request message and extract therefrom the local maintenance command; • execute the local maintenance command; • send towards the mobile device a second answer message carrying information correlated to the local maintenance command, said second answer message being compliant to the short distance wireless protocol. - a computer configured to: • transmit over a telecommunications network a first request message carrying a remote command for the maintenance of the crane, said first request message being compliant to a medium/long distance radio-mobile protocol; • transmit over a telecommunications network a first request message carrying a remote command for the maintenance of the crane, said first request message being compliant to a medium/long distance radio-mobile protocol; - a mobile device configured to: • receive from the telecommunications network the first request message and extract therefrom the remote maintenance command; • generate a second request message carrying the remote maintenance command, said second request message being compliant to a short distance wireless protocol; • receive from the telecommunications network the first request message and extract therefrom the remote maintenance command; • generate a second request message carrying the remote maintenance command, said second request message being compliant to a short distance wireless protocol; - an electronic control unit configured to: • receive the second request message and extract therefrom the remote maintenance command; • execute the remote maintenance command; • send towards the computer a first answer message carrying information correlated to the remote maintenance command, said first answer message being compliant to the short distance wireless protocol, characterized in that the mobile device is further configured to: • generate a third request message carrying a local maintenance command for the maintenance of the crane received from a local maintenance worker, said third request message being compliant to the short distance wireless protocol, and wherein the electronic control unit is further configured to: • receive the third request message and extract therefrom the local maintenance command; • execute the local maintenance command; • send towards the mobile device a second answer message carrying information correlated to the local maintenance command, said second answer message being compliant to the short distance wireless protocol. • receive the second request message and extract therefrom the remote maintenance command; • execute the remote maintenance command; • send towards the computer a first answer message carrying information correlated to the remote maintenance command, said first answer message being compliant to the short distance wireless protocol, characterized in that the mobile device is further configured to: • generate a third request message carrying a local maintenance command for the maintenance of the crane received from a local maintenance worker, said third request message being compliant to the short distance wireless protocol, and wherein the electronic control unit is further configured to: • receive the third request message and extract therefrom the local maintenance command; • execute the local maintenance command; • send towards the mobile device a second answer message carrying information correlated to the local maintenance command, said second answer message being compliant to the short distance wireless protocol.