SCO issued the lawsuit against the car manufacturer in March as part of its campaign to persuade Linux users to buy SCO licences.
SCO claimed that DaimlerChrysler had refused to provide a certificate of compliance to prove that it had abided by a November 1990 Unix licensing agreement.
DaimlerChrysler sent letters to SCO arguing that it had no right to seek certification, but nevertheless supplied the software firm with a certificate to show that it no longer used the software.
SCO launched the action after the 30-day deadline for certification had passed, but before it received the letters. The only outstanding question is whether SCO is entitled to damages for the late delivery of the certificate.
SCO says it has a right to seek licence fees because IBM allegedly incorporated elements of SCO Unix in Linux without its authorisation. IBM disputes this.