Volvo S80 won't start, only one click despite new battery and starter, possible connection issue on Volvo S80

Some Volvo S80 owners report experiencing starting issues characterized by a single click sound, even after replacing the battery and starter. These problems are often linked to corroded or loose starter cables and connectors, which can hinder the vehicle's ability to start. Additionally, faulty connections or corroded grounds, particularly at the Central Electronic Module (CEM), can contribute to these electrical problems. Owners are advised to check the fuses that connect the battery cable to the starter, as faulty fuses or fusible links may lead to starting difficulties. Even with a new battery, underlying issues such as a weak or discharged battery can still cause problems. Furthermore, the overall health of the electrical system is crucial, as clean and tight connections at the battery, alternator, and starter are necessary for proper functioning. Addressing these common issues can significantly enhance the likelihood of resolving the starting problem and restoring the Volvo S80's performance.