Cadillac XTS won't start, needs battery replacement on Cadillac XTS

Some Cadillac XTS owners report experiencing issues when their vehicle won't start, particularly related to battery replacement. These owners note that a failing 12-volt battery can lead to symptoms such as slow engine cranking or complete failure to start, often indicating insufficient charge. Additionally, some owners emphasize the importance of recognizing the signs of a failing battery, selecting the right replacement, and adhering to proper installation procedures. After replacing the battery, some report hearing only ticking sounds without the engine rotating, which may suggest a new battery with a low charge, problems with battery connectors or cables, or a faulty starter. Addressing these concerns is crucial for effectively troubleshooting starting issues in the Cadillac XTS.