Volvo S80 lights won't turn off after battery disconnection on Volvo S80

Some Volvo S80 owners report experiencing issues with lights not turning off after disconnecting the battery, which may indicate potential electrical problems within the lighting system. These owners have noted that specific fuses, particularly fuse 32 related to the Central Electronic Module, can contribute to battery drain issues. Additionally, some have found that disconnecting the battery and starting the vehicle with the key in the ignition switch off position can help resolve certain lighting problems. Intermittent electrical system shutdowns while driving have also been reported, suggesting a more significant electrical issue. Furthermore, complications with the alarm system, including battery leaks that cause corrosion, can lead to electrical anomalies such as lights remaining on. It is recommended that affected owners have their vehicle's electrical system inspected by a qualified mechanic, check the condition of relevant fuses, and address any alarm system concerns promptly to prevent further complications. Seeking assistance from a certified Volvo technician may also be necessary to ensure the proper functioning of the vehicle's lighting system.