Volvo S80 signal lights malfunctioning, slow to respond on Volvo S80

Some Volvo S80 owners report experiencing malfunctioning and slow-response signal lights, which may be linked to several underlying issues. These problems can include inoperable warning lights on the dashboard, such as the check engine or ABS lights, failing to illuminate when a fault is detected. Additionally, electrical system troubles have been reported, suggesting that the electrical system could be a source of the signal light issues. Some owners have also noted that a warning light resembling a caterpillar or a long tube with flashing lines may indicate a malfunction in the heads-up display system, especially if no corresponding error message appears. Furthermore, the malfunctioning signal lights may be associated with check engine light causes, such as ignition cylinder problems or issues with the exhaust gas oxygen sensor. It is advisable for owners facing these issues to inspect the electrical system and warning lights, and to seek assistance from a professional mechanic or Volvo service center if problems persist.