Mercury Grand Marquis Headlight Malfunction Due to Defective Light Control Module on Mercury Grand Marquis

Some Mercury Grand Marquis owners report experiencing headlight malfunctions due to a defective light control module, which can cause the headlights to go out unexpectedly, necessitating manual intervention to reactivate them. Symptoms of a faulty module may include dim or intermittent lighting, failure to shut off, or complete headlight failure. Additionally, issues with the headlight switch assembly and light sensor assembly have been reported, contributing to these lighting system malfunctions. There have also been recalls related to the lighting control module for many Panther cars, including the Mercury Grand Marquis, highlighting the seriousness of these recurring problems. In some instances, the malfunction can be traced to the multifunction switch or turn signal switch, which may produce clicking sounds from the steering column. Owners are advised to locate the lighting module under the dashboard for inspection and to seek professional assistance or check for recalls to address these issues effectively.