Lincoln Town Car door locks malfunctioning, causing battery drain due to lights staying on on Lincoln Town Car

Submitted by Vehicle Owner · Jun 23, 2025
Published by RepairPal

Problem overview

Some Lincoln Town Car owners report experiencing battery drain issues due to malfunctioning door locks, which can cause interior lights to remain on. This problem is often linked to a faulty door lock actuator that includes an integrated light switch, leading to parasitic battery drain over time. To tackle this issue, owners are advised to inspect the door light switches and trunk lock switch for faults that may be keeping the lights activated. Additionally, using a multimeter to measure battery drain and systematically pulling fuses and relays can help pinpoint the specific component responsible for the excessive drain, such as the light control module. Prompt resolution of these door lock malfunctions is crucial to avoid unnecessary battery drain and maintain the Lincoln Town Car's proper functioning.

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