Saturn SW2 battery draining issue even when off, fuses checked on Saturn SW2

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

Problem overview

Some Saturn SW2 owners report experiencing battery draining issues even when the car is off. These owners often find it necessary to check the battery and charging system to ensure proper functionality. Many report needing to test for parasitic drain, as a measurement exceeding 35 milliamps indicates further investigation is required to identify the source. Additionally, some have discovered that a bad fuse can cause a constant drain, necessitating inspection of fuses to prevent battery depletion. Current draw testing is another method used, where owners connect a measuring device to the negative battery cable and remove fuses to locate the problematic circuit. Furthermore, using a test light or meter can reveal hidden drains, prompting owners to pull fuses one at a time for diagnosis. To efficiently prioritize inspections, some owners utilize fuse ratings, starting with higher amp circuits that may indicate a fast battery drain. Lastly, wiring issues such as pinched or loose wires are also reported as potential causes of voltage fluctuations contributing to battery drain. By addressing these concerns, Saturn SW2 owners can work towards resolving their battery issues effectively.

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