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Parasitic battery drain, 2004 Buick Rainier, troubleshooting ideas? See details.

2004 Buick Rainier: parasitic battery drain overnight when anti-theft is set. When setting anti-theft the horn no longer sounds. 8 hour amperage test today with .006A consistently with anti-theft active. Battery measures 12.55 after 8 hours. Where to go next? Is this a known issue? Recall?

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Posted on Jan 02, 2017

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SOURCE: My 03 Silverado has parasitic battery drain. VOM

Disconnect the auxiliary power cable from the under-hood distribution center that runs to the anti-lock brake controller. Remove the ignition relay from this distribution center (this will isolate/eliminate/indicate the problem as the ignition switch). Unplug any GPS add-on device, and any radar detector, stereo amplifier add-on, I-pod, trailer brake controller add-on, anything that did not come on the truck from the factory. These can be frustrating.

Posted on Feb 13, 2010

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SOURCE: 1997 Toyota Camry XLE has an overnight parasitic

This should be done with everything turned off and the door closed. with negative battery disconnected. place 12 v test light between the battery terminal and the cable end.(on neg. side) if the light lites up there is a drain. remove one fuse at a time until u see the lite go out. that is the sytem the drain is on. usually glove box light or trunk light or visor light left on or stuck on.

Posted on Feb 17, 2010

  • 38 Answers

SOURCE: Parasitic battery drain

A stuck relay will do this.

Posted on Nov 27, 2012

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