Does Accessory Position Drain Battery. Ad Find Deals on Products in Motorsports on Amazon. With Fast and Free Shipping on eBay.
A more problematic drain is any braking system that activates the cars brake lights especially in hilly country when braking is constantly on and off. Power is always supplied. Yes accessory position will cause a slight drain on the battery.
The only reference is it states.
Even with nothing pulling on the battery if I leave my key in the accessory position it will kill my big Denali SUV battery in about an hour. Yes the ACC position powers your stereo and and a few other circuits are live. If the switch is moved to the AUTO DIMMING position Fig. Even with nothing pulling on the battery if I leave my key in the accessory position it will kill my big Denali SUV battery in about an hour.
