This car has only 148,000 miles and owned only by a elderly couple, so I know it'* just usual wear and tear. Bit the radios 15 amp circuit somewhere is grounding out and draining the battery. Any ideas as to what or better yet where this happening? Thanks.

What do you mean by "grounding out"?

When the fuse is in. It drains the battery. No lights or nothing comes on the radio. I put the fuse in and the next morning my battery was dead. Unplugged it and charged the battery. No problems with the battery since I removed the radio fuse. So I believe it'* grounding out somewhere from the fuse box but maybe before the radio. Is there any other things that run off that power? Or have the same common ground?

You have parasitic draw. The radio may be bad. What all does that fuse feed?

I guess I need to find the wiring diagram in order to find out where everything goes. I also noticed my turn signal works but no sound. And when I leave the keys in the door theirs no sound to let you know you did. Plus there'* a electrical plug for a phone charger on the middle console that when i had the phone charger plugged in while the radio fuse was in, it fried it. So all of these things must be connected some how.

Operation CHARM: Car repair manuals for everyone.
Home >> Buick >> 2011 >> Lucerne V6-3.9L >> Repair and Diagnosis >> Accessories and Optional Equipment >> Diagrams >> Electrical Diagrams >> Radio/Navigation System Schematics

Radio/Navigation System Schematics

Radio/Navigation System Schematics

Radio Power and Ground





Amplifier (UQA)





Speakers (UQA)





Speakers (UQ3)





Radio (without UE1)





pro multis · About Operation CHARM

It might be the amplifier. I've seen YouTube videos of that or the wiring harness in the doors. But mine doesn't have the plug in types for the doors so I'm thinking it'* the amplifier.