Battery draining when the engine is off.

Asked by Ralph Mar 16, 2020 at 05:24 PM about the 2002 Pontiac Bonneville SLE

Question type: Maintenance & Repair

2002 Pontiac Bonneville. Drains the battery when shut off for extended periods.
I can hear a faint intermitant buzzing after I shut the car off.

2 Answers

40,075

pull fuses till that sound stops then check that circuit , if it; still drains do a parasitic test .

2 people found this helpful.
70,965

youtube will have many videos on battery draw/drain....

2 people found this helpful.

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