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Join Date: Feb 2013
Location: Austin, TX
Posts: 263
Interior in 'door' mode somehow draining battery despite bulb not illuminating?

Hi - hoping you could point me towards common knowledge on my 1987 3.2

My 2 interior lights function as follows:

- Driver's side - usually set in middle 'off' position but rocked to either left or right positions bulb does not illuminate.

- Passenger's side - usually set in middle 'off' position. Rocked to one side it will turn ON regardless of door- but in the other side position doesn't illuminate.

On friday I manually turned on - as I was handing my son takeout to hold in his lap but confirmed the door setting didn't work. Asked him to shut the light off - he then pressed past the middle position to the opposite position.

Came out yestrday to a completely dead battery. (Battery is a brand new Odyssey 925 AGM, always on a tender except for this weekend.

Questions:

1) Are there 2 bulbs in each interior light one for 'on' and one for 'door?'
2) Would a situation make sense where even w/ the bulb not illuminating it is causing this much parasitic loss to kill a battery in 4 days?
3) If not - where do I begin to figure out how the only 'new' situation - having the passenger side flipped out of the middle position seems to correlate w/ the battery dying completely w/ out anything illuminated in the car?
4) Are there LED replacement bulbs for both the interior lights as well as frunk light so in the case the frunk pressure switch fails I will be less likely to drain the battery vs the incandescent bulbs?

Thanks so much!

Old 10-30-2024, 09:54 AM
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Join Date: Oct 2005
Location: Philadelphia PA
Posts: 486
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If the lights were not lit then they’re not the source of your drain
Do both lights work when the doors are opened? If not the door jamb switches might be oxidized.
The drivers door switch also serves to cancel the power window relay when you open the door.
Common source of a drain
Old 10-30-2024, 02:00 PM
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Location: Austin, TX
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Ah, thank you. Will look at those tomorrow.
Old 10-30-2024, 06:32 PM
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Join Date: May 2002
Location: Georgia
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Yup… contact clean the door switch. Can you operate the windows once the door is open with the key out of the ignition?

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1986 3.2 Carrera
Old 10-31-2024, 12:11 PM
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