battery goes dead
Thread Starter
Racer
Joined: Jan 2007
Posts: 252
Likes: 5
From: bethlehem PA
battery goes dead
hello to all, HELP my interior lights havent worked for a long time. i found fuse was not there. so i put a new fuse for interior lghts. now if i dont drive the car for 2 or 3 weeks the battery goes so i put a new battery in still went dead
took the fues out an now the battery didnt go dead battery is new. im 65yrs old n could use some advice
year 1985
took the fues out an now the battery didnt go dead battery is new. im 65yrs old n could use some advice
year 1985
Last edited by nickpe; Oct 29, 2024 at 01:49 PM.
Pro
Joined: May 2017
Posts: 583
Likes: 196
From: Wisconsin
Check to see what all the lights are controlled by that fuse circuit. That should narrow it down.
Maybe check when it is dark if you can see any lights not shutting off. Under the hood, foot wells, storage compartments or any where else there may be a light still on. If so it could be the switch that controls that specific light.
What year is your car?
Maybe check when it is dark if you can see any lights not shutting off. Under the hood, foot wells, storage compartments or any where else there may be a light still on. If so it could be the switch that controls that specific light.
What year is your car?
Safety Car
Joined: Mar 2017
Posts: 4,197
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From: LeClaire Iowa
About a month ago I went out and my battery was dead. I had accidently turned the interior lights on when I got out of the car. My 96 has the light switch close to where I put my hand getting out. Dan
Melting Slicks
Joined: May 2019
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From: Mid-Atlantic
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It could be a lot of different things drawing power.
But it seems to me that the door switches on these cars are consistent battery killers for some reason.
Even the newer aftermarket ones have been junk right out of the box for me.
But it seems to me that the door switches on these cars are consistent battery killers for some reason.
Even the newer aftermarket ones have been junk right out of the box for me.
Drifting
Joined: Jul 2022
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From: Central Florida
Drifting
Joined: Nov 2018
Posts: 1,796
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From: Mays Landing, NJ
I don't know if the visor mirror lights are tied into that fuse, but would be worth checking. I once accidently moved the switch into the on position when moving the visor around and luckily discovered it was on before exiting the car.
Melting Slicks
Joined: Nov 2016
Posts: 2,256
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From: So Cal
2023 C4 of the Year Finalist - Unmodified
Different years of "C4" have different things on the "Courtesy Light Fuse".
You need to tell us the year of the car to narrow down the guesses. It is a 1985. Bought as a project.
Lots of items on the CTSY fuse in a 1985. Visor mirror lights, console compartment light, lighter, underhood lights and radio memory.
What is the amp draw on the CTSY fuse when everything is off? If it is in the 20 Ma range, could there be an undiscovered Lojack device in the car? I found one in my 1992 in the ABS compartment. The CTSY circuit goes to the rear of the car for the antenna relay and spare tire light, they may have tapped into that for the constant battery power.
Lots of items on the CTSY fuse in a 1985. Visor mirror lights, console compartment light, lighter, underhood lights and radio memory.
What is the amp draw on the CTSY fuse when everything is off? If it is in the 20 Ma range, could there be an undiscovered Lojack device in the car? I found one in my 1992 in the ABS compartment. The CTSY circuit goes to the rear of the car for the antenna relay and spare tire light, they may have tapped into that for the constant battery power.
Last edited by IHBD; Oct 29, 2024 at 12:11 PM.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
Fuse was likely removed because of a faulty courtesy light dimmer control. That is most likely where the 'root' problem lies. Do some research on this. You can replace the dimmer control or just bypass it. But, leave the fuse out while you are researching. Once fixed, you can reinatall the fuse and the battery should not drain.
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Melting Slicks
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The OP states it takes "2 or 3 weeks" for the battery to go dead. Leave the light switch on, the battery goes dead overnight.