New 2004 C5 Owner
Thread Starter
1st Gear
Joined: Oct 2017
Posts: 1
Likes: 0
New 2004 C5 Owner
I am a new C 5 owner 2004. I am having a battery problem, it will fully discharge overnight... When I bought the car the dealer had to replace the motor on the passenger seat because it wasn't working .At the same time I had them install a new alarm, back up camera and radio. I had the Alarm shop come to my home because the car alarm siren started sounding off for no reason and I was unable to shut the alarm off or start the car. When they came out they said this happened because the battery in the corvette wasn't strong enough. So I replaced it with a new Interstate 86 series lead battery. It discharged again this this morning. I am also having a problem with the lights on the rearview mirror not shutting off. Could the mirror be shorting out and cause my battery to discharge completely overnight? For some reason I can't get the mirror light to shut off until I shut the car down. Does anyone else have this kind of problem? I would appreciate any feed back. Thanks
Enjoy while you can.
Joined: May 2008
Posts: 18,219
Likes: 3,357
From: 10th District Court OHIO
Ohio Events Coordinator
2025 Corvette of the Year Winner - Unmodified
2024 C2 of the Year Winner - Unmodified
2023 C8 of the Year Finalist - Unmodified
2022 C2 of the Year Finalist - Unmodified
2019 C2 of Year Finalist (stock)
St. Jude Donor '14 thru '26
You came to the right forum to ask, but try here in the C5 section for better responses:
https://www.corvetteforum.com/forums/c5-general-103/
https://www.corvetteforum.com/forums/c5-general-103/
Administrator
Joined: Mar 2001
Posts: 368,075
Likes: 24,732
From: In a parallel universe. Currently own 2014 Stingray Coupe.
C7 of the Year - Modified Finalist 2021
MO Events Coordinator
St. Jude Co-Organizer
St. Jude Donor '03 thru '25
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Moving this to C5 Tech.
Burning Brakes
Joined: Nov 2002
Posts: 1,018
Likes: 52
From: Deltona Fl.
2004
I am a new C 5 owner 2004. I am having a battery problem, it will fully discharge overnight... When I bought the car the dealer had to replace the motor on the passenger seat because it wasn't working .At the same time I had them install a new alarm, back up camera and radio. I had the Alarm shop come to my home because the car alarm siren started sounding off for no reason and I was unable to shut the alarm off or start the car. When they came out they said this happened because the battery in the corvette wasn't strong enough. So I replaced it with a new Interstate 86 series lead battery. It discharged again this this morning. I am also having a problem with the lights on the rearview mirror not shutting off. Could the mirror be shorting out and cause my battery to discharge completely overnight? For some reason I can't get the mirror light to shut off until I shut the car down. Does anyone else have this kind of problem? I would appreciate any feed back. Thanks
Melting Slicks
Joined: Nov 2009
Posts: 2,922
Likes: 219
From: West Branch, MI
Obviously, you're aware that something is draining your battery so you'll need to do some detective work to resolve it. I suggest your read this link, follow the instructions there, then repair what is causing your issue. Aftermarket radios and seat modules are well known for causing battery drain issues so those two are where I'd start. Here's the link - read it and get to know your C5! https://www.corvetteforum.com/forums...post1567522286
Last edited by CactusCat; Oct 22, 2017 at 02:50 PM.
Advanced
Joined: Feb 2016
Posts: 91
Likes: 18
From: Providence RI
Is your alarm wired in to the courtesy lights? The factory keyless remote will turn on the exterior and interior lights when you unlock the car. If the aftermarket system you installed does the same, it may be keeping your interior lights on.
With the car fully shut off, grab your multimeter and check every fuse for current. When you find one that is live, you've found where your power is being consumed. Diagnose the problem in that circuit and you are back in business.
With the car fully shut off, grab your multimeter and check every fuse for current. When you find one that is live, you've found where your power is being consumed. Diagnose the problem in that circuit and you are back in business.
Le Mans Master
Joined: Mar 2004
Posts: 8,700
Likes: 298
From: Ft. Lauderdale Fl
Obviously, you're aware that something is draining your battery so you'll need to do some detective work to resolve it. I suggest your read this link, follow the instructions there, then repair what is causing your issue. Aftermarket radios and seat modules are well known for causing battery drain issues so those two are where I'd start. Here's the link - read it and get to know your C5! https://www.corvetteforum.com/forums...post1567522286
Race Director
Joined: Sep 2004
Posts: 11,874
Likes: 263
From: Arlington Va Current ride 04 vert, previous vettes: 69 vert, 77 resto mod
i recently found out the map lights on the rear view mirror are controlled by fuse 2 in the foot well fuse panel box. if the lights will not turn off you could pull that fuse as a temp stop gap measure.
the low level light in the middle of the rear view mirror is always on if the car is running.
the BCM should turn off the rear view mirror map lights after 15 minutes of inactivity
after market security systems are notorious for causing electrical gremlins
the low level light in the middle of the rear view mirror is always on if the car is running.
the BCM should turn off the rear view mirror map lights after 15 minutes of inactivity
after market security systems are notorious for causing electrical gremlins
Last edited by bobs77vet; Oct 27, 2017 at 11:00 AM.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Melting Slicks
Joined: Sep 2011
Posts: 2,258
Likes: 543
From: Appleton WI
Regarding the mirror lights, are you talking about the map lights or the dim yellow one. If you are talking about the map lights have you tried turning the **** on the dash, left of the steering wheel, that adjusts the brightness of the dash lights? If it is turned all the way to full bright and a little further, the map lights turn on. Might be that simple.
Tech Contributor
Joined: Dec 1999
Posts: 32,910
Likes: 2,402
From: Anthony TX
CI 6,7,8,9,11 Vet
St. Jude Donor '08
Regarding the mirror lights, are you talking about the map lights or the dim yellow one. If you are talking about the map lights have you tried turning the **** on the dash, left of the steering wheel, that adjusts the brightness of the dash lights? If it is turned all the way to full bright and a little further, the map lights turn on. Might be that simple.
Press the button to pop it out and see where the dimmer is set to. Yep,, That will drain a battery in no time flat!
Give that a look and see if that is the case.
With all that EXTRA STUFF you added, something is NOT shutting down when the car is in SLEEP MODE or NOT allowing it to go into sleep mode. You need to do a current draw test to see what your SLEEP CURRENT DRAW is after the 12 min wait period. If its above 15-20 milliamps, you will have to figure out what is drawing the extra current or not allowing the car to go to sleep.
BC