Battery Keeps Going Dead
Thread Starter
Instructor
Joined: Dec 2006
Posts: 104
Likes: 0
Battery Keeps Going Dead
Got a 2002 convertible, battery keeps going dead, replaced the battery with a new one same problem. Think i have a bad relay have checked and everything in the car appears to be off.
Any suggestions of frequent relays that mess up, which I could check or possible switches that I do not think have been left on?
Any help would be appreciated. Last month of good weather in NJ and want to enjoy the car before I have to put it away for winter.
Any suggestions of frequent relays that mess up, which I could check or possible switches that I do not think have been left on?
Any help would be appreciated. Last month of good weather in NJ and want to enjoy the car before I have to put it away for winter.
Drifting
Joined: Jun 2013
Posts: 1,965
Likes: 343
From: Shell Point (Crawfordville) Florida
A few possibilities-
What kind of battery did you get to replace the dead one(s)?
Did you charge up your old and the new replacement battery and get them load tested to see if they were really dead, or do you have a parasitic current draw that is draining them?
Is your charging system working - ie, what battery voltage does your DIC read when the engine is running?
To see if you have a current draw when the car is "off", disconnect the negative battery lead and with a ammeter connected to the negative battery terminal and to the ground lead, see if there is any current flowing. If there is, to find it you may have to pull each fuse one at a time to see which circuit is pulling juice out of the battery.
What kind of battery did you get to replace the dead one(s)?
Did you charge up your old and the new replacement battery and get them load tested to see if they were really dead, or do you have a parasitic current draw that is draining them?
Is your charging system working - ie, what battery voltage does your DIC read when the engine is running?
To see if you have a current draw when the car is "off", disconnect the negative battery lead and with a ammeter connected to the negative battery terminal and to the ground lead, see if there is any current flowing. If there is, to find it you may have to pull each fuse one at a time to see which circuit is pulling juice out of the battery.
Le Mans Master
Joined: Nov 2006
Posts: 7,215
Likes: 1
From: Orlando FL
There are several good threads on here about this. The car has to go into hibernation if not it will kill the battery. The threads explain in detail how to check the amp draw on the car and then isolate the issue.
do a search and you will find it.
do a search and you will find it.
Administrator
Joined: Mar 2001
Posts: 368,324
Likes: 24,777
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 '26
NCM Sinkhole Donor
CI 5, 8 & 11 Veteran
Here's a good thread on C5 electrical information:
http://forums.corvetteforum.com/c5-t...tion-long.html
If all else fails, get in touch with forum member Bill Curlee - he is very knowledgeable on the C5 electronics and can most likely give you some suggested areas to check.
http://forums.corvetteforum.com/c5-t...tion-long.html
If all else fails, get in touch with forum member Bill Curlee - he is very knowledgeable on the C5 electronics and can most likely give you some suggested areas to check.
Melting Slicks
Joined: Mar 2007
Posts: 2,602
Likes: 38
From: Westchester County, NY
These guys know more than I do but I just resolved the same problem on my 04. My battery, alternator and starter checked out fine. After testing, it was the driver's seat power module.
Racer
Joined: Nov 2005
Posts: 272
Likes: 13
From: Sarasota, FL
Same thing happened to me...i just went to the garage one night and in comlete darkeness started pulling fuses...when you put them back in, if one arcs it's pulling juice. Mine ended up being drivers side power seat, replaced the part and have had no issues since!
2nd Gear
Joined: Dec 2022
Posts: 2
Likes: 0
Got a 2002 convertible, battery keeps going dead, replaced the battery with a new one same problem. Think i have a bad relay have checked and everything in the car appears to be off.
Any suggestions of frequent relays that mess up, which I could check or possible switches that I do not think have been left on?
Any help would be appreciated. Last month of good weather in NJ and want to enjoy the car before I have to put it away for winter.
Any suggestions of frequent relays that mess up, which I could check or possible switches that I do not think have been left on?
Any help would be appreciated. Last month of good weather in NJ and want to enjoy the car before I have to put it away for winter.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
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
Moderator, Tech Contributor
Joined: Sep 2013
Posts: 15,600
Likes: 4,059
From: Cape Coral, Florida
Hi did you resolve your problem? I am having a similar issue. Just bought a 2000 c5 Corvette Coupe the Sunday before Christmas and the battery keeps dying yet I see the battery is only 4 months old and when AAA came to jump the car I had them check the alternator and it's not the alternator so something is draining the battery. I hope yours is working fine now.
Race Director
Joined: Oct 2004
Posts: 12,864
Likes: 4,667
Hi did you resolve your problem? I am having a similar issue. Just bought a 2000 c5 Corvette Coupe the Sunday before Christmas and the battery keeps dying yet I see the battery is only 4 months old and when AAA came to jump the car I had them check the alternator and it's not the alternator so something is draining the battery. I hope yours is working fine now.
