Water in Backseat
Asked by Jed Aug 08, 2019 at 05:08 PM about the 2004 Pontiac Bonneville SLE
Question type: Maintenance & Repair
Just bought a 2004 Pontiac Bonneville SLE and I noticed
that the battery under the back seat, was almost 1/4
submerged in water! I was shocked because I had just
driven it but all the electronics and lights were functional.
Im taking it to a mechanic tonight but was wondering if
anybody whose had this experience could offer any
suggestions! Thanks!
3 Answers
You have a leak that allows rain water to enter the battery compartment and collect. It won't affect your "electronics" or lights until the water reaches the top of the battery and causes a short between the terminals. First thing to do is to get the water out. Then do some detective work to determine where it is getting in. Could be a rusted section of the battery box, could be a bad seal/cover on the compartment, but you can probably find it. When you do its location and size will determine how to progress with a fix.
JimBob2019 answered 4 years ago
Use car wash to see if you can replicate the water getting in. if successful get in on a monthly membership car wash program. tape off area and go through as much as needed while peeling away at the tape. You'll find the leak eventually.
AlmightyDorn answered about a year ago
Have you ever figured out what the issue was? I currently own a 02’ BonneVille and I’m having the same issue with water in the battery base area, at first was scared it was acid and I had just purchased a soon to be doomed car, but with research I learned it is indeed not acid, but water getting in some how. Have you had any solutions?
