Civic Rebirth Draining battery Overnight

nehal_khan (Nehal) 2023-09-03 17:41:05 +0500 #1

Hello everyone.. i hope you’re fine…
I’m facing a problem in my Civic 9th generation (rebirth) 2012 model….
Whenever i wake up in the morning, the car doesnt start up which means it drains battery overnight…
I went to a battery shop to check if my battery is fine, they said to remove the battery wire before parking it for the night… And then check it in the morning by plugging the terminal back in.. I did that & the car was all fine and did not drain its battery that night when its terminal was removed..
Which means the battery is fine..
So i want to ask what can be other possible causes ? And how can i fix this issue? (Also keep in mind, 3 days ago my AC suddenly stopped working so i went to AC repair shop and he changed an AC Rely / fuse .. ) which i think can be the culprit
I live in Peshawar, so if you can recommend any mechanic / electrician for that. I’ll appreciate that

aziz.rehan (Rehan Aziz) 2023-09-04 01:11:00 +0500 #2

The ac relay u installed could be short which might turn ur compressor clutch on at night which resulted in battery drain. Change the relay and see if problem goes away.

nehal_khan (Nehal) 2023-09-04 02:48:49 +0500 #3

Yes will do that tomorrow

pwuser15609321293 (PWUser156093212966) 2023-09-04 14:33:44 +0500 #4

That ac relay is getting the current directly from battery even if the switch is off? Great catch by the way

aziz.rehan (Rehan Aziz) 2023-09-04 17:22:18 +0500 #5

A short relay can do that. As replacing a relay is cheap, so it's worth a shot.