Dead Car -Electrical Problem?!

[daxwert]

Hi All,
Been going through this forum and NAM for the last 24 hours.
Am currently doing some work on my car. It has been parked for about 3 weeks now while the rims 've been in for repair. None of the work done to car is electrical.
Anyway. Two days ago I wanted to start the car. Have been doing it intermittedly every 2-3 days while the car was standing.
Car didnt start. Battery voltage too low. Tried Jumpstarting it. Nothing happened. Disconnected the battery to put in another battery(which I had just professionally serviced for another car) to start it with.
Now I absolutely dont get anything. Dash stays off and no lights go on anywhere. Cant even open the car via remote.
Presume my jumpstart attempt did something. Checked all fuses and swapt relays around but no luck.
Any Idea of what it could be? Any advice is appreciated.

PS: How do I open the trunk in an situation like this?

PPS: My Battery is only 3 months old and had it checked yesterday. Its in very good condition. So we can exclude that.

[Oldpaint]

Interesting problem. Back in the good old days, you'd suspect a bad cable or ground, but with modern cars could be any number of things. I'm not an expert with that but to get at the trunk there is an emergency handle under the rear seat. Lift up the seat to find it.

[daxwert]

Quote: Originally Posted by oldpaint (original)

i'm not an expert with that but to get at the trunk there is an emergency handle under the rear seat. Lift up the seat to find it.

thanks

[daxwert]

It appears it was a bad ground.
Checked the whole car again and am greatly relieved.