Mom dukes Civic won't start.

• No power at all- key fobs don't unlock doors, lights don't go on, no chimes, no aux, nothing.
• Tried to jump - no luck. Battery tested good.
• Plucked out the two large fuses in the bay. They're fine. Pulled every 5, 10, 15, and 20 A fuse under the hood and under the dash - all fine
• Replaced key fob battery, but figured that wouldn't help.

What should I try next? The car is in good shape. Low miles (<25k), always taken care of.

Is there a magical relay that will solve my problem? How are relays easily tested without a volt meter? Could it be anti-theft somehow?

I've never had a car that wouldn't start lose power completely and I've never had a push button start- so I'm used to hearing the starter click, or hearing it try to turn over.

Thanks in advance

 

Main bus fuse or damage to either the positive or negative battery cables.

 

First thing to do is to check the terminal of the battery
Then to clean out the terminal and grounding strap
Make sure the chassis ground is okay.