Sitting in the driver’s seat, with no key in the ignition drains the battery

Does this vehicle have Heated Seats?

no

With no key in the ignition do you see any warning lights on or flashing on the dash.? Any overhead lights or headlights on?

no

Special equipment is needed to correctly find the root cause of this issue. Suggestion..Charge the battery. Invest in a cheap Digital Volt Meter. 10 to 20 bucks at Wal- Mart. Get back to us for further directions.

Thanks for your response Tony. Sorry I haven't been prompt in my replies, been busy installing cable and Ethernet for Spectrum internet. I have a multimeter, not very proficient with it, but with some help I can figure it out. I have tested for a short on my Ranger and found it, but I’m not sure where to start on the Camry. Would appreciate any advice you can provide.

The diagnosis starts with placing the volt meter across the battery terminals. Keys in your pocket...all doors and windows closed. Dc volts should read 12.3 to 12.6 volts. Get back with results

Reading 12.6 volts

Ok....that reading suggests the battery is fully charged. Now comes the details. We need to have one person watching that volt meter attached to the battery.... a nd. Another person to systemically enter the vehicle. So...while someone watches the meter...the other person ....using the key fob....unlocks the doors. What happened to the reading on the volt meter? Next....open the driver side door....what changed at the volt meter? Next....sit on the driver seat and wait. What changes are noted at the volt meter. Wright all these voltage readings down. Your concern is that the battery now goes dead..?? Well...a weak or dead battery will show a voltage less than 12.00 volts. How long will you have to sit there to achieve that voltage? If the voltage remains at 12v or higher....your problem or concern is elsewhere. Get back with results.

Tony, thank you so much for your help. I did a battery drain test the last couple of days, and unfortunately I was not able to recreate the battery drain. On the day of initial dead battery I did look under the seat and checked the wires for anything obvious, perhaps I moved the problem wire at that time. I was able to connect the multi meter and rest it on the windshield so I could watch for voltage changes. I tried various situations. Initial door unlocking, sitting in the seat in various positions for several minutes, powered door locks on and off, seat belt on and off, headlights on and off, dome lights on and off, powering the windows up and down etc. I could hear the timer relays shut off for the various components that stay on after initial entry and watch the voltage climb back up. I never got a drain lower than 12.3 (headlights) mostly any drain was down to 12.4 then back to 12.6. One last test I need to try is moving the seat around so more, I tried it a little bit with no obvious result. Other possibilities I’m thinking about is perhaps the ignition switch might have a problem, or the airbag sensor? It’s like looking for a needle in a haystack, so many possibilities. At this point I’ll keep doing some more testing and see what happens. Thanks again for all your advice.

Consider this.

Good way to keep an eye on your battery status

I like it!