Jetta driver dead battery

Something hinky is going on with Jetta battery circuits. My 2013 TDi is sitting in the driveway with dead battery, I have had two jump starts in the week before parking it. I rented another Jetta in Mexico recently--woke up to a dead battery one morning in La Paz, got blamed by the rental agency (Cactus, at Cabo airport) and had to buy a battery which wasn't reimbursed. The battery guy who sold me the new one said VW puts 1-year and 2-year batteries in their new cars. The web (and hemisphere!) is chock-a-block full of people trying to find the cause of their dead Jetta batteries--suspects are the radio, a short in the automatic door locks, probably a lot of other things like, in your case, apparently lights. All I know is, since it died at home this time, I disconnected the battery and tried to charge it overnight. The green eye was dark. Charging topped up at 12.5 and started losing charge immediately when I removed the charger. That battery is dead! I'm surprised that it went dead so abruptly, it didn't get weaker over weeks or months, it just went dead three times in a week. I think the problem is a drain, probably a intermittent short, that does the battery in quickly when it gets jiggled and shorts out. After charging I immediately wanted to start it (before it went dead). Having had two jumps this week it seems it can run with a dead battery, so I don't think the charging system is bad. As soon as I connected the battery to the engine cables, I could hear a click down low between engine and firewall. I put my ammeter between the (+) cable and battery-- it was drawing 2 Amps with EVERYTHING OFF. Battery was dead again in matter of minutes. It was far to weak to start the car. I think the click I heard was a solenoid, or maybe a relay. My car is keyless locks/ignition and depends on power for steering lock. It is pointed the wrong way in my driveway to be towed (pointed nose in) and the manual says do not tow with rear wheels lifted. I am trying to return this car to the dealer on the buy-back program, they say it must be in running conditions when they buy it back. In so may ways I love this car. But having this problem and seeing people describing the same basic problem here, going back 16 years!! tells me Volkswagen has its head wedged, they are rather badly gouging their loyal customers with expensive and inconvenient troubleshooting in each case, instead of fixing the bad design that is causing it.