So I'm faced with quite a dilemma. 2013 Model S 60 in excellent shape EXCEPT it showed a warning on the dash. "car needs service, may not restart." I set up an appointment and the estimate came back just over 14k! Went to the dealer today to have it explained. I was told it was diagnosed with a short in the main battery (they can diagnose it without me taking it in, go figure). The rebuilt battery comes with a transferrable 4 year 50k mile warranty. Asked about a trade in on a new Model 3. Dealer will only give me 7.5k. Car has MCU 2 and a replaced drive unit in 2018. So I replace the battery and drive it for a couple more years or cut bait and take my losses. What would you do??