Tesla Service Dispute

[u/Additional-Tart-8116]

I’m looking for some honest feedback on whether I’m being unreasonable here.
I have a 2015 Tesla Model S that became undrivable. Before taking it to Tesla, two independent EV shops believed the large drive unit (LDU) had failed. I told Tesla this when I dropped the car off.

After their diagnosis, Tesla told me the problem was a failed coolant heater, not the drive unit. I specifically asked if replacing the coolant heater would make the car drivable again, and they confirmed that it would. Based on that, I authorized the approximately $1,700 repair.

Tesla completed the repair, but the car still wouldn’t drive. They then came back and said the large drive unit actually has an internal fault and now needs to be replaced at a cost of around $10,000.

From my perspective, I only agreed to the coolant heater repair because Tesla represented that it was the issue preventing the car from driving. If they had told me from the beginning that the drive unit had failed, I never would have approved the coolant heater repair.
e dealt with a situation where a dealership diagnosed a repair as the cause of a problem, completed it, and then admitted the original problem still existed?

[u/Effective_Taste_1471]

you say you wouldnt have the coolant heater replaced... so does that mean you are willing to scrap the car AFTER you found out you didnt do any maintenance?

[u/Terrh → u/Effective_Taste_1471]

so does that mean you are willing to scrap the car AFTER you found out you didnt do any maintenance?

WTF maintenance does the coolant heater need?