I agree with 4 and believe a second opinion from a mechanic that you trust is in order. The repairs described have nothing to do with the EV components and can be performed by any qualified repair shop. $4K for repairs is a dealer trick to motivate a trade in with purchase of a new car in my experience! The KIA dealer once told me it was $4k to repair my Optima brakes but offered a generous (ha) offer of $1k for a trade in. Took it to the Ford dealer and got $3.9K trade in for purchase of a used Fusion Energi with 10k mi!
Stephen
Stephen