Michael, once you hand over the car for investigation, you normally SIGN a job card authorising the service dept to commence work on your behalf ,, this effectively starts the ball rolling, REED THE SMALL PRINT,,,,,,,,,,,, before signing ,,,, We have established there is NO or very little IN HOUSE trans repair department,,,so when your box is removed,, and striped ,, or sent out to a sub contractor for evaluation ,, the dealer could DECIDE that the defective part is not a warranty item, This leaves you with the bill, because you have already committed yourself by signing the job card,
Fitzy