Sure that saved you a whole lot of money, thank goodness for that wise old man and the scan tool ;)
During lockdown our car wouldn't start one morning and hubby who also used to work on our cars before they were computerized, was convinced it was something that he couldn't fix. I stood there wondering if we should try the spare key but thought it's a silly suggestion so kept quiet.
The workshop owner did a house call and after looking at a couple of things, told hubby to try the spare key; low and behold that was the problem after all!
We're fortunate to have an honest mechanic who we've supported for years and who's often helped us out when we've been stranded!
But that wise old man was right, 'things aren't always what they appear to be' especially nowadays!