Maybe due to checking if battery is loose and or battery connections.
Also check of suspension components.

Think this is why a old ford will go on for so long without them picking up corrosion issues due to not being able to poke and prod a body shell.
Hence why you see so many focuses failed on the rear lower sills and inner rear arches.

Even now with rusty brake discs they can only fail if they are poor performance on the rollers and or cracked.