I recently had a problem with a plastic insert that hadn't been finished properly and had no hole through it. We ended up using it without even looking to check. Phone call from customer and a LONG letter of complaint and although I didn't get compensation I was sent over £300 of free fittings.
The manufacturer did of course say it wasn't their responsibility but was a goodwill gesture.
Regarding the manufacturer not taking liability I did tell them I was prepared to engage a solicitor and contact Trading Standards.
As far as I'm concerned they are responsible for faulty fittings, whether they've left the factory or not, I'd like to see Toyota's solicitor in court telling a judge the dead people aren't our fault......the brakes aren't our responsibility once they leave the factory........They are if they're defective and not fit for purpose.