Given our experience, and the experience of thousands of owners in the US, of the attitude of Lexus Toyota to potentially lethal Brake Failure problems on their vehicles, it does not surprise me that you are having arguments with your Lexus Dealer over this Brake Failure problem. It is clear from the experience of others that the corporate (Toyota Motor Corporation) response to Brake Failures is to immediately claim that there are no Brake Failures - on any vehicle at any time! This is exactly what the Toyota Motor Corporation did to owners in the United States - and is exactly the reason that the Toyota Motor Corporation is being sued by thousands of owners in the US.
I reported a Brake Failure to the Lexus Dealer - who immediately told me there were no problems with Brakes - via email !!! without having even inspected the vehicle first !!!
Regarding the statement (fobbing off) you received from Lexus GB ("it was not there problem as I had bought the car from a dealer") - is your car under a finance agreement? If it is, then the vehicle - and its faulty brakes and/or hybrid system - is the responsibility of the Finance Company (e.g. Lexus Financial Services, Toyota Financial Services (UK) plc)
Your conclusion is absolutely correct - Toyota Lexus are simply - and cynically - ignoring serious faults on their vehicles - including potentially lethal Brake Failures - and doing so for financial reasons - and ignoring driver/passenger/other road user/pedestrian safety.
As with you, we shall NEVER buy another Lexus - or Toyota - and are absolutely disgusted at the response from Lexus - Lexus Financial Services - Toyota Financial Services (UK) PLC - Toyota Motor Corporation.
We have a Lexus Purchase Plan on the RX400h - and Lexus Financial Services have been absolutely negligent in dealing with our case and simply ignore their legal obligation with respect to the faulty Lexus RX400h with a Brake Failure.
Lexus Financial Services have attempted to impose on us a condition not included in the original contract - obviously a condition to our detriment - and have attempted to make us liable for any shortfall in the resale of the vehicle!
Lexus Financial Services - Toyota Financial Services (UK) PLC - have refused to provide a remedy to the Brake Failure - and along with the Dealers - have merely insisted that we drive a vehicle with a potentially lethal Brake Failure on the highway.
Naturally, we have refused to do so......but Lexus Toyota simply ignore the potential hazard of a Brake Failure in order that they do not lose money!!!
Lexus Financial Services - Toyota Financial Services (UK) PLC - have even stated that even if they admit there is a Brake Failure problem even then they claim they are not liable - because the problem did not exist when the vehicle was driven out of the showroom!!!! This is the level of dishonest - and unlawful - business practices that Lexus Financial Services - Toyota Financial Services (UK) PLC - are engaging in!