it may be worth speaking to the dealer again and asking for written confirmation from lex gb as to the warranty position .as you will have read,my dealer quoted five years.
I spoke to various people at the dealer and at their bodyshop, and they all said mine is the first car they had seen with this problem, which I find unbelievable. I then phoned Lexus GB and got the same response. They had never heard of this problem before, and the warranty had definitely not been extended to five years. I will phone again and ask for written confirmation. It would be helpful if you could tell me which dealer you used, so at least I can get my car fixed. Thanks