Hello Eileen, greetings from this side of the Pennines! the cost to the dealer of putting this right is irrelevant, when you deal with them it should be on the understanding that the cost is none of your concern - if they have sold a car to you that is not fit for purpose then you are entitled to a full refund, or for them to put it right. With regard to other problems it may have caused I wouldn't know, but there are plenty of knowledgeable people on the forum who will. If you aren't sure of the legislation and think they might try to hoodwink you have a read up on the Internet, there is loads of consumer help about nowadays. Hope it works put, I had teething problems with my 2003 Rx when I bought it last year but the dealer sorted it.