SiBro

thanks. do you know what is rattling, which part?

Thanks for your input, and although i cant say what oil was used, the car had a full service in august, the oil colour looks like new, done less than 1k since service, i can say however, that i was able to contact a previous owner (1 before last) who confirmed to me that when he purchased the car in January 2016, he to had the same problem & basically rejected the car and got a full refund, so 1) the problem has been there since, at least Jan 16 & 2) the car was sold to me with the fault present, which gives me more ammunition against the dealer.

Thanks for the advice, i guessed there would not be a code :( , as I've had the car less than 30 days, i'm considering rejecting the car, i have been in contact with the dealer, who, even though is a member of the the motor ombudsman scheme, is not being that helpful. Basically, is the timing chain likely to snap if driven? also, how has anyone here with the same problem had it diagnosed, i assume it has not been stripped down to diagnose? Thanks in advance. :)

I've recently purchased (dealer) a 2008 IS250 SE MM, I've only had it 3 weeks, it has F/S/H, all but two done at Lexus, after hearing the dreaded rattle on start up, which happens intermittently, i researched this and found that this is a relatively common problem so it seems. I've read several threads on this subject, but there is a few questions i hope can be answered here. Has anyone had a fault code for this (when plugged in), or is it just, hear the noise and diagnose it? Also how serious is this long term, i know its a big job to replace the cam gears 12/13 hrs labor + parts, which i believe are not cheap, is anyone just living with the problem, or is it a job that needs doing once the rattle starts? https://www.youtube.com/watch?v=-CdvBMdG2wc