hi martin
I haven't got one but been looking for a while as a replacement for my LS430.
The main faults to look out for are:
1) Leaking shock absorbers - these can start as early as 60k miles and the only replacement as i write is lexus parts.
2) Hybrid problems can start to surface the closer you are 100k - mainly these relate to failing individual cells within the battery - these can be replaced with used ones but will cost you £700 by specialist companies.
3) There has been 2-3 cases of failed transmission pumps - lexus will probably quote for a new gearbox - however a member here " hayne" fixed his for alot less - look fout for warning lights on test drive
4) Seized calipers is another to look out for.
thats all i can think of - when looking take an extended test drive to ensure no warning lights come on. I look on auto trader and other sites every single day and these cars are very slow movers so negotiate.
As you can see the list is small but relative costs are high for example £700 buys alot of fuel
Many member have opted for an extended lexus warranty which costs £995 for 2 years - this also covers the Hybrid Battery.
Lexus will also do hybrid Health check and warranty the battery for 12 months and costs £59
hope this helps
I dont like to follow the crowd and tend to buy unique cars.
A Rover Mini when I was 17 vs the Corsa/Golf/Polo's of the time
MG TF instead of MX5/Toyota MRS
Crossfire instead of 350z etc
Soon an ISF.
Although I honestly think in my case I just want the best BHP:GBP ratio.
Mine has one on each side at the high part of the boot channel on both sides of the car. A plastic piece of trim collects the water and it drains by a tube in the centre of the bottom of each of the trim pieces.
Others on Club Lexus have posted about water in the boot so it's probably worth checking with fellow owners in the US too.
Have you had new rear number plate, attached with sticky tape ?
I've heard of water ingress through holes previously used to attach the number plate. Just a thought....