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Thanks for the responses. Your solution sounds like a cracking piece of engineering! What causes it to just suddenly start happening? It might have starting making noises since it's last service but I wouldn't put money on it. It's still under warranty, I'd assume from your response that lexus think it's not a problem so they won't address it?

Hi All, My 07 GS450H has recently developed a noisy/rattly engine on startup for the first few seconds of start when starting from cold. It's as if the oil hasn't yet got to those parts yet making the noise, it soon goes and then purrs. Oil level is fine. Any ideas, timing chain? Tappets? Is this common on a car with 120k miles?

I looked at this. Nippon Autospares in Derby were the best price at the time. Give them a ring to make sure they are the actual part you need and are brand new though, this was double checked by me at the time but there was some scepticism over the prices they were quoting. Also, they can better their ebay price buying direct. Good luck!

Quick question. I have always assumed the sport and PWR switch just change the throttle sensitivity (as well as damper adjustment for sport). Is that correct, or is there also some adjustment to the electric drivetrain to put in some more power?

Thanks for the info. It is interesting. People would be put off buying a GS new because of the perception of poor residuals (which Lexus did have previously when compared to the Germans) now the residuals seem amazing! 40-50% after 5 years + 50k miles!

You're right, the GS450H did cost more new than 535d/E350, hence my comparison with a similar 6-series which was £60k+ new. I think the differences must be explained with the numbers available. Thanks for the links, the GS250 doesn't appeal, neither does a newer version of my current car. I may just decide keep my current car and run it to the ground but thought the high residuals of the current GS450H were worthy of forum comment! I also wanted to see if the dealers were offering heavy discounts off the ticket price on used GS450Hs.

I fully agree diesels aren't brilliant vs a nice 6-cyl petrol hybrid, but the diesel does come with a proper gearbox... http://usedcars.bmw.co.uk/vehicle/201710210515309?quoteref=92490834-6203-45ed-98a9-08c2dff1b72b http://usedcars.lexus.co.uk/en/used-lexus/Lexus/GS-450h/35-F-Sport-Mark-Levinson-r1bkzuw I suppose the point I'm making is I bought my 07 GS450H after looking at similarly priced 530d and E350Ds, the Lexus was far better value for money. Cheaper, less miles, newer. Now if I do the comparison I'm really struggling to justify the lexus!

I use my GS450H for work only. I opt out the co. car scheme, spend the majority of the money on the family car and run the GS450H for work only miles. I am considering selling the GS450H early next year and was looking at getting a 2012+ model. But I'm put off by the cost! An equivalent 5-series or E-class with a big lump of a diesel offering similar/better mpg, bigger boot etc. is quite a bit cheaper. Granted the GS has more kit/tech but I'm not sure that it justifies the extra. Anyone experience the same? I suppose it might be due to rarity. Are dealers sticking to ticket prices on used GS450H? Anyone bought one recently? It's a similar story on the LS vs 7s. S-Class, A8s etc

Mine were at 100k, wear and tear...

I have the same problem. A touch of "Mother's plastic polish" gets rid of the haze but only for a couple of months.

The water pump should be. The lady at lexus UK told me everything that isn't designed to wear during it's operation on the car is covered. Things designed to wear include brakes, clutch etc. Oh and shock absorbers!!?. Apart from that everything else is covered! That aside, I think you should be fine with a waterpump and if not you should kick up a fuss!

I'm thinking the same as this. My bulbs are very disappointing, I'd say bordering on inadequate (I've had brighter non-xenons). I assume Xenons dim over time? On a 10yr old car with 120k I guess they'll not be operating like newer bulbs? Malachy did you see an improvement in your new bulb? Are they tricky to fit on a GS450H? I replaced parking lights recently and they were a nightmare to fit!

I thought I should reply to with the outcome in case someone else has the same problem and does a forum search. Dealer investigated and found it was a fault due to faulty pins in the door detecting if/when closed etc. They said the cost would be £90 to rectify. It was all done foc under the Lexus used Warranty. I imagine if you didn't have a warranty and could source some pins and it could be done relatively cheaply.

Thanks for the replies. I've been playing around and have come to the same conclusion, the car shouldn't lock with keys in the car (can do in the boot apparently) or auto self-lock once door has been opened. It behaves the same with both keys. It's in the dealers soon so I'll get them to look at it. Not sure they can reject the warranty claim on wear and tear for this! Thanks

Good advice and I won't do it anymore! Although in defence of my stupidity I thought the first incident was just a random coincidence where the button was pushed while key was in car. Now I've seen it happen twice I won't do it again! Saying that, cars can't exist where if you leave the key in it for a very brief period they lock themselves in!?