katabrontes

Codes have been checked numerous times and none found.

Cyprus?

Thanks Colin. Certainly not 'a bit low' as it's a new one and terminals are clean and well greased. I haven't checked voltage at the ECU but as the warning lights sometimes stay on after starting, but at other times they come on while driving when drain is lowest and alternator running so voltage should be at max. My independent garage has checked this several times and nothing found. Never detected any fault codes. Lexus dealer had no ideas. It always clears if the engine is stopped and restarted.

Of course 'the12volt battery 'couldn't be the cause of the lights coming on with my 30 as it doesn't have an auxiliary battery. It's very odd but does seem to matter in my case

I get a similar problem with my RX350 although clearly it doesn't include any battery problem. From time to time, either immediately after starting the engine or while driving, the VSC, brake and ABS light either stay on or light up. Everything works including ABS when I have tested it by sharp braking on grass. No fault codes have ever been detected either by my little dongle or my garages more sophisticated system on a laptop. The lights are always cleared by stopping the engine and restarting. Sometimes it seemed to be related to driving in the rain but not necessarily. Various explanations have been proposed (dirty ABS sensor discs on the brakes, differing tyre pressures (affect the rolling diameter of the wheel so speed of rotation varies thus simulating a skidding wheel)). None of these have been validated. The final conclusion has been that it's caused by some obscure software glitch in the main ECU which resets itself when the engine is switched off and restarted. This has been happening for many years and the car has never failed an MOT. it remains a mystery and I have learned to live with it.

I had a similar dent last year. Local body shop did it for £540.

Take care about opening or closing the roof pending diagnosis of the problem. My 2006 RX350 had its sunroof motor burned out when I bought it. It was traced, after replacing the motor twice, to a broken small plastic part in the mechanism which had jammed the roof and resulted in the operating tape being broken. It took over 30 hours labour to fix it (covered by the dealer's warranty). if your problem indicates and impending similar failure the roof might get stuck open!

Good decision Glover. I feel the same about my 2006 RX350.

When I bought our first Saab about 40 years ago the salesman told me I wouldn't ever want any other car. He was right for a while and we had four more over the next 20+ years. I moved to a big 4x4 Toyota next as I needed more carrying capacity for wine than my elderly 900T could manage without bottoming the rear springs and then to RX350 which I still have after 14 years. Can't think of any reason to move away from a Lexus to replace it but will wait until the theft free generation gets affordable in about 5 years time or I get bullied too much by HMG to hang on to the 350. Best car I have ever had and nothing needed to mend since we had it.

Why not use an independent? Probably closer to home and likely to be cheaper. My last visit to the nearest Lexus dealer when considering upgrading my 2006RX350 to 2020 450h (I didn't and am very pleased) was unimpressive and when I decided not to go through with the deal - because the salesman refused to fit roof rails and thus missed the psychological tipping point which happens in any deal - he became quite offensive. Last time I will visit that one!

This is almost certainly drainage from the AC condenser. I have noted this ever since I first had a car with AC over 25 years ago.

Get a TomTom. Free map updates! Costs less than a Lexus update.

You should be able to get the curtain wire at any ironmongers or a curtain maker etc. I would get at lest 2-3 metres to make sure you have enough to leave some sticking out each end as you might need to pull it in and out while flushing water down the drain to make sure any debris gets cleared out thoroughly.

I would start by clearing the two front sunroof drains. A length of flexible curtain rail - the stretchy spring type uses for net curtains - pushed down the drains from the top. Check what comes out at the bottom end (close to the back of the front wheel arches). There is a rubber valve on the bottom which might be blocked. A good squeeze and wash with water should clear that. Worth clearing the rear drains as well while you are at it. They run through the rear of the boot area at each side behind the inner trim. Same valved outlet at the rear of the wheel arches.

Change the wheels?