johnatg

For 'Business owners' the service interval is 12.5K miles and the diff oil change is recommended at Full service - 25K miles. For private owners, the service interval is as you say 10K miles and the full service, including diff oil change, at 20K. But even I, a stickler for frequent servicing/oil changes think that is a bit excessive!

Originals are stainless. Lever against the silencers to remove. Be brutal to clean them up - eg use stainless pan scrubs. They do come clean! Sent from my PSP7551DUO using Tapatalk

Yes. Recommended at 25K miles.

Yes it is an issue. The car would not pass an MoT test with the light on - ergo it is unroadworthy and it would be illegal for the dealer to sell it to you until it has been fixed. Don't worry about carbon build up - it's a minor issue in UK - just use top quality petrol and oil.

Spark plugs are due at 60K, so about 100k for you, but as Piers said they are actually probably perfectly OK - they should last 80-100K miles.. The ancillary belt/auxiliary belt/water pump belt are all the same thing. They last for ever (almost) and certainly don't need doing every year. Changing the belt is one of the easiest jobs ever on a car. Takes 5 minutes once you've got the trim panels off. Good idea to change the water pump - no reason why it should have been done, although they do fail at your sort of age/mileage - I sold my 2006 IS250 last autumn at similar mileage to yours - it was on it's original pump. Good idea to change the transmission oil - get a dealer or an auto transmission specialist to do it.. I'd agree that the most important job right now is the brake caliper sliders - don't get a dealer to do them - they'll want to sell you new calipers. May well be worth getting the aircon recharged - plenty of specialists in aircon will do the job.. Enjoy the car - you'll get hooked on Lexus - I am!

There's an arch liner (or should be) but there's unlined metal before you reach it. Best to clean the nud off the metal - use something like an old credit card to avoid damaging paint.

That 6.5L is largely irrelevant once the car is in service. That's because it's the capacity of a dry engine and you never have that. Some oil always remains in the engine when you drain it. You should always fill an engine (or gearbox) with about a litre or so less than the stated capacity, then top up gradually to the exact measure on the dipstick. Many manufacturers recommend that you don't worry about getting to the max level - it should ideally be just anywhere between the max and min marks. That's because of the danger to the cats (as mentioned above) if the high level is exceeded

Unfortunately aircon gas tends to leak if the system is not used - because it is purposefully switched off in the mistaken beliefs that it is not needed during the winter or that it increases fuel consumption - or as now, due to long term non-use of the car at all. It is a legal requirement that aircon systems be checked for leaks during the regas process - the old gas is pumped out, then the system is filled with nitrogen and checked for pressure loss, then the nitrogen is removed and the system refilled with the specified amount of R134a. (Or as James said, a leak detector can be used) Sadly, cowboy operators often miss the pressure check part. One cause of aircon systems not working is because they are frequently overfilled at the factory - they just hook up the gas source and open the valve for a sort-of-known time - my IS250 had nearly twice the amount of gas it should have had when it stopped working. I have heard of vehicles even more overfilled than that. So I would say - get it refilled properly, including the pressure check and make sure the operator knows how much gas is required for the refill. And use the aircon on at least a weekly basis - in fact keep it on permanently. (when the car is running).

Since these cars have GPS, what a shame that they use the ordinary speedo drive for the HUD speed display, rather than GPS. The analogue speedo and HUD read a couple of mph slow at 30 mph and no doubt similar inaccuracies higher speeds. I have an aftermarket GPS HUD speedometer in my '92 MX-5. It is dead accurate - or at least reads exactly the same as other GPS devices (TomTom, phone etc) and roadside speed indicators. It's switchable between MPH and KPH as well. (As is the Lexus one, but still inaccurate)

Quite a few different ones come up with very similar descriptions when I search Amazon for that, but they all look pretty similar under the skin. I guess it will do the job as a smart charger - but are you sure you'll be getting it today? They all look to have rather long delivery times! You could probably find a local garage to charge the battery for you in the meantime, if you can get the battery to them.

PS - if you are getting a standard (non-smart) charger, take the battery to someone who can test it for you - maybe there is a local garage with a battery tester open, or most car accessory shops will do it for free, but I guess they are still closed.

Have you ordered a smart charger such as Cetek? Whatever, don't try and charge with the ignition on - for one thing, you shouldn't have the ignition on for long periods without the engine running (it can damage the ignition electronics) and for another it will just take longer to charge the battery. A smart charger should tell you if the battery is retrievable - if it is, just follow the charging instructions. If it isn't buy a new battery and drive the car a few miles at least once a week

12v. It switches on the computers and they can react in odd ways with low volts. Sent from my PSP7551DUO using Tapatalk

P0100 is caused by a MAF circuit malfunction. P0010 is a timing issue - between crankshaft and Bank 1 camshaft. They may well be glitches caused by a low battery, as mentioned. I'd suggest you clear them (you should be able to do that with the tool you used to read the codes), then see if they have returned after a few days.

I hadn't seen the episode before - I guess it might be unfair to judge the programme from here - it was recorded 14 years ago - but why, oh why do they have to mess with the cars they are so-called restoring - fitting tacky wheels and gadgets for example - in other episodes Brewer complains about such things fitted to the cars he buys. I make a point of looking up the subsequent MoT history of the cars featured. You would think that the restoration would get the car to a point where it got a clean MoT but no (and it's typical). It did pass in 2006 but with advisories and was clean in 2007. Next MoT was a failure in 2009, with a pass with advisories a month later. And that was it - no more MoT history. And that's pretty typical of WDs cars - they go to a sector of the motoring public who buy a cheap car, spend absolutely nothing on it - not even an oil change - then chuck it away. This LS400 did apparently cover some miles before the chuck away, although the MoT in 2007 said 'no odometer'. Strange! Very often the car featured in the prog does about 3000 miles in about 3-4 years subsequently then disappears. Hardly worth all Edd's efforts! Usually (with exceptions) the 'enthusiast's mint car' doesn't fare much better, either! PS - one lesson (already well known here) from the LS400 - cheap replacement suspension parts are a waste of money - the new upper suspension arms Edd fitted were the subject of advisories, maybe even the MoT failure, by 2009!

It's on Quest - channel 12 - at least where I live (Cheshire) Sent from my PSP7551DUO using Tapatalk

Late 2014. There was some rearrangement of menus - nothing very significant, but I don't use the sat nav much anyway - I generally know where I'm going! For when I do use it I want the maps to be as up-to-date as possible. The update was in two phases - it said it was updating the software, then rather worryingly the screen went black for half a minute or so then came back and it said it was updating the mapping. I posted full details of exactly how to do the update on here somewhere.

I updated mine with the May 2019 version. It updated the software as well as the maps.

Yes - it should be an AGM battery. The original was a Panasonic, which you are unlikely to find in UK. I'd be looking at a Yuasa YBX9027 (but check for yourself that this would be correct,.) Other brands are available.

Mine just comes up with the map on switch-on. Don't know what I did to achieve that - I did update to the latest May 2019 version recently, but I think it did it before.

I don't wish to be pedantic but just for the record Lexus (and Toyota hybrids in general) don't use Lithium batteries - they have NiMH (Nickel Metal Hydride) batteries. That technology is a bit dated now, but Toyota made it work well and they've stuck with it. NiMH cells have an alkaline electrolyte, usually potassium hydroxide. The positive electrode is nickel hydroxide, and the negative electrode is hydrogen in the form of an interstitial metal hydride. But Lexus have switched to Lithium Ion batteries for the new Lexus UX 300e - the first all-electric one.

I shouldn't have forgotten that - my chauffeured executive grandkids drive me bananas with it! Sent from my PSP7551DUO using Tapatalk

Don't know about the GS450h ones but on the IS250 the official way was to just hit them with a hammer from behind, but there was no space to swing so the easiest way was to lever against the silencers with a crowbar or similar. There were no clamps, just claws. They are probably stainless steel - you can clean them up and repolish with a lot of patience.

Climate control, heated seats and radio - well, you wouldn't want to leave your ambience up to the chauffeur, would you? (Quick reality check - this is the Lexus GS forum - you haven't wandered into the Bentley forum! 😊) (The controls are a feature of Gen 4 GS models)

The value of a cat isn't to reuse it - it depends on the amount of precious metals it contains - eg Rhodium and Palladium. Earler hybrids (eg original Prius models) had more precious metals than they do now. The cat on a Prius is particularly easy to cut off as it is on SUV hybrids. It's rather harder on a GS but not impossible and of course you get several for the price of one on a GS450h (how many cats do they have?). So far we haven't seen reports on here of cats being stolen but it might be just a matter of time.