ColinBarber

That sounds like the shorten printed manual, not the near 700 page full manual available online.

It should be in three locations: It's also possibly under a cover under the drivers seat (extend it all the way back to see it) but not sure if its there on the IS. It should also be written in your service history book. It will start with the letters JT due to it being manufactured in Japan by Toyota.

It's a nice feature, but pretty standard across the industry. Audi, VW, Volvo, Tesla, Land Rover, Honda, Mazda, MB, BMW, Kia and probably a dozen more all have this.

No guarantee of that though. FLSH GS F owners with interior carbon fibre trim delaminating, which each piece costing several hundred £ each to replace. Lexus GB response - you're cleaning it wrong, sorry extended warranty doesn't cover trim.

Yes, it certainly looks the same as the one used on the GS F and RC F. The problem is that the part isn't available on its own - there is no part code.

The Supra ones are also used on the Lexus SC430 5-speed (and GS430/LS430), which was sold until 2005 so hopefully the parts are still available. On the 6-speed SC430 they switched to the same situation as the IS-F, only supplied fitted to the whole prop. Not sure why they did this, maybe they balance the entire prop with the couplings attached.

Do you have the PCS/Adaptive Cruise Control option? The radar sits behind the emblem and may not work correctly if you replace the standard one.

Correct. If you didn't actual drive on the tyre with no pressure then in theory it could be safely repaired, but to a repairer that is impossible to tell so they just won't do it.

Bank 1 is always the bank that contains cylinder 1. On the IS250 that is the left of the engine (when standing at the front of the vehicle looking at the engine bay (drivers side for a RHD car)). Given that you also have an idle issue it points more towards the problem being fuel/air related rather than the exhaust, and because you also don't have a P0430 error it seems to be just on one bank so unlikely to be an item common to both banks such as air filter/MAF/intake air leak etc. Therefore Bank 1 Air/Fuel Ratio (O2) sensor is most likely but you should ideal check/test it rather than just swapping it out as it could be a fuel injector or some other item.

Two things normally cause this, either a small leak in the exhaust or a faulty O2 sensor - not the sensor reporting the fault but the upstream sensor. It could be something else like the MAF sensor, or actual a Cat but normally its exhaust or one of the two upstream O2 sensors.

I'm not surprised by the response to Geoff for his NX but I am for your RX - Lexus commissioned and sell a Catloc for the series III RX now so there must be some perceived risk for them to have done that.

It was but there's nothing really special about them. It's a sport with the aero pack painted in yellow. Get a standard sport and wrap it if you want that colour.

If that is the case, and it suggests you couldn't operate your hazard lights for more than 30 minutes which is a dangerous situation, then your battery has severely lost some of its capacity, probably by being deep cycled on multiple occasions.

As others have stated, it's almost certainly the parking brake. Just operate it manually to satisfy yourself that is what it is.

Passing an MOT isn't the full story. You could still move the CO2 tax bracket to drop a EURO emissions level by making modifications that aren't tested on an MOT. The law Under the Road Vehicles (Construction and Use) Regulations (Regulations 61(7) and 61A(3)) and the Road Traffic Act 1988 (Section 42) it is an offence to use on a road a vehicle which has been modified in such a way that it no longer complies with the air pollutant emissions standards it was designed to meet. The potential penalties are £1,000 for a car and £2,500 for a van, lorry or bus. Under the Road Traffic Act 1988 (Section 75) it is an offence to alter a vehicle in such a way that the use of the vehicle on a road would be unlawful. A person altering the vehicle (if they knew or believed that the vehicle would be used on the road) could be found guilty of an offence under the Act. Potential penalties are unlimited fines.

Not sure if it was the same time as the RC F (Nov 2017 built) or slightly later. If is definitely fitted now though as the power was reduced from the launch 477 PS figure down to around 460 PS and the engine is Euro 6d compliant, rather than just Euro 6 at launch. Will try and find the actual date.

It's been done at a Toyota European level. Not sure Lexus in GB (which is just a couple of desk in Toyota GB offices) can do much, although it obviously been spun as a positive for the customer. Toyota owners are the ones the loose the most as the manufacturers warranty goes from 5 to 3 years.

If it's a Toyota dealer that also has a Lexus franchise then they normally won't do it. Even if they don't I believe their Techstream license won't make Lexus vehicles available and they also risk upsetting Toyota GB which could ultimately lead to a loss of franchise. Lexus charge more than Toyota because it's a higher luxury brand, the vehicle is more expensive and a belief that the owners have more disposable income. Plus the cost of running the dealership is more (building interiors, loan vehicles etc.).

Silicone spray works better than WD40. Some debate over WD40's long term effect on rubber and will attract more dirt than silicone which would cause wear.

Not easily. Using genuine parts that would be extremely expensive to achieve as you have to swap out door/body ECU. That ECU also provides seat memory functionality which may confuse it if it's not there (because your seats won't have the sensors/wiring). There are some third party Chinese made parts that provide that functionality but a quick search for the UX only shows a device suitable for LHD. Might be worth contacting them to see if a RHD version is going to be available. https://www.aliexpress.com/item/4000790209111.html?spm=a2g0o.productlist.0.0.ab773617mEtilM&algo_pvid=84fa067e-b888-4243-b9e4-a0f1204c7e3b&algo_expid=84fa067e-b888-4243-b9e4-a0f1204c7e3b-0&btsid=2100bdd816231439069847906e4e02&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

No, they just don't warranty the non-standard part (or a failure of another part due to the non-standard part). Pads aren't under warranty anyway.

There is nothing magical about Lexus main dealer servicing. It's mainly fluid changes and a look around; very difficult to justify the prices they charge. I imagine for a large number of people they are using the main dealer because they want to maintain FLSH to protect their resale price, but for someone looking to keep their car for a long time that reason goes away, or they have an extended warranty (or now Relax warranty) and therefore have a requirement to use the dealer. For someone with tools and capability then they would probably do a better job. They can do proactive things such as lubricate the brake sliding pins etc. and therefore would have less issues/expense than using a dealer. For faults a main dealer should be the place to go. They have the correct diagnostic tools, access to the TSBs and head office, and have probably seen the fault before and can therefore diagnose and resolve the issue quicker than an independent or home mechanic. This isn't always the case though, but at least they have access to some similar cars to swap parts if necessary to help narrow down the problem.

There isn't an official Catlock for the NX as it hasn't been a target and therefore Toyota hasn't commissioned one to be designed and manufactured. The secondary cat under the vehicle isn't as accessible as it is on the RX for example, but I think the main reason why it isn't a target is newer cats don't have as much precious metals in them and therefore aren't worth as much - more money to be made by targeting the older vehicles.

Welcome Alan 🙂 Looks like you need a blue one next.

Ideally not as it shows a lack of maintenance. Whilst the belt not being changed may not have been an issue up until that point (although it could snap at any time), what else hasn't been maintained either.