ColinBarber

The US has a different grading system for their petrol. Their premium is roughly the same as our standard, and Ultra is our premium. From the UK manual:

As has been stated above, get a mechanics stethoscope to try and locate. It could be a cracked exhaust manifold, injector, fuel pump, timing chain - not worth speculating until you can narrow down the area where it is coming from. https://www.screwfix.com/p/silverline-154006-mechanics-stethoscope/175fu

Regular 95 RON petrol. You can use premium if you want but it isn't a requirement.

Less is best - the grease is only performing a function on the moving surfaces. Spraying it all over the hinge body just creates a mess. I tend to apply, open/close the door a few times and then wipe off the excess.

I've not found a copy of the document to understand why - possibly it will react with the plastic, or owners get grease on the clothes, or maybe it attracts dirt and causes wear. To actively issue a statement to dealers not to do it must mean there is a reason. You would still apply it on the hinges.

This is only for smart entry, not pressing the fob buttons. After 5 days the vehicle reduces the frequency in which it transmits a signal to find a key to save battery life. It will always be listening to receive a signal sent from the key when a button is pressed.

FYI, Lexus no longer recommend grease on the door strap as per a TSB about 5 years ago: ABOLISHMENT OF GREASE APPLICATION TO DOOR CHECK

Do you have a dash cam installed? Some of them can interfere with the DAB signal.

Jeweller’s rouge, probably applied with a rotary polisher as it would take a long time by hand if it’s anything bigger than a single small scratch.

Dimensions:

It will be interesting to know what error code(s) you have. There are 4 sensors, the ABS sensor on each wheel hub which go to the ABS/VSC ECU which then generates a speed signal to the instrument cluster/speedo - I thought that losing one sensor doesn't stop the signal to the speedo.

Just buy one to save money and see if that clears some of the faults before getting a second one. I'd recommend getting Denso brand ones, non-OEM sensors have been known to still trigger errors.

start studying: https://www.lexus.co.uk/owners/about-my-lexus/manuals

Was everything ok and then all these faults developed at once? Seems odd that you would get so many together. I'd clear them (disconnect the battery for 1 minute), go for a drive and then see which ones come back. They are mainly all related to the O2 sensors (suspect the upstream sensors are faulty and causing errors on the downstream ones), but error 19 is related to the throttle position sensor (but this could just be a spurious error, so clear errors first to see if it returns).

Here's the 2016 spec - back then all grades had leather seats as standard:

The engine itself really hasn't changed much and still creates 90 bhp, it is the hybrid transaxle and motor that gives it the extra power. I think it's another month before customers get deliveries, just the demonstrators in the UK at the moment.

You never know but this is normally only an issue at start up - not once the vehicle is running and charging up the battery. I'd like to think that an official Lexus dealer would have performance that basic check. Potentially more likely a problem with the hybrid dc/dc converters which aren't supplying 14.4v to run the vehicle/charge the aux battery correctly or some other issue where the hybrid errors are a symptom and not the cause.

Not sure if the sensor is a different shape/size but the cable length will be different so best to try and get the correct one.

You need to look at the right rear wheel - check the ABS reluctor ring for cracks or dirt, possibly the wheel sensor itself is damaged. Ignore C1223 - that's just a generic ABS fault, the specific one is C0210.

Find the line that the boost gauge tees into and tee into that one - don't tee into the boost gauge itself (i.e. don't tee off the tee).

No, I highlighting the fact that this is an issue in multiple countries - this one from part of Canada is an example.

That's not true, depending on what product you use. Normally it is the tyre shop wanting to sell you a new tyre. e.g. Tyreweld is a water based foam which won’t damage your tyres in any way and can be wiped out of tyres easily. You should tell your mechanic before they remove the tyre that you’ve used Tyreweld. Some mechanics might not be familiar with Tyreweld’s formula, so you should inform them that it doesn’t damage tyres and can be wiped out. However it might be that on inspecting your tyre, the repairer has found other damage which makes it unroadworthy. If this is the case, ask for details so you know why the tyre is being replaced.

There seems to be more talk about this in the US recently and has been a problem in other countries for as long as in the UK: https://www.cbc.ca/news/canada/toronto/stolen-lexus-anti-theft-device-1.6994007

Are you sure you aren’t just reading State of Charge? I don’t believe there is a simple health figure you can read from OBD for NiMH battery hybrid vehicles, it’s part of the reason the hybrid health check takes time whilst they perform several tests. I’m also not aware of any specific figure the pack has to be replaced at, certainly nothing in the UK warranty, unlike the EVs with Lithium Ion batteries. No one here that I recall has had a battery replaced on any Lexus hybrid that wasn’t producing a hard error.

TMC also has millions more in profit to fix it.