ColinBarber

Almost certainly related - rare that faults coincidentally develop separately. There is a lot of wiring that goes from the RHD body ECU passed that area to communication with the other body ECU. Both control the door locks. Worth making sure everything else works - lights, wipers etc. etc. in case a fuse has blown or connector knocked.

Yes the infotainment systems on US Lexus vehicles is completely different to European ones.

Definitely check the valet switch is working correctly, not just mechanically but electrically. Have you changed any customisation features, as remote boot release can be disabled in software?

It probably isn't enough to cause any issues however if it was my vehicle I'd still take it out. If the engine burns oil I'd probably leave it but all my Toyota engined vehicles never use oil so you will be overfilled until your next oil change.

You need to follow the charger's instructions. Some expect the battery to be fully charged on normal first before running the recond/refresh cycle, others from empty. Either way it is advisable to disconnect the vehicle from the battery - sending higher than normal voltage pulses into the vehicle's electronics isn't recommended.

There aren't really Lexus parts, only Toyota parts. Lexus would do nothing if a 'Toyota' part failed between 3 and 5 years - it is the car that carries the warranty not the individual components. If you purchase a component it only has 1 year warranty. The warranty has nothing to do with likelihood of failure - just what the market will take and what regulations are in place, hence a Lexus in the US has a 4 year warranty, and 3 years in the UK. Lexus in the UK compete against manufacturers that provide 3 years, therefore there is no reason for them to offer more. Toyota compete against manufacturers offering 5 and 7 year warranties, which is why they moved from 3 to 5 years some time ago.

Humid

Lexus GB get essentially no say in product development, the market is too small for a say in a worldwide vehicle

The details are meant to be stuck on the side of the glovebox which you can see when opened if fitted correctly. I don't believe these are fitted in the factory, more on import so hopefully they follow the installation procedures correctly.

https://www.lexus-tech.eu

I doubt they would chop out just the UK, it is Lexus Europe's biggest market - more likely the whole of Europe - that way they don't have to go through homologation for the region, no NCAP, no emissions/economy testing, creating manual language translations etc. etc. They only sold 1,226 IS vehicles in 2019, and only 216 this year to end April (ES at 389), but as rayanns pointed out, it is a seven year old design and sales always fall away with age.

Yes, owners of the LS and LC have loads of cash 😉

Maitland

The issue is I'm not sure it is an accessory. It is probably only a factory fit so the wiring will not be in place if it didn't come with it and a not factory system won't integrate into the dashboard display. If that is the case then what a dealer can offer isn't any more than any other third party installer for less money.

Welcome Andy 🙂 Do you not have the service book? You may find the online details lacking, especially the older entries.

Ideally you need some diagnostic equipment with data logging capabilities so you can take real-time readings of the engine parameters and sensors whilst driving and then go back and look at the data so see what the issue is. It is very obvious for example if the throttle position sensor reading suddenly changes, or a temperature sensor etc.

any mobile mechanic would have one, or you can buy from from Halfords, Eurocarparts and probably Amazon too. e.g: https://www.halfords.com/tools/hand-tools/automotive-tools/laser-compression-tester-221918.html you take out all the plugs, fit the testing into one of the plug holes and crank the engine over for 5 seconds with the throttle wide open to take a reading. Then repeat on all the remaining cylinders. The actual reading isn't too important, probably around 180 to 200 psi but it is the difference between the cylinders (ideally within 10% of each other). If one is low then there is a problem with that cylinder, and you can do some additional tests to try and determine if it is an issue with the piston, head gasket or valves.

you can get an aftermarket one installed by any garage but for a genuine integrated one I'm not sure if it is possible even at a Lexus dealer - you would have to speak to your local dealer to confirm.

No, you physically push in the fuel flap (whilst the doors are unlocked) and it will pop open.

Parking sensors were an option on the SE grade, standard on all others.

The Lexus workshop manual only give to areas of investigation for this fault code - incorrect mechanical timing or a faulty ECU. The fault is generated by comparing the time between crankshaft and camshaft signals by the ECU - faulty wiring would prevent the signals from being received and trigger a different fault code so I cannot really see it being a wiring issue. If a cylinder misfire is the cause of the 1346 error code then I would expect normal misfire codes to also be generated. Have the cylinders been compression tested to see if one isn't quite right?

Electronic Control Transmission. Yes essentially they are throttle/gearbox/traction control maps.

I think it is a 15A fuse, labelled P/OUTLET NO. 1.

Well obviously the AA don't make electronic devices and this does come from China, but I'm not sure what that has to do with anything considering most electronic devices are made there, and the ones that don't almost certainly have components made there. The OBD socket isn't designed for charging but these are very low current devices, not doing much more than stopping the battery from discharging rather than actually charging the battery. The newer one the AA brand is a 4W panel rather than 2W, which probably has a little more chance of keeping the battery topped up for vehicles with smart entry system as that consumes more power but is more expensive at around £35.