ColinBarber

ignition needs to be fully on, leave for at least 6 minutes for the ECU to fully learn the key.

There are a lot of ECUs in the vehicle, at least 20 on the 300h which will all consume power with the ignition on. The stereo and nav system, if not turned off, consume power, including its cooling fan. The hybrid system has pumps for brakes etc. Auto headlights could come on if dark. Best to turn on the ignition, let it settle for 30 seconds, make sure everything is turned off that you are able to turn off, and then try to go into 'Ready' mode - even that will consume power as you have to press the brake pedal which will put on the brake lights - luckily LED otherwise that would be 40 w on its own.

Not sure why a duplicate post, and in the wrong forum, but it is very likely to be the immobiliser - see thread on the GS forum.

Yes the series II GS is the same. Make sure the immobiliser light goes out, otherwise the engine will just crank and flatten the battery.

There are very few Toyota/Lexus hybrids that have needed a replacement battery - certain on the Prius/Auris/CT. Most replacements have been due to water flooding damage or rear end collisions. Toyota are also confident - if you get the hybrid health check they will warrant the battery until it is 15 years old. If they only lasted 10 they wouldn't to that. Even if the battery does fail, it is normally a cell or two rather than the whole battery and independent repairers will charge less than £1000 to fix.

It won't last long if you used it as a replacement for the aux battery but would give sufficient current to get it to 'Ready'. The 45Ah is there to allow you to power lights, stereo, heating, power unlock doors etc. for at least some time without being in Ready mode, and to allow the vehicle to stand for two or three weeks and still have enough capacity to 'start' the vehicle.

Was everything turned off? 15A seems high. I jumped a RX400h once from a battery charger, that could only supply 8A maximum.

yes. You could use that to 'jump start' a hybrid if your aux battery was discharged. You need to minimise the current draw though - lights off, turn off the stereo, heating etc before trying to get it into Ready mode.

Hi Andrew You don't need to go to Lexus for servicing. If anything needed doing to the hybrid system I'd take it there but for anything else an independent should be able to do it. Lexus are expensive for servicing. Lexus GB set the pricing so you won't find too much discounting from the dealers - the prices are all available on the website. https://www.lexus.co.uk/owners/servicing-and-maintenance/vehicle-service/#pricing If the vehicle is over 5 years old then you can get essentials servicing which is a slightly cut down schedule and cheaper labour to keep people of older vehicles still using the main dealers. With either you get the hybrid health check included which provides warranty on the hybrid battery for 12 months. If you get your vehicle serviced at an independent you can still get the hybrid check done but will cost you £59. Note this only covers the battery, not the hybrid inverter, motor etc. but all very reliable. You can get a service plan from your Lexus dealer - you don't really save anything other than the price is locked in for the duration and you can pay monthly. Normally the plans are either 2 or 3 service and depending on what service you require next would be minor, major, minor or major, minor, major. Any MOT centre can carry out the test. They don't bother testing emissions on a hybrid which is the only thing that is different. If you get the Lexus extended warranty (2 years for a CT is £495), you get roadside assistance and MOT testing built into the price. The T&Cs of the warranty insist that you service your vehicle at a Lexus dealership.

yeah I meant for an F. The engine can take as low as 91 RON fuel but only when 95 or greater isn't available - you cannot continuously use 91 RON. The Russia Fs recommend 95 RON.

If the CT for the age you are looking for is out of your price range then look at the Toyota Auris hybrid. It is the same car just with different body panels and interior - and rear suspension that is better than the Lexus. Not as luxurious as the CT but cheaper.

Best to pull the sliding pins out and re-grease every 30k miles/3 years to avoid this, maybe even every two years after you have done it the first time when the vehicle is three years old. Not sure why Lexus don't add it to their service schedule - affects all Toyota vehicles that use the sliding calliper design - other than they probably make too much revenue selling new callipers/carriers from all the vehicles with seized ones. One good thing about the GS and LS - they don't use this brake design.

doing a bit of research on other forums, it seems this engine is known for a single coil pack producing misfires across multiple cylinders, so you should concentrate on the one showing the most misfires. Not sure if the others are actual misfires or just the ECU detecting the misfire at a point in time where another cylinder is due for firing and therefore it triggers against the wrong cylinder - I suspect the latter.

Not something a trickle charger, or any charger, is designed for and therefore I should say you shouldn't do it, but I also know it will work. Just make sure you don't make a demand on the battery by opening the doors or letting the auto lights come on etc. If it is an intelligent charger then it may not work, as if it detects no battery it could automatically shut off.

95 RON is the lowest recommended in any country. The US and other countries don't use RON figures and therefore you could see a lower number but that is MON or AKI.

What is weird is that in the tech manual it states 98 but you can use 95 on the GS F but the RC F just state 95 or greater with the same engine and mapping. *2: Premium unleaded gasoline with a Research Octane Number 98 or higher required for optimum engine performance. If 98 octane cannot be obtained, you may use unleaded gasoline with a Research Octane Number as low as 95. Use of unleaded fuel with a Research Octane Number lower than 95 may result in engine knocking and significantly reduced performance. Persistent knocking can lead to engine damage and should be corrected by refueling with higher octane unleaded gasoline.

I'm guessing that is just because the v-power is old and purchased when normal unleaded was mid to high £1.2x.

The NX certainly needs a new engine. Makes sense that a plug-in will become available as the Rav4 is getting that same treatment later in the year and they share quite a bit. It will be interesting if Lexus GB offer them as their marketing stance has always been up until now that Lexus owners don't want to worry about having to plug in their vehicle.

It reverts back. The only way to turn off permanently is in the vehicle settings - not sure if that is owner exposed or via a dealer (techstream).

just swap coil pack 2 and 6 to see if the fault moves.

This is Lexus' official statement: If you are concerned about your vehicle’s routine servicing, please do not worry. Lexus would like to reassure you that for the foreseeable future we intend to take a flexible and sympathetic approach to any service schedule or warranty issues.

It is rear wheel drive so you do need to be careful. Winter tyres do really help but I never bothered for the 4 years I had my 300h.

Thanks Roger. Been out for a couple of weeks now, all fully recovered. It sounds worse than it was really, I had dehydration issues which is why I went into hospital and they kept me in as a precaution more than anything else.

you don't need breakdown cover either then 😉 Whilst I'd normally agree, and I've never bothered with extended warranty on my previous Lexus vehicles, the price of parts for the F is just too much to risk - looking at £10k plus if there is an engine failure for example.

the system uses quite a bit of power so easier to self-contain rather than beefing up the main battery and running high current wiring.