Herbie

Can of Worms.....OPENED! Not really sure if this should be in the RX forum as it may only be the RX that uses this size of tyres, but anyway, just seen the following question posed in the Lexus Owners Club UK Facebook Group: I've heard that some RX owners have swapped from 235/55/20 to 255/50/20 because of the vastly superior choice of rubber available. Has anyone done this, and what have you noticed real-world in terms of handling and MPG? I note that both my favourites, Michelin Cross Climate and Goodyear Vector 4Seasons, are available in the 255/50/20 size, so what are the ramifications of changing to that size on a 2018 RX450h?

This is from the RX400h workshop manual Jack:

As always, word of mouth recommendation is the best, but failing that just Google for car detailers in your area and look at reviews. This may be too far for you (having said that, we bought our car at Lexus Teesside and it's a lovely two-hour run) but this is a company here in Preston that scores 4.8 out of 5 stars over 22 reviews. There's also Sunnybank Car Detailing (no website) who score 5.0 out of 5 stars over 10 reviews.

Personally I would cancel that and go to a proper detailer. Detailing, ceramic coatings and so on are a specialised skill on their own. Horses for courses as the saying goes.

Absolutely. Of course, it does rely on people knowing how to use aircon properly in the first place and I completely agree with Linas there. It should really never be turned off because again, as Linas says, it's the circulation of lubricating oil that keeps the rubber seals supple and prevents them from drying out, therefore preventing an escape of gas and oil. If that one condition is met then there is absolutely no need whatsoever to mess about with having the aircon "serviced". The clue is really in the name as it's all one big (air)con I've had cars for 10 years that have been as icy cold as the day I bought them and never had a service done on the AC. Only just last week, in a different topic, @steve2006 said that he'd owned his Celsior for 26 years and never had it serviced and it was still as cold as ever when he sold it.

I'm being pedantic, I know, but no, it does not need to be serviced every two years. The refrigerant and lubricating oil is kept within a sealed system. Neither the gas nor the oil wear out, degrade, or undergo any changes whatsoever, so that's that part of the system covered. As for the mechanics of it all, I doubt any advanced warning of seizure would be visible, so that's that part of the system dealt with. Any escape of gas or lubricant would be flagged up by the aircon not getting as cold as it used to, but that would be classed as a fault that needs to be investigated ny the use of vacuum pumps and dyes. There is absolutely no need to waste money on "routine servicing" of the aircon system. Sorry, rant over - just one of my pet hates

Paul beat me to it, sort of. I was going to say that someone on these forums (can't remember who) took the car out of the showroom and then spent the best part of four days I think it was, machine polishing, waxing, and so on - so I think the answer is, do it whenever you want.

Often some very interesting stuff in El Reg

As Royoftherovers says, Relax doesn't cover multimedia anyway. However, even if it did, the usual rule of thumb is that you may invalidate the warranty on whichever thing it is you're working on, but not for the whole car. For instance, modifying the lights may invalidate any lighting claims but it wouldn't invalidate a claim on the brakes or the cooling system etc.

I doubt anyone will pay to have it shipped from the USA - this is a UK forum. Plus, if you're serious about selling it anywhere, you need MUCH more detail and lots of photos.

Glad you got it sorted Stew I'm not an audiophile either so I wouldn't go out of my way to replace it with some super-dooper unit that costs a fortune. I would say any speaker that has the same impedance and power rating and is the correct physical size to fit, would do me.

You could try http://lexuspartsdirect.co.uk They're a main dealer but sell stuff out a lot less than other dealers.

Beautiful car Shahpor, enjoy!

You could indeed, and many people often do. Sometimes it's unavoidable but that's not the case with dashcams so I stand by my point.

I would sincerely hope not. As it stands I have a choice of which camera(s) to fit and if they ever go faulty I can either replace like-for-like or take the opportunity to change brands, all at a reasonable cost. Imagine the cost of replacing a Lexus camera when it goes faulty, not to mention that you're stuck with lack of choice.

I would give up on ever using it. The Lexus voice recognition is and always has been, abysmal, and usually goes something like this: Me: "Call home" Car: "Dialling 837. If this is incorrect blah, blah" Me: "Dial home" Car: "Dialling 3492. If this is incorrect...." Me: "Dial 01632 753951" Car: "Dialling 58. If this is incorrect....." Me: "AARRGGHH!!!"

It's a stipulation because they want to make money. A significant loss of gas would result in the aircon not being as cold as it should, which is something easily discovered by a person and much earlier too.

Maybe it's because I never switch the aircon (and now the superior climate control) off at all. Summer, winter, 365 days per year, my AC or CC is/has always been on, so the seals have never dried out and I've never lost any gas.

Doesn't really matter. The point is, if you thrash the car for a couple of hundred miles then the projected range on what fuel is left may only be 100 miles. However, if you start to drive like Miss Daisy then that projected range will go up to, say 150 miles on what's left.* The projected range can only ever be worked out by how the car has been driven in the past. My sister in law and her husband are a perfect example of this. They have an electric car (can't remember what it is) that has 'key profiles'. When June gets in the car with her own key the car welcomes her and says something like, "Hello June. You have 130 miles range left before charging." However, when Nige gets in with his key it's, "Hello Nige, you have 80 miles range before charging." This is because he drives it a lot harder than she does *All figures just made up to illustrate the point and are not accurate.

I've never needed any "antibacterial cleansing" in any aircon system I've ever had but even if it were needed, I believe it's something you can do yourself so I wouldn't be paying a dealer to do it. This is just one of many videos on the subject: As for the "aircon service" it's nothing but one big con. The air conditioning/climate control system is a completely sealed and self-contained system. The refrigerant gas and the lubricating oil in the system never wear out, never degrade, never age and are never changed by their environment. Given that, what can possibly need "servicing"? If the system doesn't get as cold as it once used to, the only explanation for that is a fault somewhere, most likely a leak of refrigerant but on a sealed system that's a fault that would need to be investigated using vacuum pumps and dye, not something that a routine service would cover or fix. I've had cars for ten years that are as icy cold as the day I bought them and they've never had a routine service on the A/C - it's simply not needed.

Why not? Far too many idiots around on the roads these days. Accidents can be genuine and, well, accidental, or they can be deliberate 'crash for cash' occurences. Dashcams can show who caused the accident and the footage can be used in fighting your case. They can also capture agressors tunring violent towards you or someone else. An absolute 'must have' in this day and age.

Maybe Lexus could communicate a bit better with their customers but they, along with the rest of the world, are suffering component supply issues and the situation is changing on an almost daily basis. Just got to sit tight and wait, I'm afraid.

I don't know what the dash looks like in one of these but if you have a cigar lighter you could just replace it with one of these like I did in my RX300 (plenty of choice on eBay):

Just sent you a PM Chris.

I don't think the electrical supply is divided into left windows and right windows so if the driver's side works then I don't think it can be the fuse. Do you mean that both front and back windows work on driver's side, or literally just the driver's window? There's an isolator switch on the driver's door master controls - have you turned that off by mistake? Go to each window in turn and use its own controls to completely lower and hold for a couple of seconds, then completely close and again hold for a couple of seconds.