NemesisUK

The less scrupulous dealer might add some sawdust to the oil to quieten a noisy diff How long do you expect to keep the car? An additive might be a short term solution but my preference would be to diagnose what the noise is. Might be simply a slight adjustment of the crown thrust bearing.

Just checked the service sheet from Lexus-tech.eu for both the RF300h and the RC-F Just as the post in my link stated. Use the LT for standard or torque vectoring diffs and the LX for the LSD diff

The posts in the link seem to suggest 'LT' is for non-LSD equipped cars, 'LX' for those with LSD?

The 'LT' prefix may be important.. http://www.ft86club.com/forums/showthread.php?t=23966

I saw that but wondered if it was the same grade?

In my RC one can set voice guidance to off using the menu setting Setup - Voice - auto voice guidance On/Off

369 days from delivery and just 7500 miles later my RC had it's first service today. All went as expected, no issues, hybrid health checked ok. Dealer was superb, very accommodating, right up to when I requested their LC500 as my courtesy car No amount of cajoling would change their mind. So away I went in a brand new CT200h... If it didn't have a Lexus badge on it I would never have equated the two .. I'm sure the car fulfils a purpose but my word I found the car terrible. The ride was so hard I'm sure I've chipped a tooth. The seat was totally unsupportive, no amount of adjustment helped. What on earth is that gear selector all about? The engine sounded like a rolling tin , half filled with nuts and bolts. The throttle had no resistance behind it, not that it mattered really, there appeared to be no power either! The e-CVT clunked in and out of D, N and R. When the ICE cut in or out there was a hefty jolt. I had to double check the driver's window was closed properly the wind noise was so bad above 50mph. On returning the car I suggested a tech take it out for a drive. All perfectly 'normal' ... Getting back in my RC was like slipping on a nappa leather glove, so smooth, silent, comfortable. I really can't believe how different the two cars are.

I wonder how much postage would be? https://www.ebay.co.uk/p/TOYOTA-OEM-08885-02506-DIFFERENTIAL-GEAR-OIL-LT-GL-5-75W-85-1-LITER-B2/658924541?iid=201556841070&_trkparms=aid%3D222007%26algo%3DSIM.MBE%26ao%3D2%26asc%3D48786%26meid%3D4e3214f6093345b3984170a85a0117b1%26pid%3D100005%26rk%3D4%26rkt%3D4%26mehot%3Dag%26sd%3D322852645419&_trksid=p2047675.c100005.m1851

Ebay? https://www.ebay.co.uk/p/TOYOTA-OEM-08885-02506-DIFFERENTIAL-GEAR-OIL-LT-GL-5-75W-85-1-LITER-B2/658924541

According to "How Many Left" website there are only 6 LC variants registered in the UK https://www.howmanyleft.co.uk/?utf8=✓&q=lexus+lc500&commit=Search

2016 RC300h came with an owner's handbook and nothing at all for the infotainment. That said the handbook and in depth information on the Audio/Sat Nav etc is downloadable from the My Lexus portal, much easier to search and read

My perhaps naive assumption is that the traction battery power is there to reduce fuel consumption and provide low down torque, stop-start driving comfort. Once one drives at WOT all the power will be from the ICE and you'll not notice any significant reduction in Vmax If my RC300h is anything to go by the traction battery will last, perhaps 1.5 miles on electric alone and if in combination with the ICE it never depletes completely.

Keep the a/c on permanently. Check windscreen scuttle drains are clear, cabin pollen filter is dry and clean. Don't leave damp coats etc., in the car. Keep the inside of the windows really clean.

Check you haven't inadvertently switch off the function.

Many current Mercedes models do not have an Off position for lights. I don't see this as an issue for the regulatory authorities (clearly it's not or they wouldn't have got type approval) as lights left on are not a safety issue. Whereas lights not coming on could be, as witnessed by me this morning with the number of numpties driving in rain and mist, virtually invisible until the last minute! My RC seems to switch the headlamps on very promptly, I pass under a fly-over nearly every day and no matter the ambient light level, the lamps flick on the instant I pass under and remain on for ~10sec after exiting. The fly-over is only dual carriageway wide. The sensitivity is factory level, never felt the need to change it.

Lexus is just commenting on possible changes in the cosmetic appearance, rightly or wrongly. They've made no statement regarding the structural integrity over time. They couldn't do anything else, otherwise they would be publicly accepting there is a concern. Clearly you believe there is, Lexus may think there is but they cannot say so, or even hint at it, for obvious legal reasons. Personally I think Lexus/Toyota have designed in sufficient strength redundancy. I've no evidence to support this just my feeling that they are too experienced a global company to leave it to chance and them to litigation?

Los Angeles has similar average UV levels as those found in Tokyo. I feel Lexus will have had all this factored into their design of the exposed carbon fibre panels. I'd still like to read what Lexus come back with though

As the hybrid uses an electric pump to create hydraulic pressure in the brake system it may be as with the SBC system in early Mercs, that there is a reservoir held under pressure and this may mean that Techstream is required to correctly bleed the system? On the Mercedes one can bleed without STAR (the MB equivalent of Techstream) but it doesn't bleed the whole system. Shouldn't be a problem if one is simply bleeding after pad change, rather than renewing brake fluid as part of the 2yr service?

Did you give permission for the extra work?

Did you give him permission to do the rear brakes?

Does in the READY position mean the hybrid system was operating? In which case the engine would have come on intermittently to recharge the traction battery. Might explain why the car was warm the following morning and the car started ok. The 12v battery only operates the entry/exit system and the computers until the hybrid system takes over.

My RC reacts very quickly when going under a bridge. What sensitivity setting do you have your auto lights on?

Carpets are man-made fibre (Polyamide?), so I doubt it's moths or carpet beetles. Any repairs to the seat runners? Out of warranty but still worth giving the dealership a go

Don't forget to enable automatic downloads (in the car) and enable WiFi or Bluetooth hotspot on the phone.

This I think sums it up very well and by default are giving out the corporate spiel to cover their backs. This must be what prompts the line in the email regarding "external influences" affecting the integrity can I phone a friend? Definitely agree but perhaps Lexus are not highlighting this because they believe it's not an issue in normal use? No, neither would I I'd hazard a guess that they know nothing about it at the dealership level but I doubt the cars are exposed long enough to cause significant degradation? I look forward to reading Lexus' response to your second email