AtomAnt

Try calling few dealers and gauge who is likely to help. Which part of UK are you are based ?

"Everything should work as is, except for the issue with the WiFi, which tends to stop working based on my experience. However, it's worth mentioning that Lexus doesn't offer a wide range of connected car services, so you're not missing out on much. If the update is successful, it would provide an online map update, but this might come at a cost if you're outside the initial three-year warranty. Additionally, it would include AC and AA functionality. If you decide to go the extra mile and source a second-hand DCU (the brain), make sure it's an exact match with the same part number, as there are a few variants. I discovered this during my research when my upgrade failed. One of the text files in the update files contained this information. To save you time, I extensively searched through various forums, including US Toyota ones, but couldn't find a solution. There was even a Russian forum that discussed moving files around and modifying hex codes, but I believe it's not worth the effort. It's highly likely that you'll end up bricking your unit beyond repair. I apologize for the negative tone, but that's been my personal experience."

Hi, unfortunately, I encountered a similar situation while attempting a DIY update. If your UX is serviced by Lexus or is still under the normal warranty, the dealer may show some empathy and fix this for you. To my knowledge, the only solution is to replace the DCU. I am currently still driving my NX, and since it was last fixed by the dealer (as mentioned in my previous post), everything seems to be fine. My advice to anyone facing a similar issue is to utilize the dealer services, which cost around 80-90 + VAT. If something happens, it becomes their problem!

Thats correct, the existing unit’s software roadmap stops at wired connection. However, you can use CPLAY2air wireless adapter (only AC compatible though), which I use everyday! Its plug and play!

Yep, I got it as well. This whole AA/AC upgrade has been controversial! On many fronts, Lexus had been playing catchup, in my view.

PS: I used powder free vinyl gloves for this project!

This is a topic I was searching for for a while, but eventually, I managed to find something that works through some research! Last month I was very close to selling my NX300h since PCP was coming to an end, and I was torn between inflated residual value (make some profit) vs a new car! In the end, I decided to keep the car for good unless Lexus releases full electric (not UX or upcoming plugin hybrid NX). The car has 14k on the clock, and I am the 1st owner! One thing that always bugged me was the screen being super delicate - it has a special coating, and if you accidentally end up cleaning it with any random cloth, you can end up like the one below - this is not my image, but it happened to my IS300h, which was replaced under warranty! My paranoia always kicks in whenever I take the car for a wash. I somehow do not trust the car wash guys and always had this fear that they would end up scuffing my head unit display! So the solution is to use a screen protector, which took me a while to source! It was not easy since there are so many variations available in the market, especially sourcing the one with the right size is a nightmare. In the end, I found one through lfotpp.com (I have no affiliation with them, just a dude assisting the community) at a very reasonable price with no shipping cost to the UK! You may not be paranoid like me, but if you are and have been looking for a screen protector for your 10.3-inch display, this step by step may help! Invoice from LFOTPP Display before installation, make sure the display is dust free! Side view to compare before and after Thats how the package looks like! Contents, wipes (wet and dry) dust spec remover etc etc. An other view,.. Dry run, to see if it will fit! Please note it is not edge to edge from top to bottom but the tolerance is acceptable! Contents used, screen is now clean and ready for screen protector application Screen protector applied. Since it is hardened glass bubbles do not form if you let it stick from left to right or the other way around. Side view to illustrate thickness of screen protector ! Overall I am very happy! I no longer worried about scratching/scuffing! Hope this is helpful!

Hello @StGeorge your vehicle's unit is exactly the same is mine. i.e. CY17. It supports AA/AC. Refer to page 4 and page 6 of this post, where i posted images of my unit's software version (earlier releases). In a nut shell you would need series of updates before the final AA/AC update is applied. From bitter experience, i'd recommend paying the dealer to update unit so you are covered in case something gets kaput! Software update process was never consistent! In summary your version numbers are earlier releases of the software. Attaching an image from my vehicle ,which I just took -shows my unit with AA/AC software update release.

I've observed this phenomenon few times, it even use to happen on my IS300h (no longer with me). I spoke to dealer about it during early days of purchase and was not able to reproduce! It usually happens when parked on inclined surface and once you shift to P and let go of the brake quickly before the electronic parking brake is engaged!

Sorry to hear you were treated this way - this is definitely not the Lexus way! Update in 99% of cases require the software to be brought up to a particular version then the car-play update is applied. So the dealers are familiar with the time and effort it can take to get to desired outcome. £60 to £160 jump just does not make sense! Re: wireless Carplay - coincidently, I asked my local Lexus centre few days ago and I was told that other than bug fix releases no major enhancements will be offered! To my knowledge wireless CarPlay was/is never offered with retro upgrade, even in US; thats where it all started!

I was made aware of circa £3,500 plus VAT potential bill beforehand (and I was mentally prepared for a go no go if it came to that) but since my unit was partially working expect "Lexus connect services"; they may have treated it on different ground. Plus, I was under no circumstances going to ask them to charge me! I'll class it as an excellent customer service and leave it there 🙂

Yes 🙂 PS: No explanation on failed. Could be my unit had an underlying fault. If you go back few pages, I mentioned the green screen issue which was rectified by a software update, that is my theory. Who knows! like @ColinBarber said - but if it goes wrong for him (Technician) , he has the backing of Toyota behind him to rectify the issue.

The calm before the storm - I had not much to lose since my unit was in a state of limbo! These gadgets, software/hardware, are pacifiers in my view, and the failed update followed unexplainable anxiety! I got the car back today. I am thankful to Lexus; they delivered it once again. In the end, it was a replacement DCU. For reference, The system is classed kaput once you get the "DCU (REPRO)Vup Complete" / error001 on 1st attempt, even if it is partially working. Plus, I feel, the "try different USB Disk (brand)" mantra is a myth. A USB Disk 2.0 or 3.0 may have a different transfer speeds, but it cannot be responsible for failure. The software used by dealers is the same as on Lexus-tech ( I know we had a go at that). The three USB disks, i.e. yellow, blue and white, are Samsung OEMs that dealers use (Part Number: PW675-00RL1). Irrespective how competent you are (tech-savvy), use the dealer services; I've learnt the hard way. Sigh! My car has Apple CarPlay- what an experience! All the best.

Three days in car is still with garage - I'll update once I have the full story, it may take some time. Please bear with me.

Old thread - but for reference same thing happened to me. Turned out to be an issue with file transfer- MD5 hash did not match when I checked the files on source i.e. downloaded vs 'on' the USB stick. Copied again on the same USB stick and all worked.