For a 1990-92 LS400, your symptoms are very common: Odometer stopped: often an odometer gear or cluster electronics issue. Speedometer works but illumination doesn't: these early LS400 clusters are known for backlighting and needle-lighting failures, power supply issues, and aging components. Owners have been discussing these exact problems for years. [clublexus.com], [Lexus LS40...luster ...] A shop that appears to specialize in these clusters is Tanin Auto Electronix. They advertise mail-in repair service specifically for 1990-2000 Lexus LS400 instrument clusters, state they've repaired these units since 2005, and note that sending in your original cluster preserves the odometer mileage. They also mention keeping parts in stock and offering repair rather than requiring a replacement cluster. [taninautoe...tronix.com], [taninautoe...tronix.com] Regarding cost and turnaround: Their published base diagnostic/labor charge is $139.99, with final repair cost depending on the specific faults found. [taninautoe...tronix.com], [taninautoe...tronix.com] They state a typical turnaround of about 1 to 2 weeks, including repair and delivery. [taninautoe...tronix.com] For DIY removal instructions, the old LexLS tutorials are still among the best references for early LS400s: How to Disassemble the Instrument Cluster covers removal and disassembly of 1990-92 clusters. [Lexus LS40...nt Cluster] How to Repair Partially Illuminated/Lit Instrument Cluster Needles discusses the lighting problems common on these cars. [Lexus LS40...luster ...] One thing I'd recommend before shipping the cluster: take photos of the odometer reading area (even though it's no longer advancing) and keep a written record of the vehicle mileage history. That can be helpful documentation if anyone ever questions the mileage discrepancy created by the failed odometer.

Yes, that's actually very normal on the 2015 Lexus RX450h. The fuel tank capacity is about 17.2 gallons, but Lexus builds in a fairly large reserve. When the low-fuel warning comes on or the range display drops to around 25 miles remaining, there is often 3 to 4 gallons still in the tank. Your numbers work out about right: Tank capacity: ~17.2 gallons Fuel added: ~13 gallons Fuel remaining: ~4.2 gallons That's consistent with what many RX owners report. A few reasons manufacturers do this: Protect the fuel pump. The pump is cooled by fuel in the tank. Prevent running completely dry, especially on hills or during aggressive driving. Range estimates are conservative to avoid drivers unexpectedly running out of fuel. For example, if you're averaging 25 mpg, 4 gallons remaining equates to roughly 100 miles of fuel, even though the display may show much less. The "distance to empty" calculation becomes increasingly conservative as fuel gets low. The real test is whether you can ever put close to 17 gallons in the tank. Most owners only see 16 to 17 gallons added when they've driven well past the warning light. One caution: don't routinely try to use all of that reserve. It's better to treat the low-fuel warning as an indication to refuel soon rather than a challenge to see how far it can go. Out of curiosity, when you fill up after the warning appears, does the fuel gauge show exactly empty, or is there still one bar/pip showing on the display? That can help determine how conservative your particular vehicle's fuel-level calibration is.

What you’re describing sounds more like a software/infotainment bug than a setting issue, especially since: The audio source was left ON when the vehicle was shut down. The system sometimes fails to restore the previous audio state after startup. Pressing the physical volume/power knob does nothing when the condition occurs. You occasionally have to acknowledge an audio screen message and reselect the source. Interestingly, your post is now mirrored on the Lexus Owners Club forum, and there don't appear to be any owner-provided fixes posted yet. [us.lexusow...rsclub.com] My guess is that the dealer will: Check for a Lexus Interface software update. Verify whether the multimedia control module has any stored fault codes. Compare your vehicle's behavior against any Lexus technical service bulletins (TSBs) or field reports. Since the problem is intermittent, I'd recommend documenting: How often it happens. Whether Android Auto was connected when it occurred. Whether SiriusXM, FM, Bluetooth audio, or another source was active. Whether the phone was connected wirelessly or via USB. That information can help the technician reproduce the issue. Regarding Android Auto, some Lexus voice features are normally handed off to Google's voice assistant while Android Auto is active. As a result, certain native Lexus voice commands may be unavailable or limited until Android Auto is disconnected. This behavior is common across many manufacturers because Android Auto becomes the primary interface for navigation, messaging, music selection, and similar functions. [youtube.com], [wheelsjoint.com] A quick test you might try: Turn off Android Auto on the phone or in the Lexus settings. Drive for a few days using only the native Lexus system. See whether the radio startup problem still occurs. If the issue disappears, that would strongly suggest an interaction between the Lexus Interface software and Android Auto rather than a hardware problem. Out of curiosity, when the radio fails to come back on, does the infotainment system otherwise appear fully loaded and responsive, or does the entire system seem to be still "waking up" at that point? That distinction can help narrow down whether it's an audio-state issue or a broader multimedia software issue.

I'm not going to say this is a comprehensive list by any means, but these are the years/models I know had an option including manual transmissions: 1990-93 ES 250 and ES300 1992-1997 SC 300 2002-2005 IS 300 2006-2012 IS 250 A good few of these models are next to non-existent in the states though; manual transmission Lexus models just weren't very popular

and I thought computers and modern technology were supposed to make things easier for us :-) I think you are on the right path and your dealership will hopefully find a solution within the settings Please let us know how you get on with it as it could be of great use for other members to know the fix