WXL

Having checked the speedo in my car against the speed indicators in Waze, Google Drive and several electronic roadsigns, it seems my HUD and the cruise control are registering my speed at 3mph slower than everything else. If it's true, is this a major recalibration job?

@Herbie - that's exactly the location I had in mind. But, according to @Silversalmon, it may be a post-2012 feature (although the Owner Manual I'm studying is dated 2010). But I guess it will be relatively easy for someone to instal. Quite why the other supplies are concealed in the way they are is a quaint, but somewhat irritating feature 🙂

I noticed in the owner's manual for my 2010 RX450h that there is a picture of a 12v power supply in the under tray below the gear stick (i.e. in addition to the power supplies hidden in the box behind the gear stick). But mine has none. Do we know if this is peculiar to the US editions of this car? Or am I just unlucky? An additional supply there would be soooo useful.

So my next question (as a recent Lexus owner) is this: when the car is stationary, there is a constant buzzing noise coming from behind the glovebox; then, when the car moves off, the buzzing increases by about 7 tones (in musical terms) and stays constant; then, when the car slows down and stops again, the original buzzing resumes. In other words it's not silent when stationary. Except when it is (i.e. occasionally it's completely silent). Although this is potentially quite musical, it does make me think that the buzzing shouldn't be there in the first place. Any thoughts and ideas?

Thank you. I'll mention this. I guess that may also reveal another message that reads: "Check Active Stabiliser Suspension System". Have a good weekend.

Thanks for the reply, Herbie. I've never had such an electronic car before (previous cars have been pretty mechanical...!). So are you saying this: if the power steering failed several times a couple of days ago, but it's OK now (because I turned the power off and on again and have only driven slowly since then) will there be a fault history (from a few days ago) that can be diagnosed when I take it back to the garage? Or does the fault history disappear once the fault is no longer there?

I have an RX 450h SE-L from 2010. It's in good condition. But when I (occasionally) exceed 72mph (whether or not the cruise control is on) the power steering often (but not always) fails. As soon as I stop, turn the power off then on again, the power steering is fine. It works perfectly at lower speeds. I can't see this being a Lexus safety feature (!). Lexus say they can't detect the fault unless it's a "live" fault. But I can't keep it as a "live" fault unless I drive with no power steering (which is like driving an old BL Land Crab...). Any similar experiences / suggestions / thoughts from the Hive Mind?

My first service of a 2010 RX 450h shows a leaking tramsmission with a warning that it might have to be replaced. I understand it's a sealed unit. Any ideas of the cost of this? Depending on that, I may take it back to the trader who sold it to me. Many thanks.

Alas, no RFT markings 😞 That said, you clearly know more about this than I do. Is it possible / do people actually soften the suspension on a 450h? I did this with the sports suspension on my Jag (no problem with this) to make it waft more. But it may be different with an SUV.

Hello John. Thanks for replying. The tyres are Bridgestone Dueller H/P 235/55 R19 101V. And are set at 33psi

I've just bought my first Lexus. It's a 2010 RX 450h SE-L with low (59,000) mileage. I find the (non-air) suspension quite unforgiving. Do people ever soften it / is that even possible? I've had a Jaguar for years and the difference is noticeable. Thanks.