ColinBarber

The quality of Blue Print parts ultimately depends on who the OEM is as they don’t manufacture many of the parts themselves. Many parts are made by the same OEM as the vehicle manufacturer used - either the same quality or a budget version.

There is no legal requirement in the UK for headlamps in rain, only if visibility is severely reduced to 100m or less (also the visibility distance when you can legally use fog lights). I've always found the auto lights would come on well before you get to that level of poor visibility. If visibility is that bad then DRLs are not sufficient.

Is he thinking of an engine with a chain rather than belt? The belts don't really suffer from stretching, but they will crack and snap with age/use without warning. Do you know if the water pump was changed with the previous belt 12k miles ago? If so then I wouldn't spend £200 on a new pump when it has another 60k+ miles life in it (provided the correct service intervals have been maintained on the coolant).

It is just poor implementation, not an issue with CAN bus itself. Most Lexus vehicles have multiple CAN buses. The ones that are easily accessible from the exterior of the vehicle should be properly firewalled to stop access to higher security zones.

The vehicle I know of at the moment which is getting enhanced security is the NX, which from now on is, or soon to be, manufactured with Ultra Wideband keys which stops relay attacked. Not heard of this on other vehicles yet but I would expect that to happen at each refresh. UWB can't be retrofitted and probably means they won't produce sleeping keys for older vehicles if they intend on moving to UWB. https://newsroom.lexus.eu/lexus-nx-elevated-by-new-on-board-luxury-features-and-latest-technology/ The only other Toyota/Lexus I know of that doesn't have this issue is the Toyota Supra - purely because the engine, ecu, alarm/immobiliser and keyless entry system is from BMW which has sleeping keys.

Most do, Toyota/Lexus don't.

Maybe the margins aren't there on the saloons to cover the cost of shipping, import taxes and sparing to remain competitive with the European competition. Dealers then don't sell enough to cover the purchase of demo vehicles.

That's really a poor way to disable the keyless system as you would have to do it every time you drive the vehicle. You should disable it in the car, via the user settings or dealer settings depending on model.

SUVs are exactly what the market wants in the UK. It is very clear that people like the practicality, high driving position etc of an SUV and therefore the manufacturers are catering for that need. A car for the vast majority is transportation, to get somewhere in comfort - there are very few people that go out for a drive just for the pleasure of driving with no end destination. Manufacturers price their vehicles based on what people will pay. They can sell an SUV for £10k more because people want them - if people didn't want them they wouldn't purchase them. If in the future saloons become desirable then manufacturers will start to sell them for a premium over SUVs - cost of production is irrelevant.

did you use the auto engine's ecu? What modification to the TB did you make?

Fit & finish and material quality yes but the Tesla is far superior in performance, battery efficiency, charging, infotainment, software, security, heating/cooling, running costs (no servicing),

Tesla make money on their EV sales and are continuously improving the manufacturing efficiency. Toyota admit they are far behind and may not break even on each RZ. This is a somewhat biased article, but the heart of the problem is Toyota are still not designing an EV from the ground up, just adapting existing platforms. https://thedriven.io/2023/03/01/toyota-admits-tesla-model-y-is-truly-a-work-of-art-as-it-rethinks-ev-strategy/

Potentially a coil pack.

Yes, that will disarm the immobiliser/alarm. Obviously you use the metal key to physical unlock the door first (which will set off the alarm).

All the best Paul. You are welcome here anytime, whether you have a Lexus or not 👍

Inverter coolant should follow the same schedule as the main coolant on earlier models. Initially replace the factory fill at 100k miles (150,000 km) and then every 50k miles. Later vehicles have the 150k mile schedule - check your service booklet for details.

RTM ■ Reverse-linked rear window wiper function When the shift lever is shifted to R when the front wipers are operating, the rear window wiper will operate once. ■ Back door opening linked rear window wiper stop function When the rear window wiper is operating, if the back door is opened while the vehicle is stopped, operation of the rear window wiper will be stopped to prevent anyone near the vehicle from being sprayed by water from the wiper. When the back door is closed, wiper operation will resume.* *: The setting must be customized at any authorized Lexus retailer or Lexus authorized repairer, or any reliable repairer. ■ Customization Setting of the reverse-linked function can be changed. (Customizable features)

Yes, Ultra Wideband uses precise timing to know how far the key is from the vehicle. If the distance is too great (e.g. a relay attack) it would reject it. I'm not sure Toyota will introduce this to current vehicles outside of a full vehicle refresh or half lifetime facelift, but it could do on a normal yearly update.

You can always adjust the sensitivity, or do you still find it too sensitive on the lowest setting?

What's the reading once in Ready mode? I would expect to see 14.4 v and therefore you could calculate the gadgets inaccuracy. Ideally your 12 v battery without load should be reading between 12.6 and 12.8 v if fully charged. 12.2 v is too low, even if you have a 0.2 v discrepancy so you may want to give it a good charge.

Tyres are always a compromise. UUHP or just UHP are designed for maximum grip in warm weather. Comfort, noise, wear rate, cold performance and price all suffer to achieve maximum grip. They are suitable for Lexus F cars, and are fitted as standard, for other Lexus models there are far more appropriate tyres on the market.

Rolling codes don’t help with relay attacks, only replay attacks. Relay attacks aren’t as common now because people are aware to keep their keys save and many modern vehicles have keys that automatically turn off if there is no movement (except Toyota/Lexus who will still sell you a known vulnerable vehicle).

Nothing to suggest it isn’t vulnerable and it is essentially a RAV4 underneath which is vulnerable.

Series IV RX uses a flooded battery, as with all the current Lexus models (UX, ES etc.). The previous series III RX450h uses an AGM battery. Before that the series II RX400h used a flooded battery.

Fuse ECD NO. 2 in the engine bay (10 A) provides power to the air flow sensor (and other sensors).