JackMR

You can get the tool $15 cheaper on amazon.

According to Owners Manual this is one of the optional settings, but is says it can only be changed by the dealer.

For my 2011 RX350 this is normal operation: The switch under the handle will unlock all doors - including hutch - but the hutch needs to be manually raised.

If the shocks won’t help the lift mechanism in the roof may be damaged. It happened to me, the repair was about $1000. Fortunately I had Carmax warranty so I didn’t have to pay for it.

Weathertech are the best, made to fit like a glove.

Before disconnecting the car battery get a gizmo such as: VSTM OBD II Vehicle ECU Emergency... https://www.amazon.com/dp/B01MPY0DNI?ref=ppx_pop_mob_ap_share This will keep uninterrupted power to the computer during installation, so no subsequent resets are needed. Used it myself couple of months ago.

The Lexus and Toyota might be using same engine hardware. But isn't it concievable that the Lexus engine computer is tweaked up for better performance - e.g. spark advance? This may neccesitate use of premium fuel.

I installed a K&N lifetime air filter as I used this brand with success on my previous vehicles. It provides better breathing for the engine and does not invalidate Lexus warranty. All maintenance needed is cleaning and re-oiling the filter element every 50,000 miles. As for cabin filter, there is quite a few of after-market brands that are cheaper and perform just as well as OEM.

I have a 2011 RX-350 and the user manual calls for use of premium gas. I normally use middle-premium and the engine is quite happy. However not all middle-premiums are the same (they are a pump blend of hi-test and regular gas). In rare instances, I experienced a brief hesitation when accelerating from stop or low speed. All I needed is to top the tank with 93 octane and the throttle response returned to normal.

I believe the covers you are referring to are access to towing hook attachments. See your owner's manual.