AlMuhairi

Most of the wind noise fix has been discussed on other lexus forums. try searching for jmcrany wind noise fix.

I think only the LWB has those but some SWB may have them too.

The air filter in the trunk is only available in the LWB version equipped with separate a/c in the back. The other one is in the glove compartment and two under the hood. Once you replace the filters, simply press the AC OFF button while pushing the ignition switch with your foot off the brake to reset the AC reminder. Make sure you hold the AC OFF button for at least 4 seconds and the system will reset the reminder.

I am not sure if there is a solution. Gulf Region navigation is DVD base and USA is HDD base. Hence, the way they are loading the upgrade is different. Unless you can somehow upload the DVD info to the USB drive that is needed to upgrade the USA region navigation. You would need a SST, the navtool from lexus, you can use that to upload the maps to the navtool and to the car using your PC. However, it cannot be done because it requires a security code (different for each car). The security code or key is only available to Lexus dealers at the moment. I have the whole procedure on how to upload the maps to the HDD navigation but without the key, its useless.