Owners/service Manual problems of the 2010 Lexus RX350

The "engine maintenance required" light will not reset anymore after an oil change. . . Even after you follow the steps in the users manual. It used to work because I've done it before. Now, no matter what I do, it won't reset.

Nav system manual entry is disabled when car is in motion. Forces user to use voice commands. Voice recognition is poor - has difficulty in recognizing words such as montreal, ottawa. Street names have to be exactly for example avenue main, if main is said it will never find it. Does not have the option of selecting intersection when driving. All this make the nav system a safety hazard. Driver becomes distracted trying to get the entry into the system. Slows down, drifts in lane. This is more dangerous than allowing the driver to enter data manually. There is an after market over-ride available - which the service manager says, if installed will not void warranty. But from a safety perspective, Lexus should offer a usable system or refund users their monies and disable a dangerous feature.