wharfhouse

I recently bought an IS 300h Executive 64 plate and also noticed the nav screen didn't dim at night. Reading everything I realised it should and so went on the hunt for the settings but couldn't find the option to have it dim at night - it just stayed in day time mode. Turned the headlights lights on and looked again and still couldn't find the option. Eventually I discovered that the option only becomes available when it is DARK outside - it has nothing to do with switching the headlights on. I covered the light sensor (left hand side of dashboard) and hey presto the elusive setting was in the menu during daylight and I could switch it on and off and all works now. I just post this as it frustrated me for a few days trying to get this to work... I would have assumed the factory default is to dim at night but as my car was purchased 2nd hand maybe it had been changed.