I have noticed that frequently my nav screen does not change from

day to night brightness and vice versa also when I exit from an

underground car park into daylight it takes much longer to switch

from night to day brightness.

When I switch the stalk from auto to 'on' the brightness changes

immediately.

I can only imagine that the sunlight sensor is 'lazy' and therefore I

have a replacement on order.



BREAKING NEWS:

Just discovered that the sensor is the small one which has the flashing secrity LED!

I have now done a little test and to do this I made a cap using a plastic bottle cap

3cm dia x 1cm high and covered in black tape.

The test was:

Sat Nav screen brightness set to 'auto'

ignition 0n

Placed cap on sensor and screen went to 'night' in 3 seconds.

Removed cap from sensor and screen went to 'day' after 30 seconds!

Yes it's lazy!



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