I'm renting a Fiesta, not sure which year. It has these buttons on the dash, what do they do?

Ford Fiesta dashboard buttons with a line and a curved line

Ford Fiesta dashboard button with a dial and a lamp

I already figured out that another button changes the color of the mood lighting nonsense.

  • Ummm.. push the buttons and see what happens? The second one appears to change the instrument cluster backlight intensity. – 3Dave Apr 11 '18 at 13:10
  • @DavidLively I pushed them and nothing obvious happened. Pushing random buttons in a car and seeing what they do is not a great strategy, though. – endolith Apr 11 '18 at 14:21

There are 2 of those function buttons.. They are the audio control buttons 1 to 4. They control various audio mode functions like switching between Radio/CD etc.

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  • I tried to add pictures to this but it didn't work – endolith Apr 30 '18 at 13:26

I don't know what the first one is. The second one adjusts the instrument panel illumination up or down.

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  • I tried that and didn't see any change, though. – endolith Apr 10 '18 at 16:35
  • The control and symbol are DOT-mandated here in the US. The adjustment might only operate when the headlights or sidelights are on, or be invisible in the daytime, or the control may be broken or disconnected. – DavidSupportsMonica Apr 10 '18 at 17:02
  • I tried again and it does adjust the instrument panel illumination, it's just not very obvious changes. What DOT mandate covers things like this? – endolith Apr 11 '18 at 14:20
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    Look in the FMVSS - the Federal Motor Vehicle Safety Standards. – DavidSupportsMonica Apr 11 '18 at 15:13
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    No idea; I assumed it was in the FMVSS, but don't see it either. It does appear on many cars. Shrug. – DavidSupportsMonica Apr 11 '18 at 18:58

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