button on ign switch? (1 Viewer)

[Chris51]

What does the button on my 2007 Relay x250 do and how to use it ?

 

[pappajohn]

It used to switch on the parking lights when key removed but fiat found a better use.
Trouble is I can't remember what

 

[GeoffnDee]

If it is a red button it may be a starter battery isolator , If it is , there will normally be a control box on the starter battery negative terminal

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[TerryL]

2007 would be for the parking lights. Fiat changed this to a battery disconnect a couple of years later - a friend had a 2012 Ducato with this feature, but then you can't arm the alarm system.