year 2000 e320 cdi heater boost switch question

[rumpelstiltskin]

You probably know whats coming up here,new owner just wondering if the heater boost switch(ive been told system probably doesnt work anyway)located beside the cigarette lighter should be illuminated when off,or illuminated when on??
Manual seems to suggest light on,switch is off?

 

[toby1]

Light on means it's off. It probably doesn't work, mine doesn't and I don't know of one which does.

 

[Naraic]

Mine doesn't.

 

[alexanderfoti]

2 Diesel 210's over here, neither worked on mine.

 

[bob 6600]

Neither does mine