e36 obc problem help!!

[xarism3e36]

hallo i have a problem with the big obc in e36.
the outside temprature shows in fahrenheit and i want to change it to celcium.how can i do it?
also the gas consumer shows always o.o zero and range shows wrong.if i have 50 litres it shows 999+
what can i do about it?
thanks.

[karlos328i]

try resetting it?

[xarism3e36]

i make it but nothing hapenned.something else?

[karlos328i]

the temp is very easy to change . press the temp and then press the button 3rd from the right at the bottom. that should change it if it doesnt your obc could be on its way out.but i suggest you google your problem first?