C class Comand system won't store english language

[royfos]

My 2000 C class continually defaults to german language despite my constant attempts to store English metric or Imperial or instrument cluster language.
I'm hoping this is not a major fault and I'm hoping someone can help or advise. I read Pascal's posting about a battery defect and wonder if this might be a contributory cause?

Many thanks & best wishes to all from

Royfos

 

[marnix]

When you change the language to English, does the unit work in English until you turn off the ignition?
If it does, it is probably that you do not have a constant 12V to the unit.
This causes the unit to default back to factory setting once you take the key out of the ignition.