Hi I'm a Newby,
Took my 2015 x1 in for recall to replace egr, didn't use the heater for a few days when I did it was stone cold, on inspection no water in reservoir, topped it up and it went empty again put another litre of coolant in went down again, the heater did work for a day then cold again I have discovered the egr is coupled to the cooling system can't see any visual leaks, seem ominous, any thoughts anyone? Thanks.