Coolant issues

[Jamster]

Hi

118 D 2014

I have been having coolant issues for the last couple of months. Dash light come telling me low coolant got it topped up two late dash came on again saying the same topped it up again. 
Called my mechanic he carried out a pressure test head gasket test and water pump check all good. That was about a month ago yesterday dash came on again say low coolant. No leaks have been found. The car does 15 miles a day. 
Any ideas 

Regards

Jamster

Edited September 13, 2023 by Jamster
Forgot

[Greydog]

Morning James

Welcome to the Forum

First a question, when the "low Coolant" alert shows how much coolant do you need to put in ? If there are no leaks then it shouldn't need anything, over filling can cause damage

I believe BMW issued a Technical Bulletin on checking the Level sensor for your model 

Check the Internet or talk to a BMW Specialist or Dealer 

Dave

[Jamster]

Hi

Thanks for your response.