Stop Start not working

[Cameron1960]

Hi, my stop start function is intermittently working. AC isn't on, its happening when engine is warm / cold. Break peddle pushed down! So no rhyme or reason why its not working properly, any ideas?

 

[WelshGas]

Hi, my stop start function is intermittently working. AC isn't on, its happening when engine is warm / cold. Break peddle pushed down! So no rhyme or reason why its not working properly, any ideas?

Stop/Start tends to work or you get an error message on the MFD.
If it only stops the engine occasionally then it is probably working but not all conditions have been met for an Engine Stop. Ambient temperature, Battery state, Headlights, Trailer status.
Everyone of the boxes has to be ticked or it won’t Stop the engine.