[Taximatt]

Good Morning
I have a 2018 pde diesel and it has developed a diesel knock on idle the fault is very intermittent sometimes when it’s cold but mostly when the car has been ran all day when you turn the car off and leave it for 20 minutes it seems to be ok when you restart it as it’s used as a taxi. My local garage can’t find what the fault is he seems to think that it needs a software update but before I go to a main dealer I am hoping someone may have the answer .