Service indicator

[colef]

My service indicator has been telling me i need a service A for the last 10k miles yet when it hascounted down to approx 400 it changes to service B

Why?????

 

[Brian WH]

My service indicator has been telling me i need a service A for the last 10k miles yet when it hascounted down to approx 400 it changes to service B

Why?????

Based on time as well as mileage mate.

Moved to engine section.