Hi

I have a C180 2000 modell. In my display there is now a wrench + clock and it is counting down days. i need to know if I need a service A or B, my manual is in german and I have tried translating the relevant part, but my car doesnt seem to differenciate between the service A and B light, it is just a wrench.

The manual said something about 22000km between service a and b. My service manual show the last service b was performed at 45000km I am now at 75000km.

This might mean i need a service B, but when my light indicator doesnt say A or B, how can I know for certain? before the A and B light were standard, how did people tell the different?