possible auto gearbox issue

[w mckeown]

i have a c220 cdi 2003 model with 75000 miles. had service A at 60000 and told service b would be at around 72000. i am now on 75000 and service indicator still reads 1500 till service B. my issue is the auto gearbox has for the last 1000 or so miles been holding onto each gear for longer before changing up and when it does change it is not as smooth as it use to be. could this be due to the service B needs doing and does this service include gearbox oil change. or am i just worrying over nothing - cheers

 

[television]

The service due would not include the gearbox fluid. The chances are, the gearbox fluid and filter have never been changed, and indie can do this round £165. the fluid should have been changed at 40-50 k miles