Just did oil changed, reset service code, and got new workshop code WOW for the next oil change. I search around and I don't know what it means. It is 2018 GLE43 AMG at around 65K miles. Also anyone wants to through me a bone to change the V belt without removing coolant tubes/pipes/wet job. It is 15 minutes job if nothing in front of the belt, but for GLE43 the intercooler is major pita.

Just performed/reset workshop code 850D, Service code A0, Service 1, 3, 10 (A service, oil/filter, pano roof lube). The new workshop code WOW, Service code B1, Service 2, 3, 4, 15 (B service, oil/filter, brake fluid, trailer hitch). For my practice, I change oil/filter twice a year -- in Apr and Oct. I always performed the service in the Spring and reset the service in Fall. It means that I don't reset service when I change oil in Spring and just perform the service. Like, I will change oil, brake fluid and check/inspect trailer hitch in next Spring and I will reset the service code in Fall when I do oil change again.

For those who need to know the service codes for all models, not just for GLE:
Service 1 A Minor basic service
Service 2 B Major basic service
Service 3 Engine oil and filter change
Service 4 Brake fluid
Service 5 Combination filter
Service 6 Dust filter (integrated in service B)
Service 7 Activated charcoal filter
Service 8 Air filter element
Service 9 Tilting/sliding roof
Service 10 Panoramic sliding sunroof
Service 11 Fuel filter
Service 12 Spark plugs
Service 13 Coolant
Service 14 Main coolant circuit
Service 15 Trailer hitch
Service 16 Parking brake
Service 17 Emergency call system battery
Service 18 Brake algorithm
Service 19 Diesel particulate filter
Service 20 Automatic transmission: oil and filter change (only NAG2)

 

What can you tell us about the workshop codes? Do they represent a collection of the service numbers, and are workshop codes universal or vehicle model specific?