A & B services
 

What is A & B service on a glk350

a service is to be done every 10K and service b is done every 20k. a service is oil and filter change and a check of battery spare tires, and a visual inspection.

b service is a oil and filter change and a cabin filter replacement along with the inspection and battery test and spare tire check and clean out water drains and clean hood hinge pockets.