There are three intervals of ATF change for 722.9, 40k miles (4 years) if the vehicle manufactured before 06-18-2010; Or 70k miles (7 years) if the vehicle manufactured after 06-21-2010; From model 2016, 60k miles (6 years).
If washer pumps get old or defective by an electrical surge, they can not provide the power to spray and wash the windshield. An obvious indicator that your washer pump is failing that is no washing fluid spray out. with normal washer fluid capacity when you press the switch of the washing windshield. This part is controlled by the SAM, no fuse, no error code.
That's required every 60k miles or 6 years to replace the spark plugs in the MB maintenance booklet. To the NA engine of M276 DE35, there's a step to remove the intake manifold to reach the ignition coil in the WIS. But that must replace a set of intake plenum gaskets with more labor. Removing the ECU may make more room to reach the concealed ignition coil and spark plugs.
The vehicle's engine water pump is responsible for keeping coolant flowing through the engine. As water pumps get old the internal bearing can go bad causing noise and a coolant leak. A good indicator that your water pump is failing is if you see coolant leaking through the water pump "weep hole".
The high-pressure fuel pump is a durable part that is generally not prone to failure. Once a failure occurs, the replacement process is also a time-consuming operation. Here, the Mercedes-Benz workshop information system (WIS)'s documents are arranged in order of operation for your reference.
Replace engine oil & filter is routine maintenance per year or 10k miles by the MB maintenance booklet requires. There are two ways to discharge the used oil, extraction, or drain. In the MB's WIS: For the M278 engine, the used oil is discharged by the extracting unit, in order to improve the work efficiency of the workshop. For the AMG engine M157, the same structure as M278 is required to drain the oil from the oil pan. ...Details