How do you measure the transmission fluid level on an automatic Mercedes E220?
The automatic transmissions with no dipstick are supposed to be using a lifetime AT Fluid. Most of the transmissions still have a drain plug and filler plug. These are to use when the mileage crosses 100,000 miles, (MBz AT life expectancy is 100 Kmiles.) The permanent AT Fluid should be replaced at or near the 100 K. mileage point. In order to refill the trans, after draining the fluid, you will need to elevate the car, level the car, and refill the transmission via hand pump with permanent (lifetime) AT Fluid to the point where fluid just starts to flow out of the filler plug hole. Oil temperature of new ATF should be within 20 deg. F. of the slightly warmed, (engine not running), 120 deg. F. transmission in order to get the exact ATF refill quantity. Replace plugs and check for leaks and oil wetness. Correct where necessary.
