2004 Mercedes ML-Class Owner's Manual - Page 220

Operation Engine compartment The display ------ flashes in the speedometer display, if a proper oil level check cannot be performed. If engine is at normal operating temperature, wait five minutes before repeating check procedure. If engine is not yet at normal operating temperature, wait 30 minutes before repeating check procedure. Checking engine oil level with the oil dipstick When checking the oil level the vehicle must be parked on level ground be at normal operating temperature have been stationary for at least five minutes with the engine turned off Wipe oil dipstick 1 clean. Fully insert oil dipstick 1 into the dipstick guide tube. Pull out oil dipstick 1 again after approximately three seconds to obtain accurate reading. i Perform the engine oil level check with the dipstick if it cannot be completed via the speedometer display ( page 220). In this case we recommend that you have the system checked at a Mercedes-Benz Light Truck Center. See the "Practical hints" section ( page 253) if the low engine oil level warning lamp in the instrument cluster flashes. i The engine oil level can be checked by either the oil dipstick or via the speedometer display in the instrument cluster ( page 219). The amount of engine oil needed is shown more precisely in the speedometer display. To check the engine oil level with the oil dipstick, do the following: Open the hood ( page 217). Pull out oil dipstick 1 ( page 221). Oil dipstick The oil level is correct when it is between the lower (min) and upper (max) mark of the oil dipstick. 220