Two problems related to engine cooling system have been reported for the 1998 Mercedes Benz ML320. The most recently reported issues are listed below.
The vehicle coolant ended up in the transmission. Probable problem with hoses or connection.
1998 Mercedes Benz Ml320, 47k miles, harmonic balancer loosened, ground through timing cover and upper oil pan leading to rapid loss of oil. Could have been a safety issue to cars behind.