Under the steering wheel ,covered with black cover with two screws
The Mercedes Benz ML320 has been produced since 1998. The Mercedes Benz ML320 is still in the lineup in 2010 for Mercedes.
2000
The diagnostic plug you mean? it should be either in the foot well of the driver or passenger side it looks like >>>http://www.dtdauto.com/efiscanintro_e_files/image057.gif<<< 16 pin connector as standard.
Take it to the dealer.
High maintenance costs
what kind of special transmission oil for 1998 mercedes benz ml 320?
A 1998 Mercedes ML320 uses Pentosin CHF11S. This is the exact power steering fluid that Mercedes-Benz uses in all of their vehicles.
For a 1998 Mercedes-Benz ML320, it's recommended to use synthetic motor oil with a viscosity of 5W-30 or 10W-30, depending on the climate and driving conditions. Always check the owner's manual for specific recommendations and any updates. Ensure that the oil meets the Mercedes-Benz specification, typically indicated by the MB 229.1 or 229.3 rating.
These vehicles take a special mercedes benz rear wiper blade so since you have to go to the dealer to get the part, ask them for the procedure too.
To disarm the alarm in a 1998 Mercedes ML320, insert the key into the driver's side door lock and turn it to the right to unlock the door. This should deactivate the alarm system. Alternatively, using the remote key fob to unlock the vehicle will also disarm the alarm. If the alarm persists, you might need to disconnect the vehicle’s battery for a short period to reset the system.
The remote wire, on the majority of vehicles, is blue. Also, you can tell the difference because it is usually smaller than the other wires. It may be black.
The data link connector (DLC) on a 1998 Ford Laser is located under the dashboard, near the driver's side. It is typically found above the brake pedal, close to the steering column. The connector is a 16-pin plug that allows for diagnostic tools to interface with the vehicle's onboard computer system.