Code P0128
10-23-2016, 05:53 PM
#1
Junior Member
Thread Starter
Code P0128
I get the classical Engine light. After connecting to OBD II I got code P0128. My thermostat indicate more than 80 degrees. I search the forum but did not find anything how to replace the thermostat on R-350, 2012 Gas engine. Is any directions or anyone can upload some pictures? 
10-25-2016, 10:29 AM
#3
MBWorld Fanatic!
R350 has the M272 engine, so it's the same for any model with that engine. The thermostat is located top front and centre on the engine - I would check it with an infrared thermometer to make sure it's actual the thermostat and not the temp sensor that's gone bad.
11-01-2016, 06:16 AM
#4
Junior Member
Thread Starter
easy instalation
I end up replace the thermostat was real easy job. Did not drain all coolant as per Mercedes benz parts I was told that the antifreeze has no span life you can reuse it. I just drain enough from the radiator plug in buttom and then I add some more. I end up removing oli filter for fitting new thermostat.
Thank you
Thank you
