Just like to ask if anybody on here actually knows about the supplemental heater on My ML-I 580. It is fitted under the left door and is supposed to come on with the controls on the steering wheel, according to the MB handbook. You can put it on some time BEFORE you need to drive, to warm the engine and heater system before you start. They give instructions as to how you do it but nothing comes up on my dash as to what the thing is supposed to actually do and the controls have no mentions. There is a switch by the left knee which will start it but only when the engine is actually running. It is listed by Hymer as a supplemental heater and cost a load of money as an option.
MB use it as the handbook states as a preheater. What am I to do with it do you think Hymer had the ECU controller changed to run only as an extra heat source as the engine runs cool in Winter. If so would MB dealer be able to reprogram the ECU to run it properly.
Anybody else got one on their van and if so does it work only that way. The Dealer knows nothing about it and didn't know it was even there. I might find I am the only one with one on their van.
MB use it as the handbook states as a preheater. What am I to do with it do you think Hymer had the ECU controller changed to run only as an extra heat source as the engine runs cool in Winter. If so would MB dealer be able to reprogram the ECU to run it properly.
Anybody else got one on their van and if so does it work only that way. The Dealer knows nothing about it and didn't know it was even there. I might find I am the only one with one on their van.