Diesel Cabin Heat Assist

[BumBle02]

Hi can I turn off the Diesel cabin heater manually as I do not need it in the south of England just use the normal heater thanks for any help on my 20007 CGV 2.8 crd

[QinteQ]

I'm assuming you have a Webasto thermotop, NOT a cabin heater. Left to its own devices it will just work if (1) its cold enough and (2) if you are at least 1/4 full of fuel, it warms the big cold lump of an engine, turn it off and engine efficiency goes down and fuel economy also goes down. If you really want it switched off get underneath the car and unplug the electrical connector near the unit, denied a power supply voltage it will go dead along with its brain. ((Its possible someone fitted an ex Erberspatcher airtop in the cabin - this does indeed blow warm air)) We all have to learn including me, all questions and answers are knowledge and that's why we use forums. Take care !

 

 

[BumBle02]

Thanks I now know it's for the engine I thought it was some sort of night heater I had one in my HGV. It comes on when you put on the heater to full I will leave it alone thanks again Qinteq much appreciated. Jeff

[QinteQ]

HiYa Jeff, all the control logic [high/low/duration/etc is in the heater itself, the only bit in your IPM [below] is the switch ON/OFF and even that is outside your control.