Mercedes Vito W639 Fan / Blower fix. When the control resistor pack fails typically you are left with the fan / blower maximum setting still working but no lower speed functionality. check out this video too: • Vito W639 fan fix No 2
This is an awesome tutorial! I am not really good at fixing cars, but with this video I made my heating work well again. Thanks a million for putting this together 😁✌️
I would recommend changing the cabin filter at the same time, as it could be very dirty which is what can cause the excessive load on the resistor pack. As the load builds, the current draw heats up the cabling which in turn blows the thermal fuse in the pack..... there is a chance you'll just blow the new pack in a short time if the filter isn't replaced....... which is what happened to me 🤦🏼♂️
Hi , thank you for a very informative video. Would this fault cause cold air not blow out? I have just topped up my ac gas and it’s not getting ice cold . My fan only works on 5 .
If the fan only works on "5" I'm pretty sure that your resistor pack has blown. It's very likely that your AC compressor clutch is linked to this too (I'm not 100% sure on that though, but seems logical).
Usually when the resistor pack goes you still get full power as the max power setting doesn't go through the resistor pack. Check that you have 12volts going to the main connector for the blower motor when you have your switch set to maximum. If you do, then it suggests a motor issue (stuck due to seized bearings/bushings or warn/dirty brushes or commutator. If no power, then perhaps its a switch problem. Then also, whilst I haven't checked, there may be a dedicated fuse for the circuit in one of the fuse boxes on the vehicle. I hope this gives you a few options and good luck.
There is a chance you may have blown the new resistor pack straight away.... I've since learnt that if your cabin filter is very blocked that is what can cause the pack to blow as it causes such a strain on the wiring, the heat builds up and blows the thermal fuse in the resistor pack. The cabin filter is changed via the plastic access panel between the wind screen and bonnet between your wiper blades.
@@fixitfallows thank you so much. Your video helped me a lot. Especially the tip about putting the rear of the cover in first. That bit too me ages to get back in!
