Hi everyone been a while since I posted on here

My car has decided that the heating will only do full power.

So on 1 nothing

2 nothing

3 nothing

4 everything....

Anyone had this before? If so what's the solution?

Heater resistor pack

Common part to fail. It can just be a defective part, or it could be

1.) The blower motor is failing/needs lubricating

2.) The pollen filter is blocked & preventing enough air flow reaching the resistor pack to reach it.

3.) There's a wiring issue somewhere

Not really contributing, (as with many of my posts) I just wanted to say I feel your pain. I have a grill that only works on full and all it does is make my food black

My focus had exactly the same thing. The mechanic put it down to water ingress causing rust on the spindle/bearing of the fan causing friction that eventually wears out the heater resistor at the lower settings and this friction needs to be overcome by the faster speed of no. 4 on the dial. Eventually no. 4 wont be powerful enough to overcome the friction and it will stop all together.

He gave me two options. Dismantle the dash to get to the seat of the problem- mega bucks,

or

New resistor pack.- much cheaper but a temporary fix. So I took the path of least resistance. (bum bum)

It lasted about two years until it went again but it was in the spring so I left it like that until I got rid a couple of weeks ago.

Google it as it is quite common.

Then again Im no mechanic and he could have been blagging me, but it did the trick temporarily

I recently stripped out my blower motor and it was rusty as. Penetrating fluid and some oil, good as new.

The reason no.4 will still work is because there's no resistor to blow. Well.. there is, but it's such a low resistance that it doesn't heat enough to fail. The other 3 resistors will have died.

Sent from my HTC One_M8 using Tapatalk

Iirc there's multiple fuses for it (low and high current for low/high). Worth checking in case one blew.

Any idea which fuse?

If I'm right (probably not - I was probably thinking of the air con fuses); it should be listed in the manual

Easy fix, but first check the heater fan motor as above, bearings can get sticky and blow the resistor.

Resistor pack is either behind the glove box or up in front of the heater box above the clutch pedal, either get a new one or get a resistor from Maplins (80p i think) and get soldering, worked a treat on mine, theres a how to on the net somewhere, possibly even here

Here you go. Should answer all your questions.

https://youtu.be/BXuAFkWNVEI