Fan control heaters not working

Climatronic or just dials?

Climatronic has a small electronic control unit mounted next to the fan. The Climatronic unit will give you some diagnostics if it detects a component fault.

The fan speed dial is an electrical switch, connected to a series resistor pack mounted underneath the blower. Your problem might be due to the switch contacts but is more likely to be the resistor pack. You can test the pack with a multimeter.

Before we go any further, this is the Leon forum so I assume we're talking about a Leon here and not the Ibiza2000 that your forum ID might otherwise lead me to assume?

Manual dials means that the cabin air blower speed is controlled by a resistor pack attached to the bottom of the blower itself. The blower is on the offside, deep behind the dashboard and under a cover. It's covered in both of the Haynes Golf/Bora manuals (3727 or 4169) that are good for almost all Leon I and Toledo II maintenance.

A bundle of wires goes from the fan speed dial to the resistor pack. The resistor pack is just three resistors in series, and the switch connects power from the fan fuse (25), through the resistors to the fan motor. Setting 4 (full speed) bypasses the resistor pack and connects the motor to power directly, hence it is a good bet that the resistor pack or the wiring or connectors to it are out of order.

You could start by metering the resistance between the wires that connect to the switch contacts.

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The resistor pack has an overheating fuse built into it. If this has blown you need to look at the fan motor and see why it might be getting too hot.


The heater control dials are lit by a bulb or an LED mounted behind the fan speed knob. It's apparently quite difficult to extract, needing pliers padded with a cloth or something similar. If you have a bulb in there you can replace it but it is well buried and will need needle-nose pliers (and a bit of care) or a tubular bulb extractor

What's going on when you have climate control that runs at one high speed?

Take off the glove compartment and it's big red butt is staring you right in the face, to the right of the fan motor. Hope this helps.

Just get your torx bits out and start unscrewing, there are quite a number to undo. Just keep tugging and looking you will find them, there are no secrets. You can get it lying in the footwell without disconnecting the airbag switch.

Grow a pair and get in there

Ibiza2000 said:

Right gonna sound thick as fcuk but anyone got a diagram or link or can explain to me how to remove my glove box plz? I have the one where I can turn airbags on and off

Click to expand...

few at the end remove the cover one bottom right and a few when you open the glovebox and look up

Four! about 10 to find yet then! Yes, the key hole will come away too but you don't need to unplug it from the wire loom.

yeah open the door and there is a cover the same as the fuse lid on the opposite side of the dash, pull that off and remove the ones you need too, you don't need to remove them all.

Bloody hell that's some water damage there.
I'd be getting a spare from a scrappy and wiring it in.

That is or has been very wet, possibly from a leaking pollen filter. If the leak isn't fixed already, fix it or you'll just have the same trouble all over again.

The burned-out yellow wire is the source of the problem, of course. Here's the diagram of the wiring to the fan motor and resistor pack.



The yellow wire being burned out means that the resistor pack is disconnected. You will have to open the plug or get the connector out and remake the connection.

To get the old resistor pack off you need to drill through the rivets next to the tubular component (which is the heat-sensitive fuse). Mount the new pack with self-tappers through the rivet holes.

There will be locking clips that need to be released - from looking a the photos, I'd guess it's those tags that go through the "handles" of the connector plug. If it's still stuck, use a penetrating oil spray such as WD-40.