Hi all,

Hope somebody can help.

My 19 plate Skoda Superbs heating is stuck on full blast, and is staying on after turning the car off.

I can't turn the fans down as fuse number 4 in the fuse box behind the glove compartment keeps blowing for the instrument panel where the fan speed etc is controlled.

I have tried a new fuse and it just blew again. The only way i've managed to get it to stay off is by changing the fuse, starting the car and turning the fans off and then removing the fuse.

Any ideas? I've done some googling but struggling to find an answer.

Thanks in advance.

When it stays on, is it switched to the Auto setting? If so, can you try turning it to manual when you do the procedure you mentioned and see if that allows you to control it manually? I’m not absolutely certain, but I think I read the heating / AC unit in the dash is fully self contained, so if there is an issue with the control system, that has to be changed. However, that might be subconsciously invented and therefore complete boolocks!

5 hours ago, numskull said:

When it stays on, is it switched to the Auto setting? If so, can you try turning it to manual when you do the procedure you mentioned and see if that allows you to control it manually? I’m not absolutely certain, but I think I read the heating / AC unit in the dash is fully self contained, so if there is an issue with the control system, that has to be changed. However, that might be subconsciously invented and therefore complete boolocks!

Thanks for the reply. I can't tell as the whole heating control panel goes off, all the lights etc.

Or do you mean after replacing the fuse? If so, then yes I can control it manually once I put a new fuse in.

Are you sure about Fuse 4? According to this thread https://www.briskoda.net/forums/topic/515242-fuse-help/ it's for the heated steering wheel only. Fuse 7 seems more likely, and is 4th along its row of fuses.

Something supplied by that fuse must be causing a short circuit and blowing the fuse which I guess causes the fan to lose communication from the control panel and default to running at full speed.

Unfortunately it's not going to be easy to trace or fix.

In the meantime you could pull fuse 14 which should stop the fan.

18 minutes ago, D402 said:

Are you sure about Fuse 4? According to this thread https://www.briskoda.net/forums/topic/515242-fuse-help/ it's for the heated steering wheel only. Fuse 7 seems more likely, and is 4th along its row of fuses.

Something supplied by that fuse must be causing a short circuit and blowing the fuse which I guess causes the fan to lose communication from the control panel and default to running at full speed.

Unfortunately it's not going to be easy to trace or fix.

In the meantime you could pull fuse 14 which should stop the fan.

Sorry, yes you're completely right, I haven't looked at it for a couple of days and had 4 in my head because it was the fourth one along. It is fuse 7, i'll update my original post.

I'll look at removing fuse 14 for now.

I was hoping it would be a common issue and could be put down to a failing part, i'm not even sure where to begin!!