Resistor pack is first option to try.It can be replaced relatively easily as it’s attached to the outside of the heater motor under the gloves box/footwell

I think the part number is 6Q0959263A

Thank you Mag571 👍 very much appreciated, I’ll post up the outcome 🤞 it’ll fix the issue. cheers Paul

I had two resistor packs fail (car under warranty) on a Jan 2019 Polo

First failure: 19/1/2021 (after almost exactly 2 years on a car that only does 5,500 kms/year)

Second Failure: 14/10/2021 (9 months later).

I thought I had a third failure (will check again later) outside of warranty but can't find any record of it, so maybe not, so maybe 4 years now since last failure, personally I think its a fault with the resistor pack, in over 60 years of driving with at least 4 cars in the family for well over 20 years, I never once experienced "fan failure", the fan only running on speed 4 when the pack fails is a requirement for all makes of car I think, safety concern, but at least you can keep the windscreen clear.

I would like to know the fan power readings when "They compared the current draw through resistor pack with two other cars and found higher reading on our car."

"Relay J59 was replaced as was deemed at fault", yet a failure again 1 month later. (mag571).

I took the readings off mine with VCDS after the first failure pack replacement and again after the second failure pack replacement and they were almost exactly the same, the readings, below, are corrected by subtracting 4.5A from the VCDS ones as the current draw with nothing on except the DRLs etc is 4.5A.

Speed 1: 4.1A

Speed 2: 6.4A

Speed 3: 11.0A

Speed 4: 17.2A

On my journey with this issue we had:

4 x resistor packs

1 x Relay J59

1 x “suspect” part wiring loom

1 x fan motor ( No paperwork for this)

So from memory, the 30A thermal fuse which is attached to the resistor pack fails first.

Then full battery voltage is applied to the fan motor “speed 4”

Your current reading are below the reading taken by my garage

My conclusion is the fan motor is overloading the 30A fuse on startup and blows,due to the motor not coming up to speed quickly enough or sticking

On my Polo you can put your fingers in (ensure ignition switched off) with the resistor pack removed and spin the fan with your fingers.

I will check those fan readings again shortly.

Of course, one might ask, why has mine not tripped for years now and it tripped twice early on, the second time, within 9 months of the first, the fan characteristics have scarcely changed?.

Fan Test just now.

Fan Setting/Battery Volts/Amps/Fan Power Amps

0 12.12 - 6.9 0.0

1 12.03 -10.89 3.99

2 11.99 -13.26 6.36

3 11.92 -17.38 10.48

4 11.82 -24.55 17.65

Quite similar to the above and very close to the readings I got a few years ago on a now 21 year old Polo, still in the family, original resistor pack.

Of course, the fan power with the engine running will be higher as the battery voltage will be in the range 13.3/14.9V.

Edited 25 November, 202525 Nov by Johngerard

Good morning, Thank you both for your very detailed description, it makes interesting reading, I too have never had a heater fan stop working on any car I’ve owned this includes 2 previous Skoda’s a Fabia estate and a Citigo both absolutely brilliant cars and absolutely no issues during ownership, I’m hoping to have a go at replacing the resistor pack tomorrow and will post up my findings and results 🤞 Many thanks Paul

1 hour ago, Scotty68 said:

Good morning, Thank you both for your very detailed description, it makes interesting reading, I too have never had a heater fan stop working on any car I’ve owned this includes 2 previous Skoda’s a Fabia estate and a Citigo both absolutely brilliant cars and absolutely no issues during ownership, I’m hoping to have a go at replacing the resistor pack tomorrow and will post up my findings and results 🤞 Many thanks Paul

Hi Paul,

Where did you source the replacement resistor pack you hope to replace?, I ask because I couldn't source the proper one, (as a spare), from anywhere else except from the main dealer, I will just get one there if/when another one packs up. I'm convinced this problem has something to do with the resistor pack, maybe this thermal fuse which is generally found to be blown. I don't think anything has changed for decades in the fan speed control (for VWs) at any rate as you can see by the figures, below, for a 9N Polo. I was surprised to see that resistors are still being used in this day and age for speed control, I seem to remember that years ago Ford were using PWM (pulse width module) control, wonder if they still are.

2005 Polo 9N Fan Loads. Amps.

speed 1 5.5
speed2 8.1
speed 3 12.0
speed 4 18.0

John

Edited 26 November, 202526 Nov by Johngerard

Good afternoon, SUCCESS that has fixed it, I got the part from Skoda Parts Direct part no 2Q0959263A it was expensive but it’s fixed it 👍 the only issue I have now is the airbag warning light is on, I’m assuming because I unplugged it on the side panel, in fairness I didn’t really need to unplug it as the wire was long enough to for me to undo the 2 panel clips but thought it best to get it out of the way, all in it took about 30 minutes from start to finish, I don’t suppose anyone has any idea how to reset the airbag light please? Many thanks for all of the comments above, it’s very much appreciated, cheers Paul

Try switching airbag on/off via the switch

Failed again , 5th time !

At garage waiting repair

Mines gone again going to the garage next week so this will be the 4th.

Had 2 go in the last year. 3 in total and one new blower motor.

Maybe this is an odd question but, do you switch your fan to position 4 when first using the heating on a cold day?

3 hours ago, Mag571 said:

Maybe this is an odd question but, do you switch your fan to position 4 when first using the heating on a cold day?

Only when clearing the ice off the screen..

just a thought?

2 hours ago, Mag571 said:

just a thought?

Anything is worth a try as Skoda do not seem to have a clue why they fail. Luckily I had just got the extended warranty when it was on offer.

New fan motor ( second) and fifth resistor pack

Car will be sold before warranty runs out

On 23/01/2026 at 17:24, Mag571 said:

New fan motor ( second) and fifth resistor pack

Car will be sold before warranty runs out

I don't blame you. Ridiculous having five go in that time..