I've just got this issue too.  Mk8 (68 plate) blower fans not working.  All the lights come on, you can here things happening re. the air diverters, the compressor kicks in when you press the A/C button but the fan just doesn't turn,

I tried the Sync Reset  - DONT DO IT.  IT DOESNT FIX THE ISSUE AND RESETS TO USA SETTINGS.  NO DAB RADIO, JUST AM/FM and SIRIUS XM SATELLITE 😞

 

 

18 hours ago, JP1612 said:

Hi, so I'm having same issue with my 19 plate Fiesta 1.0 Ecoboost, and it's just out of warranty... luck me aye? Came to drive the car this morning after a cold night/cold morning and the blowers won't kick in. Checked the blower fuse, which is fine, yet to try the Sync reset, although very odd that that would affect the blowers?

Did it work after the Sync reset?

 

I am having the exact same problem with our Fiesta MK8 and doing a master reset of SYNC did not appear to make a difference.

My experience:

1. The car had been unused for 2-3 weeks.
2. When turning on the ignition, there was a brief "Your battery was discharged" or similar message on the screen.
3. The blower will not activate at all. The dial turns and lights up just fine. You can hear the valves (?) move about when switching between "feet" and "head" direction, but no air at all. Everything else works.
4. Most bizarrely (and this may just be a coincidence), but when opening the door with the engine running, the warning chime was different than the normal one. Not distorted or anything, but a completely different sound/melody. Testing again 10 minutes later and the chime was back to normal. Strange.

 

Just a thought, but in addition to the points made earlier in the thread about fan not operating in low ambient temperatures, I experienced similar recently having inadvertently switched on Eco mode. My post from another thread below:

 

On 1/13/2022 at 4:50 PM, Eric Bloodaxe said:

Just as a bit of a footnote. We popped out yesterday to do a bit of shopping and as soon as I started up something seemed very wrong - no fan output and when we got going the car was utterly lacking in acceleration. I was fearing the worst when I noticed the Eco symbol was showing on the instrument panel. Pressed the Eco button, the symbol went off and normal service was restored!

I certainly hadn't switched Eco on, but my wife is struggling a bit to lower herself into the seat at present (she's been waiting for an op on her back for over 2 years) and we concluded that she must have accidentally hit the button, which is nearest the passenger seat, as she got in.

 

18 hours ago, Eric Bloodaxe said:

Just a thought, but in addition to the points made earlier in the thread about fan not operating in low ambient temperatures, I experienced similar recently having inadvertently switched on Eco mode. My post from another thread below:

 

 

Thanks, Eric. That's a good point. Wasn't the case here, but that's certainly something to check.

Just a quick update:

They fixed it at the dealer, but gave a rather vague explanation. They basically said that the blower was fine and that the electrical components where fine, but had a loose connection to the blower motor. Strangely, they also mentioned that it might happen again and then I might be looking at getting a new blower motor.

On 1/4/2022 at 3:03 PM, JP1612 said:

Hi, so I'm having same issue with my 19 plate Fiesta 1.0 Ecoboost, and it's just out of warranty... luck me aye? Came to drive the car this morning after a cold night/cold morning and the blowers won't kick in. Checked the blower fuse, which is fine, yet to try the Sync reset, although very odd that that would affect the blowers?

Hi there, I know I’m a year late here but I’m now having the Same issues after not using the car for about a week, what was the solution?

Exactly the same has happened to me.

2018 Fiesta Titanium. No blower at all, shows blower speed on the sync3 screen.

All fuses are fine, the connector to the blower motor seems solid an engaged, Couldnt find any relays for the blower motor on the 2018 model, which seems odd to me.

Reset the sync using the power and seek method, reset using settings and master reset, then disconnected the battery for 15mins.

Nothing helps.

Is there anything else I can do? All the Ford dealer explanations seem rather vague.

Desperate here, unable to drive the car with windows misting, and the temperature below zero inside!

How is the climate module controlling the motor without a relay?

The car has only done 6kmiles, its almost brand new, so Id not expect it to fail so fast.

The only extra bit of information I have which might help someone help me, is that the blower stopped working after a period of solid rain for a week. I did see issues on earlier fiesta versions with snow etc getting into the motor/cabin filter area, but have not seen anyone mention this on the Mk8!

Its a PIG of a job to swap a blower motor, and the cost at Ford to do it would be significant, and maybe pointless if the motor is actually OK!

 

 

The commonest explanation in this thread is a loose connection. If the connector can be refitted by the dealer, it should be accessible so pull it off and wire the motor directly to the battery to check it.

Which connector though?

The one that plugs into the motor is large, and seems to be robustly plugged in with a latch too and super chunky wires.

Could it be there is some other dodgy connector from the Climate control unit which must be turning power on to the 40A fuse in the engine bay to activate the blower?

I couldnt even find a relay, so Ive no clue how the motor gets switched on and off.

Thanks I appreciate the reply.

Well those super chunky wires go to the fan so remove the plug and try putting 12V on it. That proves the motor good or bad. From there you check to see that the connector isn't loose on the motor pins etc. Measure to ground with a test lamp so some current is pulled and ensure the fuse is passing current. Then find a circuit diagram (Cardiag.com) and if you don't understand it, pay somebody who does.

Here is a link to the Ford wiring schematic. You will be able to fault find with a multimeter and a test lamp.

https://drive.google.com/file/d/1xLD83iKBN-r_quzJck5N3P9wk3e6EFR7/view?usp=sharing

Thanks Unofix. That will be Very useful.

Thanks for that electrical diagram, that was brilliant.
So the blower motor is controlled by the fan resistor pack, via PWM.
How can I test it with just a simple 12v but no PWM signal if providing 12v to the motor as a test to see if its definitely that.

 

 

Pwm can go from 0-100%. Applying 12 V directly is 100%. That is all you need to do.

I think I misread the diagram, the PWM feed goes from the climate control to the blower control.

Should be ok to test finally.

 

Thanks for everyones help.

I got a blower motor off ebay for £15 with a plug already on it, and some thick 40A wire off ebay also, and will make up a nice lead to plug in so I can test using a car battery from either outside the car or in the footwell.

At least then I will know for sure whether its the blower or not.

Really appreciate those diagrams, I can even get the correct polarity when making up my little test lead.

At least we can save time and expense of having a dealer throwing parts at things instead of doing an accurate diagnosis.

Just for anyone else, the PWM feed is the speed control from the Climate module to the blower motor controller (aka resistor pack), which then has only two beefy leads to the blower motor itself.

If its simply the resistor pack blown, or a dodgy connection from the climate module, this would be ***** wonderful!

I cannot understand how a car with such low mileage could have a knackered blower motor already. Maybe the quality really was bad, the are Bosch, and made in Hungary, which you would think would be pretty high quality 🙂 They make BMW engines in Gyor, so can't be all bad.

Guys I have an update on this and its good news, and I really hope that it helps at least one other person coming to this thread from the internet about failed Mk8 Fiesta Blower motors.

1) Using the electrical diagram someone kindly posted above, realised that the motor only had a 12v feed to it, and the speed control was done by a PWM signal between the heater controls and the blower motor controller/resistor pack.

2) I grabbed a used motor off ebay for £18 just to get the connector off it, as it still had it in the socket with wires cut. There is a 0% chance of applying 12v any other way IMO , the space is only enough for my small hands to unclip and clip the connector.

3) I made up a 3m test lead with the plug at the end, long enough to reach the battery in the engine bay.

4) I applied the 12v direct from the cars battery, AMAZING, the motor fires up no problem at all.

5) I make an assumption then that its either the climate module, the resistor pack, OR simply a loose connection between some combination.

6) I check the passenger footwell, and lo and behold I spy the resistor pack sitting right there in view, with two fat plugs and the smaller feed from the climate controls. You don't even need to remove the plastic side trim.

7) I unplug BOTH of the large connectors which are from main power and then to the blower motor itself, take them out fully, then reseat FIRMLY until both click satisfyingly.

8.) start engine, FANS come on and all works perfectly.

9) Tested all 7 speeds on the blower motor, all work fine, so double confirmation the pack and motor are ok, and simply was a loose or bad connection to the resistor pack itself.

Major money, hassle, time, dealer ripping car apart saved and avoided.

Over the moon.

 

Same problem on my '18 st-line x. Didn't drive it all of January and low and behold the blower motor isn't working (as well as the rear passenger door not opening - started working again this morning though 🙄). From this thread it seems like every icy winter people are having this exact same issue. I went to a local garage today and got a quote of £700 just for the labour of replacing the motor, the ford dealer quoted £1100+.

On 2/5/2023 at 10:58 PM, ColdLady said:

Guys I have an update on this and its good news, and I really hope that it helps at least one other person coming to this thread from the internet about failed Mk8 Fiesta Blower motors.

1) Using the electrical diagram someone kindly posted above, realised that the motor only had a 12v feed to it, and the speed control was done by a PWM signal between the heater controls and the blower motor controller/resistor pack.

2) I grabbed a used motor off ebay for £18 just to get the connector off it, as it still had it in the socket with wires cut. There is a 0% chance of applying 12v any other way IMO , the space is only enough for my small hands to unclip and clip the connector.

3) I made up a 3m test lead with the plug at the end, long enough to reach the battery in the engine bay.

4) I applied the 12v direct from the cars battery, AMAZING, the motor fires up no problem at all.

5) I make an assumption then that its either the climate module, the resistor pack, OR simply a loose connection between some combination.

6) I check the passenger footwell, and lo and behold I spy the resistor pack sitting right there in view, with two fat plugs and the smaller feed from the climate controls. You don't even need to remove the plastic side trim.

7) I unplug BOTH of the large connectors which are from main power and then to the blower motor itself, take them out fully, then reseat FIRMLY until both click satisfyingly.

8.) start engine, FANS come on and all works perfectly.

9) Tested all 7 speeds on the blower motor, all work fine, so double confirmation the pack and motor are ok, and simply was a loose or bad connection to the resistor pack itself.

Major money, hassle, time, dealer ripping car apart saved and avoided.

Over the moon.

 

I'll try this tomorrow morning and report back! Here's hoping 🤞

Unfortunately reseating the resistor pack connectors hasn't solved it. Looks like the motor's bad, since the local garage confirmed there's power going to it. After 25k miles I wouldn't expect such a major failure.

This has happened on our 2017 titanium this week. Never had an issue before. Local garage checked fuse, spoke to local Ford dealer.  Acted on their advice to start bt shopping 2 40 Amp fuses.. leave for 30 mins and try again.  No blower and steering lock on now.!! Went to collect by trailer today and wouldn't start!!  Then it would lock up!! Ford garage looking at it on Friday. 

Had a text from Ford Garage Burns of Congleton to say car fixed and collected this afternoon 3 days ahead of schedule.😊 Fixed by reprogramming the body control module. 

I have the same problem currently with my 68 plate mk8 ST. no air coming from the blowers. How do i try a sync reset, and how do i check the fuse? all lights are on as normal. The weirdest thing is that my stop/start has now started to work after months of it not working but the fans have stopped. Can anybody help? thanks

I got a Ford Fiesta Ecoboost 2019. The car had not been driven for a week and yesterday when I took it for a drive the blower don't work. No matter what setting I use and if I put AC on/off, no air comes out anywhere. What could be the problem? The weather is real damp just now so it's really dangerous to drive without it working. I checked the manual and there is a fuse (nr 21) behind the glove compartment. Should I check that one? Any other fuses? Should I just take it in for repair? I am far from a mechanic so maybe that's the best option?