If it is set to "Auto", then the fans will not run until the engine is at a sufficient temperature to heat the cabin to the selected temperature.

 

wish it was that simple!

I wish I was that stupid and the problem was that simple ;-) Unfortunatly when I change it off auto and manually select a speed like 10 it still does not kick on for 10 - 20 minutes. :wall:

:music-smiley-019:

 

In which case then that is definitely broken! You should be able to control the fan speed manually regardless of engine temp etc

 

If you put the front screen heater on when you first start up the car does it fire up then?

 

To get it to the dealer to show him the fault, turn it off altogether until you get there

 

update?

Any updates on this? Every once in a while my fan simply refuses to turn on. This isn't a major issue unless it's cold, in which case the car fogs up.

It always rights itself after a variable period of time. I hate going to the dealer with a problem that's intermittent......

 

Perhaps it's the circuit that disables the fan and other loads when the engine is starting.

 

Forgot to post an update here - both the blower and the regulator were replaced under warranty, as the "appeared overheated" (as per the work order).

 

Cost for Fan and Regulator Replacement

I just paid the attached amount of $1,416.78 to get the A/C blower fan and regulator replaced on my wife's S5. I have a feeling I was ripped off by the dealership, due to my previous experience with my R8, when they damaged all 4 rims when changing tires, because I think they are trying to make the money back. Can anyone confirm the cost of this? I know where the fan blower is, but I have no idea about the location of the regulator.

Any information would be highly appreciated!

 

i have a fix for this if you codes show something along the lines for blower motor B+ short to ground...

i see you're in syracuse? if youd like to meet up and fix issue(assuming its relavent to the code above) then we could meet half way if you are willing to.

 

i have a fix for this if you codes show something along the lines for blower motor B+ short to ground...

I have 2010 S5 4.2L
I noticed the blower motor works and stops working depending on bumps. Example, blower was working, I drove over some train tracks, it stops working. Will start working again 10-20 mins later. Also if it is running it pauses and starts again when the car is rattled. Seems like something is shorting or losing connection, or overheating, but I would your experienced input.

Can you please PM or Post fix for this. Thanks in advance.
Here is my Vag-Com log of the errors

2 Faults Found:
01273 - Fresh Air Blower (V2)
009 - Open or Short to Ground - Intermittent
Freeze Frame:
Fault Status: 00101001
Fault Priority: 3
Fault Frequency: 47
Reset counter: 111
Mileage: 74070 km
Time Indication: 0
Date: 2015.05.30
Time: 13:42:47

Freeze Frame:
Temperature: 34.0°C
Speed: 0.0 km/h
Voltage: 0.50 V
Current: 0.000 A
Voltage: 12.90 V

01844 - Control Module for Fresh Air Blower (J126)
014 - Defective - Intermittent
Freeze Frame:
Fault Status: 00101110
Fault Priority: 3
Fault Frequency: 16
Reset counter: 111
Mileage: 75156 km
Time Indication: 0
Date: 2015.06.26
Time: 15:27:22

Freeze Frame:
Temperature: 35.0°C

 

Toronto area A 5 with the same blower fan issue problem , occasionally the cabin fan doesn't come on for 15-20 minutes , neither the manual or automatic setting will work the fan but it comes on by itself after a while . I followed this 2010 lewy 2x2m thread but any one out there with more on the topic ? Will a computer reboot help?

 

If your codes are like the one esquire posted, this is a somewhat easy fix. Just takes patience and $6usd(assuming you have tools and don't break anything)

You have to remove the blower motor housing.

Then dissassemble the housing to gain access to the blower motor. Now use the can of electrical cleaner/or MAF cleaner( don't use carb or brakecleen it doesn't dry quickly)

Then spray the motor to remove the carbon/graphite dust.

The reason this occurs is because the motor is a BRUSH motor which uses carbon/graphite rods to transmit electrical current to the stator. Since the motor is in an enclosed case. The dust accumulates and eventually causes a short... Hence the code. The second module code is a result of the first issue