Replacing clicking Climate motor

[IT]

I've covered this before, but thought I'd put a bit more detail in.

The clicking noice happens at several minute intervals only on facelift models, and the noise will come from the 'dashboard' although deeper investigation might lead you to realise its actually the passenger footwell.

The good news is, its an easy fix, parts are cheap enough from a8parts so lets see how:

Firstly, remove the passenger floor mats, then wind the seat all the way back, and tilt the seat base so the front is up at its maximum position.



Remove the 4 screws holding the wooden plate, and the plate itself. Then remove the single crosshead screw that should be present in the red ring that is holding the transmission tunnel covers in. They can be hard to find in the carpet sometimes, but are often missing also though.



Heres the fun bit. Piece of cake if you follow this.

Shuffle the whole cover forwards around and inch whilst moving down an inch or so too. The goal is the get the tab in the red circle out in the clear. Note the bottom corner with the red arrow - Pull this out towards you to give space to manouver this thing.




And now continue to pull the bottom out feeding it under the front of the seat where there is ample room. Once the top is clear of the glovebox / dash area it comes out quite easily.




This is the offending motor. Its quite small, and held in by two small crosshead screws, circled in green. With a small crosshead screwdriver, remove the screws, and then the motor just pulls off quite easily.




And here is the replacement one ready to go in. Refitting of everything is reversal of removal...

[IT]

I missed a step off here....

Once the new motor is in place, its worth doing a 'basic settings' using VCDS.

Simply put, go into VCDS, then the HVAC module from the front screen.

Select basic settings - 4 and then where it says 000 - Hit go.

It will start a countdown from 50 down to 0 in the measuring blocks. When it hits 0, it has recalibrated every flap in the system by sweeping them top to bottom. It would also show up and other faulty flaps, as it did in my case, so I replaced that too - and reran the basic settings afterwards again

[S8PKP]

Just to dig this thread up again, I have clicks coming from what seems like both sides of my dash, is the other motor as easy to replace as this one?

Do you have to reset anything after doing it? I don't have VCDS.


any help appreciated?

[johnny_quattro]

I've just attempted to replace the motor on my car, which was demonstrating the annoying clicking behaviour. Obviously not THAT annoying as it's happened on both of the A8s that I've owned since 2006

After taking off the trim panel on the passenger side, I could see 3 motors lower down and one motor higher up. After turning on the ignition, I could hear the clicking each time. I repeated the procedure again after removing the yellow power connector for each motor but the clicking could still be heard? I then repeated switching the ignition off and back on again and felt the casing of each motor in turn to see if I could determine which one was the problem. It turned out (in my case) to be the top, almost inaccessible motor but not on the passenger side - it must be on the driver's side. I will check again in a couple of days when I can allocate the necessary time to this.

[YorkshireBloke]

Hi,

What happened?

Robert

[Adrian E]

I've just run basic settings on mine as I was getting intermittent noises.

It's flagged:

00604 - potentiometer positioning motor for air flow flap (G113)
09-00 - adaptation limit surpassed

Looks to be under the bonnet rather than under the dash, and attached to air flow flap control motor V71. Happy days....

[johnny_quattro]

Update - I didn't get round to looking at the driver's side due to a wave of apathy washing over me. Message to self - pull your finger out.