Resetting the V71 recirc flap on VAG COM

[octydan]

As title, I have the dreaded V71 noise and I have heard of people "resetting " the position with VAGCOM. How would I go about doing this?

Dan

[Lew_VRS]

Hi pal.

The code thrown is:

01274 - Air Flow Flap Positioning Motor (V71)

This seems to happen randomly on MkIVs and B5 Passats with climatronic. Apparently it's due to the flap sticking after recirculation mode is turned on.

The Bentley Manual says this about it:

Short circuit or open circuit in wiring or connectors to air flow flap motor -V71-

- Check -V71- using function 08 Read measuring value block

- Repair wiring and connectors using wiring diagram

To fix this with Vag-Com:

Log into vag-com, open module 08 (HVAC).

Follow the adjustments ValveFloat outlined here, involving block 002.

Allow vag-com to calibrate the flap, ticking should be gone.

If that fails and you have to replace the physical motor:

The part number is 1J1 907 511 A, costs around $120. Here's the Bentley blurb for it:

- Remove glove box.

- With screwdriver, carefully unclip air flow flap rod from lever.

- Disconnect electrical connector.

- Remove screw.

The flap motor is connected to the evaporator housing portion of the heating and A/C unit. To prevent damage:

- Lower flap motor and at the same time pull off fresh air/recirculating air flap shaft.

Replacement flap motors are supplied in the "recirculating air" position. To ease the installation, first do the following:

- Connect electrical connector to flap motor.

- Switch on ignition.

- Operate button for fresh air/recirculating air.

When the center position has been reached:

- Disconnect electrical connector from flap motor.

- Insert flap motor in fresh air/recirculating air shaft.

If the flap motor cannot be attached to the fresh air/recirculating air flap shaft, remove fresh air blower -V2-, and attach flap by hand.

- Turn flap motor and tighten bolts.

- Attach operating rod for air flow flap.

- Initiate Basic setting, function 04, Climatronic, OBD.

reproduced from VWVORTEX

hope this helps.

Also could you let me know how it goes, mine has recently started doing this so hopefully re-finding the position of the flap could stop the clicking. Worth a go before i get skinned knuckles lol

[octydan]

Cheers Buddy, will give it a go this weekend

[Lew_VRS]

Let me know how you get on, me and a guy from here tried to do mine at the weekend but had no luck, we measured the values and they were roughly 1 out when open and both recirculating. Could not find anywhere to let you re-set the valve. If you find it could you take some pics or a little write up for me?

Thanks!

[Lew_VRS]

http://briskoda.net/forums/topic/179840-altering-specific-blocks/page__pid__2161948__st__0entry2161948

that's my thread about not being able to re-set it

[octydan]

Just read your post LEW_VRS. I have'nt had a chance to try it yet. Will report back once I have (or possibly if it doesnt work)

[Lew_VRS]

thanks mate, no worries Good Luck!