Update Programming (Flashing) Transmission Control Module (TCM) For Harsh Shifting (PT01-07-05)

Publication date: 2007-07-05
Reference number: PT01-07-05

UPDATE PROGRAMMING (FLASHING) TRANSMISSION CONTROL MODULE (TCM) FOR HARSH SHIFTING

TECHNICAL SERVICE BULLETIN

Reference Number(s): PT01-07-05, Date of Issue: July 5, 2007

VOLKSWAGEN:

Touareg 2004

CONDITION

Update TCM software that addresses:

For V6 Models and V8 Models:

After extended highway driving a harsh 5^th gear to 4^th gear downshift is felt when slowing on an off-ramp.

For V8 Models only:

In heavy traffic conditions, when slowing to approx. 5 MPH and then accelerating, vehicle goes into gear after a brief delay (customer perceives this as jerky shifting behavior).

APPLICABLE MODELS

Model	Engine	Transmission
Touareg	3.2L V6 AZZ, BAA	Automatic
Touareg	4.2L V8 AXQ	Automatic

SERVICE

Tip:

The "Pass - Thru Vehicle Programming" process may overwrite any "TUNED" ECM/TCM programming.

A "TUNED" ECM or TCM is described as any ECM or TCM altered so as to perform outside the normal parameters and specifications approved by Volkswagen of America, Inc..

If you encounter a vehicle with a "Tuned" ECM or TCM, prior to performing the "Pass-Thru Vehicle Programming" procedure:

Your Service Center should place the vehicle owner on notice in writing, that their ECM or TCM was found to have been tuned, and that any damage caused by the tuning of the ECM or TCM (including any adverse emissions consequences) will not be covered by Volkswagen of America, Inc. warranties.
For any repair requested by the owner under warranty or outside warranty that requires Pass - Thru Vehicle Programming, which will automatically wipe out the "Tuning" program, your Service Center should advise the owner of the above and get Owner's written consent (see attached Control Module Tuning form) to the flashing procedure.

VEHICLE REQUIREMENTS

Battery MUST have minimum no-load charge of 12.5V (failure to maintain voltage during update process can lead to ECM/TCM failure)
Battery voltage must be maintained throughout procedure (always use an approved battery Charger / Maintainer).
Any appliances with high electromagnetic radiation (i.e. mobile phones) switched OFF.
No Stored DTCs, erase any stored DTCs.

TOOL REQUIREMENTS

Pass - Thru Vehicle Programming tool must be connected to the vehicle Data Link Connector (DLC) and is connected to an Internet connection (Persistent connection is recommended).
Approved Battery charger.
NOTE: Under no circumstances should the diagnostic connector or the Programming tool be unplugged during the Pass - Thru Vehicle Programming procedure (damage to the ECM / TCM can occur).
Any appliances with high electromagnetic radiation (i.e. mobile phones) must be switched OFF.

PROCEDURE

Follow on - screen prompts to update ECM/TCM to software level below.

ECM/TCM SOFTWARE INFORMATION

Control Module	Index	Updated SW Level
09D927750	K	0581 or higher
09D927750	BD	0582 or higher
09D927750	N	0578 or higher
09D927750	AQ	0903 or higher

After Pass - Thru Vehicle Programming has been completed:

Vehicle readiness code must be set.

Fig 1: Control Module Tuning Form