Engine/Fuel - Turbo Lag/Poor Acceleration/Delayed Power

21 Delayed power transmission or slight hesitation from stop - A3 2.0 TDI with DSG

21 11 05

2025209/2

October 21, 2011

Supersedes Technical Service Bulletin Group 21 number 11 - 03 dated January 19, 2011 for reasons listed below.





Affected Vehicles





Condition
Customer has one or more of the following concerns:

^ Poor accelerator response

^ Slightly delayed power transmission

^ "Turbo lag"

^ Rough gear changes

During the test drive it appears that the power is transmitted with a slight delay when compared to normal.

Technical Background

The pulling away clutch of the DSG closes when the brakes are released and is therefore under load. The delayed power transmission is caused by a late and rapid boost pressure build-up.

Production Solution

Not Applicable

Service





1. Perform a visual check of the turbocharger. Make sure that the stud with clamp nut is on the turbocharger.





2. If the stud or clamp nut is missing, replace the turbocharger.

Note
Attempt to find the missing nut; it is often lying on the engine undertray assembly. Return the old turbocharger and loose nut to the Warranty Parts Return Center for analysis.





Warranty





Required Parts and Tools

All parts and service references provided in this TSB are subject to change and/or removal. Always check with your Parts Department and service manuals for the latest information.