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Autodata technical Issue 48 - Window glass drops when opening rear door on 2010 Volkswagen Polo

Autodata technical Issue 48 - Window glass drops when opening rear door on 2010 Volkswagen Polo

31 January 2022

Each month the Autodata team answers a common technical question and provides a printable document with technical diagrams to download and keep, exclusively for IGA members.

Q. A customer of ours with a 2010 5 door Volkswagen Polo is complaining that the rear door window glass drops abruptly when opening. We removed the rear door trim and found the window glass detached from the window winder mechanism. We reattached the window glass to the window winder mechanism but the car has now returned with the same issue. Is this a known fault?

A. The door window glass repeatedly becoming detached from the window winder mechanism is a fault known to us. It is due to the door window glass locating bush being dislodged or faulty. Remove the rear door trim. Remove the rear door window glass. Check the door window glass for damage and replace if necessary. Cut adhesive tape, available from Volkswagen parts department, into 6 mm x 55 mm strips. Wrap a new door window glass locating bush, available from Volkswagen parts department, with adhesive tape to a diameter of 13.4 mm (fig. 1.1.).

Fit the door window glass locating bush to the door window glass. Lock the locating bush in place with an expander pin. Refit the rear door window glass. Refit the rear door trim. Repeat procedure for the opposite side. Carry out operation of the rear door window glass to ensure fault have been rectified.

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