Passat Sedan L4-1781cc 1.8L Turbo (AEB) (1999)
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Heated Glass Element: Customer Interest
Electrical - One Or More Back Glass Defroster Grids Inop
64 10 05
October 8, 2010
2010637 Supersedes T.B. V640801 dated Mar. 18, 2008 due to updated warranty table.
Vehicle Information
Heated Rear Window, One or More Lines Are Inoperative
One or more lines of the heated rear window -Z1- (rear window defogger) are inoperative.
Technical Background
May be caused by small gaps in the individual lines of the heating element.
Production Solution
No production change required.
Service
Check and identify gaps in inoperative lines as follows:
^
Ignition switch ON, engine running. Heated rear window switch ON.
Heated rear window, identifying gaps
Detect which line is inoperative by touching your hand to each line.
^
Working lines will be warm to the touch. Damaged line(s) will not generate heat.
Once damaged line is identified:
^
Switch ignition and heated rear window OFF.
^
Visually locate gap (open circuit)
^
Mark this location with tape and continue to check other lines as necessary.
With gap(s) in line(s) identified, repair as follows:
Heated Rear Window line, repairing using Repair kit by Permatex(R), ITEM 09117 (obtain locally)
