A8 Sedan V8-3.7L (AEW) (1997)
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Switch on rear heated glass to -E87- (warning light in the button lights up).
Display on VAG1715 changes from approx. 0 A to smaller 25 A.
After approx. 10 minutes display changes from less than 25 A to approx. 0 A (warning light in the button lights up).
NOTE:
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A lower current can be displayed by radiating the current tool with rear window defroster shut off.
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For outside temperatures over 0 °C - E87- switches off the rear window defroster after about 10 minutes automatically.