light AUDI A4 1998 B5 / 1.G Rear Window Heating Electrical Testing Workshop Manual

01-155

- Start engine.

- Switch rear window heating on via A/C control
head -E87- (indicator lamp in button lights up).

Specified value: The display on VAG1715 will
change from approx. 0 amps to less than 25
amps.

- Wait approx. 10 minutes.

Specified value: The display on the VAG1715
will change from less than 25 amps to approx. 0
amps (indicator lamp in button goes out).

Notes:

The current probe may be influenced by stray
current which could cause the display to show a
low current reading when rear window heating
is switched off.
The A/C control head -E87- will switch rear
window heating off after 10 minutes.
When the outside temperature is less than 0 C
the heating function of the rear window will
remain on until the ignition is switched off (it can
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