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Porsche 911 TURBO - 1989 Workshop Manual page 69

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Brakes,
Hydraulic
Parts
BRAKE
CIRCUIT
FAILURE
INDICATOR
(UNTIL
END OF 1983 MODELS)
Each of both brake circuits has a brake light
switch on the brake master cylinder, which
also functions as a brake warning switch in
cars up to the end of 1983 models.
The brake circuit failure indicator has to
be cancelled by disconnecting the battery
after repairing the brake system.
Beginning with 1984 models it is no
longer necessary to disconnect the battery,
since the brake indicator lamp (triple
chamber I ight) goes out as soon as the
brake fluid level in the tank has reached
the minimum level.
An indicator lamp (bottom part of a double
chamber light) installed in the instrument
panel comes on when a brake circuit fails.
Printed in Germany
47-12
Brake Circuit Failure Indicator

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