Brake booster faulty Porsche Cayenne 2005

Asked by GuruZG7YG Dec 14, 2017 at 08:16 PM about the 2005 Porsche Cayenne Turbo AWD

Question type: Maintenance & Repair

When I press the brake a strange sound comes out,
like a vacuum? How can I fix it? There is brake
booster faulty message in the dashboard

2 Answers
34,750

charles answered 6 years ago

check to see if the vacuum line to the booster is good or possibly diaphragm went bad in booster.

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Zachary answered 6 years ago

Remove passenger side engine cover and unbolt the vacuum pump brackets two 10mm fasteners, unplug and disconnect spider hose. The firewall hose connection is likely to have a split at the joint. Wrap it with a self-fusing silicone tape and the message will go away after restart.

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