power steering pump on 2004 Volkswagen Passat

On my afternoon drives home, only during the summer, my power steering goes out and in. when the weather is cool outside it always works no problem. Any help?

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1 answer
I think either the drive belt is slipping or the power steering pump is failing. It's also possible it doesn't have the correct fluid in the system. A VW specialist could help you with this one.
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