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Did the dealer claim that the rack was leaking or that it just had an internal problem with one of the valves?
They didn't specify. I spoke with my service advisor, who doesn't actually know anything about the car and just relays what the service department tells her.
Ok it is possible for a valve inside the rack to fail and cause the steering to fight against the direction that you try to turn the wheel. This will not result in a loss of fluid since the problem is located in the rack internally and also would not be something that could be seen by a visual inpsection.
The only way it would be able to be caught during the service is if the technician was able to experience the problem during a test drive. As far as trying to keep the problem from re-occurring.........the new part will likely come with updated parts internally to prevent any future problems.
One thing you can do to service the power steering system would be to do a flush approx every 30K miles. This will get clean fluid into the system which will aid in lubricating the internal seals.
Let me know if you have any other questions and I will be glad to help. Please remember to rate me at Excellent Service and Thank You for letting me assist you today!
Thank you for the information, and the suggestion to flush the system every 30k.