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Chassis System Failure


Vehicle Information: Model : Cayenne S; Year: 2009; Mileage: 793;

I had a Chassis System Failure come on three different times in the last two days. I took the car into the dealership and was told the power block that is associated with a sway bar had an error code that they could not reset. The service rep. said they have to replace the power block but could not tell me if the power block had failed, or if there was a problem with the chassis. What is the power block and what is its function in the chassis system? How is it related to the sway bar?

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