Audi S5 owners have reported 2 problems related to power steering failed (under the steering category). The most recently reported issues are listed below.
Electric power steering fails with either water infiltration into the controller, or with severe cold weather. This issue is known by Audi USA by they are refusing to address the issue. In mn in the month of 2/2019 3 Audi dealers each told me that they each replaced 20+ steering racks due to this issue. This issue cause the electric assisted power steering to fail causing the car to loose all power assist for steering. This could cause accidents if you are not expecting your power steering to fail at highway speeds. The service adviser I worked with at one of the Audi dealers said this personally happened to him on 2 different cars he owned. There are reports of this happening in every Audi forum on the web.
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I was turning into a parking lot and the steering locked up in the middle of the turn and a message came up "steering defective. Do not drive". The dealer picked up the car and after researching informed me the power steering module had failed and needs to be replaced. They said they need to order parts from germany and it will take 2-3 weeks. Today is the start of the 3rd week and they are still working on the car.
| Problem Category | Number of Problems |
|---|---|
| Power Steering Failed problems | |
| Steering problems | |
| Lose Power Steering problems |