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mike switzer
mike switzer,
Category: Ford
Satisfied Customers: 611
Experience:  lead diagnostic tech at Aamco
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Every once in a while mygets a 911 Assist Fault message and

Customer Question

Every once in a while my*****gets a 911 Assist Fault message and all sound is muted from my car. It has happened several times now. What is causing this problem
JA: Are you fixing your Focus ST yourself? What have you tried so far?
Customer: I took it to the dealer and he told me I needed a new amplifier for $850
JA: Anything else you want the mechanic to know before I connect you?
Customer: It stays muted for several weeks and then comes back on and has been on now for 2 months
Submitted: 4 months ago.
Category: Ford
Expert:  mike switzer replied 4 months ago.

this is a common issue on this year range and i require replacement of the amplifier unfourtunately. the dealer was correct in their diagnosis.