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Sentra SR: 2011 Sentra w/Rockford Fosgate audio. I purchased

2011 Sentra w/Rockford Fosgate audio...
2011 Sentra w/Rockford Fosgate audio. I purchased this car in Jan 2013 and I suspect that this problem was there before. The power electric assisted steering system creates an audio tone when listening to AM radio and, when turning the wheel, audio pulses (esp around 600 band). This noise continues AFTER engine is turned off then dissappears when steering unit clicks off. AM radio is the only thing affected. Where can I get assistance with this problem?
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Answered in 10 hours by:
10/20/2013
sprinkles08
Category: Nissan
Satisfied Customers: 23,523
Verified

Hello and welcome to JustAnswer!

 

The problem may be in the power steering motor, which is part of the steering column. When an electric motor starts to fail it can cause electrical interference and noise and cause problems such as you are having.

 

It may also be a poor ground to the power steering motor or the radio or amp. It would be a good idea to run a redundant ground to each of the components and see if that has fan effect on the noise.

 

An RF filter installed in the antenna would help the issue also.

 

You mentioned wanting to know where you can get assistance with this, if it's not something you're wanting to repair yourself then the best place to go would be a Nissan dealer.

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Customer reply replied 4 years ago

Thanks for reply but not much help at this point. Have you heard of this problem before? The tone is in the 400Hz range (guessing) which makes me think it is power supply related (as with a pulse width modulated type of motor/servo control).


I assume that the sound system is not at fault since FM, CD, USB and audio input are all clear as a bell.


 


The dealer checked ground, etc. and said nothing else they could do. I have until Jan 2014 to get this fixed under the original warranty.


 

Customer reply replied 4 years ago
Relist: Incomplete answer.
I haven't seen one do this and there are now TSB's or anything like that.

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Customer reply replied 4 years ago

I demonstrated to the shop manager the fact that a distant station (600AM) is perfectly clear until the steering unit is energized. Then the tone overwhelms the station's audio. A tech checked it for bad motor, poor ground, etc. and the manager said it now might be somewhat better (it's not) but that's all that can be done - I'll have to put up with it.


 


Your suggestion of a redundant ground makes good sense. What do you think my chances are of returning to the dealer to get this resolved? I'm getting too old to be crawling under the dashboard - and it's still under warranty until January.

The only way they could really rule out the motor would be replacing it.

If they telling you that the condition is normal then they should be able to demonstrate that for you on another vehicle, if another vehicle didn't have the same noise then you know your car has an issue for sure.

If the car is still under warranty then I would press the issue until it's either repaired or they can prove it is normal. It woudln't be hard for them to jump a redundant ground in at least temporarily to see if that helps at all. If the dealer you've been going to won't help then you can always go to another, your warranty is good at any dealer in the country.
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