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Rev sensor noise??? New one to me.

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Rev sensor noise??? New one to me. - 2/5/2008 1:10:05 PM   
fwilder

 

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I've got a 2003 S Type with rev sensors.  Until now they have worked great.  Recently the started to act up.  When I turn on the car a new buzz happens for ~10 sec or so.  It's not the beep beep noise you get from the back seat, but more of an annoying buzz from back there.  The button to turn them off is lit up.  I'm guessing they are off, but I can't seems to get them back on?  I've pushed the button with the gear shift in R, N, D and all I seem to get is that damn buzz agian.

Does this sound familiar to anyone?
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RE: Rev sensor noise??? New one to me. - 2/5/2008 4:08:22 PM   
FactoryJaguarTech



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The light being illuminated means there is a fault in the park aid system. If you are getting a buzz noise, it may well be the speaker being blown out. The speaker is under the rear parcel shelf I believe.
If you turn the ignition on, not running, and apply park brake. Put car in reverse and you should be able to hear the sensors clicking if you put your ear up to them. It is a sonic sensor. Some people can hear it, others cannot. However, if your reverse aid system is inop, you probably wont hear anything. I would start with the speaker as it is not supposed to buzz at all.


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RE: Rev sensor noise??? New one to me. - 2/5/2008 4:29:12 PM   
fwilder

 

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I check those things.  The sound I am hearing sounds like a purposful sound, not like a broken something.  I'll check the speakers, but I think they are okay.  I'll also listen for the sensors.  Thanks.

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RE: Rev sensor noise??? New one to me. - 2/5/2008 4:35:27 PM   
FactoryJaguarTech



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Not the car stereo speakers, the reverse aid speaker. I have never heard one buzz before. Even with a fault, it should give you a long tone and the reverse aid disable light would stay illuminated. If you are getting a long buzz, I would be looking at the speaker.
Also, look in the trunk and see if you have water in there by the spare tire under trunk carpet. The park aid module is there on the left side in the wheel well (spare). The trunk seals do leak occaissionaly and get the module wet.


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RE: Rev sensor noise??? New one to me. - 2/5/2008 5:30:35 PM   
fwilder

 

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Ah.  Okay.  Where is the speaker?  Is it that little square guy on top of the package shelf?  The only car I usually work on is my 75 Bronco and that usually involves a Big Hammer or a welder.

Thanks

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RE: Rev sensor noise??? New one to me. - 2/5/2008 6:35:00 PM   
FactoryJaguarTech



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The big speaker you can see is the subwoofer. The park aid speaker is under the shelf. You have to remove shelf to access it.

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RE: Rev sensor noise??? New one to me. - 2/5/2008 7:01:59 PM   
fwilder

 

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I don't have the sub in the center.  I'll look under the shelf

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RE: Rev sensor noise??? New one to me. - 2/6/2008 3:36:19 PM   
FactoryJaguarTech



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Any luck yet? Did you look in the trunk for water ingress?

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RE: Rev sensor noise??? New one to me. - 2/7/2008 4:29:38 PM   
fwilder

 

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Not yet, but the more I think about it, it did start after a bunch of rain last week.  I'll look this weekend.

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RE: Rev sensor noise??? New one to me. - 2/7/2008 4:40:53 PM   
FactoryJaguarTech



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Let us know.

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