Rev sensor noise??? New one to me.
#1
02-05-2008, 03:10 PM
Rev sensor noise??? New one to me.
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 getfrom theback 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?
Does this sound familiar to anyone?
#2
02-05-2008, 06:08 PM
RE: Rev sensor noise??? New one to me.
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.
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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#3
02-05-2008, 06:29 PM
#4
02-05-2008, 06:35 PM
RE: Rev sensor noise??? New one to me.
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.
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.
#5
02-05-2008, 07:30 PM
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02-05-2008, 09:01 PM
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#11
02-10-2008, 02:26 PM
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RE: Rev sensor noise??? New one to me.
Guys, I hear this noise before, I think is nothing relative with the parking aid system, if so, the noise appears when you have a sensor broken, or the module is bad, onlywhen reverse is selected.
On type 2003 (X202) it was the first one with electronic brake system, when this system have a fault on one of their components, or some times is just a problem with software of the PBEM (Parking Brake Electronic Module), that lost information because low voltage, you can hear this noise.
I say this problem whenchanging the rear pads, and the technician didn’t put the system in service mode, (that alloy to take apart the brake pads without pull the cable), the electric motor lost the information about the position of the cables.
The problem can be fixed in two ways, but some times the cheaper does not work, but try it:
with switch on position 2, press the brake pedal, wait for about 20 seconds and pull the brake switch, one time, after the brake is engage, push the switch down to release the parking brake, and repeat the for 4 times, this procedure is for let know to the module were are the real position on the brake cables.
If the problem still, you need some dealer help, to read the DTC codes and re flash the PBEM, can just work, but is the module or motor is bad, you need to replace it.
I hope this helps you.
Nacho
On type 2003 (X202) it was the first one with electronic brake system, when this system have a fault on one of their components, or some times is just a problem with software of the PBEM (Parking Brake Electronic Module), that lost information because low voltage, you can hear this noise.
I say this problem whenchanging the rear pads, and the technician didn’t put the system in service mode, (that alloy to take apart the brake pads without pull the cable), the electric motor lost the information about the position of the cables.
The problem can be fixed in two ways, but some times the cheaper does not work, but try it:
with switch on position 2, press the brake pedal, wait for about 20 seconds and pull the brake switch, one time, after the brake is engage, push the switch down to release the parking brake, and repeat the for 4 times, this procedure is for let know to the module were are the real position on the brake cables.
If the problem still, you need some dealer help, to read the DTC codes and re flash the PBEM, can just work, but is the module or motor is bad, you need to replace it.
I hope this helps you.
Nacho
#12
02-11-2008, 10:03 AM
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#13
02-11-2008, 06:48 PM
#14
02-12-2008, 11:10 AM
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RE: Rev sensor noise??? New one to me.
No it is just the rear, it was disconnected when I bought it, I hooked it up and played with it a bit but no luck.
I was reluctant to just get a new module, if there was a switch on the gearbox somewhere.
I should really have had the dealer check it whe it was in for the tourque convertor, but I never gave it a thought at the time.
I was reluctant to just get a new module, if there was a switch on the gearbox somewhere.
I should really have had the dealer check it whe it was in for the tourque convertor, but I never gave it a thought at the time.
#15
02-12-2008, 05:17 PM
#16
02-26-2008, 11:44 AM
RE: Rev sensor noise??? New one to me.
Well I finally got around to checking the trunk. Yep. Lots of water. I drained it last night and used my shop vac to get the stubborn parts. Sensors are still doing that noise, but I'm guessing it will dry out in a day or 2. Why/where do these generally leak and is there a fix?
Thanks much.
Thanks much.
#17
02-26-2008, 04:11 PM
#18
02-26-2008, 06:25 PM
#20
02-27-2008, 07:01 PM