Phaeton :: 2004 - Mystery Noise Under Dash
Apr 20, 2010
I have a recently purchased 2004 Phaeton V8 that has developed a mystery noise under the dash. It occurs when the engine is running, and sounds like an electric motor with a bad bearing or bushing. About 15 seconds after starting the engine, it cycles a couple times, then comes on constantly. I stopped by the local VW dealer and they ran some diagnostics to see if any codes were present. There were none. Since I was about to head out on a short trip, and the VW tech said everything was showing fine, I decided to have it looked at further upon my return. But, later that day I did some more snooping with a stethoscope, then dug a bit under the hood.
The noise seems to be coming from what appears to be a solenoid actuated valve that is probably attached to a pump. I went back to the dealer with photos and this new information - more diagnostics were run, and the tech went to look up the part. It didn't show on his diagram, so more research is being done as to what it is. In the meantime, what this is? I think it's some sort of valve for diverting heat between front and rear or left and right. Here are a couple photos - a distant one to show its location relative to the engine, and a close up. Hopefully I can get it serviced or swapped out in the next week or so when I have the 80k service done.
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I've put a recording on Soundcloud:
The noise is best heard at 1:00 onwards, after everything else has stopped. I left everything else in the recording, the volume level relative to the engine etc.
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There is an occasional noise that happens only when I am braking my 2003 Corolla. My mechanic has ruled out the brakes and says there is nothing apparent that would make it dangerous to drive the car. The noise has happened on hot days, cold days, dry days, rainy/snowy days. It doesn't happen each time I brake. When it does occur it ranges between a sound like a humpback whale's song to a very loud screech. When it does, it is always right before the car comes to a stop. It happens when I back up and when I am going forward. I cannot reproduce it (I drove with my mechanic all over heck and gone trying to get the car to make the noise, alas, it would not). However, I did capture it at its loudest.
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Not sure if it's just timing chains or what...Maybe DMF? If it is the chains, is this excessive for chain noise? The noise starts once the car reaches operating temps. , video included.
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What the warning lights mean (red triangle with exclamation mark inside, and yellow icon upper left of display, 2005 Gen II)? It comes on after starting the ICE, used to come on intermittently, now it's all the time... my hunch is the suspension because the ride has been getting worse, with unusually loud sound from the wheels over potholes!
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Feb. 2, 2010, I had my '04 Phaeton in for service (88,997 mi) because it would not start. After diagnosis, found faulty brake switch and shifter mechanism. Removed and replaced brake switch, shifter assy, and PRNDL sensor. On Feb. 17, '10, after I started car, it sounded like it was in wrong gear and all drives were lit on dash. Turned off, started again and everything was OK. Called service tech to let him know; he said he would notify mechanic.
On Fri., 19 Mar. '10 at around 2:15 p.m., was driving and noticed again that all drive lights were lit on dash. Pulled off road, turned off motor, started again, and everything seemed OK. Went farther down road, entered super highway, pressed accel. to pass tractor-trailer, only to notice all gears were again lit, as well as a new engine outline (in orange). As I was passing the truck, car surged forward and then made a loud clunk, I drove at 60 on the 70 mph rd. to get to rest area. Turned off motor, looked in manual and it stated car should be taken to dealer. Since it was still "drivable" and I didn't need a tow, I tried calling the dealer 4 times, but only got through to an answering machine. I decided to take car to dealer.
When I arrived, I spoke to the only service writer at the desk, and he was new. Told me they were too busy to take my car that day. I asked to speak to VW service manager, and he said I should not drive car. Car now has 91,509 mi.
I was wondering, why all gear lights keep coming on at the same time, and why the car feels like it has to shift to the next gear. I am thinking the repairs on Feb.2 were not complete.
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I drive a 2002 Protege5 with about 125K miles. The suspension (struts and mounts) and brakes have been recently replaced and, with the arising of the Mystery Noise, checked by a mechanic as of last week. The noise sounds like a creaking or bumping in the front end of the vehicle, and comes primarily when slowing to a stop, when the brakes are applied or not. The pace slows as you stop. And it is not always predictable: the mechanic could not recreate the noise, but my wife and I hear it all the time.
I'm just speculating, but should we be looking at the bearings, axles, CV joints... or is this going to get even more expensive? What should I ask the mechanic to look at on this thing?
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2004 with 214000 miles. Brake pedal goes to the floor, red dash lights are flashing, I just added a container of brake fluid and still no pressure at the pedal. I'm guessing master cylinder.
My question is: Even though my brake pedal goes directly to the floor, how am I getting the car to stop at the very end of the push? Do the brakes somehow work as a fail-safe even the the hydrolics are basically toast? I know that's a long shot, but it wouldn't be the first time I've been shocked over systems in this car.
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I have a humming noise coming from the front end of my 2004 W12. I only notice the noise at highway speeds and it appears to only be audible when I turn the wheel to the right. For example, when traveling on the highway and the road bends slightly to the right or when I move into the right lane, I hear a faint hum coming from the wheel(s).
I started hearing the hum a few days ago but dismissed it as a symptom of my Phaeton Obsessive-Compulsive Disorder (POCD). While driving to and from DC last night on a night out with my wife, she commented on the presence of the hum as well.
I just had the LF wheel bearing replaced 2 weeks ago. Here are some possibilities I'v thought of:
RF wheel bearing
Low Power Steering Fuild
Other Steering Problems (leaking rack)
On a related note, where do you check the power steering fluid level? I can't seem to find the reservoir.
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I have a 2004 Phaeton V8 whose engine makes a noise which just shouldn't be there. I occurs if you accelerate the engine (also when the car is not moving) at about 1500 rpm. VW dealer says its okay.
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Had my 2004 Phaeton in to take care of some smaller interior issues under warranty. One of them was that the steering column makes a groaning noise when it is being retracted. Service advisor told me that the Phaeton technician (who is also the shop foreman - Jim Ellis VW Marietta) told him that this is common with Phaetons and there isn't a realistic fix for it. I've read the post already about the felt strip wearing down, but I'm wondering how many of you have the steering column groaning noise when it's being retracted when the car is shut off? I'm trying to decide whether to push the issue with the dealer or just live with it.
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VW Phaeton, 2004 W12, 104000 Miles, Park in garage, heard loud pop and air escaping front passenger side, I think it is the air shock or suspension.
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2004 Prius base
191K miles
There is a squeaking (for lack of a better term) noise from behind the dash..
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I've only started noticing this recently. I have a 2004 W12 with roughly 75k miles. It seems to only happen after the engine warms up, but even then its seemingly randomly. I'll notice a clicking sound coming from the front passenger side of the engine. The sound increases in frequency as I rev the engine. I have no check engine lights and no noticeable loss of power. Its not a radiator fan since the sound is still audible when the hood is open. I'm getting no CAN errors with my generic OBDII scanner (I know its not a VAG-COM but hey).
I've been reading up on the possibility of it being a bad valve lifter. I don't know much about them and was hoping to get some advice here before I go about asking my dealership to diagnose the sound. I found this random article through google vaguely talking about replacing the lifter. The person says its "reasonable and inexpensive".
I also stumbled across this thread here describing what sounds similar. Although the thread provides no closure it seems towards the end people are hinting that the engine needs to be pulled? This is contradictory to the first source I found. My question is, say it was a bad lifter, whats the extent of work required to fix it? The Parts seem to be really cheap if I'm looking at the correct stuff?
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I now have the 'AFS off' flashing on my dash lights...just started yesterday out of the blue (without the headlights being on). I have what I think is a failing HID bulb on the driver's side - went out a couple of weeks ago and again this morning. Reset the lights and it comes back on.
Don't know that there is a connection. I'll be looking at the manual ECU reset on the AFS light and at the sensor when I get a chance.
Also, I am pretty sure I have a wheel bearing failing on the driver's side, but I can't decide if its the front or rear. How to make it definite - front or rear?
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I am experiencing this whirring/grinding noise:
Which is the same as this thread : Grinding Noise from Dash | PriusChat
It occurs intermittently when starting up the car, though if I then turn the car off (as in my video) the noise continues.
On that thread the vehicle was in warranty and was fixed by replacing the MFD touchscreen. My 2006 UK Prius is (I believe) out of warranty, and the touchscreen/MFD seems to be working fine. Is there anything I can do preventative on this?
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I started the car and the lcd between the tach and speedometer is not readable. Looks like a computer when it goes out. Everything is working correctly in the other display. How to diagnose this. I just ordered a vag-com but it has not arrived yet, i have only had the car a month.
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Ok this just started and it has to do with brakes in a way----the Noise is the sound of when you are deflating a balloon (the squeaking sound). Its under the dash area and I can make it do it if I press on the brake pedal and let off it will make the squealing sound. Some times it will do it on its own just driving along without even hitting the breaks, but when it DOES start doing it I can make it do the noise constantly pushing the brake pedal down and then letting off!!!
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I have a 2004 XLE V6 that just recently has started a clicking/ticking noise coming from the dash around the passanger side/glove box area. It sounds like a small electrical relay noise randomly making/braking its contacts. At first I thought it was the CD player (you know how it clicks when changing/loading CDs), but it happens with the radio turned off.
The noise does not have any definite rhythm and it's not coming from the engine, but only makes the noise when the engine (and A/C) is running. I've noticed the noise will go away after the interior temperature cools down. What is causing this clicking/ticking noise?
Since I have a XLE with the digital temperature control, is there a temperature sensor located somewhere that feeds a signal to the A/C controls for the cabin temperature to automatically adjust the cabin temperature/fan speed, etc.?
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After searching for the Prius that I wanted, I settled on a 2008 Prius Touring with 171xxx miles. The car was at a sales lot 300 miles away. After a few phone calls pertaining to the Prius, I arranged to meet the lot owner roughly 1/2 way in between for the purchase. We met. Owner said that several dash lights came on as they were driving to meet me. (Yes, I believe him.) He talked with his mechanic, and was told that the problem was most likely the ABS control module (p/n 44510-47050). Owner agreed to shipping me a good used ABS module and discounted the vehicle a bit. I drove it home.
The brake, (!), ABS, and VSC lights are "on"when the car is in the "ready" mode. The parking brake is not on. When I walk up to the car (with SKS fob in my pocket) and open the door, I hear a noise that sounds like water running through an outside faucet that's only partially opened. For identification purpose, I will refer to this noise as a "hissing" noise. When in "ready" mode , the ABS system "cycles", with about 4 seconds hissing, then about 10 seconds not hissing, repeated over and over.
In ready mode (under the hood), the inverter pump is humming away just fine, and the coolant can be seen flowing in it's reservoir. My biggest question is that I have read about others with the unwanted dash lights, but not any with this hissing noise. Does the ABS module replacement sound like it will most likely cure the problem?
And btw, after disconnecting both batteries and waiting for the proper time period, is it really necessary to use the insulated gloves? Years ago, I used Toyota repair manuals, and after receiving the Haynes manual, I'm a bit disappointed.
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So I was riding with no music on--had family in from out of town--and noticed a strange noise coming from behind the dash on the driver's side. Hard to describe but almost a liquid-type noise (although not a liquid) and repetitive. Doesn't happen all of the time but happens frequently. Not loud enough to hear over music or even road noise on a highway.
Almost a swoosh, swoosh with sort of clicking. Wish I could describe it better.
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