Audi Air Suspension MALFUNCTION? ('14 Q7 TDI)
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- Опубликовано: 20 окт 2023
- Oh we got ourselves another fancy European with fancy problems.
This 2014 Audi Q7 TDI is fussing about its AIR SUSPENSION system.
It gets STUCK, can't raise and lower the car, setting several fault codes and warnings.
Let's do some research on this air suspension and try to pinpoint the FAULT.
Either way some VERY EXPENSIVE parts may be required...
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Enjoy!
Ivan 
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HI Ivan , great information as normal ,in short "yes" the residual valves are a real common problem on these cars easy cheap fix and you, will need to change them or the fault will come back I can assure you . A modified socket is required which you can buy or alter one you have. One little note you stated its safe to jack the car in lift mode which can cause all sorts of issues if you do and may have to re-calibrate the levels after jacking. The correct way is to enter the car menu and in there you will find a car jack selection which you need to toggle on for these cars to be safely jacked and lifted. Just another note as am sure you are aware the doors need to be closed for any suspension movement and the compressor overheat code is always stored on these cars as they overheat just moving the car from low to high a couple of times. if the compressor is tired you can obtain a new piston ring and cylinder head which works really well and you can keep the OEM motor ect ,or an after market compressor and valve block which lasts almost as long as the OEM and are a fraction of the main dealer price. Keep up the good work :)
Great information!
@@PineHollowAutoDiagnostics There is also air dryer on that compressor unit, think those "beads" in there are quite easy to replace, people here in Finland are suffering that problem at least in mercedes used comperessors.
I am glad someone else has this view. Air suspension really isn’t that bad to deal with. I have had a few Mercedes with airmatic and aftermarket airbags really cost no more than new coil springs. The issue is people just ignore the problem and ruin the systems. I really do like having the air suspension especially for towing and high speed driving.
Those check valves are in all VW airsprings that are this all in one style. Had the same codes on a Cayenne 1 facelift. They seem to seize shut due to moisture in the air. Does set the same timeout code, too. Guess the engineers didn't really think this could happen, so there is no real code for the situation.
Pre Raven Teslas seem to have those shocks, too.
And while we are at it: On Mercedes with air suspension the level sensor linkages are made out of a plastic that sometimes turns into al dente Spaghetti integrity wise. Or the linkages seize and cause issues that way. Just replace them at that point. Also on a Merc the air suspension will not adjust right after you deflated it or lifted the vehicle in any way. You will need to drive it for a few meters for the computer to trust the sensor values and lift itself off the ground. If you don't know that you will seriously scratch your head why it won't lift up (no indication that you should start driving in the dash).
After having 1 'top of the line with ALL the bells and whistles' vehicle, I have, personally, reverted to 'only one bell and NO whistles' on whatever new vehicle I purchase. I just get the required maintenance done as required. I admire YOUR techniques for getting to the 'real' cause of the customers problems!
I'm with you. I am still rocking my 1989 Honda Crx HF with over 377,000 miles on the odometer. It has never broken down on me or left me stranded. I take it anywhere and recently completed a 7,500 mile trip from here to California and then up to Vancouver, Canada and back without even any tools in the car. It has a five speed manual, no air bags, no power windows or power locks or power seats. It has no air bags and doesn't even have one cup holder. What it does have is an air conditioner that blows 40 degrees F through the middle vents and a thirty five year track record for dependability. I am not a mechanic but am able to all of the preventative maintenance on my own. It has only been in the shop for tire replacement. Head, block, camshaft, valves, valve guides, pistons, rings, block, crankshaft, bearings, etc. are all original. It doesn't burn or leak oil. I would be scared to own a new car.
@@wallebo I had an '87 honda civic that was a direct copy of the BMW 2002. Same light controls, same gear ratios, same track and wheelbase. Same parcel shelf on the dash. Once I parked the Honda next to a 2002 and the cars lined up in every aspect. I almost got in the wrong car. I owned a 2002 and it was the best car I ever drove. Independent suspension all the way around. That was back in the day when BMWs drove better when they got to 30,000 miles.
Nice video.
Air suspension has been in cars for about 65 years or so. Coming up with ways to replace it with springs has been around about 64 years I think.
You’re right. I worked on all fords with air ride, and was never happy with it, even when it worked right.
the 1958 Chev Impala offered air suspension. Very few people ordered it and it was troublesome.
@@adotintheshark4848 kinda like the oil over air system Citroen used. Or Cadillac in 59/60
I think Cadillac used the same GM system Chevy did. It was a very expensive option so few people ordered it. It would be a challenge finding one now, an even bigger challenge finding one that worked.@@marknaravas318
Very nice diagnosis, you just saved the customer thousands if they had replaced all the shocks etc.
Good God Ivan... You make everything look so simple man. Seeing this air suspension baloney makes me think the occasional electrical gremlin really aint so bad haha! As always, stellar diag and fix! I mean wholeheartedly that the vast amount of knowledge you have is out of this world, and I (enjoyably!) learn something from you every time I watch ya! Thanks for all the work you put into making all these videos, and letting us come along! I feel like hardly anyone truly understands how valuable information and knowledge really is anymore. I spent 2 years at ITT Tech and I swear I didn't learn half the things I've learned from your channel, dude. I hope life blesses you for all your effort, and I mean that!!! Thanks again, bud!
Lock all 4 corners at max lift so it looks like the owner installed an aftermarket lift kit and put some 35’s on her! Awesome work Ivan! 🇺🇸
Worked on a lot of these systems with customers when I worked for a NAPA and AC Delco diagnostic hotline. There is a known problem with moisture in system and can cause sticking valves and also crack solenoids in cold climates. Replacing the dryer in the system is recommended if you see sticking valves. I think there is also a reflash of the system to raise the fault temp of the compressor so it wouldn’t flag codes so much. We would recommend flushing the valves and installing a new dryer and it would fix most of these problems.
As Scottie once famously said ... "the more they overthink the plumbing... the easier it is to stop up the drain"....
That Audi has a nice clean undercarriage. No parts required, excellent!
I have owned 2 cars with air suspension: a Lincoln Mark VII and the ol' Marquis. The Lincoln had air suspension at all 4 corners; the Marquis just in the rear. I must say the system on the Marquis is quite a simple system. (I recently had to replace the air bags and solenoid valves and all is well. I don't think that is too bad after almost 500,000 miles.) It had a Hall effect switch that senses height and it works quite well. I like the idea of trapped pressure to maintain height if there is a system malfunction. The ol' Mercury doesn't have that and it will ride on the bump stops if there is a malfunction. (One of the bags got a hole in it and the compressor couldn't keep up.) GREAT VIDEO!
YOUR INTELLIGENCES IS ENTERTAINING.
Shocking diagnosis leading to a NPR fix! Sometimes a little venting goes a long way. I wonder if the compressor has a trap to keep debris out of the system?
For the pump- it's a good idea to just give it a visual inspection. Sometimes the pump will be near the wheel and can get covered with a layer of mud and dirt and if you just spray it clean, it helps to stop that overheating issue.
Great info
Right, a good pressure washing might have unplugged any stuck relief valves. Continuous up and down...500 degrees yowsers! I thought for sure he was going to burn up that little air pump.
Great Diagnotics Ivan..
That's cool stuff Ivan. I've had something similar on a few Mercedies where it wouldn't drop on one corner. One of them was accident damage related and had a pinched line. Another had a leak at the manifold and the shock for some odd reason wouldn't deflate. I believe it was the same scenario here. Check valve got stuck. And another, the linkage for a ride height sensor got snapped in half and had a deep scratch in the side of the airbag. Could have been from a tire blowout or possibly road debris hit it? Who knows. Anyway, now that the air ride is working again, I'm looking forward to this coolant leak.
Makes sense. Good job Ivan
Thanks Ivan!
GM tried air suspension on their 1958 models and most were later upgraded with springs.
Few bought it, the price was in the vicinity of $100 and that was a lot of money in those days, particularly during a recession. I have seen only one Level Air badged 58 Chevy in my whole life!
Awesome diagnosis. I think the sequences of rear up first and front down first for inflate and deflate is for safety. Otherwise, the front of the car would be temporarily angled upward, which might hinder visibility.
GOOD video IVAN,tough one to diag.I've done a lot of design and making tabletop equipment with air solenoids and can tell you they NEED clean air.the compressor MUST have a clean air intake filter on the head.those valves are a micro sliding fit,so don't have rings as seals on the sliding shuttle piston.The reason?o rings brake down without lube and shred jamming them up.Also they have exhaust filters and those get clogged NOT ALLOWING the air to exhaust.You can clean those out,there bronze balls smashed into a small filter.TECO numatics sells all that stuff.Just something i learned at my job,it may help.
Thanks for the video Ivan.
How appropriate. As he by directionally/manually attempts to lower the rear left, and nothing happens, you can hear, crickets in the background.
great diag, on an infiniti qx80 with bad air suspension problems the less expensive permanent fix is new aftermarket replacement springs bypassing the faulty airbags and compressor
You mean strut and spring conversion?
Wow Ivan great job on this baby!! NPR!!
Oh, the dealer would have had a field day replacing parts and charging the customer thousands!
I had a 95 Mark VIII Lincoln for ten years that had air suspension on all 4 corners. In 113k miles I never had problems with it but many others did and they usually bought coil springs and replaced the air system.
Very happy customer there !
I can visualize Ferdinand looking at one of these systems and letting out a WTF. 👍👍🇺🇸😄
Can't wait to see you working in one of those new jumping Mercedes
hello Ivan i really enjoyed your video really a good find on the air leak at the valve block that would have killed a very expensive air compressor fast from it short cycling all the time i also learned something new as i have not worked on an air suspension system in a very long time so i was no aware of the valve you mentioned at the end in case there’s a leak so you don’t come out with your car on its frame ripping out your hair and wondering what you’re going to do when did they come up with that valve very clever stuff the sad thing is that the air suspension systems today are not as simple as they were back in the days so even though they are some times a big a pain in the bum and definitely the wallet you really can’t beat an air suspension the ride its level of comfort as well as additional control you can get is truly amazing anyway i tend to ramble so sorry about that i can’t wait for the next video keep up the good work please forgive my lack of punctuation as proficient as i am as a mechanic it is truly amazing what a brain injury can take away an make completely impossible to understand im grateful i can actually write at least 😊
Those rear bags will fault again. Rest assured. New bags in the near future. Great video btw
Great job Ivan. Your persistence paid off and you saved that customer a lot of money. It's so insane that VW puts these complicated and frivolous systems on their cars that are so sensitive and expensive to repair. (By design?)
I think you mean Audi?
@@dennisharvey4499Dennis , VW owns Audi. It's sort of like calling out Ford for a problem with a Lincoln.
@@vpimike2646 Thanks, I did not know that.
I was always impressed with the reliability of the newer VE, Audi, and Porsche air suspension Vs. the Audi Allroad which was a disaster and the Land Rover systems. I bought a high mileage Cayenne Turbo a number of years back and figured I would have to be dealing with suspension failures. Slowly purchased used low mileage compressor and struts. Had the car 5 years and the only issue I ever had was an intermittent pump temp sensor circuit fault. Car was remarkably reliable given the age and mileage over the 5 years I owned it.
Dear Ivan ,them valves do play up,in an ideal world replace them all,but in reality I change the problem 1,speak to your customer explain the price,and I have found non genuine does not last long,let the customer decide,if I have any 2nd hand ones I offer them,no guarantee but they all fail eventually,good video.
Fancy suspension is expensive to fix. I had a Lexus ES300 with the adaptive adjustable suspension. Never broke but when someone hit the rear, it was so expensive to replace they wrote the car off. Loved that car.
Lexus, those suspensions go a very long time. My son drives a 98 LX470 on the original suspension, hoping it gets him through college, fingers crossed.
@@hokie9910 sweet! Yes thankfully it never had an issue. Only issues were a seat switch and the idle speed control. Had over 200 miles when it was written off.
@@kevincampbell8298 Unbelievable machines. I made the decision in my early 30s to get away from everything else and go to Toyota/Lexus. It’s one of the major reasons I have been car note free since that time. The amount of money I have saved from making that switch has to be in the 10s of thousands, at least.
On Mercedes they make kits to put it back to shock absorbers. The parts are really expensive for these systems. 4 air struts air lines ,compressor, air tank , valve block.sensors.Just more things to go wrong .
I condemned the shock early on but I assumed it was actually seized which is a thing I have learned that modern shocks do. I'm not sure if that valve is part of a new strut or not.
Ivan. I looked up the word "Tenacity" in the dictionary and I found your picture there. :-)
Compressor is going out likely due to having to run most of the time due to lines leaking. I’d replace every component that you mentioned. Good diagnosisb
actually the compressor is overheating because the car cant attain the values it wants. and the last person testing kept forcing it to lift... ivan never caused it to overheat because he was aware raising lowering is going to overheat the compressor. this would happen to any compressor if u sit there forcing it to run longer than it was designed to
@@bobspurloc yeah I did think about that after sending it. The temps did drop rather fast after active testing the solenoids.
this video proves older is better when i wanted my car or truck raised i just added air from compressor when i wanted it lower le air out. no computer no scanner just simple and worked the auto people need to learn from the past. there were leveling devices before computers and the worked now with all this new tech don't work and hard to diag
Great job Ivan!
Q7 suspension reset👍
Always the Restpressure Valves in A6,A8 and Q7....if it hangs, it will hang again, just replace them both sides...Most German Dealers have these in Stock all the time :-)
I did wonder if there should of been a regular spray of silicone lube in to each air line to keep the valves lubricated.
Fancy systems create fancy hell lol :-D
Sometimes cycling the system up and down resets air struts. When pump reaches max temp will stop operation to avoid damage to pump
I have one of these....Its the brass fitting at the air shock. Its a pressure control valve that leaves 1 bar in the shock always. If the bladder is gone it will be way lower, the same if you pull out this brass fitting between the end of the pneumatic line and the rear shock. Replace that thing and get a new pump. If it cant do 12 bar (or is it 16?) so it turns off on pressure after filling the accumulator and not turning off on temperature (it hits the same temp each time then turns off.......wait until its allowed to restart). It also only fills the accumulator at >30km/hr
Audi Quartro. Supposedly a 4X4 with high lift air ride. I wonder how often this vehicle has been offroading?
I'll bet if this vehicle had REAL AIR BAGS, it might see some real off roading.
When I got my 06 Nissan I had an ARB air locker installed in the rear diff. IT STILL WORKS GREAT!
Nissan's idea for a rear locking diff? The ABS was programmed to sense the slipping tire ( with an open diff of course) and turn on the ABS to the brake caliper at the slipping tire which was supposed to direct power flow to the non slipping wheel. So what happens if the non slipping tire starts to slip? HMMMMMM??!! Can you say maybe traction control?
Oh wait! Traction control reduces throttle opening!
I sure like my ARB unit!
This is one reason I like Ivan's videos. I didn't see Service Info mentioning to "Open the hose at the bad shock to see if all the air comes out and clears out the shock." But Ivan did! Nor did Sevice Information say to cycle the system up all the way and down several times by stopping at the different levels on the way down. But Ivan did! And in both cases it works now!
Very Good Job Ivan and thanks for the additional tests which looks like they cleared out and thoroughly exercised the system!
My BMW has the same issue. I think the residual pressure valves corrode due to water in the system. Stupidly (at least for BMW) the desicciant cannot be replaced without replacing the pump valve unit.
After reading some of the comments you would think that the engineers would have provided a drain valve on the compressor to aleviatemoisture (something similar to a home air compressor a button on the dash to do this periodacly & lubrication ) ?
This reminds me of Lincoln Navigator air ride. I was the only one stupid enough to work on them. Now I know why I’m glad I quit.
About the overheating compressor? ? ? I was thinking about the " accumulator" If the suspension runs in closed circuit , maybe, the compressor is not supposed to pump without cooling period ?
These fancy gizmos on expensive cars are great for folks with a lot of money that get a new car every year or two and probably don't drive all that much. They never keep them long enough to have issues and they're under warranty. Getting them as every day drivers for years will lead to misery. So many things to fail.
I got the air strut from a company called maX pending RODS Also known as maxspeeding rods.
The cmpressors wear out on these VAG cars as the rings run unlubricated in the cylinder bore. The pump can hammer away with little effect as the rings are worn out and it overheats quickly. I believe someone does a repair kit for them as VAG will only supply a complete unit for big money.
Ivan, another great diagnosis and two videos. Told you, you will start to like the German stuff and your amazing skills are tested with their advanced systems and technology. Credit to you that you are able to use your logic and work these things out. Land Rovers are another matter though, poorly engineered and poorly executed. 😂 Avoid and only do them if you are prepared to push through the pain barrier and gamble you will come out on top. Great content for your channel though maybe…… just make sure you have stocked up on headache tablets. 😂
welcome to an Audi Nightmare...LOL....good luck Ivan
Just when you think Ivan has fixed all the dumb ass bells & whistles there is , he gets this one .
set a box on 4 shot glasses try to rase or lower one corner see what happens to other three corners
AUDI= An Ultimate Dollar Inhaler
Gotta pay to play! 😎
You said it brother, JUNK
हॅल्लो सर औदी q7 2011 मॉडेल एअर saspention not warking and abs pomp watar dammeg sir foult kiska hai saspention in abs our air saspention control module pls help me
👍
10 years is right around the time you'd really want to be replacing your air shocks at the latest on any vehicle that has been driven.
Phad morning to y’all
the crack let water in to corrode a valve???
This goes to show you. If you're getting something with air suspension lease or sell it before 75,000 miles to be safe. That is American or any other car companies. If you live in the perfect area were there's no weather then you can strech out ownership to 90,000 miles.
Hey brother I have a 2015 Chevy Silverado and when I bought it it was going into limp mode. Took it to a shop said it was a p0300 and they replaced all plugs and wires and ignition coil for cylinder 3. Still went into limp mode after that so they replaced a 02 sensor and it never went back into limp mode. Got told my left cat was clogged up so I got them busted out. I currently have p0420 and p0430 code but also sometimes a p2097 and p2099. Hasn’t went into limp mode again but hooked it up to a computer everything looked fine but I had a misfire on cylinders 2,3,4,5,6 while driving. Almost feels like a shudder to me while driving. Didn’t throw a code other than the four that was already on. Do you think this is bc of the cats busted out and the 02 sensors are reading wrong? Any advice what to do? Thanks
I would diagnose the shudder problem...
Parts still required 😊
Soon, but not immediately haha!
I wonder is there any other Volkswagen product that uses that system like a Skoda or something it would be cheaper probably
Das clunker Ya !
Regular shocks and springs would be my choice.
Change the residual pressure valve at the shock and your’e sorted.
Yes that is the final conclusion if the problem ever returns :)
@@PineHollowAutoDiagnostics Alrght, he can drive with it for a long time though, it might act up again from time to time, especialy if he raise the car again to its highest. i had a technique myself to lower the car in small steps. The left rear suspension was always slow to release pressure. I changed the valve to remedy the issue at last. Don't bother try changing the fitting with crimp-on ferrule its pretty tight on the plastic tubing, just change the Oring and clean it. its the valve fitted to the airspring thats important. A good service on these systems is changing the valves all around, cleaning the struts and service the compressor with new seals and piston ring. have a great weekend, love your videos!
RMT sells rebuilt air suspension parts
Hey Ivan, do you know of any good mechanics in Las Vegas? I have had two mechanics throw the parts cannon at my Honda Accord.
Unfortunately no. You can learn how to diagnose the problem yourself with the help of my channel 😉
@@PineHollowAutoDiagnostics that is why I have been following you for years. I even did an engine swap and have been able to diagnose quite a few issues thanks to you. I might just ship the vehicle to you.
@@systemloading6875 what's the problem with your Honda?
@@PineHollowAutoDiagnostics long story short jdm swap with misfires on every cylinder. Starts and runs for like 30 seconds but the accelerator pedal does not work/respond. Mechanics have installed new plugs, coils, gaskets, heads were machined twice, block was taken apart and I think a new piston set was installed, injectors were cleaned, new fuel pump, a few sensors were changed, etc.
@@systemloading6875 sounds fun 😁
just a little dirt and moisture in the air can easily cause mud and clog this air ride system
yeap... the german bimmer and merc are proud with their complexity. audi be like :D
I wonder if this same air lift as Mercedes and Mopar
The left front seemed higher than the right front. Time to deflate was different.
I read through the comments below but nobody mentions how the system purges the moisture from inside the lines.
There is a dryer on the compressor I think...
Interesting, thanks@@PineHollowAutoDiagnostics
Why are you not using your k10 yet? Is it because it doesn't have fca authorization or can fd protocol? Been waiting for you to bust it out!!
I just like old reliable tools that work 😅
You got to pay to play🤪
180K+ on an Audi means that car is well past it's best before date, time to trade it is now.
It's a Audi of course it pukes coolant from the top of the engine😂
What equipment are yall using to fill air suspension that uses nitrogen? I just got fished installing a harness on a 2022 tesla model s plaid and I still gotta replace the compressor front lines and valve body on the car for the air suspension. The only shop I work on tesla at doesn't have the nitrogen filling system and I need to know what equipment to request, the fitting looks like a normal valve core do maybe just a regulator coz they do have nitrogen tanks for all the different types of welding equipment. If ya'll ever need to replace the whole front harness on the car it is possible to do so without removing the HV battery and dash, just saying lol
Ehh?
@@rkan2 lol
I just figured someone might know or have experience with those systems. Shouldn't be hard to comprehend , you'd think so anyway
@@autotek7930 Maybe just get a Nitrogen tank with a regulator and adapter fitting?
@PineHollowAutoDiagnostics that's what I was thinking. Never used that before so I didn't know for sure what to get. It's not my equipment or responsibility to provide it, they don't know anything at that shop and we all are tesla certified and acquire tooling as we need it. I've read up on what to get but there's still variables so I was hoping someone could provide a link lol. I wish I could make videos myself but they have a very strict social media policy that would result in legal action if violated and I ain't about to go down that road. Not everyone gets to do the things I'm doing and I would definitely watch my videos
The Audi is VAG's lease car. You get a new one with an all-in contract, use it until 50k or 3 years, and then have it replaced.
If you want to own a car, choose something else.
They are fine if you don't go for more than 4cyl manuals with max 1 turbo. But I guess more than half VW/Audi in the US is something else.
Best comment ever on the subject. You want one of these cars lease them, because after 50k it all goes down hill rapidly. If you value your money, you might want to take this guys advice. I don’t like leasing, nor any kind of payments…but if I had to drive one of these cars, it would be leased.
It definitely needs a new compressor if the current one hits over 400F.
Your compressor should be no lower than 10 bar, you can buy a ring kit for the piston which will fix that and mean it’s no longer over working
They are nice vehicles though lol
I have the same problem we're I can find you
Amazing how Citroen was years ahead of any car maker.
and where are they now//
@@juanrodriguez-ry6yt The entire car industry is crap. In the good ol days i mean even now if you buy a old school Citroen still worth the buy!
Customer complaint I bought a Eurotrash Audi and it won't stay fixed after warranty runs out which happens all the time. The only difference is during warranty I don't have to pay but I don't have a car
🤣
What happens when the car can't talk to the scanner or that thing you plug into the car.
I'm pretty sure Ivan here has a video about that.
Or it could mean the car and the scanner got married - that often explains not talking to each other.
One of my neighbors owns a used luxury car lot. His driveway always has a "luxury" SUV squatted to one side or back to front. If would be funny if his driveway wasn't covered in oil stains.
looks like it needs rubber too...
dos some one offer a coil lover strut
Like ok
It's been 45 years..I've owned 1 Audi
.never again nowadays there is just to much tech...it's like your driving your phone...😂😂😂😂
Tesla is like driving your phone 😆
10 year old Audi with 180K. Not bad.
I'd be afraid of working on this system. I might do something and then the car will start bouncing up and down like a '63 Chev on hydraulics.
Check out Rebuilt Master Tech in Ft Lauderdale Fl
Too many moving parts for a reliable daily driver. More parts = more possible failure points.
Remember back in 76’ I had a 65’ Buick Skylark. Had coils on rear that were so so, installed a set of Gabriel high jacker air shocks on rear. Had the air valve inside trunk that you manually aired up or let air out to control rear height. Very simple yet effective 👍
Yup I have the same manual Monroe MaxAir shocks on my SUV and van 👌😊