Simple Repair Became a Big Problem With This Audi R8!
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- Опубліковано 26 лис 2024
- This Audi R8 4.2 V8 came to us with what appeared to be a simple issue... But as we got deeper into it, we discovered a mystery fault that needed to be diagnosed before we could give it back to the customer...
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as a technically savvy Gen1 R8 owner, I would say the lion’s share of owners would happily pay a touch more to know you aren’t totally losing your arse on a rabbit hole job, where your professionalism dictates you don’t bend the customer over.
Also, absolutely grateful beyond words to have you put these videos out in such clarity.
Thank you for what you do.
Well said mate. Totally agree
Blows my mind Ricky's Knowledge. Unreal. Electronics makes my head explode, so total respect,,
As a career mechanic (since back in the stone age '87) I'm also a gen1 R8 v8 owner. I'm immensely impressed with the level of knowledge Ricky has. Mechanical knowledge & ability is one thing, but the complexity of modern day wiring systems is other level. It's hard to imagine the nuclear leap since back in the day when I worked on Cavalier, Omega, Calibra etc. it's very hard keeping up-to-date with the rapid change in technology. As a self-employed mechanic I remain immensely impressed with Ricky. He's a genuine rarity within the trade.
Oh I loved my Cavalier, poor mans Capri.
Pride n joy in my early 20's, Joy riders nicked it.
Was pretty hammered the night before, I got up n out and it wasn't where I parked it. I'm sure I parked it there! .. Where did I park mt effin car??? . No! , I did, I parked it there..!!!! Sure of it.
Cops found it 30 miles away up near Bude. trashed. Utterly trashed.
Couldn’t agree more,great work
@@PeterbrendanalbertI too have my cavalier stolen from outside the house, found wrecked in the middle of a field 😢
@@DerekEmerson You know what cheered me up.
£500 2004 Vauxhall, I'm in Germany now, Opel Astra Cabrio Bertone. Heated leather seats, electric roof and a Sony 10 CD multichanger. Wrote one off in the snow last year, I was very sad.
My mate came over in his £40,000 BMW cabrio.
I thought hang on..
I can write off 80 Astras for that .. Get IN!
So got another one, put it on the drive and pretended it all never happened!!
Just a dream.
GENIUS!!!!!!
Not sad anymore.
I've seen this before. I found a gps tracker wired into the can harness between the obd plug and gateway on an audi rs7. It messes with odis but all other diag (autel, bosch kts, vcds etc) doesn't have an issue. You might want to check with your client about a tracker or ghost immobiliser. Both can prevent thieves recoding modules via obd socket.
I think it is most likely some sort of 3rd party hardware spliced into the wiring. I would also note ohm testing lets you know at least 1 single strand of copper wire is still there.... I would suggest to load test it. Pull /9 and /19 out of the J533 and short them together. At the T16a, jumper /16 to /6. So now T16a/14 should have battery voltage. Load test T16a/14 for voltage drop, I would suggest using something like the 180 LOADpro for this. Regards.
Proper proper problem solving through truly genius understanding of vehicle systems and genuinely honest self examining appraisal of what should be charged out to a customer - every bit of why I love this channel and admire the type of businessman Ricky is. In any industry dealing with specialised service & repairs, Ricks honesty and truly astonishing expertise is a rare rare thing. Such skills are almost always used by others, to legitimise astronomic fees being charged. Not so with Ricky.
Worked with LAN ( local area network) and WAN ( wide area network) back in the day with HP. CAN is a new one. Fascinating. For those of you of a certain age, Starlan 5,Starlan 10, Token ring. Modern computer engineers dont know theyre born with the crap we had to deal with back in the 80s.
What a breath of fresh air you are Ricky to your business and clients, 99% of the time in that video I had no idea what you were talking about, all I know is at that hourly rate I would need to win the lottery for your team to look at any car I owned so fair play to you for sucking up some of the cost, a true gent
The car you sorted whilst I was with you last Ricky, the only think I’d thought of was electrical noise and by moving the wires into a different part of the loom could be the answer.
Top job bro.
Those of us lucky enough to own these wonderful cars are more than willing to pay for quality service. Your YT channel led me to you and to be honest, apart from regular maintenance with my local Audi independant who is more than capable of doing, if something serious goes wrong during my ownership of my C6 RS6 its a no brainer where I will be taking back it to get it fixed, despite the 4 and 5 figure bills Ive had with it over the last two years.
Good stuff Ricky, You maybe best to try a low ohm meter in this situation, you can get a cheapish one’s from RS. I’ve had similar with other industry specific software, one can slightly more finicky. Thanks ❤
Be nice to see that on a scope see what’s happening on old wires then repeat with new wires, also load circuit and test with a test light
It’s a good quality to be honest with customers and that is a funny situation to be in, but you know he’s going to be a return customer and he’s definitely going to be singing your praises to everyone he speaks to for sure
Most garages would charge that extra labour (ref undertray bolts and canbus fault finding) in fact an independent "vw" specialist local to me somehow snapped off a caliper bolt on my friends S3 and charged him to drill the bolt out, re-tap the whole and replace the bolt (car went in for new disks, pads and fluid). Two days prior to a track weekend in Spa.
Ricky as a matter of fact you have solve a problem that the car was suffering from. I know you probably spoke to the customer about this so I’m not gonna patronise you. You have to charge him something, or atleast the customer should give you a decent drink for sorting out his car. Good work and keep up this kind of content. This is what it’s all about
Always the danger of belling wires out with a multimeter...you may have low resistance with zero current flow but much higher resistance when you actually attempt to flow current, even if its a low current in the low mA range. Test lights are exactly what is required to test actual continuity. Alternatively you could scope the actual raw CAN signal & you'd see the signal dissappear when you plug the tester in. Easy once you've seen it before!
I've worked on cars and vans for 40 odd year's now. I'm genuine like your self hate ripping people off. I couldn't believe it you only charge £125 an hour. Love your channel. Very good on the v10s .stay safe russ 🙏
I’m an electrician and I can tell you there are only ever 4 types of cable fault high resistance/ low resistance open circuit and short circuit … you can have that for free 👍🏼👍🏼👍🏼👍🏼
These videos that have a good start, middle and end to the story are dynamite good. Especially when kept to a sub 30 mins. Which shows good respect to viewers time. Keep ‘em coming! 🍻
As always very impressed with your approach, depth of knowledge and honesty - sadly there are some who would charge for every minute whether diagnosing or fixing. Thanks for your informative videos and service, whilst I have my R8 I will always patronise your business.
Maybe you could try loading down each wire with a low amperage test light. One of The wires may be holding on with only a strand. I work in the railroad industry and we always have to test in continuity and by loading it down to ensure the integrity of the cable.
Odis may be work8ng at a slughtly higher amperage to VCDS and the integrity of the cable isn't able to support it.
Great find though and cheers to you for taking care of your customers
I dealt with a no comm on a VW CC today. After checking power, ground, and scoping both CAN lines, found three pins mushed up in the OBD connector... I learned today to always check for stupidity first...
I highly doubt there’s many people in this industry who would have been able to find that issue, the level of knowledge on display here is astounding. Ricky is the GOAT there’s nothing else to say 🔥
Thank you
I've not see this on cars but I work in electronics sometimes wires test good with a meter but the strands of wire are broken inside!, say it's 7/0.2 (7 strands of 0.2 copper wire) 6 strands of wire are broken and only one strand is making the connection or all of them are broken and when the wire is in a certain place it's making a connection until you bend the wire which opens up the wire strands inside the plastic insulator. Give the terminals a tug with some pin nose pliers and see if one of them comes away, if not it's along the wire somewhere else. Their must be a intermitant break or open along one of those wires.
Great work, would have been interesting to load test both can wires with a bulb between the gateway module and OBD connector as it’s a bit more thorough than a resistance check. Also you shouldn’t work for free when running into problems that aren’t your fault .. if a joiner quoted to replace the kitchen, started work and found your joists had rotten then you would be paying them additional ££££
Great find, had similar with trailing cables on lifts. They test ok and it shows communication but fails as soon and anything demanding is put down them. We test the boards by removing them from the lift car and use short cables to wire it to the main board. I’d say that one of them cables has been caught or pulled when it was fitted. You would need way more sensitive equipment milli-ohm meter to record it. Also love a bit of VCDS action as it’s saved a small fortune on my parents Continental GT. Is Odis more common after a certain year of VAG products?
You are not a bastard for charging for the time it took , it’s not your ( or the customers) fault , it’s the car manufacturer making them nearly impossible to repair , it’s good for business. I don’t know what the answer is but sympathise with you .
The answer is to subsidise all the work by making UA-cam videos about it and collecting ad revenue and sponsorship money 😁👍🏻
Your time is always chargeable my friend, even if it's struggling with tray screws, love your channel btw
I’ve got a similar fault in a mini at the minute where sometimes I can see the ecm and all the modules and other times I can see nothing. But the car runs and drives fine. There is a fault in the tailgate module that shows up that says internal fault, but it’s not consistent. It’s going to be water in a plug, I just have to find the plug causing the issue. And I know it’s usually the BCM but mine is bone dry with no signs of water ingress…the joys of electrical faults. 😂
Full props for showing these kinda issues. Hopefully thats gave afew more people an insight into what can happen when were trying to figure out problems on their cars
dry joint or multi-strand wire damage; diagnostics mismatch / compatibility?
Excellent video.
Commercially I don't believe an owner would reject a compromised cost. At the end of the day Rick you are not a charity and have to cost the value of your expertise. At the end of the day the customer (and probably Audi) would struggle with this fault.
This is like that joke about an old crusty ship engineer. Something was wrong with a ship and they had to bring him out of retirement. He comes over looks around and taps a part with a hammer. Ship starts right up and he goes $10,000 please. They are appalled with the charge and he tells them you're not paying for my time, you're paying for my experience. Top job mate! Tracing wires is the pits... Honestly, you could just let it go back and say "I've done all I could" and he would've kept going from shop to shop. Probably spend way more money than you'd've charged him for a day and a half of work. Kinda how I'd've looked at it. Or some mix between half an hour and a day and a half considering maybe someone else would come in with the same problem at some point. At this point it's definitely ethics vs profit. Good on you for making the video.
Its a dollar for the bolt, its 500 dollars to know wherd it goes.
Fair play finding that fault Ricky hats off to you sir.
Chap, I'll take this up with the networks team at work and ask them if they have seen similar... to me it's a resistance issue combined with borderline electronics hardware design. Epic work on finding the issue... thats a tuff one to find! I think I have the same issue on my jag I can't get comms with the factory software yet my off piste stuff will chat no drama. this has given me food for thought..
Without looking into specifics, from similar experience in computer network signalling, I'd guess that the CANbus signalling is differential and looking for a nominal voltage between the low/high signals. The tolerance of what that nominal voltage diff is probably a little more lax in the transceiver for VCDS, versus that which the ODIS systems transceiver expects and/or its a little more tolerant of phase shift in the signals (hence the clocking of the rising/falling points). When you re-wired, your "cleaner" lines put you back in the "eye" of the transceiver, and the more sensitive (strict adherent to spec?) transceiver now is happy with the signal. We used to see so many of these types of issues in fiber transmissions where the optical transceivers at each end might be super-sensitive such that mixing manufacturers would cause probs, even though all were nominally supplied and cert'ed to the same standards.
Never fun in the moment, but super-satisfying to overcome eventually, as long as the customer is not breathing down your neck at the time! Great jobs Ricky and more importantly, good on you for a great practical example and exposition of troubleshooting modern cars … good luck to anyone finding a chain/franchise mechanic (even manufacturer cert'ed) who would be able or given time to do this kind of work.
Hey Ricky you need to test the cables with a 1000volt Mega meter
Your multi meter testing on ohms can show continuity but under load the cable may be braking down
This is probably why one system can read ok and the other can’t
The one that can’t is probably putting load on the cable and the slight change in resistance is enough to stop your system working
Came here to say this, it’s probably a slight break or a short to earth or short across to another wire in the loom that a multimeter won’t show, but a megger will find. Just make sure before you press ‘play’ on the megger that you are not connected to anything other than the actual wires, because otherwise it will fry every module on the car! 😳😳🤬
Possibly one of the can wires is down to a few strands and is dropping voltage, would be interesting to scope them and see if you have corrupted signal….. very strange the VCDS is fine and ODIS drops out. Very good find by the way!
Definitely,, scoping it would be the next step to see if one of the CAN lines is the issue. As others have said, it could be leaky insulation when under load (though this would be less likely on a signal level wire) or noise is being injected into the signal that the reader is less tolerant too (though that is also odd and both wires are typically subjected to the same noise and as you point out , differential vs referenced to ground). Either way, a scope on both lines, under different conditions (the different readers connected, not connected, jump wires in or out), would at least confirm a difference and may point to the cause.
Great channel,when are woolly hats bk in stock?
And stuff like this is exactly why I’m glad I don’t work on cars anymore! You did well to find that in a day and a half to be fair!
Nice video again and any purple bobble hats left?
No all sold out I’m afraid. Tricky to get them back in stock before Christmas too.
I have exactly the same issue on a Cayenne Turbo. I'm half way through replacing the can bus wiring for the same reason.
Great video can see why u getting so busy love how talented and professional your are Ricky keep up the great videos everyone must learn so much
Ricky, it's not your fault that the gateway module was defective. You MUST charge for the diagnosis. Otherwise you'll be chasing this lost time and money for ever. .
Have you tested the problem wires with a load, as they may be breaking down under load or have a partial break?
CAN bus is not "redundant" but uses a differential signal, which is why the wires are twisted in the wiring loom. When you have magnetic interference on them, both wires get the same magnetic field and because the actual signals are opposite of each other, the magnetic interference gets cancelled out. This is why it is so much more reliable, not because it is two wires carrying "the same signals. LIN bus is slower than CAN and certainly not more advanced. What is more advanced is Ethernet that still uses twisted wires or optical fibers to transfer the signals.
Why ODIS wouldn't communicate? I wouldn't be surprised if it won't do a fallback to KWP2000 that uses pin 7 on the OBD connector and VCDS will do that, resulting in the symptoms you were experiencing.
I know you have 1001 things to do but if you would be more efficient using your PicoScope you would have been able to figure this out in 30 minutes or less. Spending time on learning more car electronic diagnostics is a hit and miss if you don't have to do this very often, so the occasional day and a half on a "simple problem" is probably more time efficient for you than training yourself on doing this sort of diags.
Interesting, so my thoughts would be that one or other or both cables have some sort of corrosion (breakdown) in the wire at some point.
IR testing a cable doesn’t always prove a broken conductor.
The “issue of testing” needs to be supplied a power source, in the typical form of Megger tester on at secondary level use a process meter to supply Amperage to it.
Anyone out there that’s bought a brand new cable roll and Con-checked it ✅, then found a failure under Megger testing knows this pain
Very thorough & well explained fault finding though Lads
🤙🏼
The resistance theory might be the one, although not really a big amount of current is going down those wires it would have been interesting to do a volt drop measurement on each CAN wires with either your VAS or VCDS dongle connected, or to have back probed T16 and see what the CAN signals looked like.
Or the answer from ODIS support would be "make sure you're running the latest ODIS version" :D
Use an old school test bulb. Wires might be too poor for decent current but ok for multi meter
Hey Rick, great video. Was the R8 fault maybe to do with contact or resistance in the pins?
Good video but im glad mine doesn't have any of this stuff then again air systems on it can be annoying, thanks for showing
10 out of 10 Ricky....top job
Fascinating as always, thanks guys, hi to Kate 👍
Love these fault finding videos. Like the black RS4 “series”
Excellent video!
Thank you very much!
I chuckled hearing the 1K0 part number. That's chassis code for Mk5 Golf platform for anyone that doesn't know.
If the wires break but have one or two strands still continuous, you can end up with a fault where your resistance and continuity check ok but when a load is applied the wires get hot and the resistance climbs quickly, I would guess the one system is more sensitive (draws a higher load) than the other.
It’s probs a frequency attenuation issue caused by corrosion or interference, I engineer at live events and am an industrial electronics engineer and have had mic cables ( which are balanced differential two wire plus earth ) measure fine on the cable tester but not ok with an actual signal , try scoping the signal with the car wires in place ?
I don't wear bobble hats as a "rule", but, DAMN IT ALL that is a fine looking hat. Oh the video is smashing also... cheers. Once I'm "flush" I suspect I'll be havin-a-gander at your MERCH.
That will be when the next government is halfway through its term of office then lol. Coz you ain't gonna be flush till this fucking lot are out!
Most workshops have a siezed/rounded/rusty bolt charge to help cover those sort of issues. As for the wiring issue, as soon as you know its not your fault (workmanship or equipment) its chargeable. Your booking in paperwork should have these clauses covered and explained on booking the job in. Its up to you then how much if any of these charges apply…. As cars get older and messed with this becomes more relevant.
Are you touching both wires with your fingers when measuring resistance I’m sure you know it’ll measure through your body,
Hi Rick your channel is fantastic. I come from a data background If I wanted to prove this fault I would use an osciloscope on your data lines this may show you by comparison to a known good signal (another car) or experience that there is attenuation (resistive/inductive or capacitance) the shape of the data will be different. Yes you have proven what the fault is but same fix. Great work hope to come see you next year. Nick
If I get R8 plus, I'm definitely bringing it down to you Ricky. True gent and very professional 😉👏👏👏👏👏🐐🐐🐐🐐🐐🐐🐐🙌💪
If you screw over the customer, he ain't coming back and he talks. But the inverse is also true, and important for a company
Unfortunately the inverse is not totally true, an upset customer will tell lots of people but a happy one might only tell a few.
I work in a vw dealership been master tech for years.
A ODIS is engineered by the devil it self. Test plans for software or software configuration are as stable as gary mccoy from a coner on the red Bull yamaha
B bypass wires without finding a broken wire or connector happens to me all the time. Often it is a abs or engine wires. But sometime ago an infotaiment com wire (not most bus just a normal wire) on a car that was 6 months old. Also perfect continuity and no damage.
The problem was something that currently cannot be explained by science. Ricky is documenting problems that will be looked upon by future generations as examples of things that confused us due to scientific understanding only being in its infancy in 2024.
I wonder if ODISS would still work if either CAN High or Low was disconnected. My suspicion based on how you described CAN is that VCDS is happy with either high or low but ODISS expects both. Have you been able to test the continuity/resistance of either of the wires?
This.
Ive had issues with odis coding the wrong calibrations and adaptions a few times now on the new skoda's for some strange reason
Had you tried load testing them?
That’s how the world should work- you get more work because you’ve earned respect.
some systems do want to see a resistance within a certain value or just will not work, there is a safety edge on a door of equipment i work on and ostensibly if you hit the safety edge you break a contact and alarm, but actually bridging out the safety edge will not work as it seeks resistance in a certain range to avoid such tactics. Don't know why it would be so in the car situation though...
Have u seen namz boost video?
“This has taken me 10 hours which would equate to £1250. I am prepared honour the half an hour originally quoted, but what do you think is fair?…” This is not an unreasonable question to ask and if received in that way as a customer I’d instantly offer to go halves. We win together and we lose together. 👍
What was the resistance of the new repair loom after joining it together properly?
As much as you want to be fair to the customers, you need to be fair to yourself, your family and your Staff. You have put too much into learning your trade, equipping your workshop and hiring the best people. And giving away hours of your time is going to have a knock on effect to all those around you. There’s a reason you are so busy Rick and that’s because people trust you. So if a job gives you unforeseen problems, the minimums you should be charging the customer is Trade or at a real push-Cost to you. Don’t sell yourself cheap Rick, It doesn’t work!
Try diagnose Dan he is a trouble shooting genius
Another interesting fault find thanks, BTW I was one of only 2 who commented on the Skoda instagram post (that met the criteria anyway) and still couldn't win owt I give up
Time for a fiver a month Patreon methinks? This is pure gold
Hi , could the problem be capacitive on the cables ? You could check with a multimeter if it can read capacitance and compare between the original wiring and your repaired wiring. Love your channel 😊
Ricky, that was wow! Thank you :)
Charge em mate. Your skills should not be given away for free. They will still be quids in compared to a dealer.
Love this content
Do like to rib Ricky, but credit where it’s due. A masterclass of being a mechanic and not a parts fitter.
No wonder he’s the best in the game 🫡
BOOM that has just fried my brain 😂
Picoscope and check can bus signals.
Could have just soldered the crimped wires to the pin on both ends. Means soldering the original terminal in both male connectors. Job done.
If I were that owner I’d be sure to leave you an envelope full of ‘folding’, and a party-sized box of Krispy Kreme.
Yeah it's stressful when the fault can't be found. One youtuber bought a buggati Veyron. He got a good deal because the car gave trouble.The gearbox was replaced. The car still didn't work to later found out that something else was broken and not the gearbox 😮.
Do we really need the door to tell the gearbox not to select drive because it's open?
You may have a tracker or something else connected into the CAN bus
Personification of logic in a illogical world ,,,, massive ironic words for a friday !
Had comms issues with different diagnostic tools due to trackers, black box and aftermarket audio phone systems fitted.
Does the shop not have heat?
cosy hat :D
Most likely a slightly higher resistance in the old wire coupled with a more sensitive signal level handing in one tool over another.
I can understand now why most mechanics are grumpy bastards now😂😂😂
I always tell the trades that did work for me if you do a good job ill tell everyone and if you do a bad job ill definitely tell everyone. I have a feelings your customers would rate pay for diag rather than throw oarts at it like the main dealer would.
You havent tested the bus signals underload
Do a voltage drop test on each can H and can L between gateway and obd port with a vcds/vas dongle in
If that shows nothing on a multimeter
Then switch to oscilloscope and visually look at the canbus signals
Bet one of them is ‘dirty’ not clean edge’d waveforms
Remember to test with dongle in port tho
These cars keep you on your toes. What is the lowest voltage these systems can work on? At least the owner can see you buy working and alway ask the Audi dealer if they come across it too.
Rick speak to rms diagnostic he’s good
Juist a general comment. Another specialist YT channel discovered - sometimes the chinese use steel instead of copper for wires.
He discovered he had wires that were attracted to a magnet !!! Half an Ohm does seem a bit high
I got no idea how you workout stuff like this, not something that can usually be taught as it’s something you poses naturally with problem solving. The actual wire I would think is not the problem but it lies somewhere with the pins on the wire and how they connect to the module, maybe there’s some sort of contamination on the pin which is effecting the connection ever so slightly and maybe it’s caused for moisture issue somewhere in the past but what an absolute head f..k of a job. Regarding the hour it took off to remove the undertray and not charging the customer, my thought is if it’s a car you work on or the dealer works on then not charging the customer for that time is reasonable but if others have been working on it then I would charge the customer