Audi A8 ABS fault repair on the world's highest mileage A8L

I had a bad rear right abs sensor fault, electrical fault causing not only a abs light on the dash but also an ESP light and headlight range control problem.
This is what I found, and it's more common than you think!

[@mycarjournal]

My 91,000km A8 is doing this exact same thing. Going to try this repair. Hopefully this cures it. Thanks for the video!

[@Nordic_Mechanic]

it possible since time, not mileage causes this. Good luck !

[@mycarjournal]

@@Nordic_Mechanic Thanks. The car has sat in a garage by the sea for a while so I’m ready for some bad corrosion.

[@cncLM]

Man You are KING, same position fault !

[@Nordic_Mechanic]

Awesome. another one fixed. When you know how to use the software those super scary looking problems are simple to fix. Those car have so much data to helps diagnostics its a wonder why technicians have so much problems fixing them.

[@svenknauf5468]

That is awesome! I have "only" 200k km. 😅 Greetings from Germany 👋

[@Nordic_Mechanic]

You bought a new old stock car then. hahaha. Here they get parted with 200k km because of the aluminium and parts value. This one has STELLAR maintenance so Im not parting it. 600 000km here we come

[@VersaceVJC]

@@Nordic_Mechanic Very nice, keep an eye on the Cam adjusters, they fail on every 40V engine from VAG group. And for the "World´s highest mileage"; I can only tell you that my previous and first D3 had 730.000km when I sold it about 4 years ago, and it still goes strong as the owner tells... Probably now has about 900.000. It´s pretty costly to maintain, we did the air struts at around 450.000, Air Compressor few times, Cam adjusters with both chains, climate compressor, preheater, both heater cores,... etc... Keep it running!

[@Nordic_Mechanic]

@@VersaceVJC right side Cam tensioner needs replacement on mine. Noisy for a second if left for a few days. Where's the videos on you old one?

[@austinbranscomb7135]

I've got a U0415 code. Should I go ahead and replace the whole abs module

[@Nordic_Mechanic]

start by inspecting the wiring loom in the places I showed in the video. Thoser harnesses always break. It`s not a matter of if but when. ABS cant send valid message if it doesnt have valid data to work with. I fixed another last month with wiring issue there. Abs module would shut off entirely at exactly 20kmph lol.

[@Nightrunnergunner]

Once ever few weeks i get a ECP light that keeps my engine idle at 1000rpm instead of 750 sometimes triggers parking brake light & a hill start fault on my dash. then magically goes away for a few more weeks. any ideas what might be causing such random faults ? thanks for sharing !

[@Nordic_Mechanic]

Do you have abs light as well? What year is your a8? I know what's wrong if I had a full scan of your vehicule

[@adarshpreetsingh7750]

Heyy i car is showing epc light i already changed air compressor It also have a coolant leak what you think is that light for.. and how can i fix it

[@Nordic_Mechanic]

EPC has NOTHING to do with air compressor. So of course it didnt work. EPC stands for ELECTRONIC POWER CONTROL. Scan the car it will tell you where to look. You're not fixing a a8 without a computer

[@newrecruitmentway5686]

I have issue at abs still even I make the wiring

[@Nordic_Mechanic]

Post VCDS scan of abs module please

[@1995RangeRover]

Nice work!! Subscribed!! :D

[@adamkhan7736]

I thought the mileage on mine was high 269000miles( with the 6.0 w12 ) engine. Quite a flying machine.

[@Nordic_Mechanic]

Service by a good mecanic is everything.Yours is high for a w12. That's what I'll get to replace this one. Cant find many w12 with colors that I like. And those that do have like 30 000 miles. Thats a sitting car thats gonna start leaking all over the place the minute you start driving it again.

[@mjsauto6432]

How reliable are the engine and transmission of the 2004 Audi a8 with the 4.2?

[@Nordic_Mechanic]

kzbin.info/www/bejne/kJqlXpyPi9d9paM Timing belts and fluid changes, you cant kill them unless you want to. The 4.2L 5V with timing belt and port injection (prior to direct) is one of the world best engine as far as reliability. The transmission also insanely good in audis. This car has 541 000km (335 000 miles) on OEM engine and trans, never opened, never failed.

[@mjsauto6432]

@@Nordic_Mechanic reason for asking is because I had a 03 Audi with the 4.2 and it had the 5 speed automatic and it was very unreliable and with only 160k on it

[@Nordic_Mechanic]

@@mjsauto6432 03 with 5 speed auto is previous generation d2. I have no experience with those

[@nicktunesnemesisperformanceINC]

Hey brother just got one of these for the low because the mmi system went out so owner didn’t want to fix it. Sold it to me for pennies.... anyway the trip tronic don’t work and stays in D with the whole PRNDS lit up red doesn’t tell you what your in but when I put it in park it’s park, reverse is reverse and N is neutral, drive is drive and it drives and shift but no sport mode or trip tronic soon could shift it. Again for all lit up in red on dash anything you can help with I would greatly appreciate it. Might even throw you a tip if it works lol

[@Nordic_Mechanic]

If you can post a video I may be able to see something . But if you want to keep the car, invest in rosstech vcds software. It's not expensive AND will allow people like me to diagnose your issue from high end scans. Pretty sure a scan would show something's up, or we could manually look at the various dataset. BUT considering you have an issue with the mmi AND the shifter controls......someone dropped coffee in the board around the shifter. Common issue since the cupholders are way too shallow in this car. DONT replace the mmi fuse if its blown. You need to inspect and clean the circuit board before you give it power again. I like these cars and thought the highest mileage one could give me a challenge, but NOPE! I made a video about the mmi problem in this particular car, you should look it up it's in the car's playlist on my channel

[@nicktunesnemesisperformanceINC]

Veikra I did already will be doing that shortly step by step and sending the until to you or who you suggest

[@Nordic_Mechanic]

@@nicktunesnemesisperformanceINC the board around the shifter is one thing, the mmi system is another. It's behind the seat but it could simply not work for a different reason , namely a break in the optical loop between all the modules. Also, the way it acts could be due to the position sensor on the shifter being bad

[@Nordic_Mechanic]

@@nicktunesnemesisperformanceINC I can have a look at it but shipping is something to think about. If you replace the boarrd with the button, its fine. If you replace the mmi unit being the glovebox, you need audi or a memory pull and dump to get rid of component protection. You'll have to check for optical loop first

[@GhettoWagon]

334k miles? With that km?

[@Nordic_Mechanic]

That`s 539 000km which is 334 000 miles. If you think that's not a lot of miles, well, please note those are all aluminium bodies so even the shell is worth a lot once you sold all the parts. So more incentive in scrapping them even when they run than a steel body.

[@mkeyser]

WARNING! You are attempting to drive an AUDI!

[@Nordic_Mechanic]

or a car over 300 000miles that sat for a while and needs the bugs worked out.

[@TheGabe92]

No idea what they were thinking when implementing those sounds. This is borderline unacceptable levels of annoying.

[@CallOfBazsy]

Hello. I have a exactly the same problem 😖 I’m already changed the rear right abs sensor but the problem is still there. But the funny part is if I leave few hour the car after the next morning the abs and the esp light is gone until when I’m reach the 20 mp/h or 30 km/h then the problem is come back. Also I don’t have a live data on the rear right wheel. The fault code is 00287 012 electrical fault in circuit 😕 do u have any idea? Please? 😕 thanks

[@Nordic_Mechanic]

audi a8 ? degraded wiring loom near abs pump as showed. Have you opened the loom where I show in the video?

[@CallOfBazsy]

@@Nordic_Mechanic not yet! can I send u some how the vcds screenshot ?

[@CallOfBazsy]

@@Nordic_Mechanic also I made a video every morning the fault code is gone, after 15 mins or few km and it’s come back

[@Nordic_Mechanic]

@@CallOfBazsy sounds like a wiring issue else it the electronic board in abs pump. You have to unwrap that loom like I show in the video

[@CallOfBazsy]

@@Nordic_Mechanic is that matter? I have also this fault code on the abs: 00003 control module 014 defective

[@ilkersancar9940]

Hi what was the error code from you abs ?

[@Nordic_Mechanic]

it had a code for bad sensor left rear as the source code but many other popped up. with abs module in fault, steering was in fault and suspension was stiff because of steering sensor.

[@ilkersancar9940]

@@Nordic_Mechanic Thank you for the quick reply, I also have the sensor on the left rear and the right one on the front, but I don't have any problems with the steering, nor do you have any errors

[@ilkersancar9940]

@@Nordic_Mechanic I meant you have a plan of the pin assignment

[@Nordic_Mechanic]

@@ilkersancar9940 youll have an error if any sensor is bad. The error light will shine in the dash. It's not normal what you are experimenting.

[@Nordic_Mechanic]

@@ilkersancar9940 I have the pinout somewhere. Fixing another one of these abs problem tomorrow so ill let you know when I have the pinout

[@newrecruitmentway5686]

I have the same snd woring done , but now become worest

[@Nordic_Mechanic]

Scan and fix. All systems depends on other systems. So it always seems worst than it is with those spaceships

[@bapr3887]

Mate, 539000 km in A8 in Europe is less than 50% of these cars. You dont know what come to easter europe with a8 D3. XD

[@Nordic_Mechanic]

Then by all means post a video. I've got threads in various forums but not a single hard, recent evidences of higher ones. i can believe it though, those cars are durable, just never seen any. Easter europe is where they get parted out for money. 570 000km now, still on original engine and transmission. Find the higher ones, make a video and link it, that'd be sweet to know the history of those higher ones if you find them.

[@julianwagners]

@@Nordic_MechanicHey, my Dads A8 D3 has almost 600.000 Original Motor and Transmission! He bought the car with 150.000 km I can send u a video of the car and everything. And the car is used in Germany Munich City

[@CarlsGarage1]

I thought it was in miles....dude

[@Nordic_Mechanic]

It clearly says km in the dash and also in big bold yellow letters in previous videos . What does that change? Have you seen another a8 d3 over 338 000miles and the world uses km.