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Advice please, Possible key or immobiliser problem?

Dismiss Notice. Cookies Snack. Prior to starting the car I'd been changing a piece of fuel hose that runs to the rail as it was perishing. Could I have dislodged something? I did spill a little fuel when changing the hose but only a very small amount.

Audi A3 cluster immobilizer problem

I've checked and there's still fuel at the rail removed the FPR. I checked the fuses on the battery and they look fine. Checked two of the fuses in the cabin for the instrument cluster and they look intact. What am I missing? Cheers, Dave. Any thoughts? Can you clear the codes, lock the car, open it, then try to start it again. Also try your spare key if you have one as they contain a micro chip that's coded to you imo.

WestyNov 4, Thanks Westy, tried the spare key and the lock re-open sequence and still no joy Fuses, fubared cluster or a dodgy connection between the ECU and cluster.

Don't fancy pulling the cluster and ECU out so was hoping for an easier fix Even if the Immobilizer engages, the Engine will still start fine but cut out after Seconds. If you are NOT experiencing this behavior e.

If no other immobilizer related fault codes are stored and the immobilizer related meas. Remove both battery cables from the battery.This Audi A3 DSG 7 gearbox control unit is a very common failure that causes a complete loss of drive and will prevent any selection of gears.

Failure will cause the the EPC light to remain on and the gear selection lights to flash. You will also notice that the 30A main fuse blows when This is a very common failing instrument cluster for the Audi A3 -failure causes intermittent or complete loss of all instruments, flickering instruments, lights remaining on with key removed and none starting of the engine.

ABS pump and module failure commonly causing the ABS warning light to remain on and fault codes logged forand Common failing ECU that causes complete non start and problems reading fault codes via diagnostic. This seven speed DSG DL gearbox mechatronic unit is very common for failure, causing gears to stick or not select at all Internal malfunction of the EDC on top of the diesel pump will usually prevent the vehicle from starting after the engine randomly cuts out All workers within NHS, emergency services, care, education, food, utility, delivery services etc.

English English Italiano. You are here: Home Common Faults Audi. Read More. Audi A3 instrument cluster repair.

Audi A3 1. Audi A4 Instrument Cluster Repair. S-Tronic 0B5 mechatronic failure. Dashboard Instrument Cluster. ECU Transmission. These guys have helped me a few times now on different cars. Great service Fully recommended. Sent a Renault dash into them, came back fixed in a good time, great communications while it was being done! I really appreciate the work the company has done.

Really nice. Click to read more www. All Rights Reserved.Log in or Sign up. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More. Dismiss Notice. Cookies Snack. Immobiliser problem slepy Nov 15, I have a problem with immobiliser when I start the car.

When I turn the key the immo light starts flashing. I need to try to turn the key few times before it works. Sometimes I have a problem with remote opening the car. I need to open it with key and turn the ignition on to unlock the rest of locks.

Scanned it with vcds today and it shows following codes: Address Steering wheel Labels: 8E Checked Wiki and anything that comes up on google but nothing really. On most Models these systems are separate and should therefor also be diagnosed separately. In case of Engine Starting Issues please make sure that you are really experiencing an Immobilizer related Problem! On most models using conventional keys, the Engine will still start but cut out after Seconds if an Immobilizer related Problem is the cause.

On models using Kessy Systems and Electronic Keys, most systems in the car won't power up at all if if an Immobilizer related Problem is the cause. If you are NOT experiencing this behavior e.

Instrument Cluster powers up, and engine cranks but doesn't fire at all or engine won't crank this is likely NOT Immobilizer related.CraigClark Feb 29, Log in or Sign up. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

Audi Common ECU Faults

Dismiss Notice. Cookies Snack. On a few occasions since I've had the Car, I've come out of the house to find that the Car won't start. Any ideas because I'm completely baffled by this. CraigClarkFeb 29, I had a similar thing on my old Golf. Turned out it needed a new battery. If it's the newer gel type battery they tend to just die rather than fading gradually like the old batteries. It's probably got enough juice to light up everything but then the load of trying to start the car is too much.

ADi Nuff ValvesFeb 29, Thanks for your reply! Thanks again. Itll tell u the voltage and start capacity and whether it has a short circuit or not. Sidhu88Feb 29, Also had someone run a test with a Diagnostics machine that found 2 unknown errors, so they cleared these. Going to see what happens over the next week or so, if this happens again then I think I'll go down the route of replacing the Battery as suggested by ADi Nuff Valves. CraigClarkMar 1, I had the Battery changed for a brand new one, however this only made slight improvement.

The problem still occurs, only not as often, maybe once a week. I had the Car scanned with a diagnostics machine, however this didn't pull back any errors. CraigClarkSep 10, Might try checking the engine earth strap isn't too corroded or loose. ArtimusSep 10, Are the leads OK? If you've replaced the battery and still having issues the next thing I'd check is the wiring. MartayMcFlySep 10, CraigClarkNov 5, Static charge build-up in a dash or electronic component?

Car Won't Start, No Dash Lights

ArtimusNov 5, This Audi A3 1. The failure is a well-known common issue for the Audi A3 and will prevent the engine from starting when the failure occurs. You may find that the fault is intermittent in nature to start with but then becomes a permanent failure soon after. Sometimes turning the ignition on and off in quick succession may temporarily allow the engine to start but the fault will return once the engine is switched off.

You may notice that the engine management light fails to illuminate on the instrument cluster when the fault occurs. You may also find that your diagnostic equipment will fail to communicate properly with the engine system to retrieve fault code information.

These above symptoms are all deepening signs that your engine ECU may have failed. We can test and repair your own ECU or we can supply replacement units from stock that are pre-programmed: so there is no need for a trip to the dealer for programming - just simple plug in and drive away.

Once all the faults have been identified we then move onto the rebuild stage, replacing defective components with those of a higher grade to OEM standard.

All original programming is retained during the test and rebuild service, meaning that all you need to do is plug the ECU back into the vehicle and secure it, after that just drive away. We rebuild these Audi A3 engine ECUs for manufacturers, main dealers and Audi specialists all over the globe, so you can be assured of our extensive experience and quality of our work.

Package the Audi A3 engine ECU inside a sturdy box with plenty of packaging material make sure you include your confirmation email in the box. Send us your package by tracked courier the shipping instructions are on the confirmation email. Once received we will test, rebuild and return your engine ECU with an unlimited mileage lifetime warranty. Fill in and submit this test form. If you require further information regarding this Audi A3 engine ECU then please contact us.

All workers within NHS, emergency services, care, education, food, utility, delivery services etc. English English Italiano. Programming: All original programming is retained during the test and rebuild service, meaning that all you need to do is plug the ECU back into the vehicle and secure it, after that just drive away.

Quality: We rebuild these Audi A3 engine ECUs for manufacturers, main dealers and Audi specialists all over the globe, so you can be assured of our extensive experience and quality of our work. This is not a problem, if you prefer this option then follow the following steps: Fill in and submit this test form. Print the booking confirmation email. We will then rebuild your ECU and return it to you with an unlimited mileage warranty.

Dashboard Instrument Cluster. ECU Transmission. Hi can you explain the warranty lifetime unlimited mileage means please. Is it covered for the lifetime of the car. Hi Linda, for more information regarding our warranty please see the link at the bottom, right hand side, of the page.

These guys have helped me a few times now on different cars. Great service Fully recommended. Sent a Renault dash into them, came back fixed in a good time, great communications while it was being done! I really appreciate the work the company has done.

audi a3 immobiliser fault

Really nice. Click to read more www. All Rights Reserved.Log in or Sign up. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More. Dismiss Notice. Cookies Snack. Alarm keeps going off sporadically paulious Oct 7, Hi, Over the last few weeks my alarm has been going off usually a few hours after it has been parked on my drive.

Any help would be greatly appreciated by myself and the neighbours. Cant really help too much. But Are you sure its not the battery which is in the siren in the rear by the cd changer Not really had a look but i will do so now, is that the battery backup on the alarm siren. I have heard if this is low the alarm may sound, just odd why it wouldn't do it as soon as you lock the car though.

Thanks for the post PS Just did a quick search on the Terminal 30 problem and some people say this comes up if the main engine battery has been disconnected at some point which it has last night to shut the thing up! NHNOct 7, Thanks NHN I will have a dig around once daylight is back. Is this kind of damage easy to see once i have found the box? Atleast then i guess if i see battery acid all over the board that has to be the cause of these errors.

In adherance to your comment my rear wiper wash motor is shafted literally and when used water leaks into the bootlid so that could have damaged the electronics. Nope the locks have worked fine since i have had the car, both with the keyfob and manually.

audi a3 immobiliser fault

It would be nice to disable the interior ultrasonic sensors but the button on the door pillar is missing. However as you have said turning this off probably wouldn't help if it was the electronics being shorted and as the door sensor has apparently triggered the alarm also.

I will have a look in the morning and write an update. Thanks again. First step would defininatly to get that siren checked out,as i had the exact same problem with mine,was the siren.

McblowOct 7, I don't suppose Audi would have been so stupid as to have a fuse that would disable the alarm?

audi a3 immobiliser fault

I have to drive the car to bristol this week before i can even get a replacement board if that is the problem. I don't really want to have to resort to disconnecting the battery everytime i get back from work then reconnecting it every morning.

McblowOct 8, Has a similar problem on my S3. Recall getting similar codes. Once dried out, the problem went away for a good while. Have a look. Sorry to be vague, was 18 months ago. I ended up leaving the car unlocked on the drive most nights!Remember Me?

Page 1 of 2 1 2 Last Jump to page: Results 1 to 10 of Thread: Audi A3, 75X short to plus. Thread Tools Show Printable Version. Audi A3, 75X short to plus Hi, I now have code in module I am getting the power for this radio by soldering a new cable to one of the black thick wires running INTO the main fusebox in the dashboard on the drivers side.

But I can not see how this should trigger this fault code? I have no a "Y" cable running into the fusebox. I just remover the insulation on the wire for aprox. This new cable does have a 20A fuse, and then running to the radio. The radio is grounded by a screw under the dashboard not one of the earth connections, but there is plenty of power on the transceiver, so I think the ground is good. It might just be a accident that this happened after I installed the radio, but I find it strange.

I had the battery disconnected for a while when I did the soldering on the backside of the fusebox. Any hints or inputs? It is seeing the reverse back feed of current Hook it up correctly with the proper auxiliary outputs. See WD and repair manual. In Conjunction with Hmmm, I really can't see how this can back feed current?

I also looked at the WDbut I could not find any aux output? But again, I really can not see how this can create a back feed of current? Can you please explain? If there is a short somewhere due to a error in the work I did, yeah then I could see how there will be a backfeed. But when I am just getting power from the wire in the fusebox, and running a wire straight to the radio, then I am really struggling to see how this can back feed current?

But I am asking for a explanation, it might be that Jack is correct, and that I am really back feeding current into the system. But I can not see how this is possible with this solution, and I might learn something by asking for an explanation.

The reason I am saying this probably has something to do with my instalation is that this fault code was not present before I hooked up the radio afaik.

What I did was disconnecting the battery, solder a new wire to one of the thick black wires running INTO the fusebox, conncted the battery again, and the code was present. I think I have to disconnect the battery again and demount the fusebox and look if there is some short on the backside of th fusbox, that would explain the code. But as previously said, I really have a hard time to see how my solution can back feed the system. So I now longer think this has something to do with my radio installation.

Any suggestion where to start look then? The strange thing is that this code is NOT present in every log I have. I bought this car 3 days ago, and the fault code is present in the log I have on the car before I bought it when I checked the car before I decided to buy it as a car 2.