Audi A4 A6 PRNDS light flashing

PRNDS lights flashing

Audi A4 or A6 with flashing PRNDS lights on the dashboard.

This is a very common problem for all Audi A4 and A6 models fitted with the Multitronic gearbox.

When these lights start flashing the gearbox will go into fail-safe (limited function) mode until the ignition is cycled again. Reverse and forward gears may not be selectable once this fault strikes.


These faults may begin intermittently - maybe only happening once every few weeks or so, but this soon turns into a permanent fault and can even leave you stranded if the gearbox refuses to drive altogether.


These issues are usually caused by internal failure of the Multitronic (CVT) gearbox ECU that is bolted directly onto the gearbox itself.


Volkswagen and Audi DSG gearbox with flashing PRNDS lights.


The Volkswagen/Audi group of vehicles fitted with 6-speed Mechatronic (DSG) gearbox ECU will also cause flashing of the PRNDS indication lights and a complete loss of forward or reverse gear.


It usually costs a small fortune to replace with brand new and reprogram these gearbox ECU’s.

We offer a full rebuild of your Multitronic and Mechatronic gearbox ECU’s with no need for any programming to be done afterwards – just plug in and go!

All our rebuilds and replacements carry an unlimited Lifetime warranty, unlike the very short 1-year warranty from the manufacturer.


How do I get my unit rebuilt?

To Buy Now please choose your vehicle below and then click Get Yours Rebuilt:



Print the payment/booking confirmation email.

Package the gearbox 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 gearbox ECU with an unlimited mileage lifetime warranty. (if your unit turns out not to be faulty then we will refund your payment less a small testing fee and return shipping)


What if I don’t want to pay up front?

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.

Package the Multitronic or Mechatronic 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 your gearbox ECU and call you to advise on the outcome of testing, if your unit is faulty and you choose to go ahead with the rebuild then we will take payment over the phone using a debit/credit card.

We will then rebuild your gearbox ECU and return it to you with an unlimited mileage warranty.


If you require further information regarding either of these Multitronic or Mechatronic gearbox ECU’s then please contact us.

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Comments on "Audi A4 A6 PRNDS light flashing"
Gerry Mac says: 21/02/2022 11:55:51
I have a SeatExeo 2012 with 70k miles. The car is driving fine but when coming to a slow stop its chugging and stops. The PRNDS is flashing. Many thanks, G.
ECU Admin says: 22/02/2022 09:34:32
Hi, we would recommend scanning the vehicle with diagnostics to reveal what fault codes are stored.
Joey says: 08/05/2020 17:11:49
I have a 2007 vw eos with flashing prnd what will fix this?
ECU Admin says: 11/05/2020 10:06:44
Hi Joey, Volkswagen Eos vehicles are fitted with a DSG mechatronic that is common for failing. For more information please click here:
Donovan says: 02/10/2019 18:15:49
Hi I experienced the PRND flashing on my cluster and I selected gears but the car didn't want to move and when I switched my ignition off and back on the flashing was gone and it could drive again...what could be the is an 2002 Audi A6 multitronic 2.4
ECU Admin says: 03/10/2019 09:41:57
Hi Donovan, this could be a problem caused by a faulty transmission ECU, what fault codes did you get when you scanned the vehicle?
Kevin Evans says: 22/09/2019 07:28:39
My 2008 A6 Gets this flashing only when warm? Will drive nornmal up to this point. P0706 Fault Code. Could this be oil issue or ecu? Before i send unit to you? Regards
ECU Admin says: 24/09/2019 10:24:23
Hi Kevin, looks as though you have the CVT gearbox. The fault code that you are experiencing relates to the Range Sensor which is inbuilt into the transmission ECU, we offer test and rebuild on these units. Check the information on the following page:
Moises Bordas says: 07/09/2019 21:39:30
Where I have to send my damaged unit ? do you have store in USA ??
ECU Admin says: 09/09/2019 11:55:36
Hi Moises, you can find our full postal address here:
Gary Franklin says: 05/09/2019 16:13:25
Hi, I have an Audi A4 convertible 2005, recently I had some issues where if the car drove over approximately 10 miles and was then turned off I would be unable to start it for around 15 minutes. Today on my way home the PRNDS light has started flashing and it is a bit funny going into gear, a mechanic friend said it could be the F125 gearbox sensor? My question is what part do I need? Also if the gearbox oil was low would this cause the same symptoms? Really appreciate your help Gary
ECU Admin says: 06/09/2019 09:35:33
Hi Gary, if you are getting a fault code for F125 (transmission range sensor) then you will have a fault with the CVT Multitronic transmission ECU. Low oil level will not affect this fault code. We can certainly help with your transmission ECU, here is a link for more information on this problem and how to get it fixed:
JAMES TOWLE says: 06/07/2019 01:16:06
I have this condition on a 2006 jetta tdi. is a rebuilt available?
ECU Admin says: 08/07/2019 10:11:38
Hi James, do you have the CVT or the DSG-6 transmission? If you have the DSG-6 system then this is your unit:
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