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Programming a Key to a 2012 VW Polo, NEC Clockset, using SuperVAG and Tango

By Martin Pink

With VAG group vehicles from 2009 (vehicles with precoded component security) it is not possible to do replacement keys via OBD when all keys are lost; in these situations the safest solution is to remove the clocks and program new keys to them on the bench.

Removing clocks is simple; you just undo 2 torx screws and unplug the NEC plug, then lift out the unit being careful not to drop it. We don’t need to risk damage by removing needles – we just need to remove the back cover.

SuperVAG is fully menu driven; simply follow the on screen prompts for a safe and trouble free programming experience. SuperVAG has a number of fail safes to ensure damage can’t be caused even accidently. You can’t always eradicate the human factor, so care must be taken when removing clocks and when removing the back cover to not use too much force and break clips.

We use SuperVAG and Tango for this, so once we have the clocks removed we are ready to begin.

I have connected SuperVAG and the NEC lead to my laptop and to a 2012 polo clockset – I have also connected Tango to my laptop.

Connect a 12 volt power supply to the NEC lead – connect the NEC lead to the SuperVAG unit – connect SuperVAG to the laptop – connect the blue NEC plug to the clockset.

Let’s add a new key to a 2012 polo clockset on the bench safely.

  • Select polo V, 6R chassis.
  • Select key programming in the top left corner.
  • The new screen will open – it can take a minute or 2 so just wait. Once open select retrieve data from transponder.
  • A warning screen appears informing you that on this clockset you can only proceed if you have the SVG149L lead attached – this is the blue NEC lead. We have so we click yes.
  • SuperVAG will then warn you to read notes for the procedure, i.e. the correct connections, pogo pin position etc. We have so click ok.
  • You are now prompted to ensure the power switch on the NEC cable is in the off position.
  • Here I have ensured it’s in the off position as instructed by the software.
  • The screen now tells you to attach the pogo pin to the correct pad on the circuit board and switch the leads power supply on – then click ok. This is to begin the process of putting the clockset into service mode to allow for key programming.
  • For this clockset the correct pad is ringed in black; the correct pad can be identified from the photos supplied. Some boards may not have a photo – if this is the case then the correct pad is generally the pad connected to the track that runs to the 6th pin on the top right corner. You can’t damage the clocks by selecting the wrong pad – it just won’t enter service mode until the correct pad is used.

    To have the best chance of getting it right first time, look at the chip with the writing the correct way up; look at what is now in the top right corner. Count 6 legs down and follow the track that runs from this 6th leg; it will run to a pad, this is most likely the correct pad that you will need to apply the pogo pin when instructed to do so.

    In the rare instance that this is incorrect, follow the 6th pad on each side. One should be correct. As stated using the pogo pin on the incorrect pad will not cause damage, the clocks will just not enter service mode. So you will be free to try another and it won’t cause damage to the clock unit.

  • So with the pogo pin connected to what we believe to be the correct pad, I switch the power switch on and then click ok – keeping the pogo pin connected until prompted otherwise.If you have selected the correct pad to attach the pogo pin to, when you switch on and the clocks power up you won’t hear the annoying ‘ding ding’ noises. The clocks will power up quietly, if you hear the sound straight away then it’s likely you have not kept the pogo pin connected correctly or you have the incorrect pad.
  • The software will tell you when to disconnect the pogo pin – do so only once prompted by the software – then click ok.
  • You are now prompted to check the front of the clocks to confirm that only the parking brake light is illuminated. This confirms you are in service mode – if you are click yes – if not click no and repeat the process.
  • As you can see, we are in service mode correctly as only the parking brake light is on.Had any other warning lights been on then we would have clicked no and repeated the process following the screen prompts.
  • The screen changes confirming the pin code for the vehicle and correct chip type that is needed. This will only happen once correctly in service mode – take a note of pin code if you like but is not necessary.


You are prompted to switch the ignition on and off – this is done via the on off switch on the NEC lead.

  • Once done the clocks power up normally with the annoying ‘ding ding’ sounds and all warning lights will again be on the dash.
  • You will now be prompted to save the file to your computer; I would advise saving it under a name you will remember such as a customer’s name, the reg number of a vehicle etc. Once done the clocks dump will now be saved to your PC.
  • Before continuing you will have to wait for the data read ok message which confirms that everything so far is as it should be. Once you get this message click ok. You can now leave SuperVAG connected and just minimise the screen to your task bar.
  • You must now click your Tango shortcut to open, (or whatever dump tool you use – in this case Tango.)
  • Tango will open to the last page you used it for.
  • As our clockset is VW Polo, we select the car model at the top of the screen, we then select VW and the next box opens.
  • We scroll across and click on the image generator and a new small box opens that says SuperVAG. Tango works closely with SuperVAG to simplify the process.
  • Click on SuperVAG and a new box will appear saying 2009-.
  • Click on 2009 – , a new screen will now open that’s relevant to your clock set.
  • On this page we select the icon with blue ‘F’ – the open immobiliser icon.
  • Select the file that you had read from the clockset and saved to your PC and click open.
  • Tango then opens the dump file; you have some chip info and crucially the available key slot info. In this case it confirms that this vehicle has 3 key slots used and the next available empty key slot is slot 4. We will add a new key to the clocks using a T6 ID48 chip and add it to slot 4 in the clocks.
  • So select the next empty slot and click it to confirm – in this case we are about to add a key to available slot 4.
  • At this point ensure you have a blank T6 ID48 chip in the Tango aerial. Use a normal T6 ID48 chip and not a can chip; Tango will convert it to a can chip and add the correct component security for the car to the chip to prepare the dealer chip – automatically.
  • Now click on the red ‘W’ icon to write the chip to the dump and prepare the dealer chip.
  • Tango will now ask if you are using a Megamos 48 chip or an emulator chip; in this guide I’m using a Megamos 48 chip.
  • As I’m using a standard T6, I select Megamos 48 and click ok.
  • Tango will now tell you to save the new dump with a key in position 4 – you must save this dump so you can ID it. I like to use the same name as original file from the clocks with ‘new’ added to file name; it is crucial you save this file as it is the new dump with your new key added to it that will need to be written back to the clockset.
  • Tango will confirm it has saved the new file to your PC and its name; as you can see for the purpose of this guide I selected ‘mpnew’ – click ok. The file is now saved and you can close down Tango and re-open SuperVAG.
  • We now select the ‘writing data to the transponder’ tab in the open SuperVAG software.
  • It will open your bin files; simply select the file with the new 4th key you added and saved with Tango – in this case it was ‘mpnew’.
  • SuperVAG will now write the new file back to the clock set; once complete it will prompt you to turn the ignition off and on. Do so with the NEC switch which acts as the ignition.
  • So as prompted I switched the ignition (switch) off and back on, the clocks will now power up again with the annoying ‘ding ding’ sounds.
  • You will then see the ‘writing process finished successfully’ message confirming the new file. Your new key has been written to the clockset so click ok and the job is complete.

  • The clocks are back to normal and all warning lights are coming on as they should; you can now switch off at the NEC switch, close down SuperVAG and disconnect it from the clocks. Now refit the back cover to the clocks, re-plug and refit the clocks back to the car; your new chip once inserted in a key is ready to start the car.Just for your information; you can check that the clocks have all 4 keys in them prior to refitting by looking at the side box on the SuperVAG program.
  • You can see the vehicle now has 4 keys, though SuperVAG will list these in position 0, 1, 2 and 3 rather than 1 to 4; but it confirms that you have all 4 keys in the clocks.