Polo 9N3 find PIN and key programming issues with AVDI

**autoTkey** · 12th February, 2015, 03:25 PM

Car is Volkswagen Polo 9N3(facelift, year 2008). Dash is Magneti Marelli with 9s12H256 inside. ECU is Siemens VDO SIMOS 9.1.
Problem is I can't get it working ...this damn thing(both Polo and AVDI)!
The task was to change KM and add a new transponder.
OK, I plugged in the AVDI with a smile on my face thinking it will all be over in seconds ...BUT noooo!

AVDI can't connect to dash and it can't connect to computer(when I click the read button it starts reading the ECU and after some seconds it gives a fatal error and the program force closes itself blaming it on Microsoft).
I tried all options in K-line module - nothing. So I decide to do it directly. Did the odo with UPA(but of course it didn't work from the first time - the correct recipe is to lift VDD and RESET pin and read at 6000Khz oscilator). So at this stage I have the eeprom of the dash and put it in Dump Tool of AVDI and it extracts some PIN. Then I turn on Key Learning and put car on Ignition and the 30 minutes waiting began(had to take the headlights fuses out because they are always ON and the battery almost died). After 30 minutes I try programming with the PIN but nothing. And what a surprise - It just deleted the single working key I had!

I'm posting the dump so someone could confirm to me if it really is 1791, please.
old_120685.rar

Later I thought "maybe I must select manually the ECU type in Engine Control Unit module" but laptop and car battery are already quite empty so I decided to come and ask for advice because maybe I have one last shot before I need to change the battery. So can someone give me the exact steps as for dummies for reading the ECU(if the PIN is not correct) and mostly for programming the keys, please?

**H.Wessel** · 12th February, 2015, 03:30 PM

Pin 100% 01791
If you have VCDS you can program key with it.

**autoTkey** · 12th February, 2015, 03:33 PM

Could that 0 in front of the 1791 be the problem? I entered just 1791.

**autofan1965** · 12th February, 2015, 04:21 PM

When it lost already coded keys its mean that pin was accepted. When you have tango then make keys with tango and write manually dump back. Or just give me your keys id and i prepare correct dump for you and data for transponder.

**autoTkey** · 12th February, 2015, 04:24 PM

I don't have Tango. Where will I program this dump? In dash ?

**autofan1965** · 12th February, 2015, 05:21 PM

When you post me id i give you new dump and values what you should write on new transponder. When you write dump readed with upa back to dash, dash should recognize first key again.

**aassfour** · 12th February, 2015, 05:25 PM

i get this issue a lot with the 9N
here is wt u need to do , forget the avdi , u need another programmer , like MVP , SKP , T300 , etc ...
put the ignition on with a battery booster for about 1 hour not 30 minutes and then go into programming, it should work if nothing wrong with car

**autoTkey** · 12th February, 2015, 05:43 PM

autofan1965 - you mean keys are stored in dash? I can give you ID tomorrow. I already closed....

aassfour - would china clone T300 or SBB work?
And you just answered my next question - I was wondering if 30 minutes are enough... Last time I gave it 35 minutes but immo kept on blinking... And I guess there is no way to check if I have waited enough.

**autoTkey** · 12th February, 2015, 06:08 PM

autofan1965 - here are both transponders:
https://mega.co.nz/#!AshhQIoJ!TQ6YC-...l0tyVC4usfco7M

I'll appreciate the help!

**rapidlocksmiths** · 12th February, 2015, 06:17 PM

ive had this often on the polo 9N , after reading pin you have to switch ignition off then on , wait 40 minutes to an hour , do not switch off ignition , then program keys

**simaservis1108** · 12th February, 2015, 08:46 PM

VW,Seat with M.M 9S12 dash can't be read via OBD

Almost won a fully loaded AVDI by a bet,but the other chickened out of the bet(he wasn't 100% sure).

**yugo45** · 13th February, 2015, 07:12 AM

I think this is a same dash as New beetle 2006 and up with immo 4, so forgot about AVDI or VCDS, they will erase all keys and never be able to program new or old keys.

If you save original eeprom with working key, just write it back and old key will work.

**autoTkey** · 13th February, 2015, 07:35 AM

I was also thinking of that, as the battery is on the flattest possible level already.

The question is - is there a way to add the second key by EEPROM ?
I found where the first key is programmed and I think I know where to write the second key, but is there any data I should write in the key itself?

**autofan1965** · 13th February, 2015, 08:41 AM

Post ID from both transponders and i give you important data or try first solution with ignition on because it is easier.

**autoTkey** · 13th February, 2015, 09:13 AM

Originally Posted by autofan1965

Post ID from both transponders and i give you important data or try first solution with ignition on because it is easier.

I already did last night but I guess you didn't see it.
BTW I can confirm the car starts when rewrite the backup dump with the original key, phewww...

Originally Posted by autoTkey

autofan1965 - here are both transponders:
https://mega.co.nz/#!AshhQIoJ!TQ6YC-...l0tyVC4usfco7M

I'll appreciate the help!

Original key ID is A5 C9 B3 D0
New key ID is 08 E8 78 75

Personally I prefer the EEPROM method as it is more reliable... I don't have the battery to wait 1 hour.