Probelm with key fob / central lock / COMFORT CONTROL MODULE ?

Hello everyone. I have audi A3 2.0 2005 sportback 8p and I have an issue with the comfort module ( i thing so ).
So what's happening. my remote keys - both of them are not working when i press anyone button, not matter unlock lock or baggage.... i change the battery on each one and try to reprogram on few different ways (looking youtube) but nothing happen.... I found where the module is, check it is everything OK and I noticed that one of the pins was corroded... so i clean it with electric contact spray and back everything inside as factory do that... after a few minutes i try again with he fob but nothing again.... when i press any button i hear some sound (something like clicking) from the module but not working at all. Central locking is perfectly working when i put the key inside he door. It open and close manual with the keys on the doors windows are also working when i hold the key on the door - everything is working except the remote!

So im now confused ..... i was reading on the net - somewhere i read that it can be problem the module and someone told me than it can be the both keys ( it can not be reprogrammed ).

my central comfort module is: VW AG 850 959 433 E

i try with similar module - same numbers but only the letter was C instead of E - it works with the OTHER fob keys but not working everything... - I know that it must be everything the same or it will not work properly..

Anyone with problem like this? how to try to resolve this problem?

I finally figure out what is the problem... it is not the module - the problem are the keys! i was to a shop where keys are made re programming codding etc.... they think as i think as first that the problem is in the module but they are wrong (same as I) - both of keys are damaged rolling code is damaged to both of the keys! - when he try to reset / restart keys they are working ONLY ONCE and every next click on anyone button is failed... so he made a new copy for keyfob and it works perfectly! - he told me that if I want original audi key i will cost almost 150 euro for 1 key and i have second option for similar key (new but not original ) and it will cost around 65 euro....

now i want to konw - is it possible to buy other key but im not sure how to check the coorect one because on the plastic cover it has some codes also.... i see codes i see that they are working on 434 Mhz producer by HELLA etc etc.... - im not sure if i can get that on aliexpess...

other idea wich im not sure also - can i buy used key from other audi a3 and earse the program inside that key and try to reprogram...

anyone experience with this ???

Update - as i figure it out that both of my keys are not working properly i decide to order just 1 key on aliexpress for test if i can adapt to my module... important part for ordering key are the next parts... on the side of key key should have numbers and characters - those are specified to each vehicle... - you should order by that marks.. mine is: Manufacturer Part Number:8P0 837 220 Frequency:434Mhz Part number:8P0 837 220 Other Part Number:5FA 009 272-10 when those marks are the same as original key it can be adapted to the CCM module but only for central locking module!!! this is not for immo! - for the immo you should know which chip you have in the key fob and program with special program ( addapt to your immo ). For now i have made an order on and im still waiting to get the key. I will write next post when the key arrive and test what i'm gonna do with it.

Regards from Macedonia

I finally solve the problem. Ordered new key and just arrived.. Simply I adapt to car with vcds and works properly... Just change the chip from the old key to new one for immo ant that's it....

Abi said:

You only need a sharp knife and slowly cut it out. There normally only siliconed in. But be careful not to break it as it’s glass.


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Click to expand...

Just like that.... A small Screwdriver and 15 minutes work....