Reprogram Key Fob Through Trunk

[T3R Audi]

Hey all,

So I've had the S4 going on 10 years now and I have an issue that is kind of unique to my car. The previous owner had the side door locks shaved off and in order to re-program the key you need the side locks as you all know.

When my battery died a few years back a guy at a dealer was able to reprogram it from the back and gave me directions, of course I misplaced them.


Does anyone know the steps to do this through the trunk ?


Ive searched a bunch on this forum and others and no luck yet.

[boomtime]

Since the trunk lock should be the same as a door lock to the ecu, wouldn't it be the same procedure? Have you tried that?

[T3R Audi]

Yes I followed this procedure and there was nothing, I put the my other key in the ignition one click forward

Close and lock the drivers door with the second key.[*]On the second key (the one in the drivers door) press the 'UNLOCK' button ONCE only. The lights will flash on the car, but the doors will remain locked[*]With the second key still in the drivers door, unlock then lock the door again.[*]Pull the key from the slot and test remote functions.[*]Open drivers door, remove key from ignition. [/ol] If both of your remotes don't work, do the above for the first key, but on step #3, press the 'UNLOCK' button twice. The lights will flash twice, then continue on with step #4.

[T3R Audi]

does any one have any other thoughts on this, there has to be a way to program the key fob via trunk lock

please and thank you

[boomtime]

Maybe more specifics on your ecu, engine, immo version and model year audi would help.


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[ziili]

Hello!

I have exactly same issue as T3R... I have the front doors modified and only existing lock is at trunk. All remote key presses are shown correctly in the [35 - Cent. Locking] 003 group while reading with VCDS, but cannot do the [Adaptation - 10] Enter channel "01" (May be channel "21" in some Audi models), just gives error... Instructions at http://www.ross-tech.com/vag-com/car...-matching.html for the VCDS.

Also have tried to entering car to programming mode, by inserted service key into ignition with power on, locked the door from trunk and the locking&alarm works as expected. Pressing the unlock button at remote will flash the blinkers, so should be in the program mode, but no luck to get the key learned. Tried these without luck: http://www.audizine.com/forum/showth...ob-Programming

My car is 1999 B5 S4 with 8D0907551M ECU. Any pointers to fix this would be great...


-Ziili

[airjawed]

Make sure to clear previous remote programming first... when you do the driver door/trunk programming you might be programming the wrong spot. You can program 4 remotes so maybe your 1st spot is already filled?

You can clear via VCDS or by pressing remote unlock like 5 times in a row or something like that.

[ziili]

Make sure to clear previous remote programming first... when you do the driver door/trunk programming you might be programming the wrong spot. You can program 4 remotes so maybe your 1st spot is already filled?

You can clear via VCDS or by pressing remote unlock like 5 times in a row or something like that.

OK, so is the preferred method for clearing with the VCDS or the 5 presses in program mode with remote? I tried the 5 times press without any help or change. The keys I want to get working has been used earlier with the same car, the car was long time without battery and also the remote battery died, so the pairing got off-sync.

So how can I see if the clearing is actually succeeded? If connecting with VCDS I do see 0011 in second field at [35 - Cent. Locking] [Meas. Blocks - 08] 003 which denotes that 2 keys are programmed to system as expected. Also the keys are recognized correctly by the car as I can see the climate to remember the values for each key. So after clear, should the 35 08 003 show 0000?


-Ziili

[airjawed]

I used VCDS to confirm things but not to program or clear. I did this recently since my door lock vacuum pump failed so I did this along with coding to get the features I wanted(remote window operation for example). This is the page that has everything you need for remote programming in our cars:

http://wiki.ross-tech.com/wiki/index...entral_Locking

First I would try to synchronize your existing remote. It is in the second section.

If that doesn't work then you can do the remote control clearing section and then confirm with the VCDS measuring block 3... if you did it right just a bunch of 0000 in field 2.

Last, follow the remote control matching section. Requires one key for ignition and one for door/trunk which you are programming. If you do it right the locks will work and block 3 field 2 will show 0001 if programmed into first position.

[ziili]

I used VCDS to confirm things but not to program or clear. I did this recently since my door lock vacuum pump failed so I did this along with coding to get the features I wanted(remote window operation for example). This is the page that has everything you need for remote programming in our cars:

http://wiki.ross-tech.com/wiki/index...entral_Locking

First I would try to synchronize your existing remote. It is in the second section.

If that doesn't work then you can do the remote control clearing section and then confirm with the VCDS measuring block 3... if you did it right just a bunch of 0000 in field 2.

Last, follow the remote control matching section. Requires one key for ignition and one for door/trunk which you are programming. If you do it right the locks will work and block 3 field 2 will show 0001 if programmed into first position.

I have tried to sync the existing keys (2x of those) without any luck. I have feeling that both of the keys might be coded to key 1 which now causes the issue... Like said, the 5 press clear did not work, I do still see the 0011 in the block 3 field 2. Need to try clearing the keys with the VCDS then, report later what happened.

But, if I cannot clear the keys it seems to have something wrong, what would be broken and where that device is located? I think the keys are not stored in ECU, but somewhere else...

[Speed4Avant]

99% sure you can't program through the trunk. On my avant the drivers door lock was removed as well. I ended up having to take off the drivers door panel and then use a jumper wire to the wires that would have gone to the lock and follow the same procedure to program as if the key was in the drivers lock.

[ziili]

99% sure you can't program through the trunk. On my avant the drivers door lock was removed as well. I ended up having to take off the drivers door panel and then use a jumper wire to the wires that would have gone to the lock and follow the same procedure to program as if the key was in the drivers lock.

I believe that it would be possible to program through trunk lock, that was earlier done for this particular car.... Both keys were programmed via the trunk lock, but at some point second key stopped to work with the central lock. It gave 00956 - Key 2: Adaptation Limit Surpassed code and the reason for that was never root caused. As the Key 1 worked I kept using that. But now it seems that the Key 1 is at same error mode, giving 00955 - Key 1: Adaptation Limit Surpassed, which explains why they keys are not working...

My worry is that the central lock module (or what ever module contains the key info) is not working as it should. It seems not to clear the old key info and it seems not to take any new fobs programmed. Also the 35 adaptation 10 will just give error from bot 001 an 021 channels, although missing these channels was mentioned at Ross-tech pages to be possible. If the module is the faulty, where that is located physically? If that needs to be changed, does it affect to Immo or anything else?

[boomtime]

99% sure you can't program through the trunk. On my avant the drivers door lock was removed as well. I ended up having to take off the drivers door panel and then use a jumper wire to the wires that would have gone to the lock and follow the same procedure to program as if the key was in the drivers lock.

This was more the direction i was thinking, remove door skin to simulate the lock being present on the harness...


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[ziili]

OK, now tried several times to clear the old keys, and they seem to stick. VCDS says that cleared, and the 35 08 003 show still 0011. Also tried again the 5 times clear in program mode but without any better luck.

If trying to code the keys, the 35 will get Adaptation Limit Surpassed triggered.

Is the central locking unit faulty? Where the central locking module is located? Or am I still doing something wrongly? What else I could try?

[okkim]

It is on the right side in the trunk:
http://forums.vwvortex.com/showthrea...ks-on-a-budget

[airjawed]

Does the key in the trunk lock/unlock your doors? This is an Avant right? My car is a USA car so not sure if the lock and window logic is the same as for you. What is your lock coding in VCDS? Is it 16236?

I ask because if the doors don't lock from the trunk then it wouldn't work but may be due to the lock coding. To be honest I programmed from my door not from my avant rear hatch but in my owners manual it says I can lock and unlock from the back of the car. I'll try to test and let you know if I remember and get a chance.

[Speed4Avant]

Does the key in the trunk lock/unlock your doors? This is an Avant right? My car is a USA car so not sure if the lock and window logic is the same as for you. What is your lock coding in VCDS? Is it 16236?

I ask because if the doors don't lock from the trunk then it wouldn't work but may be due to the lock coding. To be honest I programmed from my door not from my avant rear hatch but in my owners manual it says I can lock and unlock from the back of the car. I'll try to test and let you know if I remember and get a chance.

you can unlock/lock from the trunk. I had 0 luck when I ran into a similar issue trying to program a key fob in the trunk. Only thing that worked for me was removing the door skin as I stated earlier in this thread.

[airjawed]

you can unlock/lock from the trunk. I had 0 luck when I ran into a similar issue trying to program a key fob in the trunk. Only thing that worked for me was removing the door skin as I stated earlier in this thread.

You may be right.. but seeing what a pain it is I thought maybe there was a reason it didn't work. My avant hatch does not operate the door locks but I think it may be my lock coding (I changed the pump recently). Also, my manual says I can in one place but says I can't in another. Conflicting info might mean it is possible... I mean you have an avant and can do the locks from the hatch but I can't... what coding do you have in the locks? 16236? That is what I have but can't do the locks from the hatch for some reason.

[ziili]

Does the key in the trunk lock/unlock your doors? This is an Avant right? My car is a USA car so not sure if the lock and window logic is the same as for you. What is your lock coding in VCDS? Is it 16236?

I ask because if the doors don't lock from the trunk then it wouldn't work but may be due to the lock coding. To be honest I programmed from my door not from my avant rear hatch but in my owners manual it says I can lock and unlock from the back of the car. I'll try to test and let you know if I remember and get a chance.

Yes, all doors are locked/opened by trunk and when locking doors immo is activated correctly. Car is Europe Avant, pretty sure that the VCDS coding would have been 16236 but no access to that info now.

My feeling is that as the key clear is not working with either methods, something needs to be broken at the central lock module, will be start looking that next. Unless there is some ideas that I could still try to make the module to clear the old key info.

Removing the inner door skin is not big issue, but that still needs some time to do but as the keys seems to be stuck I am reluctant to do that as I have a feeling that it will not bring any solution in my case. Or was Speed4Avant having the same Adaptation Limit Surpassed foults while trying to code the keys with trunk lock? Did you try to clear the old coded keys while you were working on this?

[airjawed]

Yes, all doors are locked/opened by trunk and when locking doors immo is activated correctly. Car is Europe Avant, pretty sure that the VCDS coding would have been 16236 but no access to that info now.

My feeling is that as the key clear is not working with either methods, something needs to be broken at the central lock module, will be start looking that next. Unless there is some ideas that I could still try to make the module to clear the old key info.

Removing the inner door skin is not big issue, but that still needs some time to do but as the keys seems to be stuck I am reluctant to do that as I have a feeling that it will not bring any solution in my case. Or was Speed4Avant having the same Adaptation Limit Surpassed foults while trying to code the keys with trunk lock? Did you try to clear the old coded keys while you were working on this?

In my case I cleared old coded keys using key method in the driver door. I could not do it with VCDS... but used VCDS to confirm that it was cleared.

I need to figure out why my trunk does not lock/unlock all my doors. Not a problem when everything works but what if I have an issue with my door rendering it useless? That is why I asked about your coding vs mine as well.

[ziili]

OK, long time - no updates, but got my issue solved finally.

Here was the knowledge already at start, my problem was the old keys not clearing and that seems not working neither via trunk lock nor the VCDS clearing method. But, like was assumed, the driver door lock was the working at the clearing the old keys. Removed the inner door skin and located the connector (was at top-middle, small purple 3-pin connector). Using that connector I could operate the locks by connecting middle pin and sides to lock other side and unlock another. Then, service key to ignition, power on, doors lock with the connector, 5x press on FOB and keys were cleared. Then I got the programming done instantly for the both keys in normal way.

Should have listened Speed4Avant about the clearing, but now I know. Wanted to ping this old item here if/when someone has the same issue.

[ziili]

OK, long time - no updates, but got my issue solved finally.

Here was the knowledge already at start, my problem was the old keys not clearing and that seems not working neither via trunk lock nor the VCDS clearing method. But, like was assumed, the driver door lock was the working at the clearing the old keys. Removed the inner door skin and located the connector (was at top-middle, small purple 3-pin connector). Using that connector I could operate the locks by connecting middle pin and sides to lock other side and unlock another. Then, service key to ignition, power on, doors lock with the connector, 5x press on FOB and keys were cleared. Then I got the programming done instantly for the both keys in normal way.

Should have listened Speed4Avant about the clearing, but now I know. Wanted to ping this old item here if/when someone has the same issue.

Also airjawed mantioned this clearing only through drivers door... AND, forgot to look the lock coding. Will do that (hopefully in less time than solving this...)

[ziili]

Also airjawed mantioned this clearing only through drivers door... AND, forgot to look the lock coding. Will do that (hopefully in less time than solving this...)

OK, looked my coding from 35 Centr. Locks - Coding 07. Software coding 13130 and Workshop code 06326. Was this the info you were looking?

[airjawed]

Can't figure out what features you have based on your coding. The list on the ross tech site is missing some coding. I think my trunk doesn't lock the rest because I have to do a +1 to mine. I'm at 16236 and based on another site if all features are turned on I should be at 16239? It works so maybe I shouldn't mess with it?!

Thanks for updating your solution for others by the way.