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Reprogramming key fob after battery replacement

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Old 04-02-2008, 07:05 AM   #1
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Default Reprogramming key fob after battery replacement

After I had my car battery replaced yesterday, my remote entry key no longer works. I understand that there are ways of reprogramming the key using the second key or the valet key. Unfortunately I lost my second key and did not receive a valet key. Am I out of luck? What is the best way to resolve this situation?

Thanks in advance.
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Old 04-02-2008, 07:07 AM   #2
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Default Re: Reprogramming key fob after battery replacement

Also, AAA replaced the battery in the car. Does anyone know if AAA will cover the expense associated with reprogramming the key?
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Old 04-02-2008, 09:22 AM   #3
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Default weird, I just replaced the battery in mine and did not have to reprogram anything.

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Old 04-02-2008, 10:25 AM   #4
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Default I had to reprogram mine and my batteries were fine. It's an Audi.

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Old 05-20-2008, 09:34 AM   #5
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Default Re: I had to reprogram mine and my batteries were fine. It's an Audi.

1# you take one key put into ignition turn on.

2# close door, lock it with the key hole on driver side,with the key you want to program.

3#once it's lock take the key of the door out press the open button once or 2 or 3 or 4 times depending on which key is being reprogrammed(for the seats memory)you will see your side blink every time you press ,wait 6 secs press again once.take the other key in ignition out.

close the door and try locking with the reprogrammed key.

if you lost the program on other key it's just you didn't select the right memory,so set the right number for the right key
Ex:my wife is 1# in memory seat,mine is 2#.
so i had to press twice in 3# step.
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Old 03-07-2012, 02:00 PM   #6
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Default

Guys this definately work. I had to replace the battery on my key fob and realised it wasn't woking and had to re-synchronise the key fob.

My other spare key fob that I didn't use for about a year because the battery in that died. When I installed fresh battries it also didn't work. I tried this procedure and now I have once again 2 working remote key fob.

Initially I thought I had to pay Audi to re-code my keys! If I did, it will cost me an arm and leg!

Thanks for your post 'newfinish'.
Quote:
Originally Posted by newfinish View Post
1# you take one key put into ignition turn on.

2# close door, lock it with the key hole on driver side,with the key you want to program.

3#once it's lock take the key of the door out press the open button once or 2 or 3 or 4 times depending on which key is being reprogrammed(for the seats memory)you will see your side blink every time you press ,wait 6 secs press again once.take the other key in ignition out.

close the door and try locking with the reprogrammed key.

if you lost the program on other key it's just you didn't select the right memory,so set the right number for the right key
Ex:my wife is 1# in memory seat,mine is 2#.
so i had to press twice in 3# step.
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Old 04-18-2012, 11:44 AM   #7
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Default Reprogramming fob with single key

Quote:
Originally Posted by jackal73 View Post
After I had my car battery replaced yesterday, my remote entry key no longer works. I understand that there are ways of reprogramming the key using the second key or the valet key. Unfortunately I lost my second key and did not receive a valet key. Am I out of luck? What is the best way to resolve this situation?

Thanks in advance.
Yes, you can reprogram an fob with a single key...don't exactly know how...but read on:

I had researched the same thing after purchasing a new fob cover. The remote would not work and, as you can guess, I found out about the programming after the fact. I too only have a single key that came with the car when I bought it a week ago.

I ran across a post by a guy saying he had been working on his window with the door panel off and, while doing so, his remote started to work.

I went out to the car, put the key in the drivers side door, turned it like I was unlocking it, pushed the unlock/lock buttons ... (in what order I do not know...hence the "don't exactly know how")...and the lock clicked...the remote worked fine after that.

Good Luck...at least there is hope :-)
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Old 09-01-2012, 06:12 PM   #8
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Default Single-key reprogramming

There's a procedure in the manual for this, page 61. Well, it's not exactly reprogramming, it's more like re-Synchronizing. Due to the rolling code mechanism, if you press a button too many times while you're out of range, you lose sync with the vehicle. To reset this, they advise a 2-step procedure.

1. Press either LOCK or UNLOCK on the keyfob *one* time only.
2. Within 60 secs, use the key to manually lock or unlock the driver's door.

The keyfob should work again. (I've done it after my fob no longer worked after battery replacement, it works.)

On the multi-key programming procedure above, it DOES work, so thanks! Interesting note: the key that's *in the ignition* for that procedure does NOT need to have a valid immobilizer transponder chip; the car apparently doesn't check for that before allowing additional fobs to be registered. Also, the procedure worked even when *none* of my fobs were workable, even after trying the page 61 procedure spelled out above.

So, once again, Thanks!


Quote:
Originally Posted by CoolBreeze42 View Post
Yes, you can reprogram an fob with a single key...don't exactly know how...but read on:

I had researched the same thing after purchasing a new fob cover. The remote would not work and, as you can guess, I found out about the programming after the fact. I too only have a single key that came with the car when I bought it a week ago.

I ran across a post by a guy saying he had been working on his window with the door panel off and, while doing so, his remote started to work.

I went out to the car, put the key in the drivers side door, turned it like I was unlocking it, pushed the unlock/lock buttons ... (in what order I do not know...hence the "don't exactly know how")...and the lock clicked...the remote worked fine after that.

Good Luck...at least there is hope :-)
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Old 05-30-2013, 11:03 AM   #9
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Default

Quote:
Originally Posted by newfinish View Post
close the door and try locking with the reprogrammed key.
Door is still closed. Missing something?
Or is "unlock" instead close?
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1999 Passat 1.8T manual; Kraftwerk Turbo TM3, 550cc Bosch EV14, FSI coils, 3" MAF, 3" DP, custom TIP, FMIC, Kraftwerk Tune

2002 Audi Allroad 2.7T quattro manual; Kraftwerk Turbo TM4, 750cc Bosch EV14, FSI coils, stg 5 clutch, FMIC

2002 A6 3.0 bad (auto), waiting for 2.7T to be swapped in

2000 A4 ATW manual, blown 1.8T, waiting for build block, AEB heads, big turbo, water/meth.

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Old 06-03-2013, 04:25 AM   #10
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Quote:
Originally Posted by vtraudt View Post
Door is still closed. Missing something?
Or is "unlock" instead close?
your doing this all the time outside the car so yes you have to open the door to get out the key you have in the ignition.to then close the door to try and lock it with the button on the key you had in your hands that needed programming.
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Old 06-27-2013, 06:44 PM   #11
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Quote:
Originally Posted by newfinish View Post
1# you take one key put into ignition turn on.

2# close door, lock it with the key hole on driver side,with the key you want to program.

3#once it's lock take the key of the door out press the open button once or 2 or 3 or 4 times depending on which key is being reprogrammed(for the seats memory)you will see your side blink every time you press ,wait 6 secs press again once.take the other key in ignition out.

close the door and try locking with the reprogrammed key.

if you lost the program on other key it's just you didn't select the right memory,so set the right number for the right key
Ex:my wife is 1# in memory seat,mine is 2#.
so i had to press twice in 3# step.
2004 Allroad.

This procedure worked for me...but not exactly as described.

Two fobs - I lost the sync on both of them.

My fob is seat position 1. Wife's fob is seat position 2.

1) I put the wifes key in the ignition and turned it on.

2) I used my key to manually lock the car.

3) I pushed the unlock button once. The side marker lights blinked.

4) Waited a bit and pushed the unlock button again. Nothing happened.

5) Unlocked the car manually.

6) Removed wife's key from the ignition.

7) Tested my fob - it worked exactly as it should (seat moves to position 1)

8) Put my key in the ignition and turned it on.

9) Locked the car manually with my wife's key.

10) Pushed the unlock button once - side markers blink.

11) Pushed the unlock button again right away - nothing happened.

12) Scratched my head a bit and pushed the unlock button a third time - still nothing.

13) Unlocked the door manually with my wife's key and removed my key from the ignition.

14) Tested the wife's fob and it worked exactly as it should (seat moves to position 2)



So either the fobs remembered their seat programs, or I inadvertantly did the right sequence....but either way I did not get a lights flashing signal when I pushed the unlock button on my wife's fob the second time.

Thanks to the OP for posting this. Saved me a pain in the *** trip to the dealer. That's all my manual tells me to do.
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Old 07-11-2013, 05:12 PM   #12
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Default

2004 B6:
car battery died.
charged it.
remote no talky after.
GRRRR.
as posted previously above, and thank you VERY much for it, this worked for me:

1 - put driver window down.
2 - insert key in door lock
3 - twist to unlock and hold in position.
4 - with other paw unlock the car using the door panel button.
5 - release and remove key from door.
6 - test remote.
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Old 09-08-2014, 11:24 AM   #13
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Default another method that worked for me

I used the following method and it restored my primary key but not my secondary key. I tried 6 times no success, tried another method still no luck. So now I have discovered another moethod that worked for me

I put the key I want to program in the ignition and turned it on, leaving it in the ignition and ON I pushed the lock button on the fob. Then hey presto I pressed it again and it worked! Hope this helps someone else, I have an A4 quattro.

CeeRod

Quote:
Originally Posted by newfinish View Post
1# you take one key put into ignition turn on.

2# close door, lock it with the key hole on driver side,with the key you want to program.

3#once it's lock take the key of the door out press the open button once or 2 or 3 or 4 times depending on which key is being reprogrammed(for the seats memory)you will see your side blink every time you press ,wait 6 secs press again once.take the other key in ignition out.

close the door and try locking with the reprogrammed key.

if you lost the program on other key it's just you didn't select the right memory,so set the right number for the right key
Ex:my wife is 1# in memory seat,mine is 2#.
so i had to press twice in 3# step.
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Old 09-08-2014, 02:55 PM   #14
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Quote:
Originally Posted by CeeRod View Post
I put the key I want to program in the ignition and turned it on, leaving it in the ignition and ON I pushed the lock button on the fob. Then hey presto I pressed it again and it worked! Hope this helps someone else, I have an A4 quattro.
CeeRod
And that worked for both keys?
What year A4? B5 or B6?
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1998 Passat 1.8T manual; Kraftwerk Turbo TM2, 550cc Bosch EV14, FSI coils, 3" MAF, 3" DP, high flow manifold, S4 clutch, single mass FW, FMIC, custom TIP, Kraftwerk Tune

1999 Passat 1.8T manual; Kraftwerk Turbo TM3, 550cc Bosch EV14, FSI coils, 3" MAF, 3" DP, custom TIP, FMIC, Kraftwerk Tune

2002 Audi Allroad 2.7T quattro manual; Kraftwerk Turbo TM4, 750cc Bosch EV14, FSI coils, stg 5 clutch, FMIC

2002 A6 3.0 bad (auto), waiting for 2.7T to be swapped in

2000 A4 ATW manual, blown 1.8T, waiting for build block, AEB heads, big turbo, water/meth.

www.regulatorfix.com
www.kraftwerkturbo.com
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Old 09-22-2014, 05:31 PM   #15
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I just bought a 2001 TT. The previous owner had one fob that worked, one that didn't. I opened them to switch batteries to see if that would cure the problem. They used two different size batteries. I was going to buy a replacement battery and then remembered the fob for my PT Cruiser that burned. I popped it opened and found two batteries. I swapped those into the Audi fob, reprogrammed it using the instructions, I now have two working fobs.

THANKS for sharing this info.

Mike
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Old 12-28-2014, 04:15 PM   #16
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Default

Quote:
Originally Posted by CoolBreeze42 View Post
Yes, you can reprogram an fob with a single key...don't exactly know how...but read on:

I had researched the same thing after purchasing a new fob cover. The remote would not work and, as you can guess, I found out about the programming after the fact. I too only have a single key that came with the car when I bought it a week ago.

I ran across a post by a guy saying he had been working on his window with the door panel off and, while doing so, his remote started to work.

I went out to the car, put the key in the drivers side door, turned it like I was unlocking it, pushed the unlock/lock buttons ... (in what order I do not know...hence the "don't exactly know how")...and the lock clicked...the remote worked fine after that.

Good Luck...at least there is hope :-)
Same here. Didn't have a second key so I unlocked the door using the key, put it in the ignition and turned on the car then thrashed the open or closed a few times and Voila. Programmed. Who said idiots can't own Audis
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Old 12-28-2014, 04:15 PM
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2000, 2003, 2006, a4, a6, allroad, audi, b5, battery, fob, fobs, key, replacememnt, replacement, reprogram

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