Hi, first post so apologises if in wrong place or formatted wrong.

I just bought an A3 and the keys work if i actually put them in, and will lock the car wirelessly 90% of the time, but never unlock the car ever, also the front passenger door won’t unlock sometimes even when i try to unlock once ignition is on and i press the unlock button inside, but other times it does, but will always open when i use the latch inside, any ideas what i need to do to fix it - key batteries have been replaced but still only lock the car

 

I can not help but have similar issues. My central locking problems started some time after the warranty was up. I am the original owner.
My drivers side rear door intermittently would ignore the key fob. Then would no longer lock or unlock on command from the fob or drivers door controls. I would need to pull the lever and open it from the inside if it was locked and use the manual lock, the turn screw on the side of the door, to lock it. I rarely need that door open.
Many months (or was it a couple of years) later the front passenger side door joined in the action, or lack there of. I do use it occasionally.
I did talk to one of the mechanics while having a recall item visit and he indicated VW didn't have the best central locking system and repairs would be likely be costly for the age of the car.
The key fob will no longer lock or unlock anything. The second and rarely used original key fob was the same, and yes, fresh batteries. I can't remember if the "Panic" button worked or not when I gave up on locking/unlocking with the fob. I have needed to use my key in the door to lock and unlock the car for some time now and the 2 problem doors have stayed that way.

 

My 2013 A3 started having problems with locking/unlocking,window switches,and in general with the controls on the driver's door. The problem turned out to be one that is common to all makes: The wires in the harness from the body to the door had started cracking from years of flexing as the door is opened and closed. The fix was a new harness.

 

Any update?

 

For the key fob issues with your Audi A3 2007, ensure you've replaced the batteries correctly. Attempt re-synchronization and rule out signal interference.

 

Thanks, I will try it.

 

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