Hi - let my 98.5 a4 2.8 sit a while over winter without using it. then replaced (car) battery this spring. Since replacing battery, my locks do not work. They don't work at all, not by FOB or by buttons in the car. I can lock/unlock drivers door by using the key, but truck and other doors do lock/unloc.

I don't not have a vag com. Can anyone help me try to get locks working again?

 

Drive it for a few days and they will work again.....basically, your locks on your 98 are vacuum controlled. If you leave it sit and don't use it, OR disconnect the battery for a period of time, they lose vacuum. If you drive it a few days or for some time....they will work again.

 

Have you had to fill up yet? The fuel tank door operates on the same system as the door locks. If you stick your year near the cubby hole on the passenger side of the trunk, you should hear the little motor whenever you press the lock or unlock on the key fob.

 

Hi - this is great to hear!. Do you know if it is simply a function of time and driving, or , is there anything that will speed up the process (like pressing the locks repeatedly)?

thanks for your post

 

bump bump

 

Still not working?

 

no, not yet. although I haven't been daily driving it yet either.

Do you know what makes it (hopefully) build vacuum up again? (running time, pressing lock button, starting vehicle, ??)

 

Is the pump running or not? When I had to repair mine, it started working immediately. Pressure or vacuum did not need to build up over time.

 

OK went out and tried it again. Here is what I did/observed:

- checked central locking fuse and it was fine
- tried pushing lock button: heard and 'electrical click' which seems to come from back right (pump) area, but did not hear the pump run.
- I do now recall that locks (pump) had been a bit delayed (pump ran longer) when they last worked.

- I also believe that the 'electrical' part of the central system must be working fine because: 1) the horn chirps if I hit the lock button on my remotes and 2) I observed that click sound when sitting in car and hit lock button and 3) the little red light by driver lock appears to arm/disarm as normal when I'm outside vehicle and use FOB to arm(lock)/disarm(unlock) (even though lock do not actually move)

So, at this point I'm assuming my pump must be the culprit. NEW QUESTIONS:

- Are there any domestic USA options for rebuild parts for the pump? I've found a guy on ebay that offers parts, but he is not in usa an it seems a bit spendy.

- If I opt for a used pump, will it be plug and play or will it require any programming type complications to make it work?

- Any other suggestions/options?

 

see updated post for more detail, but no I don't think it is running.

how did you repair yours? any suggestions for rebuild parts/kit?