Central locking problem: locks and unlocks again

[chevrolate]

[AVEO 5 LS 2008] Central locking problem: locks and unlocks again

Hi all!

Well, the title says it all. A couple days ago I realised that my car was unlocked and I found it odd, once I remember to lock it. Then I locked it again with the FOB and it locked, but unlocked again like a loop. I checked if there was an open door, but all doors were properly closed.

I didn't find any related issue on the Internet (found many problems with central locking but none of them were the exactly the same or with the same cause, I think).

Symptoms:

• Door locks and unlocks if I press the FOB lock BUTTON
• Does the same if I use the key manually (both keys)
• It locks without problem if I unplug the central locking fuse
• I can't press the door lock down if the door is open (I am not sure if it is supposed, to be honest. But I can do it on the other doors)
• I can press the door lock down with the door locked. However all the doors lock (ok) and unlock again.

I already did:

• Disconnected the battery for 1 day. Battery is full charged.
• Check the fuses (they're ok)
• Disconnected the door lock actuator and cleaned the connection with contact spray
• WD-40 (Because... Why not?)
• Replace FOB battery

[EAD15]

You need a new driver side door lock actuator. They go bad. Common problem. You know how to get to it now, just replace the entire module. The symptoms of a bad actuator are all variations of the same theme. Either the door locks cycle repeatedly or the locks want to stay unlocked after you try to lock it.

I go into more detail how the system works below. In your case, it's just seeing an "unlock" trigger when you try to lock the door

https://www.aveoforum.com/forum/f81/power-locks-snapping-off-sounds-like-machine-gun-going-off-25210/#post213957

[chevrolate]

Thank you for the reply!

In fact my door cover is still off because I though somehow it could be the door lock actuator, so I wouldn't have to mount it and then unmount it again to replace the actuator. My next challenge is to find an actuator (I'm not sure if I can find any in the junkyard), but with a little bit of research I think I'll get one.

However, replace it is not the easiest thing to do because it's in a very tight location and I can't see what I'm doing, perhaps the best thing to do is to ask my mechanic to replace it.

I'll give it a try and then I'll give you feedback

[Eg.h2o]

https://www.amazon.co.uk/Actuator-FR.../dp/B07MS8Z9HN

ships to Portugal

[EAD15]

Thank you for the reply!

In fact my door cover is still off because I though somehow it could be the door lock actuator, so I wouldn't have to mount it and then unmount it again to replace the actuator. My next challenge is to find an actuator (I'm not sure if I can find any in the junkyard), but with a little bit of research I think I'll get one.

However, replace it is not the easiest thing to do because it's in a very tight location and I can't see what I'm doing, perhaps the best thing to do is to ask my mechanic to replace it.

I'll give it a try and then I'll give you feedback

The limited access is the worst part of replacing the actuator, I agree. Otherwise it would be a fairly benign process. If you have a flexible inspection camera you could try that for help. Or try taking a picture with your phone if you can get a decent angle.

When I replaced mine, I was able to mostly orient myself via touch after using an inspection camera to see how it all connected.

[chevrolate]

Hello everyone, thanks for the suggestions! Apologies for the delay, but I had other issues to sort out at the time and put this on the back burner. I didn’t want to follow up without having something substantial to share. But today, I’ve got an update
I managed to find the actuator and I have it now (it arrived today). I’m not sure if I’ll be able to test it in the next few days, and I only have time to work on the cars over the weekend. Since my 2-year-old son (who is obsessed with the garage, cars, and tools) is always with me on those days, I doubt I’ll have the patience and focus needed to replace the part. So, I think I’ll speak to my mechanic to get him to replace it. Since the door panel is already removed, it’s just a matter of swapping the mechanism, and he can do that in no time.
I’ll update you once I’ve replaced and tested it

[chevrolate]

Hi!
I've got news for you. My mechanic is a bit busy and couldn't work on my car until next week, BUT I had a couple hours alone today so I decided to give it a try.


Well, the actuator was actually easier to replace than I thought, it only requires a bit of patience and focus. Having the new part on the side helps to understand how all the things are connected


It took about 45 minutes to do all the work (the door panel was already removed) and now it works just fine!


Thank you so much for all the help!