Front driver door lock and rear right door lock fixed
My 03 Manual TD5 one has some funny things with locks since the day I bought it last month (did not know much about the issues until I came home to do more research).
1- Will lock only 4 doors including back door (except the rear right door) with remote (50%)
2- Will lock only 3 doors (except driver door, and rear right door) with central locking switch.
3- Will lock 4 doors including back door (except the rear right door) with key (100%).
4- Will unlock 4 doors including back door (except the rear right door) with key (100%).
5- Will NOT unlock driver door and rear right door with remote.
6- Will NOT unlock driver door and rear right door with central locking switch.
Even today the remote would not lock the doors, and even would not let me open the driver door a few times. So I pull the trigger to do the job because locking and opening driver door from the passenger side is not funny anymore.
(Replacing battery in the remote would not help anything)
So far, I replaced the rear right door motor with one used replacement lock from a wrecker => it fixes the issues on that door. It will work unlock and lock as normal with the remote and central locking button.
Next step is to look at the driver door motor and see how it goes. This is when the funny part of the game starts.
Firstly, opening the driver door only to find out that the door motor seems still responses to the signal with UNLOCK only, however, it would not fully unlock the door, nor showing the lock moving.
Secondly, trying the replacement door lock without luck. It shows the same thing that the replacement door lock seems working but would not response with LOCK signal but only a little response with UNLOCK signal.
Bugger, I thought the replacement part was faulty too because it looked extremely dusty both outside and inside.
No other choices, I opened the replacement door lock plastic cover to learn the mechanism of the lock, then I used 1 bottle of degreaser to clean it thoroughly. You should know that 1 big bottle of degreaser is a lot of degreaser for this small lock. Btw, then it looked a lot nicer.
Tried again, no luck and still no response with LOCK but only a little response with UNLOCK.
So far, I tried to clean it again 3rd time with more degreaser, and free all the moving parts as possible. Then I tried to lock it in the fully locked position and plug the power cord. Voila, it worked. Since I did free all the moving parts, now the reward is that it works with both Lock and Unlock from remote, and same with Central locking button. I decided to add some oil (engine oil) to lubricate all moving mechanism and I can hear it moves smoothly then.
Well, to make it short after getting it working as usual (2 steps locking system) and learnt all the mechanism behind the doors on the right side, now I believe some points:
1. The rear door lock might not be dead since it still responds to the signal. The dust likely blocked its movement.
2. The front door lock might not be dead too since it still responds to the signal. The dust likely blocked its movement.
3. It is very possible to add in an aftermarket keyless entry and alarm remote control (in the future if need) with the conditions:
3.1. Deactivate factory remote and immobiliser.
3.2. All the factory door locks MUST stay as original, only add in the aftermarket kit and components on top of each lock in each door to get the keyless remote and lock working.
So if you have a D2 with similar issues as I had, there is a great chance that you could get it works after spend an hour cleaning the lock with degreaser and oil (try to open its plastic cover to clean it better).
A happy day!