Punto's central locking failed within a day of fixing ac relay problem. I felt happy and thought I will have a trouble free run after I changed ac relay. Yesterday morning I happily drove to a place with ac at fulll blast and parked the car in sun for 3 hours. I came back and headed back home. Everything was looking fine until the car picked up speed and the automatic locking system kicked in. "dag" it locked the doors and ... "dig" it unlocked immediately. I thought some door is not closed properly. But no indication of that on the MID. I got down from the car and checked all doors. All doors are shut properly. What is the problem?! I tried pushing the door release latch down to manually lock the car. Locking works fine in both the rear doors. I tried the co-driver side - it did "dag...dig". At least co-driver side lock is in working condition. It tries to lock but the central locking system unlocks it immediately. I tried the driver side door latch - no, it does not go. It is stuck like some locking mechanism is jammed. Now I am left with the car which does not lock - neither when running nor when parked. Wherever I go I will have to hire a watchman to guard the car. Not locking the doors when in running is a dangerous situation. Car is running very well, but unusable! Now I strongly believe Fiat cars are intelligent - they know when the warranty and extended warrnty end. Parts start dying one by one soon after warranty ends. I have 2 options now: (a) replace the jammed locking mechanism. (b) repair it if I can. Being 200 kms away from nearest service station (which has lazy fellows who don't want to even lookup a part price on the computer) leaves me with only one option of DIY as much as I can. I like DIY - from carpentry to computer, everything is DIY as much as possible. One of the reasons for buying Fiat was the DIY friendliness of Fiat because of very helpful Fiat forums. So I decided to try my hand at repairing the door locking mechanism. I was able to take the locking mechanism out, figure out what is wrong, fix it and put it back. Now it seems to work normally. But I believe its "peace of mind index" is very low now. I will have to change it for better peace of mind. Now I will ask one of my friends in a city like Bangalore to buy the replacement part and ship it. But I believe Punto Emotion Pack's door locking mechanism is pretty expensive because of the electricals included in it. What follows in the next part will be some pictures to show how to take the door locking mechanism out. Sorry, I could not take pictures of mechanism in open condition because I was so busy thinking what is wrong and how to fix the mechanism; taking pictures was the last thing in my mind. But only thing I can tell is - with some basic tools and some mechanical engineering skills any one can do it himself/herself (oh yes, gender equality; don't ask me how many ladies will be interested in getting their hands dirty with grease and oil!).