hi. I am a new member and this is my first post. I am desperately looking for help as I am not very savvy with cars.


right first things first, I drove my seicento a couple of days ago with no problems, I tried to get back in the car half hour later when it wouldn't turn over and the key CODE symbol was appearing but slickering slightly. a box on the right hand side under the bonnet was rattling. to cut a long story short I had someone looking at it and he checked the battery and it was low, we charged the battery for a while and then the car started with no warning lights. we disconnected all cables from charging it and turned the engine off. the car started again a few times with no problems or warning lights. I left the battery charging for an hour or so then started the car fine and drove a 20 minute journey home. I figured it was the low battery that was causing the immobiliser to kick in. the next morning I had the same problem, CODEkey symbol appearing, car wasn't attempting to turn over. I got it to the garage where we found a snapped earth cable. reconnected this, the car was turning over but not firing, we tried a new crank sensor but no joy. now the CODE symbol stays on at all times while the ignition is on. I don't have the master key to override the system nor do I have the 5digit code to insert.


sorry for the long essay but I felt I had to give u all info I had, and hope for some good advice?


thankyou in advance

we had the same problem with the punto but it wasnt just the key that came up it was the engine light. new sensor left rite and center never help but once that light came of if you turned the car off or stalled it it wasnt starting again, had to be placed on the car spport machine in the garage and reset did thes 5 6 times then traded it in the garage for a new car. it whent to 3 garages and no 1 could undersand it they all said new ecu £1,000 was only woth 500 tops . but to our amsament we seen it over 300 miles away form were we had sold it on the motor way so there is hope for you but as to a fix i have no idea nither did the few garages all the best

hi chanty can garage not sort this for you as it sounds like you may have charged the battery with a charger and still on car?and caused damage to the ecu

If you have a key with "code 2" on it, you won't have a master key, only 2 (or there should be two!) ordinary keys.

My money is on an issue with the code box, rather than the ECU itself.

But please post in the Cinquecento/Seicento section: you'll get more replies, and they'll tend to be better focussed.

I'll ask a moderator to move this post.

Would help if we knew which Seicento it was -- year, engine, etc.

long thread in "security"..
Charlie