406 wont stay locked

[dazclan]

Hi, im needing sum advise again, my 2003 406 hdi wont stay locked, as soon as i lock it it unlocks its self again, dosnt matter if i use the key fob or key in the door, dos anyone no what could be wrong, thanks

[jasper5]

One of the door catches will probably be sticking. Maybe due to frost or needs some WD40 spraying inside the locking mechanism on each door.

[jamjar1383]

had the same thing the other day, but when i came out of work it had sorted it's self, seems to be cold related

[Doggy]

....or any of the doors not completely shut / something in the way

[highlander]

You need to ensure all four doors, the bonnet, the boot, and the fuel filler cap are securely closed before you lock the car. As others have said, you need to check the mechanisms on each of these lockable points, and apply WD-40 liberally if any of them feel a bit stiff.

If that doesn't help, I'd get it in to a garage - it's not the sort of thing you just want to leave, in case some wee scrote-bag comes and nicks your motor.

[dazclan]

thanks guys, i had checked to make sure all doors & that wher closed but il give it a spray with wd40 tomorrow, hope thats all it is caus its starting to do my head in it jus seems to be 1 fault after another, iv still not managed to sort the starting problem out yet either so iv gotta either make sure i leave it to cool down or carry easy start in the boot lol,

thanks again Darren

[robb]

Had the same problem in the cold weather last year trusty wd 40 into the lock sorted it .This year its the courtesy lights that dont work until the car is warmed up and my immobiliser buttons have to be pushed hard to register but when the car is warmed up they work perfectly ps my lights on alarm doesnt sound until warmed up

[dazclan]

thanks guys,finaly got it to stay locked, wd40 done the trick,

[FarmerPug]

also i snagged a wire once and it knocked it off, but i remembered that i had done it and got the wire soldered up again.