Knowl­edge is the key

Car Mechanics (UK) - - Help! -

I’m hav­ing a prob­lem with the cen­tral lock­ing on my 2002 Ford Fo­cus 1.6 petrol. It all works fine, ex­cept when try­ing to un­lock the driver’s door with the key, rather than press­ing the un­lock but­ton on the re­mote. Does the key ac­tu­ally move the lock mech­a­nism me­chan­i­cally or does it op­er­ate a switch that ac­ti­vates the lock mo­tor?

Also, what pre­vents the win­dow mo­tors from burn­ing out if the up or down but­tons are held for a long pe­riod of time, say by a child? Steve Forsyth Changes to the Fo­cus door lock­ing and un­lock­ing mech­a­nism were made from Aug 2001, then again in Oc­to­ber 2003. Your ve­hi­cle should be fit­ted with a me­chan­i­cal rod be­tween the door lock bar­rel and the lock mech­a­nism on both the driver and pas­sen­ger front doors; later mod­els were fit­ted with a me­chan­i­cal rod on the driver’s side only. As the sys­tem works when lock­ing and un­lock­ing with the re­mote fob, the most likely cause of the fail­ure is a dis­con­nected rod be­tween the key and lock mech­a­nism.

The win­dow sys­tems in­cor­po­rate an anti-trap func­tion that pre­vents the con­tin­ual op­er­a­tion of the mo­tor, stop­ping the mo­tor from draw­ing a cur­rent that would, in other cir­cum­stances, cause the mo­tor or switch to burn out. How­ever, this sys­tem is not fool­proof and I wouldn’t en­cour­age test­ing it in this way.

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