my central locking on my mg zr is making a buzzing and grinding noise on the front passenger door when i lock the car any ideas ?

alex whitten, October 2008

Hi Alex, my ZR had the same common design fault. There is a small plastic lug inside the locking actuator which breaks. I carefully took mine apart and replaced this lug by drilling a matching hole in the casing and using a small nut & bolt to replace the lug. New actuators are over £100 and used ones could still fail whereas my mod is still going strong.
I hope this helps. Adrian

Adrian, December 2008