The 75 and ZT Owners Club Forums - View Single Post - Door locks - designed with future failure built-in?

-Joe · 13th October 2011, 01:15

I stripped down the drivers door and removed the door lock. It was not easy.

I noticed how the lock has 2 motors. the lower motor is activated by the internal switch. The top one by the key fob.

My drivers door lock always (99%) works with the interior button so the lower motor is more reliable than the top one.

I lubed the whole lock with lots of oil and it worked fine... for a week or so.

Has anyone atempted to strip down the lock itself. I decided not to at the time, in case i broke it completetly. These locks are very poorly made, maybe designed to fail, like the clutch slave cylinder.

The fault I have and many others experiance to with these Bosch locks is due to mechanical wear. The electric motors still work. Has anyone pinpointed the exact cause inside the unit of the anoying problem.

My rear drivers side door is also dodgey. I think it may well be possible to repair these locks.

I have no money, so can't afford just to buy a replacement, but I have plenty of free time to tinker.

13th October 2011, 01:15	#1
-Joe Avid contributor Rover 75 Classic SE 1.8T Join Date: Dec 2008 Location: wink Posts: 135 Thanks: 0 Thanked 20 Times in 15 Posts	Door locks - designed with future failure built-in? I stripped down the drivers door and removed the door lock. It was not easy. I noticed how the lock has 2 motors. the lower motor is activated by the internal switch. The top one by the key fob. My drivers door lock always (99%) works with the interior button so the lower motor is more reliable than the top one. I lubed the whole lock with lots of oil and it worked fine... for a week or so. Has anyone atempted to strip down the lock itself. I decided not to at the time, in case i broke it completetly. These locks are very poorly made, maybe designed to fail, like the clutch slave cylinder. The fault I have and many others experiance to with these Bosch locks is due to mechanical wear. The electric motors still work. Has anyone pinpointed the exact cause inside the unit of the anoying problem. My rear drivers side door is also dodgey. I think it may well be possible to repair these locks. I have no money, so can't afford just to buy a replacement, but I have plenty of free time to tinker.