Audi A 4 B6 - Jammed boot lock

Honest John Back Room » Technical matters
View Threaded
Wed 26 Apr 2017 09:15
Audi A 4 B6 - Jammed boot lock - Steveieb
My boot lock works fine until the sun warms the rear of the car when it will try to unlock but will not
Free.
The manual lock is seized too and all attempts to free it with WD have failed.
Can't use the car for holidays until I get it fixed .
Can you help please.s
Reply | Report as offensive | Link
Wed 26 Apr 2017 13:53
Audi A 4 B6 - Jammed boot lock - elekie&a/c doctor

I think you will need to remove the inner boot lid card and find out which part is jammed up.If I recall,it is part electric and part cable operated.

Reply | Report as offensive | Link
Wed 26 Apr 2017 20:34
Audi A 4 B6 - Jammed boot lock - Steveieb
Thanks Eleciedoc once more , the strange thing about it is that it's fine when it's cold and plays up when the sun shines on the boot.
But all attempts to free the manual lock have failed the barrel seems welded to the surround.
Reply | Report as offensive | Link
Fri 28 Apr 2017 15:35
Audi A 4 B6 - Jammed boot lock - Steveieb

The key overide that manually opens the boot when the electric latch fails is rusted into the surround. Tried WD without success. Any idea how i can free the barrel?

Reply | Report as offensive | Link
Fri 28 Apr 2017 18:08
Audi A 4 B6 - Jammed boot lock - elekie&a/c doctor

Next step would be to remove the complete lock/actuator assy and let it soak in some rust penetrating oil.If all else fails,get yourself a working second hand boot lock unit with a key.

Reply | Report as offensive | Link
Fri 28 Apr 2017 21:12
Audi A 4 B6 - Jammed boot lock - Steveieb
Thanks Eleciedoc , as usual brilliant advice.
I bought a used lock mechanism on its own before reading your post and realising the hesitance could be down to the actuator.
And I have been unable to find a replacement lock assembly probably because the key is specific to the car.
Grateful for your advice on how to proceed or do I revert to your earlier recommendation to soak the whole assembly .
Essentially the lock will work first time when the weather is cool, or the sun is not on the boot
Reply | Report as offensive | Link