The car is almost at the end of its life so a quick bodge will suffice.
When trying to lock the car all the locks come up again. When the
ignition is on, the red warning light indicating that something is still
open comes on. I've double-checked and slammed everything but no luck.
Is it possible to remove a fuse and revert to manual locking?
Any other ideas?
Could try a liberal dosing of WD40 throught the moving door catch
mechanics. Sometimes the latch/pawl does not return fully home and this
causes the solenoid to signal a problem.
If this doesn't work then it is an interior door panel off job so one
can actually access the door lock internal linkages to lubricate and
check for correct operation. After that one is down to looking for
broken wires in the door jam areas. Common problem on older cars as the
wires eventually fatigue and fracture due to all the flexing with door
opening and closing. Start looking on the drivers door as this is most
likely to be the culprit. You can also disconnect the solenoid
connectors to revert to 'manual' mode on a door by door basis.
As for disconnecting the whole central locking it can be done but I
don't know the location and wiring of the central locking ECU for your
Thanks for for all the info but talking about it coming to the end of
its life seems to have scared the car into behaving itself again -
although I had to take it to the tip (en route to Tesco) to finally
If it happens again I'll do what you suggest.
Hopefully a long lived success! I hate it when one is finally driven to
spending time and effort into investigating a problem only to have the
problem disappear before one is able to apply the long lived and sought
Had exact same problem on my old marea, Its an eay fix - just take the
bulb out of the boot light.
On these mk 2 mareas and brava/os post 2000 ish, theres a safety feature
on the central locking preventing the doors from locking if any of them
are open. Detection is through the interior light circuits.
Any load on the courtesy light cuircuits and the central locking will
pop open all your locks within a second of you turning the key to lock
There are TWO seperate courtesy light circuits, one for the 4 passenger
doors and one for the boot light. If your interior courtesy lights are
working properly the fault must be with the boot light.
It's a simple enough task to trace the wiring from the microswitch on
the boot lock stricker to the boot lamp and check for damage. Although
the bulb holder is a poorly designed thing without any shrouding around
the contacts and is probably the culprit. If the live feed shorts the
fuse blows, no boot lamp no problem but if the return wire shorts it
will place a load on the circuit and confuse the central locking to
thinking the boot is open.
It's even more confusing because the boot lamp itself goes out
automaticaly after 10 minutes or so so there's way you can just look
through the rear seats and check if the light is on. don't ask me ask
If a problem can't be found and rectified, the simple answer is to
remove the bulb from the boot lamp. Without a bulb there won't be a load
and without a load the doors will lock. Simple.
Motorsforum.com is a website by car enthusiasts for car enthusiasts. It is not affiliated with any of the car or spare part manufacturers or car dealers discussed here.
All logos and trade names are the property of their respective owners.