Doors clicking, possibly trying to unlock constantly?

Fox3 · 20th February 2017, 18:33

A strange fault seems to have occured today, the doors seem to be constantly unlocking themselves, the relay under the glovebox clicks as do the doors, the car won't lock on the fob, or on the very slight chance it does, the alarm goes off after a short period of time.

Can anyone shed any light on this, it's dark now, but I'm thinking water in somewhere? (I gave it a good wash and polish yesterday morning, and haven't been far since...

roverbarmy · 20th February 2017, 18:37

I remember a 25 that had a problem called "machine gunning" and this sounds similar. Try a 25 forum (maybe MG Rover.org) for info?
mike

Fox3 · 20th February 2017, 18:56

Quote:

Originally Posted by roverbarmy

I remember a 25 that had a problem called "machine gunning" and this sounds similar. Try a 25 forum (maybe MG Rover.org) for info?
mike

Cheers Mike, I'll have a look. It's more or a random click to be honest, can be 5 seconds or 30 between clicks.

I've pulled the fuse on the C/L for now. I've got a long drive tomorrow and could do without the hassle of a flat battery!

suzublu · 20th February 2017, 19:11

Time for a plenum check methinks

Fox3 · 20th February 2017, 19:14

Quote:

Originally Posted by suzublu

Time for a plenum check methinks

Urgh, I'm hoping not! I checked and cleaned, but it was a couple of months ago now...

mh007 · 20th February 2017, 19:22

A couple of suggestions:
Make sure the door panels are secure at the top & not making the lock/unlock button stick.
Disconnect the battery for 30-60mins (make sure you have the code for the head unit - unless you have hi-line or aftermarket).

Lord of Hog · 21st February 2017, 06:39

I've had the same issue on my Outlander ever since I got it, so it's not unique to 75s. I've been told that it's down to water getting into the wiring on one of the doors (in my case the tailgate but I'm damned if I can trace it) and fooling the system into thinking there's a door open that needs to be closed. The first time it happens all the doors lock and then after that it just clunks randomly. It certainly seems to be moisture related as it never does it in warm dry weather or when it's cold enough to freeze. I suspect it's not ECU related as the unit in the Mitsubishi is in a much more sensible position than in the 75 and yet the symptoms remain the same.

Fox3 · 21st February 2017, 08:41

That's good to know, and would make sense.

I'll pop the fuse back in and see what happens

20th February 2017, 18:33	#1
Fox3 Avid contributor MG ZT CDTi and MG ZT 190 Join Date: Oct 2016 Location: North Yorkshire Posts: 188 Thanks: 53 Thanked 45 Times in 30 Posts	Doors clicking, possibly trying to unlock constantly? A strange fault seems to have occured today, the doors seem to be constantly unlocking themselves, the relay under the glovebox clicks as do the doors, the car won't lock on the fob, or on the very slight chance it does, the alarm goes off after a short period of time. Can anyone shed any light on this, it's dark now, but I'm thinking water in somewhere? (I gave it a good wash and polish yesterday morning, and haven't been far since... __________________ 2003 ZT+ CDTI

20th February 2017, 18:37	#2
roverbarmy This is my second home Roverless + 1.7D Sportage Join Date: Aug 2014 Location: East Norfolk Posts: 7,050 Thanks: 729 Thanked 2,021 Times in 1,449 Posts	I remember a 25 that had a problem called "machine gunning" and this sounds similar. Try a 25 forum (maybe MG Rover.org) for info? mike __________________ Oil in my veins!

21st February 2017, 06:39	#7
Lord of Hog Gets stuck in Rover 75 2.5 V6 in Wedgwood Blue Join Date: Dec 2015 Location: Felbridge, East Grinstead Posts: 982 Thanks: 250 Thanked 294 Times in 206 Posts	I've had the same issue on my Outlander ever since I got it, so it's not unique to 75s. I've been told that it's down to water getting into the wiring on one of the doors (in my case the tailgate but I'm damned if I can trace it) and fooling the system into thinking there's a door open that needs to be closed. The first time it happens all the doors lock and then after that it just clunks randomly. It certainly seems to be moisture related as it never does it in warm dry weather or when it's cold enough to freeze. I suspect it's not ECU related as the unit in the Mitsubishi is in a much more sensible position than in the 75 and yet the symptoms remain the same. __________________ Conformity is not morality. Consensus is not truth.

21st February 2017, 08:41	#8
Fox3 Avid contributor MG ZT CDTi and MG ZT 190 Join Date: Oct 2016 Location: North Yorkshire Posts: 188 Thanks: 53 Thanked 45 Times in 30 Posts	That's good to know, and would make sense. I'll pop the fuse back in and see what happens __________________ 2003 ZT+ CDTI

20th February 2017, 19:11	#4
suzublu This is my second home rover 75 1.8 vvc club se wedgwood blue Join Date: Aug 2009 Location: Seaton Carew Posts: 26,913 Thanks: 65 Thanked 7,142 Times in 4,642 Posts	Time for a plenum check methinks

20th February 2017, 19:22	#6
mh007 This is my second home MG ZT260 SE, MG ZT190+, MG ZTT 160, R75 Conn SE 2.0, R75 Conn SE 2.5 X 3, R75 Club SE 1.8, P5B Coupe Join Date: Jul 2009 Location: Keynsham, Bristol Posts: 4,211 Thanks: 65 Thanked 635 Times in 499 Posts	A couple of suggestions: Make sure the door panels are secure at the top & not making the lock/unlock button stick. Disconnect the battery for 30-60mins (make sure you have the code for the head unit - unless you have hi-line or aftermarket).