GU Patrol door lock remote

Submitted: Wednesday, Oct 02, 2013 at 14:29
ThreadID: 104563 Views:3160 Replies:6 FollowUps:4
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G'day all,
I need some advice. The car is a Nissan Patrol wagon 2012.
The remote will un-lock the doors but will not lock the doors.
The key works fine for locking, un-locking the doors.
What could be causing this and what is the fix.

Thanks in advance, Cheers Pete.
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Reply By: Homebrewer - Wednesday, Oct 02, 2013 at 17:46

Wednesday, Oct 02, 2013 at 17:46
Ooops I made a typo, the car is a 2002 model.

Pete.
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Follow Up By: Member - Bentaxle - Wednesday, Oct 02, 2013 at 18:02

Wednesday, Oct 02, 2013 at 18:02
Could be the remote units battery, change it and see what happens, most battery kiosks in shopping centres have a replacement.
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Reply By: Robin Miller - Wednesday, Oct 02, 2013 at 18:32

Wednesday, Oct 02, 2013 at 18:32
The key has 2 buttons Pete - maybe the lock one has jammed from dirt etc.

You can open up the case one philips head screw - you may then be able to clean contacts or clear any dust that may prevent the button from making contact when depressed.
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Follow Up By: Robin Miller - Wednesday, Oct 02, 2013 at 18:43

Wednesday, Oct 02, 2013 at 18:43
Ok on it really being a 2002 model.

That key is a little different but same principle - also the 2002 ones have much less range , so first check that it won't work with the key held very near the radio.
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Reply By: Michael ( Moss Vale NSW) - Wednesday, Oct 02, 2013 at 20:58

Wednesday, Oct 02, 2013 at 20:58
My 2003 GU fob gets cranky when the battery gets only a few months of use so a new battery is a good start. Some other GU owners say that the circuit board around the buttons crack and break the fine copper foil on the board with the constant pushing with every day use! Michael
Patrol 4.2TDi 2003

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Reply By: rooooboy - Thursday, Oct 03, 2013 at 06:07

Thursday, Oct 03, 2013 at 06:07
Mine had exactly the same issue, but a 2005 model. Just open it up, you will probably find the solder had broken away for the button. Just dab a bit of solder on there with a iron, and should work again.

Apparently it was a fairly common problem earlier in the piece.
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Follow Up By: Homebrewer - Thursday, Oct 03, 2013 at 10:24

Thursday, Oct 03, 2013 at 10:24
Thanks roooboy,
You were right on the money.
I pulled it apart but could not see any broken solder, wriggled the buttons around a bit and put it back together and hey presto it's working again.
Thanks again Cheers Pete.
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Follow Up By: Shaker - Friday, Oct 04, 2013 at 14:02

Friday, Oct 04, 2013 at 14:02
When you pull it apart there is usually a silicone pad with the buttons moulded in to it, if you clean under the pad & the carbon contacts on the fob with iso propyl-acohol it should fix it for a long time.
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Reply By: Member - Michael H25 - Friday, Oct 04, 2013 at 13:46

Friday, Oct 04, 2013 at 13:46
Glad you corrected the year as I would have suggested you make a warranty claim. As I have a 2012 GU.

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Reply By: Member - Bentaxle - Friday, Oct 04, 2013 at 17:36

Friday, Oct 04, 2013 at 17:36
Pete I have just discovered another reason that the remote has stopped working. When you remove the back cover and expose the printed circuit board, carefully remove it from the unit and then separate it from the rubber boot and you will find that there is a build up of moisture, condensation?, in the boot and the rear of the circuit board is wet. This problem has been found on three remotes and is possibly causing the battery to short and fail.
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