2004 ST-S GUIV ZD30 Aftermarket keyless Entry

[Mark-o]

Hi guys, I purchased a second hand patrol that came with aftermarket Mongoose keyless entry and it wasn’t working properly. I replaced batteries on both remotes and it wouldn’t pick up  a signal unless the remote was  within 10cm. So I decided to purchase another unit off eBay  and connected it to the vehicle. It picks the signal perfectly BUT does not lock/unlock the car? The unit itself clicks when pressing buttons and the flasher lights working fine. Central locking is working fine when locking/ unlocking driver door manual. I have connected the White/black wire on the unit to the Blue/red wire, and the White wire with blue wire on the car. I know the central locking was working fine with the older unit but the signal was horrible. Does anyone have advice on how this could be fixed?

[Rumcajs]

I've replaced factory wireless receiver for keyless entry for exactly same reason with Jaycar kit, it worked right away.

I followed a thread on patrol4x4.com forum and added my 2 cents worth to the discussion ==> https://www.patrol4x4.com/posts/6963332/

B/R

[Mark-o]

Thanks mate much appreciated!!!! I wired the wiring exactly how you have mentioned in the post BUT still not locking/unlocking. im scratching my head as im out of ideas :(

[Rumcajs]

Just re-check that wiring is connected correctly... wiring diagram bellow. Bonus with aftermarket unit is that unlike factory unit there is no checking for doors properly closed which commonly an issue especially with rear door not closing properly with barn door sagging a little. Other then that it makes no sense why the Ebay unit doesn't work unless the signals are reversed....

Edited November 16, 2024 by Rumcajs

[Mark-o]

mate honestly im puzzled right now! all wirings are exactly matching where they should be and still nothing. I might purchase a jaycar unit LR-8839 and see if that should solve the mystry.

[Mark-o]

 

1 minute ago, Mark-o said:

23 hours ago, Mark-o said:

 

 

On 11/16/2024 at 8:35 PM, Rumcajs said:

Just re-check that wiring is connected correctly... wiring diagram bellow. Bonus with aftermarket unit is that unlike factory unit there is no checking for doors properly closed which commonly an issue especially with rear door not closing properly with barn door sagging a little. Other then that it makes no sense why the Ebay unit doesn't work unless the signals are reversed....

 

Hey mate so today purchased LR-8839 / 386M off Jaycar and installed it and exactly same thing happened with ebay unit LB-408. Which is there is power to the unit but it doesn't lock/unlock the doors. I thought to myself hmmm maybe i fried the central locking module in the car?  So decided to install the unit the came with the car which i found out about an extensive research it was Mongoose MCL2000 with 2 button keys MRC200W, anyways long story short the old unit works BUT it doesn't pick the signal unless the key right next to it or within 10CM radius checked the antenna wire and it seems to be fine nothing odd about it, so i though i would just add another wire where the soldering  exposed to see if the wire is short from inside and nothing has changed. Now i have 3 dud units if anyone reads this post and have had same experience please share you solution as im banging my head as im typing this... TIA

Edited November 17, 2024 by Mark-o

[Rumcajs]

On 11/17/2024 at 9:54 PM, Mark-o said:

I thought to myself hmmm maybe i fried the central locking module in the car? 

Mate, I don't think so as if it works via drivers door buttons.... You need to understand how the system works...

Did you read that thread I posted a link to?  It explains how the system works. Basically the remote unit just interfaces with/via drivers door control and remote relay. Did you actually pair the remotes as in supplied instructions?  If drivers door controls work then its only issue is the remote receiver.

As with any Remote control you're required to pair the fobs before they will work!

[Mark-o]

13 hours ago, Rumcajs said:

Mate, I don't think so as if it works via drivers door buttons.... You need to understand how the system works...

Did you read that thread I posted a link to?  It explains how the system works. Basically the remote unit just interfaces with/via drivers door control and remote relay. Did you actually pair the remotes as in supplied instructions?  If drivers door controls work then its only issue is the remote receiver.

As with any Remote control you're required to pair the fobs before they will work!

Hey mate thaks for your patience and replys... im a newbie to this nissan crap remote dilemma. anyways so I hooked the unit i have purchased off ebay and sat in the car and tried to lock all doors from the main switch on the drivers arm rest i have realised that all doors lock/unlock EXCEPT the drivers door? I googled it quick and apparently its a factory setting? and when i lock/unlock the driver door manually all doors lock/unlock and hazards flashes so i did just that and i inserted the key in and out for 6 times the hazards didnt flash... so i tried multible times slowly and fast and nothing happens, i watched another video on youtube this bloke was a preforming programming on patrols 2003-2009 and the precodure was insert the key in turn ignition on NO cranks for 6 times then wait until the hazards flashed and turn to position 2 and then press and hold unlock button and press lock button 3 times till light flashes .... I did all that and still no luck ;(.

[Rumcajs]

OK so it appears that the actual factory central locking is still working as it should. if you use drivers side locking part on the handle that should also operate all door lock.

The aftermarket wireless or RC unit doesn't need the factory procedure it should have its own, some have programming button on the unit which needs to be pressed/held for so long etc. This should be in the instructions included with those aftermarket units on how to pair set of fobs included. 

Remember how this Nissan central locking works:

Wireless/key less/remote interfaces with the drivers side door lock unit to operate locks on all doors including drivers. The factory unit includes also wiring to all door sensors to confirm that doors are closed.

Aftermarket units don't need that crap indeed it is hindrance especially in case of rear barn door!  Thats why aftermarket units only need six wires as we don't need to make checks if the doors are actually closed, that just Japs stupid overzealous checking in case you leave keys in the vehicle etc...

First question: is Mongoose unit working? (even with remote right next to it) if it is then try to obtain information how it is wired up or wiring arrangement for it. How many wires are connected?

 

Second question: have you paired Ebay unit fobs with the Ebay unit? Use intructions/info how to provided with the unit, don't use Nissan OEM instructions it will not work!

 

Third question: if you connected Jaycar unit as per instructions, did you pair the fobs as per included instructions?

This is the one I have and it works brilliantly ==> https://www.jaycar.com.au/remote-controlled-car-central-locking-system-with-2-keyfob/p/LR8839

The unit has learning button which needs to be pressed/held for 1 sec then pressing lock on each transmitter(fob) will pair them.

Did you do that?

Green and Blue wires are the only one needed....to lock unlock on this unit! Essentially if not concerned about indicators its just 4 wires.

Positive, Negative, Lock, Unlock,  and 2x Indicators

I removed glovebox on my car ST 2004, to check/confirm my wiring setup:

LR8839 side          Nissan side

Red                         Red/White     B+ 12V  (It means constant battery power)

Black                      Black              B- Ground/Earth

Blue                       Blue/Red        

Green                    Blue                

optional indicators:

Brown                  Green/Red

Brown                  Green/Yellow

According to my original post on other forum I might have swapped above Lock and Unlock wires so above list is working correctly.

I have cut those 6 wires on original Nissan plug off....

Then used 8 pin white plastic connector kit from Jaycar ==> https://www.jaycar.com.au/automotive-8-way-plug-socket-250-series/p/PP2069 

to make it nicer to connect to aftermarket unit existing harness ( I hate soldering wires) of which I had to cut a lot of length off! I only needed 0.5 m of those 6 wires. Rest I taped up away.

Cheers

 

LR8839_manualMain_76676.pdf

[Mark-o]

Hey mate, I REALLY REALLY APPRECIATE YOUR HELP! GOT IT DONE! THANK YOU! ended up installing the LR-8839 

Edited November 21, 2024 by Mark-o
SOLVED

[Rumcajs]

Good stuff, glad to be of assistance.

Regards