keyless entry and start not working on one key despite changing battery

ICE, Equipment, Options
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tikigod19_2000
Posts: 17
Joined: Thu Jan 31, 2019 3:59 pm
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

keyless entry and start not working on one key despite changing battery

Post by tikigod19_2000 » Thu Feb 07, 2019 9:39 am

hi ive noticed that one of my two keys constantly fails to allow keyless entry and keyless start (unless i touch it on the ignition button first in which case it works fine) I've changed the battery several times and it works once or twice and then goes back to being useless!

Anyone have any idea what might be wrong?


Bob d
Posts: 86
Joined: Tue Jun 21, 2016 10:02 am
Location: Not as far south as the Isle of Wight

Re: keyless entry and start not working on one key despite changing battery

Post by Bob d » Fri Feb 08, 2019 1:05 pm

I had a similar problem with one of my keys. It was unreliable in proximity use but usually the lock/unlock buttons worked because pressing them improved the battery connection.
Use some no-residue electrical contact cleaner and gently clean the gold contact patch on the PCB, just along side the words "DO NOT TOUCH" (!), as well as the set of battery contact claws on the PCB and also the other set on the battery holder side and the battery contact itself in the holder. Also gently bend up the contacts on both sides to increase the contact pressure slightly. Before and after installing the battery give it a wipe over with contact cleaner to remove any grease.
J11 QQ N-Tec+ 1.5 DCi Magnetic Red


tikigod19_2000
Posts: 17
Joined: Thu Jan 31, 2019 3:59 pm
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Re: keyless entry and start not working on one key despite changing battery

Post by tikigod19_2000 » Sat Feb 09, 2019 8:59 am

thanks so much. Will give that a try. Funnily enough when I replaced the battery once I did bend up the contacts and had a slightly longer period where the proximity detection was ok. Thanks again!


Bob d
Posts: 86
Joined: Tue Jun 21, 2016 10:02 am
Location: Not as far south as the Isle of Wight

Re: keyless entry and start not working on one key despite changing battery

Post by Bob d » Sat Feb 09, 2019 4:09 pm

Good luck, and the elephant in the room is to make sure the replacement battery is fresh!
J11 QQ N-Tec+ 1.5 DCi Magnetic Red


tikigod19_2000
Posts: 17
Joined: Thu Jan 31, 2019 3:59 pm
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Re: keyless entry and start not working on one key despite changing battery

Post by tikigod19_2000 » Fri Feb 15, 2019 9:13 am

seems to have done the job! Fingers crossed it lasts!

Thank you!


Bob d
Posts: 86
Joined: Tue Jun 21, 2016 10:02 am
Location: Not as far south as the Isle of Wight

Re: keyless entry and start not working on one key despite changing battery

Post by Bob d » Fri Feb 15, 2019 10:14 am

Pleased it did the job, I sorted mine out a few weeks ago and it's still fine.....so far! :? :D
J11 QQ N-Tec+ 1.5 DCi Magnetic Red


tikigod19_2000
Posts: 17
Joined: Thu Jan 31, 2019 3:59 pm
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Re: keyless entry and start not working on one key despite changing battery

Post by tikigod19_2000 » Mon Feb 25, 2019 8:12 am

sadly the fix hasn't lasted.. back to its old tricks. Anyone have any other suggestions?


Bob d
Posts: 86
Joined: Tue Jun 21, 2016 10:02 am
Location: Not as far south as the Isle of Wight

Re: keyless entry and start not working on one key despite changing battery

Post by Bob d » Mon Feb 25, 2019 9:52 am

Hmm, mine started playing up again a day or so ago, and I found that a sharp knock restored functionality, so at best it looks like it could be a faulty solder joint or at worst a faulty component. I'll have to get the big magnifying glass out now :(
J11 QQ N-Tec+ 1.5 DCi Magnetic Red


tikigod19_2000
Posts: 17
Joined: Thu Jan 31, 2019 3:59 pm
Qashqai Model: Mk.2 Qashqai - J11 (2013–2017)

Re: keyless entry and start not working on one key despite changing battery

Post by tikigod19_2000 » Mon Apr 08, 2019 8:12 am

anyone know how much a new key is likely to set me back? That's not going to be cheap is it...


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