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X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 2287

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey
Hello All

Just tidying up an old thread to conclude my fix

100% culprit LR039638 Land Rover Ignition Switch...10...20...30 starts OK... then fail.

Replaced with new...



https://www.lrdirect.com/LR039638-supplied...LUCAS.html

5 Months in (around 200+ Starts) and Zero reaccurance of probelm... Very Happy SKIP
https://www.defender2.net/forum/topic83242.html
Post #693548 15th Mar 2018 5:26pm
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justinp



Member Since: 24 Jun 2016
Location: Cambridge
Posts: 167

United Kingdom 
Thanks for the update, my Defender exhibits a similar problem every now and then. Thankfully each time it’s occurred it’s started on the second or third attempt.

It’s been in to Land Rover and they could not reproduce the problem and there we no fault codes stored in the ecu either.

I strongly suspect it’s the ignition switch, as removing and reinserting the connectors on the back of it left it trouble free for months. It now occurs rarely, but I’ve no doubt it will come straight back just as soon as the approved used Land Rover warranty runs out. Now gone - 2012 2.2 110 DC XS
Post #693638 15th Mar 2018 10:32pm
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X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 2287

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey
Hello justinp

I really wanted my Defender to break and stay broke...as I felt at least then I could probably identify the problem.

I chased this and spent money where it wasn't needed, but just decided to view this as part of the deal when
living with a Defender...My wife has just perfected that sidways glance as I work on to fix the current issue... Neutral

Not a straight forward job on a Puma and if you have fitted a X-Defend Steering Lock there is another
(not insignificant) obstical in your way...
https://foundry4x4.co.uk/index.php?route=p...duct_id=74

Ignition Switch
Anyway for the money (peace of mind) it's worth swapping out i'd say to know that this part is not your problem
and if it makes no difference then carry the original as a spare

My fix is here...
http://www.defender2.net/forum/topic56773....p;start=45

Good Luck SKIP
https://www.defender2.net/forum/topic83242.html
Post #693642 15th Mar 2018 10:55pm
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patclan



Member Since: 13 May 2010
Location: Gold Coast
Posts: 20

Australia 2010 Defender 110 Puma 2.4 SW Santorini Black
Glad I found this thread, I have the exact same problem, some times it will run for days without an issue, others it will take 3 goes to start, then there are times it just wont start. Never been overly concerned and figured I would get to it until the other day, 10pm at night we got a bushfire alert to leave now, threw the dog and the kids in the car and it wouldn't start and it had been fine all week, fortunatley we just changed cars, but it made me realise it can't go on. I was about to get the starter motor stripped and buy a new battery, this is definitley worth doing first.

Thanks for coming back with the fix.
Patrick
Post #793728 18th Sep 2019 6:34am
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X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 2287

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey
Hello patclan

Good luck with your fix... a closing in bush fire adds a whole additional level of motivation to solve this Shocked

I'm coming up to two years since swapping over the Lucus Ignition Switch and no re-occurrence of the problem
so for a $60 AUD job (if DIY) and with apparently similar/identical characteristics i'd start with this.

I ordered and carry a spare now...but really wouldn't want to fix this out in the 'field'.

Interestingly (well for us anyway)... I was looking over a 2.4 110 Puma being expedition prepared at a local specialist
it has been stripped almost right back and a serious amount of work was being undertaken... the electrical side of things
included upgrading a lot of standard OEM bits...essentially 'Lucus out Bosch in' all of which had been specified with a high IP rating.

Let us know our outcome... Thumbs Up SKIP
https://www.defender2.net/forum/topic83242.html
Post #793762 18th Sep 2019 10:50am
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patclan



Member Since: 13 May 2010
Location: Gold Coast
Posts: 20

Australia 2010 Defender 110 Puma 2.4 SW Santorini Black
Well that was a pain to change, lucky I dont have hands the size of my dad or I would never have gotten that little screw out from the otherside of the barrel! And lucky I could untighten it with just a philips driver bit in my hand, no space for a screwdriver.

Anyway all the luck aside once again I am so glad I found this thread, the car wouldn't start, changed the ignition switch and it has started every attempt for the last 10 goes, I am hoping that it is permenant and I have a good feeling about it.
So thank you so much for following up with the fix, I read so many posts on other forums that just ended with no solution, so thanks for sharing.
Patrick
Post #794789 23rd Sep 2019 11:11pm
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X4SKP



Member Since: 29 Nov 2013
Location: Berkshire
Posts: 2287

United Kingdom 2010 Defender 90 Puma 2.4 SW Stornoway Grey
Good to hear patclan Thumbs Up

... let's hope you've fix it. SKIP
https://www.defender2.net/forum/topic83242.html
Post #794976 25th Sep 2019 8:15am
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KelvinB



Member Since: 17 May 2018
Location: Crickhowell
Posts: 24

Wales 2008 Defender 110 Puma 2.4 CSW Stornoway Grey
custom90steve wrote:
It'll also arm if you unlock it, leave it unlocked open the doors or give it 5mmins.
Occasionally I have to press unlock before starting just to disarm it.


This happens with one of my key fobs intermittently, but starts 100% of the time with the other fob.

It mainly happened when I put fuel in and didn't lock it. Come back, jump in and the immobiliser kicks in, Had to shut the doors and lock it, unlock it and then it starts ok. I just dont use this fob anymore as the other one doesn't do this.

Maybe try another fob, or get it re-programmed.
Post #795097 25th Sep 2019 7:35pm
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pumaguzzler555



Member Since: 20 Jun 2022
Location: KwaZulu-Natal
Posts: 5

South Africa 
Nice to hear the ignition on these is culprit for most start/ignition issues, and also the IPC/CLUSTER is notorious for Immobilizer issues as well
Post #956059 20th Jun 2022 10:13pm
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