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chadjizz

Member Since: 25 Apr 2012
Location: sussex
Posts: 559

2013 Defender 130 Puma 2.2 HCPU Orkney Grey

landy wont start / immobiliser problem? 10AS unit problems

Hi guys

i have searched but couldn't find anything like this...

FYI i have central locking.

this morning at work the landy didn't lock. i didn't think much of it as i was working close.

got in it to go home at 5 and there was no red immobiliser light on entering the vehicle.

turned the ignition let the glow plugs go out and then no start, nothing.

if i turned the key without glow plugs it starts but then cuts straight out within a second or so.

i disconnected the battery, back up alarm came on, so connected back up. the red immobiliser light is now illuminating but still the same results when trying to start. Got the spare key brought out to me and the same situation...

i tried to follow the EKA procedure but as the landy wont lock i cant follow the beginning steps.

i manually locked all of the doors and then the drivers door, then unlocked but no alarm went off like the handbook suggests and now there is no red immobiliser light again. i still contiuned the EKA and tried the full procedure but nothing....

the landy hasn't been in any water and ot hasn't rained recently....

any help would be amazing

thank you

Last edited by chadjizz on 22nd May 2018 6:06pm. Edited 1 time in total

15th May 2018 10:49pm

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

My wife's dc wouldn't start because a fuse had blown due to split wires in one of the second row door b post to door rubber boots. I can't tell you which fuse it was as I wasn't there so Landrover assist came out to sort it for her. So I'd check all the fuses first and if ones gone check your second row doors lock. Ray
My build thread
http://www.defender2.net/forum/topic17615.html

15th May 2018 11:30pm

HardCharger

Member Since: 03 Mar 2013
Location: Manila
Posts: 737

2011 Defender 110 Puma 2.4 SW Stornoway Grey

Has this happened before or is it your first time in the area?

It could be electromagnetic interference preventing the 10AS module from "seeing" the FOB leading to no start situations. You can try pushing the vehicle a few meters then try starting it again it should turn over when you are out of range of the interference. This is my pet peeve issue with the truck. Had to do the push a few meters bit once or twice already.

Now if it's your usual spot and it just went wonky, it could be that the FOB and the 10AS module are out of sync and you'll have to sync them. Are the batteries in the FOB still OK? Is your 10AS module corrosion free?

I hope these help. If Defender theft is not an issue where you are, you can opt to have the immobilizer disabled so you won't encounter this issue again.

16th May 2018 2:30am

chadjizz

Member Since: 25 Apr 2012
Location: sussex
Posts: 559

mk1collector i checked the fuses relating to the alarm system and were fine. The only similar thing to what you mentioned is the electric window(drivers side) only works when the door is closed and not open as there is a lose connection in the rubber protector bit.... been like this for a month now.

HardCharger it is on a clients driveway, i have been working there in the days for the last week or so. Happy to disable it but not sure who could.

thank you for the ideas

16th May 2018 6:43am

mk1collector

Member Since: 17 Sep 2009
Location: West Yorkshire
Posts: 6769

I'd check every single fuse, not just the alarm ones

Ray
My build thread
http://www.defender2.net/forum/topic17615.html

16th May 2018 8:17am

chadjizz

Member Since: 25 Apr 2012
Location: sussex
Posts: 559

Checked them all under the dash and all are fine.

16th May 2018 9:10am

blackwolf

Member Since: 03 Nov 2009
Location: South West England
Posts: 17390

2007 Defender 110 Puma 2.4 DCPU Stornoway Grey

I'd be inclined to sort out the wiring to the driver's door first, since the alarm and immobiliser are linked to the driver's door lock mechanism and you have a known problem with the door harness.

16th May 2018 9:49am

chadjizz

Member Since: 25 Apr 2012
Location: sussex
Posts: 559

its definitely the 10as unit.
due to it being a post 2012 it cant be refurbished and Landrover have stopped making the part.
it seems to be a dealer only fix due to the coding involved with fitting the "alternative" part/system....
they want £1500 minimum apparently

has anyone else suffered this problem in the newer post 2012 2.2 puma's?

22nd May 2018 5:49pm

NickMc

Member Since: 01 Oct 2014
Location: Norn Iron
Posts: 1624

There’s a very easy work around for this problem I’m not posting it on a public forum though

22nd May 2018 9:06pm

matluma

Member Since: 14 Jun 2018
Location: Melbourne
Posts: 3

2009 Defender 130 Puma 2.4 HCPU Corris Grey

Can anyone Pm me and let us know more about this workaround?
I have horrible issues with 10as. dirt roads now shutting the car down/hazzards/door locks..... I considering selling this electrical junk and going back to the 300Tdi I kept around just in case....

Im also having strange starting issues where it seems like the battery is low, I drive for 3Hrs, stop the car and it acts like its dead after 10 mins. wait 10 seconds and it cranks at full gusto like it never had a problem... Earths seem tight, etc.

Mechanical Injection is the future.

Thx Defender People.

14th Jun 2018 12:43pm

X4SKP

Member Since: 29 Nov 2013
Location: Berkshire
Posts: 2295

2010 Defender 90 Puma 2.4 SW Stornoway Grey

Hello chadjizz

You may have already considered this, but I'd say it would be worth talking to Paul Brown
at Technozen before you 'give up' on the AS10...

https://www.technozen-electronics.co.uk/la...-services/

Good Luck SKIP
https://www.defender2.net/forum/topic83242.html

14th Jun 2018 1:17pm

legin

Member Since: 22 Jul 2017
Location: Chelmsford Essex
Posts: 1004

2012 Defender 90 Puma 2.2 HT Santorini Black

chadjizz wrote:
its definitely the 10as unit.
due to it being a post 2012 it cant be refurbished and Landrover have stopped making the part.
it seems to be a dealer only fix due to the coding involved with fitting the "alternative" part/system....
they want £1500 minimum apparently

has anyone else suffered this problem in the newer post 2012 2.2 puma's?

I have and had it fixed by Chris at CSK for a lot less than £1500

14th Jun 2018 3:50pm

zsd-puma

Member Since: 09 Aug 2016
Location: Kent
Posts: 2720

2010 Defender 110 Puma 2.4 USW Santorini Black

if it's still a Lucas/TRW 10AS unit just with new fobs I can't see a reason why you couldn't just replace it with an earlier 10AS unit and fobs. Then program it with one of the many after market tools.

14th Jun 2018 6:30pm

legin

Member Since: 22 Jul 2017
Location: Chelmsford Essex
Posts: 1004

zsd-puma your on the right track Chris used a td5 10AS unit and but their is a wiring loom difference and it becomes a dash out and hack in to the puma loom job .

14th Jun 2018 8:16pm

Martin
Site Admin

Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6605

2015 Defender 90 Puma 2.2 XS CSW Montalcino Red

Or instead of hacking stuff - an adapter loom perhaps?

1988 90 Td5 NAS soft top

2015 D90 XS SW

14th Jun 2018 8:19pm

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