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johnnyd

Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

2008 Defender 90 Puma 2.4 XS CSW Stornoway Grey

Truck failed us in France

After a day of Ferry trips, 4 hour drives and various start stops in France, went to leave our final destination to go back to a Hotel, and guess what, the fault that I had with the vehicle that went away over 2 months ago resurfaced.....turn the key in ignition, turns over 4 times and stops, I have used the truck over here daily in those two months and its been fine. How can I track this down?. Luckily had EU breakdown cover, they trailored it to the hotel, and were coming back the following morning to trailor it to a garage. Got up next morning and it started fine, refused to stop the engine all morning till we got on the ferry incase it wouldn't start again, not much fun for the wife and dog...or me. Is it the immobiliser ? Is it related to the immobiliser ie fuel pump cut off, why does it always turn over exactly 4 times then stop ? The next time I turn the key, nothing, until I set/unset the key fob, can it be the ignition switch not making a set of contacts? the first time it happened here in the UK the only thing that cured it was overnight, so the two factors involved there are time and temperature. Disconnected the battery to reset things, still the same, it wasn't an overly hot day over there, the only thing different I did the time it wouldn't start was lock the car with the fob, then unset it when we wanted to leave. I have done that same operation many times with no issue over here. Can the fob be faulty and only partially unset the immobiliser? How does the fob work, I have heard some stories of other radio frequencies blocking Land Rover fobs?
Any help would be most appreciated, at the moment I am not in love with the truck

It was a very stressful 36 hours having to worry about how to get the family home

Its not battery related, its a new one, its not alternator related, tested it with a ring charger/conditioner

JD 2008 TDCi 2.4 XS CSW

11th Aug 2018 8:48am

johnnyd

Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

I have located the immobiliser, it seems to be a YWC500640

https://www.lrdirect.com/YWC500640-supplie...rover.html

It has a single orange wire not connected to anything coming off one off the connectors, maybe a function that isn't used on the Puma?

I notice it says 433Mhz on it, so can it be interfered with by another source of 433Mhz ? Also does anyone know if the key fobs talk to the immobiliser once the alarm is disarmed ? ie if the key fob is faulty or low batt, can it interfere with the starting of the truck ?

JD 2008 TDCi 2.4 XS CSW

11th Aug 2018 10:18am

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20281

The fob does have to be in the vicinity of the ignition when starting and the alarm and immobiliser has to be disarmed before starting.
Have you tried just pressing unlock before starting?

Turning over, sometimes starting and then shutting down is often the immobiliser if armed and starting is attempted.
There should also be no armed dash light flashing either when you go to start. (Red.)

I'm sure someone will be along shortly that knows more the electronic intricacies to it than I do.
Checking the plug to the rear of the IPAC. (Instrument cluster.) is securecis also an issue that can occasionally occur.
Also that Relays under drivers seat are secure. ⭐️⭐️God Bless the USA 🇬🇧🇺🇸 ⭐️⭐️

11th Aug 2018 10:48am

johnnyd

Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

Hi Steve

yeh tried all that but thanks, it never fires, just exactly 4 turns of the starter I am guessing, then cutout, no firing.

JD 2008 TDCi 2.4 XS CSW

11th Aug 2018 2:21pm

mk1collector

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

I think the orange unconnected wire is the ariel. Ray
My build thread
http://www.defender2.net/forum/topic17615.html

11th Aug 2018 3:04pm

v8bobber

Member Since: 26 Aug 2012
Location: pembrokeshire
Posts: 444

2008 Defender 110 Puma 2.4 DCPU Java Black

I had a similar problem. Go to start, turn over a few times then dead....but locking and unlocking always cured it.

I plugged my nanocom in and turned off the passive immobilisation and that cured it

11th Aug 2018 3:08pm

johnnyd

Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

With regards to the orange wire, yes it is indeed the aerial for the device, A guy I spoke to who repaires these units said the bare wire at the end should be insulated so it can’t touch anything and degrade the reception of the unit, I have now taped over the bare end just in case........mine was bare exposed wire

FYI

JD 2008 TDCi 2.4 XS CSW

15th Aug 2018 4:34pm

Paulv8

Member Since: 09 Jun 2013
Location: Milton Keynes
Posts: 618

1989 Defender 90 V8 Petrol CSW Alpine White

Interesting.... It sounds to me like RF interference or a duff exciter ring. I get a similar issue now I have a X-eng steering lock fitted to mine. If I don't hold the fob in the right place I get either nothing, a turn over for a few times and stop, or sometimes it even fires then dies. V8 90...WIP

15th Aug 2018 4:47pm

johnnyd

Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

What talks to what on the unit, what is the aerial on the 10AS unit picking up, and why have the exiter ring around the ignition as well as, surely the aerial can Pic up both signals?

JD 2008 TDCi 2.4 XS CSW

15th Aug 2018 4:55pm

Paulv8

Member Since: 09 Jun 2013
Location: Milton Keynes
Posts: 618

The exciter ring round the steering is for the immobiliser: It talks to the fob bit of my key set up (a 2013 car with a separate black fob and key).

The AS10 aerial picks up the signal when you press the button on the fob. V8 90...WIP

15th Aug 2018 5:01pm

johnnyd

Member Since: 13 Apr 2013
Location: Chippenham
Posts: 1006

Ok thanks.....makes sense.......would a low batt in the key fob cause an immobiliser confusion, the new batteries I put into both remotes a few months ago seem to measure only 1.6 volts instead of 3, well one certainly does, could 1 low batt remote in the car cause issues with the good fob OOI ?

JD 2008 TDCi 2.4 XS CSW

15th Aug 2018 5:15pm

Paulv8

Member Since: 09 Jun 2013
Location: Milton Keynes
Posts: 618

I don't know the answer to that - sorry. V8 90...WIP

15th Aug 2018 5:22pm

MR_JAMES

Member Since: 10 Oct 2013
Location: ESSEX
Posts: 247

2011 Defender 90 Puma 2.4 XS CSW Stornoway Grey

have you tried / do you have the eka (emergency key access code)? 1953 80"
1987 mini city e
2011 90"

15th Aug 2018 8:28pm

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