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Old 10-17-2011, 06:48 PM   #1 (permalink)
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Question Engine Immobilized - not recognizing key fob?

Hi all - New owner of a pre-owned 2006 LR3 SE here:



love the car so far except - one hugely annoying problem!!!!!

The LR3 will get itself immobilized and refuse to start - it turns over, catches for a split second and then dies. I have to get out of the car, lock it and stand around for a few minutes then unlock it (from the fob) get in an immediately start it... then its OK.

It gets immobilized if I walk back to the car and either (a) click the unlock button a few times - which is how it originally happened last week or (b) it seems to happen every time I walk back, click unlock on the fob and open the rear hatch to load groceries, or whatever - then I can guarantee it wont start.

Sometimes when I put the key in it says something like "key detected" and other times not.

When its in this immobilized mode and refusing to start - if I get out and click LOCK on the keyfob the alarm sounds a short PEEP sound... I wait 10 minutes, click UNLOCK and it will normally start first time.

Very frustrating....

Is this a Landrover feature?
If so -= Can I turn this off?
Or am I going mad?

Any help would be greatly appreciated....

Cheers,
Boris the Landrover is born again | [user]
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Old 10-17-2011, 10:14 PM   #2 (permalink)
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Default It's a really nice picture but ...

I will get to the key in a moment but ... the bonnet is the largest single piece aluminum pressing the world has yet seen, (well in 2005 anyway), and is priced that way. Land Rover was very proud to announce that, the size, not the price I gather, but was never certain. Also, if you have the heated electric windscreen, well again... and if you have the all glass rear roof, make certain that the kids know it is not something to bounce balls off of.

As to the key, in short I do not known, however I think you should be looking at purchasing a second key while you still have access to your 3 and that it starts. It takes about a month for a new key to show up from the Mother Country. There is only one place in the world that can routinely duplicate the electronic coding and that is Solihull, and even they have trouble about once a year.

The two links below will be of interest but not much help. Your key fob consists of two circuits, one operated by the battery that locks and unlocks the doors and the second circuit that does not use battery power but allows starting of the engine, (or not). What I am saying is that a key fob battery problem has nothing to do with a "will not allow engine to start" concern.

Basically a circuit within or near the steering wheel cylinder looks for a circuit within the key fob and either finds it or not. If the two circuits communicate, your 3 starts, if not, you drag it to a dealer. Not that this helps you, but the good news is that it is not a common problem.

The link below relates to replacing the battery in your key fob.
DISCO3.CO.UK - View topic - both key fobs not working - help

The link below is to some files related to the power door locks.
DISCO3.CO.UK Photo Gallery - Power Window and Door Lock Circuits
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2005 LR3 HSE 4.4L V8 petrol; Traxide dual battery kit; Rear Cargo area LED lighting; PIAA 2500K H11 Yellow Ion fog light bulbs; Patch cellular antenna to underside of interior of glass roof; CounterAct LT-2 capacitive corrosion control system; LLumar AIR80 Blue Low E clear Infra Red heat reducing side window tint; Manual upper rear door cable release; Schrader valve "air in" mod to OEM air tank; Akebono ceramic pads on OEM solid vented rotors; LR4 hitch receiver; Wiggs D4 Bluetooth Module; 3 Blink signal light feature; Clock on the Dash; D4 Backup Camera.
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Old 10-18-2011, 07:53 AM   #3 (permalink)
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Default I have two key fobs and the same both seem to be ignored

Thanks for the reply:

Firstly, the photo was to mimic a similar photo I had of the kids with my previous old Landy workhorse three years ago:


Sometimes the chance of a photographic memory is worth the risk and in this case no bonnets were harmed in the making of the photo

Back to business - It not sure its a battery problem in the Key (though I wish it was) since the Fob will open/close the remote locking but when the LR3 goes into lockdown and immobilizes its as if the LR3 doesnt know a key is inserted... I wonder if the clever computerized key barrel is faulty, or maybe has a wiring glitch that fails to *see* the key?

Going to go experiment with it now... video camera in hand and see if I can replicate the problem...

Thanks again for the detailed reply....
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Old 10-18-2011, 02:36 PM   #4 (permalink)
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Default baffled


The mystery button is the boot (trunk) release switch.. and despite trying every combination of button pressing I couldnt get the LR3 to *forget* the key again, after its initial failure anyway.

I'm leaning towards the barrel being faulty and maybe not recognizing the key for some weird reason? As I say... it happens randomly... once when I stopped to fuel up... it just wouldn't start again and I was stuck there for 20 minutes until it finally worked....

next time I'm going to stop and sit with the key in the ignition on the off chance that it will recognize it after a period of time...

Love this LR3 but its got me at a point where I just cant trust it to drive any significant distance


bloody annoying...
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Old 10-22-2011, 08:59 PM   #5 (permalink)
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Does it do it to both keys or just one in particular. If you only have one you need a second one or else you will screw yourself. Seriously, without the extra one you are screwing yourself and your family in a big big way. If it still does it with the new key then its possible its a security issue that will have to leave at a dealership to determine if any of the locks are messed up or the security module is faulty.
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Old 10-26-2011, 04:25 PM   #6 (permalink)
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Default I do have two keys

Both key's have same problem...

which has been intermittent over recent weeks but has changed since this weekend....

Now it just turns over and over and over and "Houston we do NOT have ignition" Same result from both keys... have disconnected and fully charged battery with no change...

Time for a tow into dealer and get it looked at
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Old 10-26-2011, 05:01 PM   #7 (permalink)
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Default Try a Hard Reset, perhaps?

You might just want to try a Hard Reset before you call the tow truck, (actually flat bed because you sort of cannot tow due to All Wheel Drive.)

Well you can flat tow with all 4 on the ground but there are rules so ....

In brief, to start the hard reset process, open the hood but close all doors and let your 3 go to sleep - no radio display etc.
It is often a good idea to have a window rolled down and the key in your pocket whenever fooling about the vehicle.

Disconnect the ground battery terminal from the battery.
Disconnect the positive battery terminal from the battery.

Connect the negative cable to the positive cable. (NOT the battery.) You will need a short length, (a foot or so), of light gauge, (14 to 18 gauge AWG, stranded copper), wire to do this as there is not enough slack in the positive and negative battery cables for them to touch each other.

Hold them together for about a minute or so, (some say 5 to 10 minutes); you are discharging memory modules within the engine computer and elsewhere.

Reattach positive terminal to the battery.
Reattach negative terminal to the battery.

Try to start engine - well it might, but probably not. Since the problem is intermittent, the hard reset erases of some of the trouble codes.

You will still have to have the dealer solve the problem, but maybe your 3 will start just one more time.

This is a link to a thread in disco3 re hard reset.

DISCO3.CO.UK - View topic - Hard Reset
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2005 LR3 HSE 4.4L V8 petrol; Traxide dual battery kit; Rear Cargo area LED lighting; PIAA 2500K H11 Yellow Ion fog light bulbs; Patch cellular antenna to underside of interior of glass roof; CounterAct LT-2 capacitive corrosion control system; LLumar AIR80 Blue Low E clear Infra Red heat reducing side window tint; Manual upper rear door cable release; Schrader valve "air in" mod to OEM air tank; Akebono ceramic pads on OEM solid vented rotors; LR4 hitch receiver; Wiggs D4 Bluetooth Module; 3 Blink signal light feature; Clock on the Dash; D4 Backup Camera.
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Old 11-14-2011, 01:21 PM   #8 (permalink)
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Default quick update

Just thought it worth leaving a quick update in case anyone else has a similar problem...

In true naughty-LR3 style it didnt start for 24 hours and then miraculously started the following morning as if it had never had a problem. I hopped in and drove it straight to a local LR specialist.

Diagnostic tool showed no errors, apart from various power interruptions where I had unplugged/charged the battery.

He suggested loading a new ECU program, which we did and the problem seems to be solved (5 days and running)... A weird software glitch?

Lets see....
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