Im back with yet another problem on my 2004 D2 td5 Landmark

Hi,

I have had a couple of issues;

Back story- i have just installed European headlights and had a contrôlé technique where the car went up on a ramp and the guy completed an inspection underneath.

Yesterday I had the two green lights (m and s each letter is in a circular cog) flashing on the cluster which when I looked online they are apparently for a transmission fault. I cycled through all gear stick modes turned the ignition off and on and the lights turned off. I was stationary so dont know if it actually went into a limp mode. I then drove 4.5hours through the alps to the south of France without issue in 30° plus tempretures. The car behaved very well.

Today the car wouldnt start unless I took the key out and pressed lock unlock then it would start. The four times I turned off on this morning each time the car would not start without removing the key cycling the locking. Then it would go.

I drove about 20 mins after the above went for a walk and when I come back to the car a few hours later the key fob wasnt working.

I had to enter the code with the key to disarm the immobiliser. I changed the battery in the fob i had a spare duracell battery with me. (I only changed the first battery 4 weeks ago) also the red light on the fob was working before I changed the battery and after with the new one.

the spare key is at home 4.5 hours away. So i cant test that.

What can cause the fob to suddenly just stop working?

Many thanks

Hi, you'll have to check with the second fob too and if it's the same the RF receiver is the first suspect which would cause the starting issue too cos it doesnt communicate with the passive remmobilisation exciter coil then that suplimentary unlock command with the fob is needed to remmobilise it for 15 seconds, the receiver is in front of the rear sunroof's seal under the headliner and it's plug and play ... he best is to disable the immoiliser with nanocom or similar and set it to "always ..." see this https://www.landyzone.co.uk/land-rover/recommendation-for-d2-owners.184078/

sierrafery said:

Hi, you'll have to check with the second fob too and if it's the same the RF receiver is the first suspect which would cause the starting issue too cos it doesnt communicate with the passive remmobilisation exciter coil then that suplimentary unlock command with the fob is needed to remmobilise it for 15 seconds, the receiver is in front of the rear sunroof's seal under the headliner and it's plug and play ... he best is to disable the immoiliser with nanocom or similar and set it to "always ..." see this https://www.landyzone.co.uk/land-rover/recommendation-for-d2-owners.184078/

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Thank you for the information above.

I will check with the 2nd fob. I wont be able to check that until Wednesday.

Is it possible the M +S fault is connected to the key fob and starting issue?

korthaldisco2 said:

Is it possible the M +S fault is connected to the key fob and starting issue?

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In a very strange way it can be connected if the problem comes from the BCU which affects them all, you'll have to see the stored fault code in the autobox ECU but as long as it didnt affect anything the M +S can be a sign of weak battery too... investigations are needed

sierrafery said:

In a very strange way it can be connected if the problem comes from the BCU which affects them all, you'll have to see the stored fault code in the autobox ECU but as long as it didnt affect anything the M +S can be a sign of weak battery too... investigations are needed

Click to expand...

I read a post where you talk about the the xyz switch position and if the BCU doesnt receive input it can inhibit the starter relay.

I dont have nanocom equipment and cant afford it either or cant justify spending another 400-500 on the car again in the same week.

Is this what owning a LR is about constant cost and problems???

korthaldisco2 said:

I read a post where you talk about the the xyz switch position and if the BCU doesnt receive input it can inhibit the starter relay.

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The XYZ or starter inhbitor has nothing to do with your problem or with the fob's misbehaviour nor responding to the EKA code remobilisation, it's something else, probably BCU related but not subject of a guessing game without proper diagnoze.

korthaldisco2 said:

Is this what owning a LR is about constant cost and problems???

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Seems so ... at least untill the problems were all properly fixed and you learn how it works ... like i did, took me about 10 years and i invested in diagnostic tools but now i'm problem free with it or if they appear i know what to do