Renault master 2004 not starting

Discussion in 'Car Repairs / Maintenance' started by camerart, 5 Sep 2021.

  1. camerart

    camerart

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    Hi,
    This morning my Renault Master 2500 2004 won't start.
    Plenty of fuel, plenty of battery.
    I've trying the hand fuel pump.
    This has happened 2x before, then started.

    When the ignition is ready to start, the red light flashes constantly.

    Any ideas please?

    It just started, so I can get home, phew.

    Cheers, Camerart
     
    Last edited: 5 Sep 2021
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  3. Burnerman

    Burnerman

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    Usually an immobiliser issue, try locking the doors, opening them again then immediately trying for a start.
    John :)
     
  4. camerart

    camerart

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    Hi J,
    Possible, but as you can see, it did start after 10 mins, and one suggestion is the fuel filter, that I have to admit I didn't change this year.
    Thanks, C
     
  5. Burnerman

    Burnerman

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    For sure, it can’t do any harm.....it’s the flashing lamp that gets me.
    A new crank position sensor is also a good move, especially if the fault seems temperature related.
    John :)
     
  6. camerart

    camerart

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    Hi J,
    What does the flashing light get you?

    The light is always flashing when it is locked, then as the key is turned it goes full on, (If I'm correct,) then goes off when happy, and start.

    This is when it has been stood overnight, so cold, I doubt it is the crank position sensor.
    C
     
    Last edited: 5 Sep 2021
  7. Harry Bloomfield

    Harry Bloomfield

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    On some vehicles, the tacho needle will bounce up and down, when cranking/ if it fails to start. No bounce suggests crank sensor not working.
     
  8. camerart

    camerart

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    Hi H,
    I've never seen any movement on anything while starting, but I'll watch closer next time.
    C
     
  9. camerart

    camerart

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    Hi,
    I've been told this is something to do with the immobiliser, but I haven't figured out quite what's happening.

    When the key is out and locked, the led flashes periodically. When I put the key in it noramlly goes out and I can start it, but sometimes it flashes quickly, when it is still immobilised.
    Either the key is worn so doen't push a switch, or there is an RFID chip which talks to the van when I put it in the keyhole, I'm not sure.
    C
     
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  11. Harry Bloomfield

    Harry Bloomfield

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    The RFID chip is around the size of a grain of rice, needs no power or battery and is inserted in the plastic part of the key. It is read by a coil, which is fitted around the ignition key hole. Wrapping the plastic part of the key with aluminium cooking foil, should prevent the chip being read and the vehicle will not start because of the immobiliser.

    What some people do as a botch - is take the chip out of a working key and stick it close to the ignition lock, so spare key can be cut and used without need to go to the manufacturer for a key with a chip.
     
  12. camerart

    camerart

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    Hi H,
    At this late date, I have finally figured out to ask Renault! I was told about this RFID chip, but he said to change the batteries in the key. I know about these chips, and that they don't need power, so I wonder if he is correct? One thing is that it probaly does need a bettery, so maybe he is correct.

    P.S In a similar way to how the RFID work, spies use similar technology, where a transmitter sends power and DATA to the secret chip inside a building, which wakes up and listens to the room or whatever it is designed to do, then transmits back.
    Because there is no power they are difficult to find as they are asleep till woken up. Scary!
    C
     
  13. Harry Bloomfield

    Harry Bloomfield

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    If he is right - I don't think he is, but worth a try. You will see the RFID chip inside, just clipped into the plastic. The battery is only to power the remote control to lock/unlock the doors.
     
  14. Mr Chibs

    Mr Chibs

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  15. camerart

    camerart

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    Hi H,
    The plastic is a replacement for my broken key, cheap and no technology (RFID)

    I split the key ring, so two sides of plastic, one with the key, plus a PCB with battery.
    Tried the key without the PCB, error Tried the key with the PCB, no error. Tried the key with the PCB minus battery, no error.

    I think I see the RFID antenna, as it goes the long way round a to b, and is viad each side of the PCB.

    So you're correct, but the RFID is on the PCB.
    Cheers, C.
     
  16. Harry Bloomfield

    Harry Bloomfield

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    Not convinced. That will be the remote control antenna.

    No reason why it would be mounted on the PCB. Try leaving the PCB out and starting it with just the metal part of the key, then try it again with just the plastic part near the ignition lock (no PCB) - if it then starts, its in the plastic.

    This sort of thing, though modern ones are much tinnier... The size of a grain of rice...

    [​IMG]
     
    Last edited: 10 Nov 2021
  17. camerart

    camerart

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    Hi H,
    If you look at #13, hopefully I show that the antenna is on the PCB. There is a second antenna, in the shape of a coil, that I think may be the remote one.
    C
     
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