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Renault Megane II Issue: Car Won't Start, Card Reader Unresponsive, Immobilizer Light, 0 Errors

kaczor2502 9654 10
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  • #1 16864853
    kaczor2502
    Level 14  
    Posts: 294
    Help: 9
    Rate: 51
    Hello, I have a problem with Renault Megane II, after inserting the card into the reader, the lights come on, the lock is unlocked, the car does not respond to the button. After attaching the clip, 0 errors. When I insert the card into the reader, the red diode from immo lights up for a few seconds and goes out. 2 cards working - checked. Is it blocked?
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  • #2 16864883
    fructon
    Level 33  
    Posts: 1594
    Help: 241
    Rate: 978
    It is very possible that the UPC in the engine compartment has turned green on the connectors.
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  • #3 16864911
    kaczor2502
    Level 14  
    Posts: 294
    Help: 9
    Rate: 51
    I had that in another Megane, then there was a Christmas tree in the clip, no mistakes here.
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  • #4 16864967
    genek1000
    Level 35  
    Posts: 2292
    Help: 289
    Rate: 1047
    kaczor2502 wrote:
    the car does not respond to the button

    How does not react as you wrote that the ignition turns on :?: that is, it responds to the button :!:
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  • #5 16864979
    kaczor2502
    Level 14  
    Posts: 294
    Help: 9
    Rate: 51
    It does not react to the button in the sense that the ignition turns on, but the starter does not react. Clip connects seamlessly.
  • #6 16865371
    mar.wo
    Level 15  
    Posts: 147
    Help: 10
    Rate: 81
    Tap the hammer handle on the starter and someone will push the start, maybe it?
  • #7 16865388
    kamiloskop
    Level 23  
    Posts: 555
    Help: 42
    Rate: 278
    And what about the clutch or brake sensor?
  • #8 16865517
    sadek1979
    Cars specialist  
    Posts: 2534
    Help: 231
    Rate: 1404
    Megane will fire in two variants, i.e. in gear with the clutch depressed or in neutral with the brake depressed. press the button and hold it. Maybe the 'claw' in the reader broke, although it is the domain of the lagoon. You can briefly check the starter. In bsm under the hood, look for a 4-pin plug (if I remember correctly it is 3 white and 1 brown or green) there, give a plus through the fuse to be sure. It is second from the shore next to brown or green. It goes from the bsm directly to the starter. Alternatively, you can fire on the push, this way you will eliminate the starter.
  • #9 16865605
    robi1214
    Level 31  
    Posts: 1287
    Help: 151
    Rate: 866
    Connect with UCH - commissioning, driver parameters and you will see all the parameters that interest you.
  • #10 16865890
    milejow

    Level 43  
    Posts: 13047
    Help: 1558
    Rate: 5102
    tomasz sadowski wrote:
    Maybe the 'claw' in the reader broke, although it is the domain of the lagoon

    There are no micro switches in Megane, y in the pocket, all by card detection.
    The author will turn the starter briefly and check if it lights up.
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  • #11 16865955
    bodzio012
    Level 33  
    Posts: 1888
    Help: 161
    Rate: 777
    Did he check the fuses in BSM?
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Topic summary

✨ The discussion revolves around a starting issue with a Renault Megane II, where the car does not respond to the start button despite the ignition lights activating and the lock unlocking. The immobilizer light briefly illuminates, and no errors are detected when using a diagnostic tool. Suggestions include checking the UPC connectors for corrosion, tapping the starter to see if it engages, and verifying the functionality of the clutch or brake sensors. It is noted that the Megane can start in gear with the clutch depressed or in neutral with the brake depressed. Additionally, checking fuses in the BSM and ensuring proper card detection are recommended troubleshooting steps.
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