Heidelberg Vehicle Not Detected / Handshake Failure Without Code

Vehicle will not start charging, no error code on charger, LEDs show ready state but car reports ‘charging not possible’.

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Possible Causes

Dirty or oxidized Type 2 contacts, Weak spring contacts in Type 2 socket, Slightly misaligned plug insertion, Vehicle firmware incompatibility with charger settings

How to Fix / Troubleshooting

Safety first: Do not insert or remove the plug under visible arcing or damage. Turn off mains before internal inspection.

  • 1. Reconnect carefully:
    • Unplug the connector from the vehicle and charger (if socketed).
    • Reconnect firmly until you hear/feel the latch click.
  • 2. Clean contacts:
    • Inspect the Type 2 plug and socket for dirt or light corrosion.
    • Use electrical contact cleaner and a lint‑free cloth to clean the pins.
  • 3. Try another vehicle or cable:
    • If possible, test with a different EV or cable to isolate whether the issue is vehicle‑ or charger‑side.
  • 4. Check charger mode:
    • Ensure the Heidelberg charger is not in a restricted mode (e.g., RFID‑only) that prevents automatic start.
  • 5. If persistent:
    • Have a technician inspect the Type 2 socket assembly for worn contacts and replace if necessary.
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Repair Difficulty

Easy 2/5

Required Part

Type 2 Socket Assembly
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