How to Reset Service Wrench Icon Light Smart Car fortwo:
- Turn ignition to ON position
- Press the left side TRIP button on the left side of the speedometer twice within the first 4 seconds
- Switch off the ignition within 10 seconds
- Press and hold the TRIP button again and switch the ignition to ON position
- Continue to hold button until service indicator flashes and jumps back to “0”
- Release button, turn ignition OFF and then back ON to verify reset was successful
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