Won't start, key fob not working.

Discussion in 'SL-Class' started by Kevin Beckner, Sep 9, 2017.

  1. Kevin Beckner

    Kevin Beckner New Member

    Help Please,
    2003 SL55 AMG - 63K miles

    Last Monday the key wouldn't turn and I couldn't start the car. After several attempts it finally turned and the car started. The next morning it wouldn't turn and the key fob won't open the doors or operate. I replace the key fob battery and that didn't fix the issue. I disconnected the consumer battery and reconnected after several minutes it finally started.
    I removed the alarm as suggested in several posts and that didn't seem to make a difference. I did start and run for a day after that but the same cycle continued all week.
    I have tried recharging the battery and making sure it holds 12.6V.
    I removed the battery terminals and let it sit for a while yesterday and it started.

    Today it's dead.
    I've disconected the consumer battery and let it sit for a while.
    Keyfob won't unlock doors or trunk or alarm.
    Windows won't work
    Key won't turn
    Horn doesn't work

    No messages or error lights.
    I have checked ALL the fuses, left side, right side and rear passanger side.

    Last edited: Sep 9, 2017

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