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alarmor

  1. Hartzpartz

    500 SL Alarm............or not?

    My 500 SL (1991) allegedly has option code 551 which should mean it has an alarm (described in the code list as "anti-theft warning system"). Now I don't want to sound daft but I can find any evidence that an alarm is fitted. I've tried locking the car with a window open, leaning in and...
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