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SL/R230: A question on the alarm

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Old 01-30-2021, 03:56 PM
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2007 SL550
A question on the alarm
Question for the experts. I replaced my alarm horn and now I get the chirp when locking and unlocking. But my alarm still doesn’t do anything. No lights, no horn either from panic button or when opening a locked door. The only thing that happens when I hit the panic button is it kills my aux battery overnight as if the alarm had been going all night. Any thoughts?
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Old 01-31-2021, 02:48 AM
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replaced with used or new ?
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Old 01-31-2021, 03:09 AM
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you can test your siren here

Dr-side sam > Actuations > AEA alarm signal siren



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Old 01-31-2021, 06:33 AM
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Originally Posted by BenzNinja
replaced with used or new ?
bought a used one.
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Old 01-31-2021, 06:44 AM
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Originally Posted by Jim Muller
bought a used one.
might be failing ... did you check your plug ? did you check part number ?
only way to test is as above
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Old 02-01-2021, 04:43 AM
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Originally Posted by BenzNinja
might be failing ... did you check your plug ? did you check part number ?
only way to test is as above
Hi. Yes plug is good and part number matches. I’ll test as above once I’m set up.
Thanks
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