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#1
05-23-2006, 10:16 AM
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'88 300TE Alarm issue
My sons '88 300TE has let us down twice with a dead battery. The car was parked for 2 days both times... but has been left longer before with no problems.
As soon as I apply the charger, the alarm starts flashing the lights... the PO had removed the wire from the alarm horn, so I assume this is an ongoing problem. The battery is brand new. I pulled up the pass carpet and shield and removed the lower larger connector from the alarm box after reading about that in a search. I could not get the upper smaller connector off, so I left it. Is that correct, or should I remove the upper too?
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2009 Mercedes ML320 Bluetec 
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#2
05-23-2006, 12:04 PM
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Disconnect Both connectors....pry with screwdriver if needed.
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MERCEDES Benz Master Guild Technician (6 TIMES) ASE Master Technician Mercedes Benz Star Technician (2 times) 44 years foreign automotive repair 27 Years M.B. Shop foreman (dealer) MB technical information Specialist (15 years) 190E 2.3 16V ITS SCCA race car (sold) 1986 190E 2.3 16V 2.5 (sold) Retired Moderator
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#3
05-23-2006, 03:46 PM
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Thanks MB Doc.
I will do it the other plug tonight. The battery was dead flat again this morning despite a charge and 10 mile drive on monday.  Does having the alarm disconnected have any other issues?
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2009 Mercedes ML320 Bluetec
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#4
05-25-2006, 11:05 AM
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Ok, I took out the other plug, and charged the battery for about an hour, then I did a 3 mile drive.
This morning, it was good and started fine. Thanks! So, is it a faulty unit/sensor? Are they repairable?
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2009 Mercedes ML320 Bluetec
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