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Steve, BMW Expert
Category: BMW
Satisfied Customers: 23882
Experience:  BMW Expert
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My 2005 645ci just went dead, no power at all, had key in

Customer Question

my 2005 645ci just went dead, no power at all
JA: Thanks. Can you give me any more details about your issue?
Customer: had key in ignition took out and no pwer at all to any thing no light comes on or anything
JA: OK got it. Last thing — BMW Mechanics generally expect a deposit of about $18 to help with your type of question (you only pay if satisfied). Now I'm going to take you to a page to place a secure deposit with JustAnswer. Don't worry, this chat is saved. After that, we will finish helping you.
Submitted: 1 year ago.
Category: BMW
Expert:  Steve replied 1 year ago.
Hello and welcome,

My name is ***** ***** it will be my pleasure to assist you today.
what exactly did you want to know about this? possible causes?
Customer: replied 1 year ago.
no power at all
Expert:  Steve replied 1 year ago.
I understand. what did you want to know? possible causes?
Customer: replied 1 year ago.
could i have tripped some type of alarm
Expert:  Steve replied 1 year ago.
I will provide an honest answer. I trust this will be appreciated. Please remember that a low rating PUNISHES me for being honest and that I receive nothing for my time until a positive rating is clicked.
no, you could not have tripped an alarm.
this is not a feature of the car, it is some kind of issue / component failure.
the most common cuses of this would be:
loose cable/connection
catastrophically failed battery
melting at the fuse box
bad battery unit (plastic box on top of battery) if fitted
falied CAS module
proper hands on checks and diagnostics will need to be carried out to verify.
Please let me know if you have further questions. Please do not forget to click a positive rating as this is the only way I receive credit for my answer, thank you. Best wishes with your vehicle.
Expert:  Steve replied 1 year ago.
If there are no additional questions please kindly click on a positive rating

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