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      09-13-2021, 07:18 PM   #39
Krivero9
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Drives: 2016 BMW 750i xDrive
Join Date: Sep 2020
Location: Denver, Colorado

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Quote:
Originally Posted by thestimp View Post
HELLO FRIENDS!

I have a post a few months back from the same problem and I tore my car apart to check all things considered.

http://e84.xbimmers.com/forums/showthread.php?t=1204899


So I have figured out the most common problem with the CAS in our cars. Its the DOOR HANDLE. If you have a defective door handle it will SHORT OUT YOUR FUSES every time you try and activate it.

The best way to test this theory is:

1. Go buy 10 5amp fuses
2. Remove both driver/passenger handles and open your trunk without using the key fob. (if that works continue) Now you know your trunk works.

3. Replace passenger handle test out the comfort access - try starting the car without inserting key. (if that works continue) Passenger handle works.

4. REMOVE PASSENGER HANDLE again -and CONNECT the drivers handle - start car with out key. Now you know your drivers handle works.


5. Replace both handles and test keyless start. If the keyless start doesnt work at either of these steps odds are the fuse blew and that saves you time from checking constantly.

If you do all this and it does not blow the fuse, it is an actuator in one of your doors, hug your wallet and say good bye as you drop your car off to be "repaired".

This will help you narrow down what caused your short.

It is a KNOWN fact that the drivers handle is usually the culprit.



If you find a defective peace, you can just unplug it and your keyless start and other handles will work just fine with out it. You'll just be dealing with a first world problem until you pony up for the repairs.

Hey! I took a picture of this post for future testing and it led me to find my CA issue in my 09 E92, which turned out to be a passenger handle and I disconnected it for now until I get a new one. Big thanks!! Been without CA for 2 years before I decided to try and find the issue. It started when I was taking a really hard turn and ended up disconnecting the negative from the battery, somehow made the handle short out. BIG THANKS
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