E61: 5 series remote inoperative (NOT comfort Access)

Michael Technical Support Specialist Commack, New York Posted   Latest   Edited  
Resource
Opus IVS
Remote Inoperative (Not Comfort Access)

E61: 5 series remote inoperative (NOT comfort Access)

Test a remote with a RF checker to verify it is sending out a signal

Please use a wiring diagram

For vehicles UP TO 9/05 production:

Check B+ and B- at N8a (Diversity Antenna). 

The ground wire may not be there, which means its grounded through the hold down bolt.

IF no B+, check Fuse 77 wiring through tailgate and repair as required. 

If good, and no signs of water damage; press a button on remote and watch for a signal change at pin 2 of x13911.

If good, then go to the CAS and check pin 33.

If NO signal trace back, check for tailgate harness damage.

Vehicles AFTER 9/05 production:

Check for B+, B- at N8a (Diversity Antenna). Pin 5 may or may not be there. If not, the ground point is hold down bolt.

IF no B+, check Fuse 59. If good, check wiring through tailgate and repair as required.

Monitor Pin 2 at N8a (Diversity Antenna).

When pressing button on remote, you should see a change of voltage.

If NO change, check the rear window aerial. If the aerial is good, replace antenna amplifier. 

If there is a change, access CAS and check Pin 33 for a change of voltage when pressing button on the remote. 

If you have a change, replace CAS module. if NO change, you have a broken wire. Check the hinges for broken wiring

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Sadel Owner/Technician
Fairfield, Ohio
Sadel Default
 

Hey Michael, I know this isn't the same vehicle, but I have one that locking and unlocking does not work with remote. The vehicle is 2013 E70 with a CAS3. Dealer told customer the diversity antenna was faulty, after it was replaced by customer, same issue present. then the dealer said it was the gps unit wired into the CAS harness, so that was removed by customer to no avail. Now its in my shop…

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Michael Technical Support Specialist
Commack, New York
Michael Default
 

it looks like based on what your written this a Comfort access car will it allow you to start the car via CA? if you go into the cas module and perform a key test; does the cas recognize the key when pressing on the remote? how is the remote signal to the CA module? does it get the signal from the Ariel? check the CA module for water, corrosion

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