Faults: B7F316, 32D, 32B.

[rayjay]

New to this forum, hope someone can help.

"SOS call system failure" came up on instrument panel. Thought it was the battery in the Telematic Unit as suggested. Replaced this with great struggle getting into the rear roof lining! Checked the Fault Codes and removed them. When ignition turned on again I get the above codes. These refer to GPS aerial: open circuit, Telematics Aerial 2 Open Circuit, and telematics Aerial 1 Open Circuit. Can not find a schematic diagram for the Telematic unit to see where to start. Is it possible that I have not replaced the unit correctly or that a connection has come out? What connections are the aerials?

[Greydog]

Morning Ray

Welcome to the Forum

From  memory there are several connections but they should be colour coded I think the only route is to go back over what you did just to make sure tey are all correct an seated make sure the earth hasn't been disturbed

Good Luck

Dave

[rayjay]

1 hour ago, Greydog said:

Morning Ray

Welcome to the Forum

From  memory there are several connections but they should be colour coded I think the only route is to go back over what you did just to make sure tey are all correct an seated make sure the earth hasn't been disturbed

Good Luck

Dave

Thanks Dave.

It looks like that's the only way to go. I think it may be the 4 terminals that actually connect to the sharks fin. Maybe I didn't  push it right in when putting it back. Mind you the clip did pop out>

[rayjay]

Hi Dave.

I have had another look at the TCU and re-fitted it.

After clearing the codes and restarting the ignition I get the following fault code:B7F317 "GPS aerial Short Circuit to ground" 

I know that in previous post you mentioned the earth connection, do you know where it is? Could it be one of the four terminals that go from TCU to the Shark Fin? If so any idea which one!

It seems to be that you cure one problem and endure another!!

Cheers,

Ray.

[Greydog]

Morning

A short to ground would be a wiring fault or an internal fault in the Shark Fin

Tried disconnecting each plug in turn to see if the short disappears that should point to the faulty connection if it doesn't then it is probably inside the shark Fin

Dave

All my contacts are still scratching their heads  still

[Greydog]

Just had a mail from a BMW contact in the USA apparently he has seen this on X5's the BMW approach.
CAUSE
Found water leaking into headliner on top of the telematics control unit
CORRECTION
Replace shark fin, antenna, telematics control unit, battery and program 

Hope this helps 

 

[rayjay]

Have checked this area for any damp but all dry. 

[Greydog]

Doesn't rule out an internal short on the shark fin though