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7 Series - E65 / E66 (2002 - 2008)
Discussion of BMW's 4th generation E65/E66 7 Series flagship. The E65 generated much controversy, due to its radical styling and iDrive user difficulties. Nonetheless, the E65 broke records to become the best-selling 7-series iteration ever, especially after its 2005 facelift.

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  #1  
Old 05-29-2015, 06:33 PM
noohra noohra is online now
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Location: Oceanside
 
Join Date: May 2012
Posts: 9
Mein Auto: '05 745Li
745Li TCU DC Short

My media system would continuously resetting while on every ten-fifteen seconds. I could not disable the radio since the system would restart and re-energize the radio then shut down.

Bought a fiber optic loop at the dealer and discovered my TCU was causing the continuous reset of the media system. I opened the TCU and found one brownish (burnt from high heat) metal can flat pack capacitor on the top board.

With the loop installed the media system works flawlessly. I don't have SVC or Bluetooth since the TCU is removed. I would love to have Bluetooth again!

Is there shop that repairs TCUs or a source for the metal can capacitors?
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  #2  
Old 07-21-2015, 04:55 PM
noohra noohra is online now
Registered User
Location: Oceanside
 
Join Date: May 2012
Posts: 9
Mein Auto: '05 745Li
Installed replacement capacitor, buttoned up unit and installed in vehicle. I have Bluetooth functionality again without the reoccurring SOS warning and yellow car in dash screen.

I could not find the same metal film package so I settled on an off the shelf tantalum from Fry's. Had to buy bolts from BMW which brings total cost of repair to about $7!

Wish I had fixed this month's ago...took about ten mins!
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