![]() Just recenlty had a problem with the Radio cutting in and out on our BMW 645CI - worried that it would be an expensive £300 plus fix, I searched the internet and found MCA. our MULF / MULF 2 bluetooth repair page.Once you have identified the faulty module we can help with the repair. Replace the above with a known to be functional module (from a friend, local service etcetera).677 HIFI System Professional – the TOP HIFI (also known as Logic 7) sound amplifier.644 Preparation f mobile phone w Bluetooth – this is the MULF or MULF 2.Enter the last characters of your VIN number on here or here and see if the listi includes: Check whether your car comes with the bluetooth and / or sound amplifier modules that are known to be prone to failure.The most common other causes: the bluetooth module (MULF or MULF 2) and the sound amplifier (TOP-HIFI, also known as Logic 7). Another module connected to the fiber optics ring is faulty and prevents the proper functioning of the CCC module.If a disk does not come out by itself, please do not force it out (as this may cause mechanical damage to the disk reading submodule). The CIC has only a disk reading failure (optical unit malfunction).You read the “Symptoms that may have other causes than a CIC failure” above and you found your symptoms on that list ? Then here is what you can try next: If you didn’t find your symptom here, check out the “CIC symptoms descriptions from our customers” on this link, which is a list of symptoms described by our clients who sent us their faulty CIC iDrive.Please check return shipping cost for iDrive controller and repair fee for CIC iDrive controller. If this is the only problem, you only need to send the iDrive controller. The CIC iDrive controller no longer lights up after battery problems.You can also send us both the CID display and the CIC and we check them both. If you checked the video connector, the cable and the CID (display), then the CIC iDrive is at fault. This errors can be caused by the CID not receivind video input from a faulty CIC iDrive. The CID display stays black and you see this error message when using a diagnosis software: “CID control unit defective”.The display (CID) stays black / red permanently.The display (CID) goes black / red from time to time.The CIC does not boot completely: it remains frozen on the BMW logo.The CIC iDrive is completely non functional (display is black).The CIC iDrive might work when the car is cold / on cold days, but fails to work when the car is warm / on warm days.The CIC iDrive is fully functional on particular days only.The CIC iDrive keeps rebooting: keeps cycling between displaying the BMW logo and a black screen. ![]()
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