Jetta Sedan L5-2.5L (CBTA) (2009)
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Is the phone powered down periodically? A phone is similar to a computer. The phone operating system needs to be rebooted periodically.
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Does the concern happen sporadically? If so, cycle the ignition key. Can the phone be paired? If so, replace the UHV-Low Module. This is a
software concern with PN 1K8035730 + index B or C.
Calls are dropped sporadically:
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Does this occur in a certain geographical area? If so, this is a problem with the cell phone network.
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Is the phone software on the compatibility list? If not, this could be a phone software concern.
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Are any DTC's present for the internal antenna that can not be erased in the UHV-Low module? If so, replace UHV-Low module.
Audio streaming inoperative:
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Verify the radio is either a RNS-510 touch screen navigation radio or a RCD-510 Premium 8 touch screen radio.
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Verify that the audio streaming option is turned on in the setup menu.
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Is the phone compatible for audio streaming. Check ElsaWeb for the latest UHV-Low Overview technical bulletin that contains the phone
compatibility list.
Tip:
It may take up to 70 seconds for audio streaming to start playing.
Audio streaming quality:
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Verify the quality of A2DP files. Quality of the music can vary depending on file compression.
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Does crackling heard through the speakers go away after a key cycle? If so, replace UHV-Low module.