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  1. #1
    Veteran Member Four Rings LoKisSpYdR's Avatar
    Join Date
    Jun 26 2012
    AZ Member #
    95867
    My Garage
    Brilliant Red B7 A4 2.0T Titanium quattro Tip - 2015 Q7 PP
    Location
    Reading, PA Area

    B7 Tiptronic TCU - NO Communication

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    It's been a while, but I used to be a fairly active member here until life got in the way. My car is a 2007 2.0T Tip. Anyway, to the chase... I recently did my second timing belt (primarily due to a faulty water pump o-ring) and tested everything prior to putting her back together. She started up fine, so I proceeded to reassemble and did an oil change. I went to start her up and back her out of the garage and got nothing. Check the battery, it was ok. Scanned it and found an immobilizer fault: 01315 - No Communication to the TCU.

    Where the hell is the TCU? What do I need to look for?
    B6 A4 1.8T Dolphin Gray qM
    4L Q7 3.0T Glacier White PP

  2. #2
    Veteran Member Four Rings Operator's Avatar
    Join Date
    Feb 06 2009
    AZ Member #
    38393
    My Garage
    328d, Tacoma
    Location
    Woodland Park, Colorado

    It's in the trans. And check the CB panel for the fuse.
    EFR 6758 by UM
    Info:
    Build
    Pics
    Feat'd AZ'er

  3. #3
    Veteran Member Four Rings LoKisSpYdR's Avatar
    Join Date
    Jun 26 2012
    AZ Member #
    95867
    My Garage
    Brilliant Red B7 A4 2.0T Titanium quattro Tip - 2015 Q7 PP
    Location
    Reading, PA Area

    CB Panel?
    B6 A4 1.8T Dolphin Gray qM
    4L Q7 3.0T Glacier White PP

  4. #4
    Veteran Member Four Rings Operator's Avatar
    Join Date
    Feb 06 2009
    AZ Member #
    38393
    My Garage
    328d, Tacoma
    Location
    Woodland Park, Colorado

    There is a fuse that allows for communication between the ECU and TCM/TCU. I don't have my car right now, or else I'd be more specific.
    EFR 6758 by UM
    Info:
    Build
    Pics
    Feat'd AZ'er

  5. #5
    Veteran Member Four Rings LoKisSpYdR's Avatar
    Join Date
    Jun 26 2012
    AZ Member #
    95867
    My Garage
    Brilliant Red B7 A4 2.0T Titanium quattro Tip - 2015 Q7 PP
    Location
    Reading, PA Area

    In the fuse box on the driver's side kickpanel?
    B6 A4 1.8T Dolphin Gray qM
    4L Q7 3.0T Glacier White PP

  6. #6
    Veteran Member Four Rings Operator's Avatar
    Join Date
    Feb 06 2009
    AZ Member #
    38393
    My Garage
    328d, Tacoma
    Location
    Woodland Park, Colorado

    Fuse #31
    EFR 6758 by UM
    Info:
    Build
    Pics
    Feat'd AZ'er

  7. #7
    Veteran Member Four Rings LoKisSpYdR's Avatar
    Join Date
    Jun 26 2012
    AZ Member #
    95867
    My Garage
    Brilliant Red B7 A4 2.0T Titanium quattro Tip - 2015 Q7 PP
    Location
    Reading, PA Area

    Dave, you are a savior!
    Next time you're in the Baltimore/Philly area or I'm in NC, I'm buying you dinner and as many drinks as you can consume!

    So I also did my cam follower this morning when I was doing my oil change and must have bumped the piggy-back that was in there.

    Thanks again, Dave!
    B6 A4 1.8T Dolphin Gray qM
    4L Q7 3.0T Glacier White PP

  8. #8
    Veteran Member Four Rings Operator's Avatar
    Join Date
    Feb 06 2009
    AZ Member #
    38393
    My Garage
    328d, Tacoma
    Location
    Woodland Park, Colorado

    Quote Originally Posted by LoKisSpYdR View Post
    Dave, you are a savior!
    Next time you're in the Baltimore/Philly area or I'm in NC, I'm buying you dinner and as many drinks as you can consume!

    So I also did my cam follower this morning when I was doing my oil change and must have bumped the piggy-back that was in there.

    Thanks again, Dave!
    What's a wingman for!!!!!
    EFR 6758 by UM
    Info:
    Build
    Pics
    Feat'd AZ'er

  9. #9
    Veteran Member Four Rings vce1232000's Avatar
    Join Date
    Jun 17 2013
    AZ Member #
    117368
    My Garage
    83 MK1 GTI Callaway Turbo stg II
    Location
    jersey city nj

    ..........
    APR KO4, APR HPFP,RS4 LPFP Cntr,145 bar PRV, APR TP, TT DP, GFB DV+, AWE FMIC, BFI CC, AWE Exhaust, RS4 Exh tips, ST CO, 034 RSB,034 St Dnsty Mtr Mts, New Sth West Bst guage, B7 RS4 8 pot Calipers.Goodridge SS brake lines frt & rr. Hawk HPS frt & rr. RS4 PS rack, RS4 Servotronic Relay,RS4 rims. S4 mirror caps,DTM frt bmpr and rs4 fogs,LED tail lites
    S4 Recaro Front & Rear seats. Led Interior Kit,United LED's fog lites
    2007 A4 Avant 2.0T Tiptronic 6spd

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