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  1. #1
    Active Member One Ring
    Join Date
    Feb 11 2018
    AZ Member #
    413862
    My Garage
    2016 Jeep Wrangler
    Location
    Limerick, pa

    Comfort module location 2009 A4 cabriolet

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    Does Anyone have the exact location or diagram of where the comfort module is in the 2009 A4 Cabriolet. Water is getting in and wet causing all kinds of electrical problems.
    Thank you!

  2. #2
    Established Member Four Rings
    Join Date
    May 20 2017
    AZ Member #
    399735
    Location
    New Hampshire

    Itís under the carpet, either on the drivers or passengers side floor, sealed in a black plastic box. I forget which side.

    Google will tell you for sure if you just search B7 A4 cabrio comfort module location. I hope that helps.
    2005.5 A4 Avant: JHM K04R, GIAC K04 tune, NGK BKR8EIX plugs, RS4 PRV, RS4 fuel pump controller, Treadstone TR6 intercooler core with JHM pipe kit, CTS Turbo test pipe, ECS Tuning snub mount, 034 street tranny mount, 034 street motor mounts, ECS Tuning turbo inlet pipe, ECS Tuning RA4 clutch conversion, Billy Boat Stealth cat back, Fluidampr

  3. #3
    Active Member One Ring
    Join Date
    Feb 11 2018
    AZ Member #
    413862
    My Garage
    2016 Jeep Wrangler
    Location
    Limerick, pa

    I was thinking it was in the rear because thatís where I thought water was coming in.. but I lifted my driver side mat and there is wet carpet under it. Where would water be getting in from if itís on driver side floor

  4. #4
    Established Member Four Rings
    Join Date
    May 20 2017
    AZ Member #
    399735
    Location
    New Hampshire

    Well you donít have a sun roof so that gets ruled out right away 😀

    A lot of times what happens is the rain drains in the battery area get clogged up, that compartment fills with water and it flows in the cabin from the ECU box area. Under the ECU box there is a large opening into the cabin. The box has a seal but can only keep out so much water.

    Also, there is a plastic piece of trim directly under your windshield. Itís held in with clips but should be sealed as well. If youíve ever had a windshield replaced, itís very likely that the trim was removed from your old windshield and wasnít sealed correctly when it went back on the new one.

    And, if youíre getting water in the drivers side, itís possible for water to get into the passenger side as well because thereís channels in the body under the carpet.

    You gotta Google where the comfort module is located because I forget what side itís on. I wanna say itís on the passenger side (right hand) under the carpet. Whatever side itís on, the seat has to come out and some of the trim has to be removed to get to it.

    If youíre having strange electrical issues and have a wet carpet, youíll at least need a new comfort module and maybe some electrical wire repairs too. Thatís what my gut tells me.
    2005.5 A4 Avant: JHM K04R, GIAC K04 tune, NGK BKR8EIX plugs, RS4 PRV, RS4 fuel pump controller, Treadstone TR6 intercooler core with JHM pipe kit, CTS Turbo test pipe, ECS Tuning snub mount, 034 street tranny mount, 034 street motor mounts, ECS Tuning turbo inlet pipe, ECS Tuning RA4 clutch conversion, Billy Boat Stealth cat back, Fluidampr

  5. #5
    Established Member Four Rings
    Join Date
    May 20 2017
    AZ Member #
    399735
    Location
    New Hampshire

    Like I told you in the other thread, nobody will be able to tell you where the water is coming in for sure without doing an actual water test on various places with a hose. I used to pull seats and carpets out, place a hose on the top of the windshield and look for water coming in. Actually seeing the water come in is the only way to tell for sure.
    2005.5 A4 Avant: JHM K04R, GIAC K04 tune, NGK BKR8EIX plugs, RS4 PRV, RS4 fuel pump controller, Treadstone TR6 intercooler core with JHM pipe kit, CTS Turbo test pipe, ECS Tuning snub mount, 034 street tranny mount, 034 street motor mounts, ECS Tuning turbo inlet pipe, ECS Tuning RA4 clutch conversion, Billy Boat Stealth cat back, Fluidampr

  6. #6
    Active Member One Ring
    Join Date
    Feb 11 2018
    AZ Member #
    413862
    My Garage
    2016 Jeep Wrangler
    Location
    Limerick, pa

    Thank you. I will pass it along to my mechanic to check these things. At least I have some idea of what to have them look for.

  7. #7
    Established Member Four Rings
    Join Date
    May 20 2017
    AZ Member #
    399735
    Location
    New Hampshire

    Youíre welcome. I wish I could just tell you what it was for sure but thatís not likely to happen.

    The seal for the cabin pollen filter is another thing that can cause leaks in the car. Basically the same thing happens when the drains under the battery get clogged. Water fills up the compartment and leaks in the pollen filter instead of the ECU box side.

    Itís fairly common so thereís a good chance of it being one of the 3 main things I pointed out. I never really worked on too many cabrios when I was a tech. Those were really labor intensive so the shop foreman usually took one for the team and did those. 😀

    I hope itís not a top problem because that could get expensive real fast.

    Good luck and be sure to update this thread so we know what it was.
    2005.5 A4 Avant: JHM K04R, GIAC K04 tune, NGK BKR8EIX plugs, RS4 PRV, RS4 fuel pump controller, Treadstone TR6 intercooler core with JHM pipe kit, CTS Turbo test pipe, ECS Tuning snub mount, 034 street tranny mount, 034 street motor mounts, ECS Tuning turbo inlet pipe, ECS Tuning RA4 clutch conversion, Billy Boat Stealth cat back, Fluidampr



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