MNCB0904

Hi Everyone,

I have been a passive reader for all of the years and love this forum as I have been able to solution through a lot of stuff with my A8 by reading and searching through these forums.

Two days ago - we had a massive rain-storm which lasted 2 days in CT. I had been driving my wife's car so I hadn't been in mine during the rainstorm as I have been waiting for my rear pads and rotors to come in so i could do them. Anyway, when i drove into the office yesterday car drive fine. When i left the office, I noticed that there was a slight musty smell in the car and as i was backing up out of my spot - the camera display started flickering, followed by a TPMS error, then an adaptive headlight error, then a parking brake error, and then a headlight range error as I was driving on the highway and then they disappeared and re-appeared periodically during the drive. About 1 mile from my exit - all of the lights appeared again, and the display in the speedo and the MMI screen blacked out and turned back on and i felt the power steering go in and out. (est travel time 10mi) As soon as I pulled in my driveway, I heard some water sloshing and then felt the carpet in the pass footwell was soaked. I have been working to dry the carpet, blotting and wet-vacing and this morning I was going to start pulling the carpet up.

Based on what I have read in a couple of the posts - there are some important modules underneath that footwell and I'm afraid that based on what i experienced on my drive home that the water may have cooked em and now my repair bill could eke into the 5 figures. (which with a 1 yr baby and my wife on unpaid maternity leave for #2 - 5 figures is not happening). Or the abs worst case its royally f***ed.

I do not have a ross-tech and have been weighing the investment given the car's age so i don't have the codes to be able to report on what the errors are. Given from what I have read, there was water sloshing when i turned into my driveway and the location and the car being sealed up makes me think it was the plenum drains or sunroof drains that possibly leaked into the car.

I am kind of unsure of what I should do now. I do not have a local guy that I feel confident with that knows the electronics of the car. I am also unsure If i should call up my insurance and start a possible comprehensive claim in the event i have to take it up to the dealer and have them do surgery.

I'd appreciate any advice that you guys may have. Kinda getting desparate here.

mishar

It looks like flood damage. Start with cleaning plenum, heater and roof drains. Lift the carpet (both sides) and dry the area. Than you will need VCDS scan in order to find out which modules has problem. You can get help with that here. If you are lucky it would be just Electric Module and drying might help. Anyways there are all of them available on eBay fairly cheep. Watch for hardware and software numbers. Replacing is not too complicated.

raj99

The very first thing you need to do is clean out the drains... Use the search and you'll find plenty of articles on how to do them.

Then you'll need to attempt to dry out the inside of your car and in particular the electronics.

This may require you to revive your carpeting and physically remove and open up the soaked electrical modules or look to replace them. But you really need a vcds to determine the extent of the issues and which module in particular is causing the issue(s).

MNCB0904

1) What other modules are underneath the floor or within the plenum area?
2) How much of a PITA is it to remove the carpeting?
3) Where are the plenum and heater drains?

raj99

Have your tried using the SEARCH function? Since all the questions you've asked have been answered by others.

mishar

1) Almost of them.
2) Remove the seal trim and the third pedal on the drivers side and lift it from sides.
3) Plenum drains are at the plenum bottom a bit hidden by the fan box and heater ones are close to the gas pedal and symmetrical at the other side. There are a few treads with pictures.

MP4.2+6.0

+1,2,3,4. As stated, search about drains themselves, including that for plenum the bottom tips can get clogged or basically just get stuck closed from rubber sort of sticking to itself from the lips they have at the final tip.

For a simple how to on plenum to get at much of the underlying cause: at least annually I pull the two halves of the plastic plenum cover off and just start blowing air from a compressor from one side to other. Most recently I added a battery powered leaf blower to the routine for more oomph. Takes maybe 10 minutes of back and forth to chase the leaf crap out of there--up over the top of the recess and out of the car. Invariably there is a lot of plant debris no matter that car is often garaged--besides what you can easily see, often near sides below base of windshield, also essentially under the HVAC box, under the master brake/power unit, etc. Hit it with forceful air and you'll see. Hard to get in there thoroughly with a shop vac BTW for folks thinking that.

MNCB0904

Thank you guys for the input - Without getting too sentimental it really often does take village and I am grateful for having the minds on here for the advice. I will let you all know how i make out with the repairs / codes.

MNCB0904

Update:
I ran a scan and i got the following read out. Fortunately everything is working ok after blowing out crap from the plenum drains and the sunrooof drains
I am guessing that the tpms control mode has crapped out.

Now - there is a part # that ends in 9773 and 973 A . Outside of a couplenhundred bucks does anyone know the difference?

VIN:

CAN network gateway
Part #: 4L0910468
Coding: F5D5DF7F30720E (hex)
Component: J533__Gateway
Fault codes:
01044 Control Module Incorrectly Coded
00470 Combination comfort Databus in Single Wire

Engine
Part #: 4E1910560A
Coding: 01060009190F0120 (hex)
Component: 4.2l V8/4V
[No fault codes]

Engine (2)
[failed to connect]

Engine (3)
[failed to connect]

Transmission
Part #: 4E1910156C
Coding: 2 (decimal)
Component: AG6 09L 4,2lFSI
[No fault codes]

ABS
[No fault codes]

Brake booster
[failed to connect]

Parking brake
Part #: 4E0910801C
Coding: 922 (decimal)
Component: EPB A32C0220
[No fault codes]

Power steering
[failed to connect]

Steering angle
[failed to connect]

Active steering
[failed to connect]

Steering wheel
Part #: 4E0910549A
Coding: 12241 (decimal)
Component: J0527
[No fault codes]

Airbags
Part #: 4E0910655C
Coding: 532707 (decimal)
Component: Airbag 9.41
[No fault codes]

Instrument cluster
Part #: 4E0910951C
Coding: 48263 (decimal)
Component: KOMBIINSTR. VDO
[No fault codes]

Infotainment display
Part #: 4E0910731K
Coding: 3 (decimal)
Component: Interfacebox
[No fault codes]

Infotainment display (front)
[failed to connect]

Infotainment display (rear)
[failed to connect]

Infotainment display (rear left)
[failed to connect]

Infotainment display (rear right)
[failed to connect]

Infotainment display (roof)
[failed to connect]

Navigation
Part #: 4E0910888C
Coding: [none]
Component: MNS US
[No fault codes]

Voice control
Part #: 4E0910754Q
Coding: [none]
Component: SDS 3501 US
[No fault codes]

Radio
Part #: 4E0910541M
Coding: 2 (decimal)
Component: TUNER EU/US/RDW
[No fault codes]

Digital radio
Part #: 4E0910593K
Coding: 100 (decimal)
Component: SDAR SIRIUS
Fault codes:
02635 Tuner not enabled / activated

Satellite radio
[failed to connect]

Sound system
Part #: 4E0910223P
Coding: 26 (decimal)
Component: DSP-High D3
[No fault codes]

Media player
Part #: 4E0910111F
Coding: [none]
Component: CD-Changer
[No fault codes]

Media player
[failed to connect]

Media player
[failed to connect]

Media player
[failed to connect]

TV tuner
[failed to connect]

Digital TV tuner
[failed to connect]

Infotainment system
[failed to connect]

Infotainment system 2
[failed to connect]

Telephone
Part #: 4F0910336D
Coding: 10900 (decimal)
Component:
[No fault codes]

Immobilizer
[failed to connect]

Towaway protection
[failed to connect]

Headlight aiming
Part #: 4F0910357F
Coding: 18 (decimal)
Component: AFS 1
Fault codes:
02628 Right swivel module position sensor
00456 Control Module for Access and Start Control (J518)
01330 Central Control Module for Central Convenience (J393)
00457 Control Module for Network (J519)

Left headlight
[failed to connect]

Right headlight
[failed to connect]

Tire pressure monitor
Part #: 4E0910273A
Coding: 232125 (decimal)
Component: Reifendruck 3
Fault codes:
01472 Aerial for monitor f-l type pressure (R59)
01473 Aerial for monitor f-r type pressure (R60)
01474 Aerial for monitor r-l type pressure (R61)
01475 Aerial for monitor r-r type pressure (R62)

Tire pressure monitor
[failed to connect]

Heater & air conditioning
Part #: 4E0910043B
Coding: 37185 (decimal)
Component: KLIMAAUTOMAT
[No fault codes]

Rear heater & A/C
[failed to connect]

Auxiliary heater
[failed to connect]

Auxiliary heater
[failed to connect]

Parking sensors
Part #: 4E0910283C
Coding: 221208 (decimal)
Component: Parkhilfe 8-Kan
[No fault codes]

Parking/steering assist
[failed to connect]

Auto-leveling suspension
Part #: 4E0910553H
Coding: 15510 (decimal)
Component: LUFTFDR.-CDC
[No fault codes]

All-wheel-drive system
[failed to connect]

Differential lock
[failed to connect]

Chassis
[failed to connect]

Suspension
[failed to connect]

Central electronics
Part #: 4E0910279Q
Coding: 143123 (decimal)
Component: ILM Fahrer
[No fault codes]

Central electronics 2
Part #: 4E0910280A
Coding: 10111 (decimal)
Component: ILM Beifahrer
[No fault codes]

Body/convenience system
Part #: 4E0910289D
Coding: 48694 (decimal)
Component: Komfortgeraet
[No fault codes]

Body/convenience system
[failed to connect]

Driver's door
Part #: 4E1910802B
Coding: 32364 (decimal)
Component: Türsteuer.FS BRM
[No fault codes]

Front passenger's door
Part #: 4E1910802B
Coding: 32364 (decimal)
Component: Türsteuer.BF BRM
[No fault codes]

Rear left door
Part #: 4E0910802A
Coding: 32364 (decimal)
Component: Türsteuer.HL BRM
[No fault codes]

Rear right door
Part #: 4E0910802A
Coding: 32364 (decimal)
Component: Türsteuer.HR BRM
[No fault codes]

Trunk
[failed to connect]

Driver's seat
Part #: 4E0910760D
Coding: 4071530 (decimal)
Component: Sitzmemory FS H
[No fault codes]

Front passenger's seat
Part #: 4E0910760D
Coding: 4071520 (decimal)
Component: Sitzmemory BFS H
[No fault codes]

Rear seat
[failed to connect]

Rear seat (driver's side)
[failed to connect]

Entry assist (driver)
[failed to connect]

Entry assist (passenger)
[failed to connect]

Ignition authorization
Part #: 4E0910131
Coding: 410624 (decimal)
Component: FBS AUDID3
[No fault codes]

Battery regulator
Part #: 4E0910181C
Coding: [none]
Component: J0644 BEM
[No fault codes]

Battery charging
[failed to connect]

Convertible top
[failed to connect]

Roof electronics
Part #: 4E0910135A
Coding: 3477 (decimal)
Component: Dachknoten D3
[No fault codes]

Windshield wipers
[failed to connect]

Trailer
[failed to connect]

Adaptive cruise control
[failed to connect]

Lane-change system
[failed to connect]

Lane-maintain system
[failed to connect]

Position sensing
[failed to connect]

Back-up camera
Part #: 4E0910441
Coding: 1120603 (decimal)
Component: J772__Rearview
[No fault codes]

Telematics
[failed to connect]

Driver ID
[failed to connect]

Intercom
[failed to connect]

Additional functions
[failed to connect]

Operations
[failed to connect]

Hybrid engine
[failed to connect]

Back-up camera
[failed to connect]

Image processing
[failed to connect]

Sliding door (left)
[failed to connect]

Sliding door (right)
[failed to connect]

Obtained with Carista 311199 for iOS.
Download app: https://itunes.apple.com/app/id954363569
Facebook: https://www.facebook.com/caristaapp


Sent from my iPhone

Shark_V8

If this is a legit case, use a real scanner instead of a phone-toy