2010 A5/B8 2.0L Turbo HVAC/AC issue

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03-10-2018, 09:03 AM

ceroberts75

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2010 A5/B8 2.0L Turbo HVAC/AC issue

Just picked up this car.

very clean so far and working properly, except the HVAC/AC is not blowing cold even after a fresh vacuum and charge.

I found a TSB (Technical Service Bulletin) that says it could be the LIN wire.

I have taken out the AC control from the dash and cleaned the sensor very well, as it was very dirty, thought that it could not be reading the temp correctly in the car.

It will blow harder if you turn the temp to Lo, as if it is trying to get colder, but the air just doesn't cool down to COLD. I should ad that for some reason it does get slightly colder while I am going up or down a hill.

I have checked the vacuum and there is no leak of gas.

this is my car.

these are the codes I am getting still.

-----------------------------------------------------------------------------------------------------
Address 08: Auto HVAC (J255) Labels:. 8Tx-820-043-3Z.clb
Part No SW: 8T1 820 043 AQ HW: 8T1 820 043 AQ
Component: KLIMA 3 ZONEN H08 0180
Revision: C1000000 Serial number: 01030520100005
Coding: 64122000
Shop #: WSC 06325 000 00000
VCID: 000F9F3E93D3684418-80542

Faults Found:
00457 - Control Module for Network (J519)
013 - Check DTC Memory
Freeze Frame:
Fault Status: 01101101
Fault Priority: 6
Fault Frequency: 1
Reset counter: 234
Mileage: 151502 km
Time Indication: 0
Date: 2018.03.07

Time: 16:14:4800256 - A/C Pressure/Temperature Sensor (G395)
008 - Implausible Signal
Freeze Frame:
Fault Status: 01101000
Fault Priority: 7
Fault Frequency: 1
Reset counter: 234
Mileage: 151502 km
Time Indication: 0
Date: 2018.03.07
Time: 16:14:48 Freeze Frame:
Temperature: 27.0°C

-----------------------------------------------------------------

Address 09: Cent. Elect. (J519) Labels:. 8K0-907-063.clb
Part No SW: 8K0 907 063 P HW: 8K0 907 063 P
Component: BCM1 1.0 H29 0380
Revision: 10029001 Serial number: 00000000527279
Coding: 26001091063CAF010000080300003D3D0F1C52880201016100 0000
Shop #: WSC 06325 000 00000
VCID: 3C772BCEBFBBCCA404-8068 Subsystem 1 - Part No SW: 8T1 955 119 D HW: 8J1 955 119 Labels: 1KX-955-119.CLB
Component: WWS 240410 H14 0070
Serial number: SWF10040240082
Coding: 00FD11 Subsystem 2 - Part No SW: 8K0 955 559 HW: 8K0 955 559 Labels: 8K0-955-559.CLB
Component: RLS H04 0003
Serial number: 10894187
Coding: 02532C Subsystem 3 - Part No SW: 8K0 941 531 AN HW: 8K0 941 531 AN
Component: E1 - LDS H08 0090
Serial number: 00000000002004102340 Subsystem 4 - Part No SW: 8K0 907 410 C HW: 8K0 907 410 C
Component: HOMELINK H01 00101

Fault Found:
00256 - A/C Pressure/Temperature Sensor (G395)
004 - No Signal/Communication
Freeze Frame:
Fault Status: 01100100
Fault Priority: 3
Fault Frequency: 1
Reset counter: 234
Mileage: 151502 km
Time Indication: 0
Date: 2018.03.07
Time: 16:14:00

------------------------------------------------------------------

AND THIS IS A PESKY RANGE CONTROL AND SIDE BULB...WHICH I CANNOT FIND, AS THEY ARE ALL LIT

Address 55: Headlight Range Labels: 8K0-907-357.clb
Part No: 8K5 907 357
Component: Dynamische LWR H01 0010
Revision: 00000001 Serial number:
Coding: 0000002
Shop #: WSC 06324 000 00000
VCID: 77FDF4E2061D2FFC29-80222

Faults Found:
01539 -

Headlights"> <span style=

Headlights" /> Headlights">Headlights

Not Adjusted
005 - No or Incorrect Basic Setting / Adaptation - MIL ON
Freeze Frame:
Fault Status: 11100101
Fault Priority: 2
Fault Frequency: 1
Reset counter: 234
Mileage: 151502 km
Time Indication: 0
Date: 2018.03.07

Time: 16:14:4901534 - Control Circuit for Left Headlight Range Adjusting Motor (V48)
010 - Open or Short to Plus - MIL ON
Freeze Frame:
Fault Status: 11101010
Fault Priority: 2
Fault Frequency: 1
Reset counter: 234
Mileage: 151502 km
Time Indication: 0
Date: 2018.03.07
Time: 16:14:49
------------------------------------------------------------------------------

I also have a Headlight Range light on on my dash.
Any help would be appreciated!

Thank you!